CN1757551A - Hydraulic brake system - Google Patents
Hydraulic brake system Download PDFInfo
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- CN1757551A CN1757551A CN 200510105863 CN200510105863A CN1757551A CN 1757551 A CN1757551 A CN 1757551A CN 200510105863 CN200510105863 CN 200510105863 CN 200510105863 A CN200510105863 A CN 200510105863A CN 1757551 A CN1757551 A CN 1757551A
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Abstract
The invention discloses a kind of hydraulic brake system that in vehicle, uses, vehicle has wheel and can manually operated brake service member, this device comprises: the Manual pressure source, comprise (a) hydraulic booster, power-assisted is applied to the operating effort of control member by chaufeur and produces and cooresponding first hydraulic pressure of power-assisted operating effort, (b) master cylinder produces and cooresponding second hydraulic pressure of power-assisted operating effort; The power pressure source, whether the operational brake control member irrespectively utilizes power to produce the 3rd hydraulic pressure with chaufeur; Hydraulic brake relatedly with wheel is provided with and comprises brake cylinder, and each applies hydraulic braking force to corresponding wheel to corresponding brake cylinder sap pressure supply the time; The part that crosses be connected to each brake cylinder, and hydraulic booster, master cylinder and power pressure source is parallel-connected to it; And pressure-source communication control device, allow optionally that at least one is communicated with the part that crosses in hydraulic booster, master cylinder and the power pressure source.
Description
Technical field
The present invention relates to hydraulic brake system, it comprises hydraulic booster, master cylinder, power fluid potential source and a plurality of brake cylinder.
Background technology
Patent documentation 1 (Japanese Patent No.3,396,694), patent documentation 2 (Japanese Patent Application Publication No.2000-177,550), patent documentation 3 (Japanese Patent Application Publication No.10-315,946) and patent documentation 4 (Japanese Patent Application Publication No.11-180,294) each in all discloses a kind of hydraulic brake system, and this device also comprises the main channel that all brake cylinders all are connected to except hydraulic booster, master cylinder, power fluid potential source and a plurality of brake cylinder.
Particularly, patent documentation 1 disclosed hydraulic brake system is configured to the power fluid potential source and is connected to the main channel, but hydraulic booster or master cylinder are free of attachment to the main channel.Patent documentation 2 disclosed hydraulic brake systems are configured to master cylinder and the power fluid potential source is connected to the main channel, but hydraulic booster is connected to the subchannel that links to each other with interface channel, and the power fluid potential source is connected to the main channel via this interface channel.Patent documentation 3 or 4 disclosed hydraulic brake systems are configured to utilize the hydraulic booster of the hydraulic pressure that the power fluid potential source produces to be connected to the main channel, but power fluid potential source or master cylinder are free of attachment to the main channel.
Summary of the invention
So the purpose of this invention is to provide a kind of hydraulic brake system, it optionally allows in hydraulic booster, master cylinder and the power fluid potential source at least one to be communicated with a plurality of brake cylinders, and enjoys improved steerability thus.
Below, with explanation and explain some examples be regarded as can requiring in this application the of the present invention various patterns (following will being called in appropriate place can require protected mode) protected.Can require protected mode to comprise at least and corresponding each pattern of claims, but can comprise wideer or narrower pattern of the present invention in addition, or even not be same as one or more inventions of claimed invention.The all similar claims of in the following pattern (1) to (35) each ground label, and if appropriately depend on other one or more patterns, can require protected mode and indicate and illustrate may making up of its element or technical characterictic to help to understand.But be to be understood that the element of the following pattern that only will illustrate for purposes of illustration below the invention is not restricted to or technical characterictic or its combination.Each that should also be appreciated that following pattern should be analyzed like this; promptly not only consider the explanation directly related with it; and consider detailed description to the preferred embodiment of the present invention; and in other required protected mode, can delete one or more elements or one or more technical characterictic to following any AD HOC increase or from it.
(1) a kind of hydraulic brake system that uses in vehicle, described vehicle have a plurality of wheels and can be by the manual brake service member of operation of the chaufeur of described vehicle, and described device comprises:
The Manual pressure source, comprise (a) hydraulic booster, its corresponding first hydraulic pressure of operating effort after the operating effort that is applied to described brake service member by chaufeur provides power-assisted and generation and described power-assisted, (b) master cylinder, its produce with as corresponding second hydraulic pressure of operating effort after the described power-assisted of the output of described hydraulic booster;
Whether power pressure source, itself and chaufeur operate described brake service member irrespectively by utilizing power to produce the 3rd hydraulic pressure;
A plurality of hydraulic brakes, it is provided with explicitly with described a plurality of wheels respectively and comprises separately brake cylinder, and in described a plurality of hydraulic brake each when a corresponding sap pressure supply in described brake cylinder in described wheel corresponding one apply hydraulic braking force;
The part that crosses, it is connected in the described brake cylinder separately of described hydraulic brake each, and described hydraulic booster, described master cylinder and described power pressure source are connected to the described part that crosses with being connected in parallel to each other; With
Pressure-source communication control device, it optionally allows in described hydraulic booster, described master cylinder and the described power pressure source at least one to be communicated with the described part that crosses.
In the hydraulic brake system according to pattern (1), the part that crosses is connected to a plurality of brake cylinders, and three pressure sources (being described hydraulic booster, described master cylinder and described power pressure source) are connected to the part that crosses in parallel.Because described hydraulic booster, described master cylinder and described power pressure source are connected with being connected in parallel to each other,, and therefore can optionally be communicated with at least one brake cylinder so at least one in three pressure sources can optionally be communicated with the part that crosses.Therefore, in this hydraulic brake system, the part that crosses not only is connected to a plurality of brake cylinders but also is connected to a plurality of pressure sources, and a plurality of pressure source is connected to the part that crosses with being connected in parallel to each other.So this device can be enjoyed simple structure and improved steerability.The power pressure source can be the pressure source that utilizes impersonal force (for example electric energy).
In addition, in this hydraulic brake system, all brake cylinders of vehicle can be connected to the part that crosses.In the case, each brake cylinder can be optionally be communicated with in described hydraulic booster, described master cylinder and the described power pressure source at least one.
In this hydraulic brake system, the power pressure source can produce high pressure, promptly can fluid power operates the hydraulic pressure of a plurality of brake cylinders.
Hydraulic booster can be to provide power-assisted servo-unit by the hydraulic pressure that utilizes power pressure source (being connected in parallel with master cylinder with servo-unit) to produce to the operating effort that is applied to brake service member (for example brake pedal), or by utilizing the hydraulic pressure that produces by other power pressure sources that are different from the power pressure source that is connected to the part that crosses to provide power-assisted servo-unit to this operating effort.
(2) according to the described hydraulic brake system of pattern (1), wherein said pressure-source communication control device comprises the servo-unit and the cylinder connected component of machinery, and it mechanically divides described power pressure source and cuts off and mechanically allow described hydraulic booster and the described master cylinder each to be communicated with the described part that crosses from described intersection.
Pressure-source communication control device can mechanically allow in described hydraulic booster and the described master cylinder each to be communicated with the described part that crosses.In the case, can be to the hydraulic pressure of brake cylinder supply from two pressure sources (being hydraulic booster and master cylinder), so hydraulic brake can be operated.
For example, pressure-source communication control device can comprise that three Electromagnetically-operatings are communicated with control cock, each Electromagnetically-operating is communicated with control cock and is arranged in cross part and described hydraulic booster, described master cylinder and the described power pressure source between corresponding one, and each Electromagnetically-operating is communicated with control cock and is opened and closed by the electric current that control is fed to its coil.In the case, each that is arranged on that the Electromagnetically-operating that crosses between the partial sum hydraulic booster is communicated with control cock (it can be called as " servo-unit connection control cock ") and is arranged on that the Electromagnetically-operating that crosses between the partial sum master cylinder is communicated with in the control cock (it can be called as " cylinder connection control cock ") can be open in usual, and to be communicated with control cock (it can be called as " power pressure-source communication control cock ") can be normally closed and be arranged on the Electromagnetically-operating that crosses between the partial sum power pressure source.When not having electric current to be fed to each coil of three Electromagnetically-operatings connection control cock, these are communicated with control cock and mechanically allow hydraulic booster and master cylinder to be communicated with the part that crosses, and mechanically the power pressure source are divided from intersection and cut off.Simultaneously, power pressure-source communication control cock can be the valve that can be used as the fluid control valve of the hydraulic pressure of controlling generation of power pressure source or output.
In addition, when the ignition lock of (promptly being right after) vehicle thereafter when its OFF state switches to the ON state, pressure-source communication control device can mechanically allow hydraulic booster and master cylinder to be communicated with the part that crosses, and mechanically the power pressure source is divided from intersection and cut off.Under this state, can carry out the initial inspection operation.In initial inspection operating period, can check at least one among the following three: as the electric system of this hydraulic brake system of single-piece, the power pressure source that divide to cut off from intersection { for example, pump motor, can be automatically controlled as the fluid control valve device [this fluid control valve device is arranged on and crosses between the partial sum power pressure source, and can be regarded as Linear Control valve device 230 (being that pressure increases linear control valve 232 and pressure reduces linear control valve 234) of explanation in " specific embodiment " of the present invention] of the hydraulic pressure of power pressure source output, perhaps detect the kinetic pressure force gauge of the hydraulic pressure that produces by the power pressure source }, with output command to control the computing machine of each hydraulic pressure in a plurality of brake cylinders.
(3) according to pattern (1) or the described hydraulic brake system of pattern (2), wherein said pressure-source communication control device comprises servo-unit and/or cylinder connected component, when described hydraulic brake system during et out of order, described servo-unit and/or cylinder connected component divide to the described power pressure source of major general from described intersection and cut off and allow described hydraulic booster and the described master cylinder at least one to be communicated with the described part that crosses.
When this hydraulic brake system during et out of order (no matter which kind of fault takes place or when detecting the predetermined kind fault), in described hydraulic booster and the described master cylinder at least one is communicated with the described part that crosses, and at least one in described thus hydraulic booster and the described master cylinder can be operated hydraulic brake.The power pressure source can divide cut-out from intersection, and described hydraulic booster and described master cylinder are communicated with the described part that crosses simultaneously; Power pressure source and master cylinder can divide cut-out from intersection, and described hydraulic booster is communicated with the described part that crosses simultaneously; Perhaps power pressure source and hydraulic booster can divide cut-out from intersection, and master cylinder is communicated with the described part that crosses simultaneously.
Pressure-source communication control device can comprise the power pressure source connected component relevant with normal condition, when this hydraulic brake system was in normal condition, this connected component divided described hydraulic booster and described master cylinder cut-out and allows the power pressure source to be communicated with the part that crosses from intersection.When this hydraulic brake system just often, preferably the hydraulic pressure that is produced by the power pressure source is used to control brake cylinder hydraulic pressure to producing and the corresponding value that requires hydraulic braking force of vehicle the present situation.
Because at least one in described hydraulic booster and the described master cylinder is communicated with the described part that crosses, thus the amount of the required energy of operation hydraulic brake can be reduced, and can improve the reliability of this hydraulic brake system.
(4) according to each described hydraulic brake system in the pattern (1) to (3), wherein said pressure-source communication control device comprises servo-unit relevant with fault and/or cylinder connected component, when the hydraulic pressure at least one in the described brake cylinder can not be automatically controlled, described servo-unit relevant with fault and/or cylinder connected component divided to the described power pressure source of major general from described intersection and cut off and allow described hydraulic booster and the described master cylinder at least one to be communicated with the described part that crosses.
For example, the power pressure source comprise can be automatically controlled as the delivery pressure control convenience of the hydraulic pressure of power pressure source output, make controlled hydraulic pressure be supplied under the situation of brake cylinder, can think that each hydraulic pressure in the brake cylinder is by automatically controlled.Simultaneously, (for example be arranged between power pressure source and the brake cylinder at one or more independently hydraulic-pressure control apparatus, a plurality of indivedual hydraulic-pressure control apparatus are set, each can control the hydraulic pressure at least one brake cylinder) situation under, hydraulic-pressure control apparatus comes each hydraulic pressure in the control brake cylinder by the hydraulic pressure that utilizes the power pressure source to produce.In the case, can think that also each hydraulic pressure in the brake cylinder is by automatically controlled.
In each of above-mentioned situation, when delivery pressure control convenience or hydraulic-pressure control apparatus (this equipment can be called as " control system ") under the situation of et out of order, in hydraulic booster and the master cylinder at least one is communicated with the part that crosses, and therefore the hydraulic pressure corresponding to brake operation force (promptly being applied to the operating effort of brake service member) can be supplied to brake cylinder.
As described below, fail to export high pressure when (this fault can be called as " fault of power system ") when the power pressure source, at least one in hydraulic booster and the master cylinder is communicated with the part that crosses.
(5) according to each described hydraulic brake system in the pattern (1) to (4), wherein said pressure-source communication control device comprises servo-unit and/or the cylinder connected component that non-control is relevant, when each hydraulic pressure in the described brake cylinder not when automatically controlled, servo-unit that described non-control is relevant and/or cylinder connected component divide to the described power pressure source of major general from described intersection and cut off and allow described hydraulic booster and the described master cylinder at least one to be communicated with the described part that crosses.
(6) according to each described hydraulic brake system in the pattern (1) to (5), wherein said pressure-source communication control device comprises servo-unit relevant with dead ship condition and/or cylinder connected component, when described vehicle was in dead ship condition, described servo-unit relevant with dead ship condition and/or cylinder connected component divided to the described power pressure source of major general from described intersection and cut off and allow described hydraulic booster and the described master cylinder at least one to be communicated with the described part that crosses.
When each hydraulic pressure in the brake cylinder not when automatically controlled, promptly when the hydraulic pressure that is produced by the Manual pressure source directly was fed to brake cylinder, at least one in described hydraulic booster and the described master cylinder was communicated with the described part that crosses.
When vehicle is in dead ship condition, not necessarily require to come accurate or each hydraulic pressure in the control brake cylinder subtly by the hydraulic pressure that utilizes the power pressure source to produce.In addition, consider reducing of expenditure of energy, preferably the hydraulic pressure of not working power pressure source.Therefore, when vehicle is in dead ship condition, do not come control brake cylinder hydraulic pressure, but brake cylinder is communicated with in hydraulic booster and the master cylinder at least one by the hydraulic pressure that utilizes the power pressure source to produce.
(7) according to each described hydraulic brake system in the pattern (1) to (6), wherein said pressure-source communication control device comprises the cylinder connected component relevant with fault, when described power pressure source failed to produce described the 3rd hydraulic pressure, the described cylinder connected component relevant with fault divided described hydraulic booster and described power pressure source and cuts off and allow described master cylinder to be communicated with the described part that crosses from described intersection.
The power pressure source can be to comprise that the equipment that can produce high hydraulic pressure (is Hydraulic producing device, pumping unit for example) pressure source, or not only comprise Hydraulic producing device (for example pumping unit) but also comprise the equipment that can under the pressurized state of hydraulic oil, accumulate and store hydraulic oil or the pressure source of part (for example hydraulic accumulator).These equipment can be called as " power system ".When power system during et out of order, the power pressure source can not produce high hydraulic pressure.
Provide under the power-assisted situation to brake operation force by the hydraulic pressure that utilizes the generation of power pressure source at hydraulic booster, if the power pressure source can not produce high hydraulic pressure, then hydraulic booster can not provide power-assisted to brake operation force.In the case, preferably hydraulic booster divides cut-out and master cylinder to be communicated with the part that crosses from intersection.
But even pumping unit possibility et out of order, as long as leave certain hydraulic oil in reservoir, hydraulic booster also can continue to provide power-assisted to brake operation force.In the case, it is favourable allowing hydraulic booster to be communicated with the part that crosses.
Under the master cylinder and the partially communicating state that crosses, if driver's operation brake service member, then master cylinder produces and the corresponding hydraulic pressure of brake operation force, and therefore the hydraulic pressure that produces is supplied to brake cylinder.Therefore, vehicle can stop with the reliability that improves.
In addition, for example when ground-surface coefficientoffriction that vehicle travelled or moved very low, and one or more wheels of vehicle are when entering locking (locked) state, certain braking force can be applied to remaining one or more wheel.For example, when the non-driving front-wheel of rear-guard vehicle enters the locking state,, then can overcome the torque brake activation power of creeping that is applied to the vehicle rear drive sprocket if trailing wheel is not in the locking state.Therefore, can reduce the amount of movement of vehicle.
(8) according to each described hydraulic brake system in the pattern (1) to (7), described pressure-source communication control device comprises cylinder and/or power pressure source connected component, when described hydraulic booster mechanical breakdown had taken place, described cylinder and/or power pressure source connected component divided to the described hydraulic booster of major general from described intersection and cut off and allow described master cylinder and the described power pressure source at least one to be communicated with the described part that crosses.
When described hydraulic booster mechanical breakdown had taken place, described hydraulic booster and master cylinder can divide cut-out from described intersection, and the power pressure source is communicated with the part that crosses simultaneously; Hydraulic booster and power pressure source can divide cut-out from described intersection, and master cylinder is communicated with the part that crosses simultaneously; Perhaps hydraulic booster can divide cut-out from described intersection, and master cylinder and power pressure source are communicated with the part that crosses simultaneously.
(9) according to each described hydraulic brake system in the pattern (1) to (8), also comprise:
Communication facilities, it receives the information of sending from external device; With
Depend on the hydraulic-pressure control apparatus of information, described the 3rd hydraulic pressure that its described information that receives based on described communication facilities is produced by described power pressure source by utilization is controlled the hydraulic pressure in each described brake cylinder,
Wherein said pressure-source communication control device comprises servo-unit and/or power pressure source connected component, when described communication facilities failed normally to receive described information, described servo-unit and/or power pressure source connected component divided to the described master cylinder of major general from described intersection and cut off and allow described hydraulic booster and the described power pressure source at least one to be communicated with the described part that crosses.
When described communication facilities failed normally to receive described information, hydraulic booster and master cylinder can divide cut-out from described intersection, and the power pressure source is communicated with the part that crosses; Perhaps master cylinder and power pressure source can divide cut-out from described intersection, and hydraulic booster is communicated with the part that crosses.
When described communication facilities can normally receive described information, the hydraulic pressure that can be produced by described power pressure source by utilization based on the described information that described communication facilities receives came each hydraulic pressure in the control brake cylinder.On the contrary, for example excessive or when not receiving the information that will receive when communication facilities during et out of order when the quantity of information that receives, can not come suitably control brake cylinder hydraulic pressure based on described information.
In the case, suitable is that the power pressure source is divided cut-out and allows hydraulic booster to be communicated with the part that crosses from intersection, because brake cylinder hydraulic pressure can be controlled as and the corresponding value of brake operation force.In addition, compare with the partially communicating situation that crosses, can reduce the increase of the operational stroke of brake service member with master cylinder.
Perhaps, can come control brake cylinder hydraulic pressure by the hydraulic pressure that utilizes the power pressure source, and not use the information that receives by communication facilities.For example, brake cylinder hydraulic pressure can be controlled as and a corresponding value of the hydraulic pressure that requires.
(10) according to each described hydraulic brake system in the pattern (1) to (9), wherein said vehicle has energy recovery brake equipment and energy recovery braking force control apparatus, described energy recovery brake equipment applies the energy recovery braking force owing to be connected to the energy recovery braking of the electrical motor of at least one drive wheel in the described wheel to described at least one drive wheel, described energy recovery braking force control apparatus control is applied to the energy recovery braking force of described at least one drive wheel
Wherein said hydraulic brake system also comprises:
Communication facilities, it receives the information that expression is applied to the actual energy recovery braking force of described at least one drive wheel from described energy recovery braking force control apparatus; With
Energy recovery cooperation control convenience, it reclaims braking force based on the represented described actual energy of the described information that is received by described communication facilities and controls corresponding to the hydraulic pressure at least one described brake cylinder of described at least one drive wheel, make to comprise that the described energy recovery braking force that is applied to described at least one drive wheel and the total braking force of described hydraulic braking force can equal and the corresponding braking force that requires of the current operation status of described brake service member, and
Wherein said pressure-source communication control device comprises servo-unit relevant with fault and/or power pressure source connected component, when described energy recovery braking force control apparatus during et out of order, described servo-unit relevant with fault and/or power pressure source connected component divide to the described master cylinder of major general from described intersection and cut off and allow described hydraulic booster and the described power pressure source at least one to be communicated with the described part that crosses.
When energy recovery braking force control apparatus during et out of order, perhaps when above-mentioned communication facilities during et out of order, usually finish energy recovery cooperation control, make the energy recovery braking force can by vanishing and only hydraulic braking force just can satisfy the braking force that requires.In the case, can carry out transition and control the unexpected variation that limits the value of the value of braking force from energy recovery cooperation control in the fluid control.According to transition control, the energy recovery braking force can reduce continuously or by level ground, and hydraulic braking force increases continuously or by level ground simultaneously.In the case, preferably come control brake cylinder hydraulic pressure by the hydraulic pressure that utilizes the power pressure source.
(11) according to each described hydraulic brake system in the pattern (1) to (10), wherein said pressure-source communication control device comprises servo-unit and power pressure source connected component, when just requiring the quick response of described hydraulic brake, described servo-unit and power pressure source connected component divide described master cylinder and cut off and allow described hydraulic booster and the described power pressure source each to be communicated with the described part that crosses from described intersection.
When the quick response of this hydraulic brake system of needs, described hydraulic booster and described power pressure source are communicated with the part that crosses, and therefore more substantial hydraulic oil can flow in the brake cylinder.Therefore, brake cylinder hydraulic pressure can be increased fast.In addition, because two pressure sources are communicated with the part that crosses, so pressure increases slope and can be increased in the brake cylinder, and regardless of the structure restriction of this hydraulic brake system (for example can control the outlet port diameter of fluid control valve of the output hydraulic pressure of power pressure source) or for the restriction of the speed of response of the above-mentioned control system of this device.
For example, when with chaufeur when the corresponding increase slope that requires braking force of the serviceability of brake service member of operation is quite high, when being not less than reference value by departing from of deducting from the requirement braking force that actual braking force obtains, perhaps when judging that based on the motoring condition of vehicle braking force need be increased fast (for example, spacing between Ben Che and another vehicle of travelling before this car very hour, perhaps when the close velocity of this car is quite high), can judge needs response fast.
When needs responded fast, hydraulic booster can divide cut-out from intersection, and master cylinder and power pressure source are communicated with the part that crosses simultaneously.For example, be communicated with master cylinder and under the situation of all the other brake cylinders and power pressure-source communication, can reduce quantity with the brake cylinder of master cylinder or power pressure-source communication at one or more brake cylinders.Therefore, compare with the situation of master cylinder or power pressure-source communication with all brake cylinders, more substantial hydraulic oil can be supplied in each brake cylinder.
(12) according to each described hydraulic brake system in the pattern (1) to (11), wherein said pressure-source communication control device comprises and the relevant servo-unit connected component of anti-lock control, when carrying out anti-lock control, the described servo-unit connected component relevant with anti-lock control divides described master cylinder and described power pressure source cut-out and allows described hydraulic booster to be communicated with the described part that crosses from described intersection.
When carrying out anti-lock (anti-locking) control, come control brake cylinder hydraulic pressure by the hydraulic pressure that utilizes hydraulic booster to produce.
When carrying out anti-lock control, can come control brake cylinder hydraulic pressure by the hydraulic pressure that utilizes the power pressure source to produce.But when carrying out anti-lock control, the brake service member is just by driver's operation, and expectation utilizes and the corresponding hydraulic pressure of current operation status of brake service member.If utilize the hydraulic pressure of hydraulic booster, then can reduce expenditure of energy like this, utilized simultaneously and the corresponding hydraulic pressure of the serviceability of brake service member.Simultaneously, when carrying out anti-lock control, do not need than the higher hydraulic pressure of pressure corresponding to the serviceability of brake service member.From all these reasons, suitable is to utilize the hydraulic pressure that is produced by hydraulic booster.
(13) according to each described hydraulic brake system in the pattern (1) to (12), wherein said pressure-source communication control device comprises the servo-unit connected component relevant with air detection, when detecting air, the described servo-unit connected component relevant with air detection divides described master cylinder and described power pressure source cut-out and allows described hydraulic booster to be communicated with the described part that crosses from described intersection.
When detecting air, perhaps when the consumption general who estimates hydraulic oil was very big, hydraulic booster was communicated with the part that crosses.In the case, compare with the partially communicating situation that crosses, can reduce energy consumption, and the hydraulic oil of increase can be supplied to brake cylinder with the power pressure source.In addition, compare with the partially communicating situation that crosses, can reduce the increase of the operational stroke of brake service member with master cylinder.
(14) according to each described hydraulic brake system in the pattern (1) to (13), wherein said pressure-source communication control device comprises and the relevant power pressure source connected component of tractive force control, when carrying out tractive force control, the power pressure source connected component permission following (a) that the control of described and tractive force is relevant and (b) in each be communicated with the described part that crosses: (a) at least one in described hydraulic booster and the described master cylinder, and (b) described power pressure source.
Tractive force control is used for the drive wheel of control vehicle.So therefore,, control each hydraulic pressure in these brake cylinders by the hydraulic pressure that utilizes the power pressure source corresponding to the brake cylinder and the power pressure-source communication of drive wheel.On the other hand, cut off from brake cylinder corresponding to drive wheel corresponding to the brake cylinder of the non-driving wheel of vehicle, and with hydraulic booster and master cylinder at least one is communicated with.Therefore, if at tractive force control period operational brake control member, then hydraulic pressure can be fed to the brake cylinder corresponding to non-driving wheel apace, makes hydraulic braking force can be applied to non-driving wheel.
(15) according to each described hydraulic brake system in the pattern (1) to (14), also comprise following (a), (b) at least one and (c): (a) detect the serviceability check implement of value of the serviceability of the described brake service member of expression, (b) cylinder pressure transducer of the value of described second hydraulic pressure of the described master cylinder generation of detection expression, (c) the kinetic pressure force gauge of the value of described the 3rd hydraulic pressure of the described power pressure source generation of detection expression, and wherein said pressure-source communication control device comprises fault detection part, and described fault detection part is based on by (a) described serviceability check implement, (b) described cylinder pressure transducer and (c) at least one the detected described value in the described kinetic pressure force gauge detect the fault of described hydraulic brake system.
For example, when power pressure is not higher than reference value, can judge power pressure source et out of order, for example power system et out of order.
In addition, when power pressure is higher than reference value, but the hydraulic pressure that is produced by master cylinder when the brake service member is taked particular operational state can judge that mechanical breakdown has taken place hydraulic booster less than with the corresponding reference value of this particular operational state the time.
In addition, under adopting the situation that detects a plurality of brake-cylinder pressure sensors of each hydraulic pressure in the brake cylinder, can detect the fault of control system.For example, when power system normal, but by these sensor to one or more brake cylinder hydraulic pressure depart from objectives pressure when surpassing reference value, can judge control system et out of order.By each sensor to brake cylinder hydraulic pressure can be used to judge in the hydraulic efficiency pressure system that is connected to corresponding to the brake cylinder of each sensor whether have air.
(16) according to each described hydraulic brake system in the pattern (1) to (15), also comprise:
A plurality of indivedual pressure control valve devices, each control in described a plurality of indivedual pressure control valve devices and the hydraulic pressure in corresponding at least one the described brake cylinder of described each indivedual pressure control valve device; With
Brake cylinder is communicated with control convenience, and it optionally controls in described indivedual pressure control valve device at least one, is communicated with the described part that crosses with permission at least one described brake cylinder corresponding to described at least one indivedual pressure control valve device.
By controlling one or more indivedual pressure control valve devices, one or more brake cylinders optionally are communicated with the part that crosses.That is to say that one or more brake cylinders optionally are communicated with in hydraulic booster, master cylinder and the power pressure source at least one.Therefore, can select the particular combinations of at least one brake cylinder of communicating with each other and at least one pressure source.Other one by one pressure control valve device can be associated with a brake cylinder or two brake cylinders.Under one situation of back, other one by one pressure control valve device can be controlled corresponding to each hydraulic pressure in two brake cylinders of for example left and right vehicle wheel trailing wheel.
(17) according to each described hydraulic brake system in the pattern (1) to (16), wherein said intersection branch comprise first cross partial sum second cross the part and separation device, described separation device is arranged on described first and crosses between described second intersection of partial sum divides, and described separation device optionally switches to wherein said separation device and allows described first partial sum described second first serviceability that part communicates with each other that crosses that crosses, and wherein said separation device is with described first partial sum described second second serviceability that part cuts off each other that crosses that crosses.
(18) according to the described hydraulic brake system of pattern (17), wherein said brake cylinder comprises the first cylinder group and the second cylinder group, the described first cylinder group comprise be connected to described first cross the part at least one first group of brake cylinder, the described second cylinder group comprise be connected to described second cross the part at least one second group of brake cylinder.
(19) according to pattern (17) or the described hydraulic brake system of pattern (18), wherein two pressure sources in three pressure sources being made up of described hydraulic booster, described master cylinder and described power pressure source are connected to described first part that crosses, and another pressure source in described three pressure sources is connected to described second part that crosses.
Three pressure sources are connected to the part that crosses in parallel.But, be divided under the situation of two parts (promptly first and second cross part) in the part that crosses, be not that all three pressure sources all are connected on of two parts that cross, be connected to second part that crosses but two pressure sources are connected to first cross part and another pressure source.
Similarly, be not that all brake cylinders all are connected in two parts that cross one, but first group of brake cylinder be connected to first cross part simultaneously second group of brake cylinder be connected to second part that crosses.Therefore, cross under the state that cut off each other by separation device of part first and second, this hydraulic brake system or loop define two hydraulic efficiency pressure systems, promptly constitute the biliquid pressing system.
The first and second cylinder groups can comprise two pairs of diagonal angle wheels respectively, perhaps comprise a pair of front-wheel and pair of rear wheels respectively.
Separation device can be to comprise the equipment that is fed to the Electromagnetically-operating close/open valve that the electric current of its coil is opened and closed by control.In the case, preferably the Electromagnetically-operating close/open valve is the normally closed that this valve maintenance is closed when not having electric current to be fed to coil.Therefore therefore, when not having electric current to be fed to the fault of valve, first and second parts that cross are cut off each other by separation device, and first and second parts that cross are independently of one another and constitute the biliquid pressing system.
(20) according to each described hydraulic brake system in the pattern (17) to (19), also comprise:
A plurality of indivedual pressure control valve devices, each control in described a plurality of indivedual pressure control valve devices and the hydraulic pressure in corresponding at least one the described brake cylinder of described each indivedual pressure control valve device; With
Brake cylinder is communicated with control convenience, it is controlled described separation device and controls in described indivedual pressure control valve device at least one, with optionally allow corresponding at least one described brake cylinders of described at least one indivedual pressure control valve device and described hydraulic booster, described master cylinder and the described power pressure source described at least one be communicated with.
By controlling one or more indivedual pressure control valve devices, one or more brake cylinders can optionally be communicated with the part that crosses; And by the control separation device, first group of brake cylinder can be communicated with second part that crosses, and perhaps second group of brake cylinder can be communicated with first part that crosses.So at least one is connected under the state of the part that crosses in three pressure sources, by controlling corresponding indivedual pressure control valve device and separation device, at least one brake cylinder can be optionally and at least one pressure-source communication.
(21) according to the described hydraulic brake system of pattern (20), wherein said pressure-source communication control device comprises single pressure-source communication part, and it divides described two pressure sources and cuts off and allow described another pressure source and described second part that crosses to be communicated with from described first intersection; And wherein said brake cylinder is communicated with control convenience and comprises the intersection connected component, its with described separation device switch to its described first serviceability with allow described first cross partial sum described second cross the part communicate with each other, and control is corresponding at least one indivedual pressure control valve device of described at least one first group of brake cylinder, allowing described at least one first group of brake cylinder and described first part that crosses to be communicated with, and allow described at least one first group of brake cylinder thus and be connected to described second described another pressure-source communication that crosses part.
When separation device is in its second serviceability, be about to first and second and cross part when cutting off each other, first group of brake cylinder can be connected to first at least one that crosses in two pressure sources of part and be communicated with; And second group of brake cylinder can be connected to second pressure-source communication that crosses part.Therefore, the automatically definite one or more pressure sources that can communicate with each other and the combination of one or more brake cylinders.
On the other hand, when separation device is in its first serviceability, promptly allow first and second to cross part when communicating with each other, by controlling corresponding indivedual pressure control valve devices, first group of brake cylinder can be connected to second a described pressure-source communication that crosses part.
Otherwise a described pressure source can divide cut off from second intersection, and in described two pressure sources at least one is communicated with first part that crosses.In the case, when separation device allows first and second to cross part when communicating with each other, second group of brake cylinder can be connected to first at least one pressure-source communication that crosses part.
Therefore, the control of separation device and indivedual pressure control valve devices has been caused increasing the degree of freedom of the combination of (a plurality of) pressure source of communicating with each other and (a plurality of) drg.
(22) according to pattern (20) or the described hydraulic brake system of pattern (21), wherein said brake cylinder comprises first brake cylinder, second brake cylinder, the 3rd brake cylinder and the 4th brake cylinder of the near front wheel, off front wheel, left rear wheel and the off hind wheel that correspond respectively to described vehicle; Wherein said first brake cylinder and the 4th brake cylinder are connected to described first part that crosses, and described second brake cylinder and the 3rd brake cylinder are connected to described second part that crosses; Wherein said pressure-source communication control device comprises the cylinder connected component, and described cylinder connected component divides described hydraulic booster and described power pressure source cut-out and allows described master cylinder to be communicated with the described part that crosses from described intersection; And wherein said brake cylinder is communicated with control convenience and comprises left and right sides front wheel brake cylinder connected component, described left and right sides front wheel brake cylinder connected component with described separation device switch to its described first serviceability with allow described first cross partial sum second cross the part communicate with each other, and control described indivedual pressure control valve device so that described the 3rd brake cylinder and the 4th brake cylinder are divided and cut off from described second partial sum first intersection that crosses respectively, and allow described first brake cylinder and second brake cylinder to be communicated with described first partial sum second part that crosses that crosses respectively, thus described the 3rd brake cylinder and the 4th brake cylinder are cut off and allow described first brake cylinder and second brake cylinder to be communicated with described master cylinder from described master cylinder.
In hydraulic brake system, be communicated with master cylinder corresponding to two brake cylinders of left and right sides front-wheel according to pattern (22).Therefore, compare with the situation that master cylinder is communicated with, can obtain bigger braking force with two brake cylinders corresponding to left and right sides trailing wheel.In addition, compare, can reduce poor between right side braking force and the left side braking force with situation about being communicated with corresponding to two diagonal angle wheels (for example, the near front wheel and off hind wheel, perhaps off front wheel and left rear wheel) and master cylinder.
(23) according to each described hydraulic brake system in the pattern (17) to (22), wherein said master cylinder be connected to described first cross partial sum second cross the part in one, and described hydraulic booster be connected to described first cross partial sum second cross the part in another.
In the hydraulic brake system according to pattern (23), for example when control system during et out of order, two hydraulic efficiency pressure systems can be used to supply and be applied to the corresponding hydraulic pressure of operating effort of brake service member.
(24) according to each described hydraulic brake system in the pattern (17) to (23), wherein said hydraulic booster and described power pressure source are connected to described first part that crosses, and described master cylinder is connected to described second part that crosses.
In the hydraulic brake system according to pattern (24), at least one in hydraulic booster and the power pressure source can be communicated with first part that crosses.
(25) according to each described hydraulic brake system in pattern (17) to (21), (23) and (24), wherein said brake cylinder comprises four brake cylinders being made up of first brake cylinder of the near front wheel that corresponds respectively to described vehicle, off front wheel, left rear wheel and off hind wheel, second brake cylinder, the 3rd brake cylinder and the 4th brake cylinder; Wherein said first brake cylinder and second brake cylinder are connected to described first cross in the part one of partial sum second that crosses, and described the 3rd brake cylinder and the 4th brake cylinder are connected to described first cross in the part another of partial sum second that cross; Wherein said pressure-source communication control device comprises cylinder and power pressure source connected component, described cylinder and power pressure source connected component allow described master cylinder and described power pressure source to cross with described first partial sum second that crosses that a different part is communicated with in the part respectively, and wherein said hydraulic brake system also comprises:
Cut-out equipment, it controls to its described second serviceability so that described first partial sum second part that crosses that crosses is cut off each other with described separation device;
The kinetic pressure force gauge, it detects the value of expression by described the 3rd hydraulic pressure of described power pressure source generation; With
The oil liquid leakage test section, it detects hydraulic oil whether from being connected at least one hydraulic system leakage with described two brake cylinders of described power pressure source bonded assembly based on the detected described value of described kinetic pressure force gauge.
For example, when having reduced by the detected hydraulic pressure of kinetic pressure force gauge, can judge certain hydraulic oil hydraulic system leakage from being associated with wheel (itself and power pressure-source communication) before or after two above reference quantity.
Comprise at the power pressure source under the situation of hydraulic oil pump that the hydraulic pressure that causes than the leakage that can detect more accurately by fluid descends in its serviceability in the non-operating state of pump.But, even pump may be in its serviceability, if reduced above reference quantity than standard power pressure (it is to estimate from the fluid amount with the corresponding pump output of the serviceability of pump) by the detected actual hydraulic pressure of kinetic pressure force gauge, then also can detect the leakage of hydraulic oil.
Corresponding to not before or after two of power pressure-source communication the brake cylinder of wheel be communicated with master cylinder.Therefore, can be to the serviceability corresponding hydraulic pressure of these brake cylinder supplies with the brake service member.
Can at the corresponding hydraulic efficiency pressure system of front-wheel or with the corresponding hydraulic efficiency pressure system of trailing wheel in any detect the leakage of hydraulic oil.
(26) according to each described hydraulic brake system in pattern (17) to (21) and (23) to (25), wherein said brake cylinder comprises two drive wheel brake cylinders of two drive wheels that correspond respectively to described vehicle and two non-driving wheel brake cylinders that correspond respectively to two non-driving wheels of described vehicle, wherein said drive wheel brake cylinder is connected to described first and crosses part and described non-driving wheel brake cylinder is connected to described second part that crosses, wherein said pressure-source communication control device comprises cylinder and the power pressure source connected component relevant with tractive force control, and described and tractive force are controlled relevant cylinder and power pressure source connected component and allowed described power pressure source and described first part that crosses to be communicated with and to allow described master cylinder and described second part that crosses to be communicated with when carrying out tractive force control.
When carrying out tractive force control, control corresponding to each hydraulic pressure in the brake cylinder of drive wheel by utilizing the hydraulic pressure that produces by the power pressure source, the brake cylinder corresponding to non-driving wheel is communicated with master cylinder simultaneously.Will be by separation device corresponding to the brake cylinder of drive wheel with corresponding to the brake cylinder of non-driving wheel, be about to first and second parts that cross and cut off each other.So, if at tractive force control period operational brake control member, then to supply the hydraulic pressure that produces by master cylinder apace corresponding to the brake cylinder of non-driving wheel.
But the structure of this hydraulic brake system may be modified as, be communicated with hydraulic booster corresponding to the brake cylinder of non-driving wheel, and corresponding to the brake cylinder and the power pressure-source communication of drive wheel.In the case, the hydraulic pressure that produces by hydraulic booster to brake cylinder supply corresponding to non-driving wheel.
If be communicated with first part that crosses that is connected to as corresponding brake cylinder of the wheel of vehicle stability controlled target and power pressure source, and be communicated with second part that crosses that corresponding brake cylinder of the wheel that is not the vehicle stability controlled target and master cylinder are connected to, then this pattern (26) may be used on vehicle stability control.Therefore, if at vehicle stability control period operational brake control member, then to supply the hydraulic pressure that produces by master cylinder apace corresponding to the brake cylinder of non-target wheel.
(27) according to each described hydraulic brake system in the pattern (17) to (26), wherein said intersection subpackage oil scraper liquid passage, described hydraulic booster, described master cylinder and described power pressure source are connected to described fluid passage, and described fluid passage is connected to described brake cylinder, and wherein said separation device is arranged in the described fluid passage and described fluid passage is separated into two parts as described first partial sum second part that crosses that crosses.
In hydraulic brake system according to pattern (27), intersection subpackage oil scraper liquid passage, it is connected to brake cylinder and three pressure sources are connected to this fluid passage.
(28) according to each described hydraulic brake system in pattern (18) to (21), (23), (24) and (27), wherein said brake cylinder comprises first brake cylinder, second brake cylinder, the 3rd brake cylinder and the 4th brake cylinder of the near front wheel, off front wheel, left rear wheel and the off hind wheel that correspond respectively to described vehicle, one in the wherein said first cylinder group and the second cylinder group comprises described first brake cylinder and the 4th brake cylinder, and in the described first cylinder group and the second cylinder group another comprises described second brake cylinder and the 3rd brake cylinder.
(29) according to each described hydraulic brake system in pattern (18) to (21), (23), (24), (26) and (27), wherein said brake cylinder comprises first brake cylinder, second brake cylinder, the 3rd brake cylinder and the 4th brake cylinder of the near front wheel, off front wheel, left rear wheel and the off hind wheel that correspond respectively to described vehicle, one in the wherein said first cylinder group and the second cylinder group comprises described first brake cylinder and second brake cylinder, and in the described first cylinder group and the second cylinder group another comprises described the 3rd brake cylinder and the 4th brake cylinder.
(30) according to each described hydraulic brake system in the pattern (1) to (29), also comprise:
A plurality of indivedual pressure control valve devices, in described a plurality of indivedual pressure control valve devices each comprises that being arranged on the described partial sum that crosses increases control cock corresponding to the pressure between at least one described brake cylinder of described each indivedual pressure control valve device, and comprise that the pressure between the liquid storage tank that is arranged on described at least one brake cylinder and savings hydraulic oil reduces control cock, and the hydraulic pressure of each control in described at least one brake cylinder in described a plurality of indivedual pressure control valve devices, and each pressure of wherein said indivedual pressure control valve devices increase in valve each comprise Electromagnetically-operating control cock open in usual.
A pressure increase control cock and a pressure reduce control cock and can be associated with a brake cylinder or two brake cylinders.In the former case, each hydraulic pressure in the brake cylinder is controlled independently of one another; And under one situation of back, each hydraulic pressure in two brake cylinders is jointly controlled.Liquid storage tank can be a liquid storage tank of under atmospheric pressure saving hydraulic oil.
Pressure increase that control cock and pressure reduces in the control cock each can constitute by the Electromagnetically-operating close/open valve, it can be by opening and closing to coil supply (ON) electric current of valve or cut-out (OFF) electric current to coil; Perhaps can constitute, can control the difference of pressure on this valve continuously by controlling the electric current of the coil that is fed to this valve continuously by linear control valve.
Indivedual pressure control valve devices are arranged on and cross between the partial sum brake cylinder.Because it is open in usual that pressure increases control cock, even so there be not electric current to be fed under the situation of each coil of control cock, be connected to one or more pressure sources of the part that crosses also can sap pressure supply to brake cylinder, so this hydraulic brake system can be operated.
To the control of other pressure control valve device one by one cause controlling with corresponding at least one brake cylinder of at least one indivedual pressure control valve device in hydraulic pressure.Therefore, in each of anti-lock control, tractive force control and vehicle stability control (sliding mode of each wheel is controlled as the state of the coefficientoffriction that is suitable for vehicle institute track in each of these controls), can utilize one or more indivedual pressure control valve devices.In addition, when each hydraulic pressure in the brake cylinder is jointly controlled (for example, when these hydraulic pressure are controlled as with the corresponding value of the desired braking force of chaufeur, this braking force is determined based on the serviceability of brake service member), can utilize one or more indivedual pressure control valve devices.
(31) according to each described hydraulic brake system in the pattern (1) to (30), also comprise:
A plurality of indivedual pressure control valve devices, each control in described a plurality of indivedual pressure control valve devices is corresponding to the hydraulic pressure at least one described brake cylinder of described each indivedual pressure control valve device; With
Control the hydraulic-pressure control apparatus of indivedual pressure control valve devices, described each the indivedual pressure control valve device of its control make the hydraulic pressure in described at least one brake cylinder can take the value corresponding to the present situation of described vehicle.
Because control to indivedual pressure control valve devices, by utilizing the hydraulic pressure that produces by the power pressure source, can be with the fluid control in each brake cylinder with the corresponding value of vehicle condition (this value can corresponding to based on the serviceability of brake service member and definite desired braking force of chaufeur).
(32) according to each described hydraulic brake system in the pattern (1) to (31), wherein said power pressure source comprises the delivery pressure control convenience, described delivery pressure control convenience control is as described the 3rd hydraulic pressure of the output hydraulic pressure of described power pressure source, and wherein said hydraulic brake system also comprises delivery pressure control convenience control part, and described delivery pressure control convenience control part is controlled described delivery pressure control convenience makes hydraulic pressure at least one described brake cylinder can take the value corresponding to the present situation of described vehicle.
Under the power pressure source comprises situation with the pump motor of the pump of hydraulic oil pressurization and driving pump, the delivery pressure control convenience can be the equipment that comprises the driving circuit of driving pump electrical motor, or comprises the fluid control valve device equipment of (it comprises one or more fluid control valves).When the output hydraulic pressure Be Controlled of power pressure source, each hydraulic pressure in the brake cylinder can be controlled jointly.
(33) according to pattern, (1) extremely, (32) each described hydraulic brake system in, wherein said vehicle has energy recovery brake equipment and energy recovery braking force control apparatus, described energy recovery brake equipment applies the energy recovery braking force owing to be connected to the energy recovery braking of the electrical motor of at least one drive wheel in the described wheel to described at least one drive wheel, described energy recovery braking force control apparatus control is applied to the described energy recovery braking force of described at least one drive wheel
Wherein said hydraulic brake system also comprises:
Communication facilities, it receives the information that expression is applied to the actual energy recovery braking force of described at least one drive wheel from described energy recovery braking force control apparatus; With
Energy recovery cooperation control convenience, it reclaims braking force based on the represented described actual energy of the described information that is received by described communication facilities and controls corresponding to the hydraulic pressure at least one described brake cylinder of described at least one drive wheel, makes to comprise that the described energy recovery braking force that is applied to described at least one drive wheel and the total braking force of described hydraulic braking force can equal and the corresponding braking force that requires of the current operation status of described brake service member.
(34) according to each described hydraulic brake system in the pattern (20) to (33), wherein said pressure-source communication control device comprises power pressure source connected component, described power pressure source connected component divides described hydraulic booster and described master cylinder cut-out and allows described power pressure source to be communicated with the described part that crosses from described intersection, and wherein said brake cylinder is communicated with control convenience and comprises each brake cylinder connected component, described each brake cylinder connected component switches to its described first serviceability with described separation device and communicates with each other to allow described first partial sum second part that crosses that crosses, and controls described indivedual pressure control valve device and be communicated with the described part that crosses to allow each described brake cylinder.
When the corresponding value of serviceability that need be controlled as corresponding to each hydraulic pressure in the brake cylinder of all four wheels with the brake service member, when the deceleration/decel of vehicle need be controlled as the corresponding value of serviceability with the brake service member, when carrying out energy recovery cooperation control, perhaps when operation during automatic brake (for example, when carrying out cruising control, when according to Ben Che and the execution of the relative position relation between another vehicle that it travels previously control of braking, perhaps when vehicle parking is carried out control of braking), expect all four brake cylinders and power pressure-source communication.
Can jointly be controlled corresponding to each hydraulic pressure in the brake cylinder of four wheels, perhaps Be Controlled independently of one another.
(35) a kind of hydraulic brake system that uses in vehicle, described vehicle have a plurality of wheels and can be by the manual brake service member of operation of the chaufeur of described vehicle, and described device comprises:
The Manual pressure source, comprise (a) hydraulic booster, its corresponding first hydraulic pressure of operating effort after the operating effort that is applied to described brake service member by chaufeur provides power-assisted and generation and described power-assisted, (b) master cylinder, its produce with as corresponding second hydraulic pressure of operating effort after the described power-assisted of the output of described hydraulic booster;
Whether power pressure source, itself and chaufeur operate described brake service member irrespectively by utilizing power to produce the 3rd hydraulic pressure, and it with described the 3rd fluid control is and the corresponding value of the current state of described vehicle;
A plurality of hydraulic brakes, it is provided with explicitly with described a plurality of wheels respectively and comprises separately brake cylinder, and in described a plurality of hydraulic brake each when a corresponding sap pressure supply in described brake cylinder in described wheel corresponding one apply hydraulic braking force;
Part crosses, comprise (a) first part that crosses, it is connected at least one first brake cylinder in the brake cylinder, and hydraulic booster and power pressure source are connected to first part that crosses with being connected in parallel to each other, (b) second part that crosses, it is connected at least one second brake cylinder in the brake cylinder, and master cylinder is connected to second part that crosses, (c) separation device, it optionally switches to wherein said separation device and allows described first partial sum described second first serviceability that communicate with each other of part that crosses that crosses, and wherein said separation device is with described first partial sum described second second serviceability that part cuts off each other that crosses that crosses; With
A plurality of indivedual pressure control valve devices, in described a plurality of indivedual pressure control valve devices each comprises that being arranged on the described partial sum that crosses increases control cock corresponding to the pressure between at least one described brake cylinder of described each indivedual pressure control valve device, and comprise that the pressure between the liquid storage tank that is arranged on described at least one brake cylinder and savings hydraulic oil reduces control cock, and the hydraulic pressure in described at least one brake cylinder of each control in described a plurality of indivedual pressure control valve devices, each in each pressure increase valve of wherein said indivedual pressure control valve devices comprises Electromagnetically-operating control cock open in usual.
According to the hydraulic brake system of pattern (35) can with according to one or more the combining in each technical characterictic of above-mentioned pattern (1) to (34).
Description of drawings
Read following detailed description in conjunction with the drawings, will understand above-mentioned and optional aim, feature and advantage of the present invention better the preferred embodiment of the present invention, in the accompanying drawing:
Fig. 1 is the scheme drawing of the self-propelled vehicle of the hydraulic brake system that comprises that the present invention is applied to;
Fig. 2 is the scheme drawing in the loop of hydraulic brake system;
Fig. 3 is the cutaway view of the Linear Control valve device that adopts of hydraulic brake system;
Fig. 4 is the block diagram that the outward appearance of the hydraulic control unit that hydraulic brake system adopts is shown;
Fig. 5 is the view of the operation mode (Mode A) that is used to explain hydraulic brake system;
Fig. 6 is the view that is used to explain another operation mode (Mode B) of hydraulic brake system;
Fig. 7 is the view that is used to explain another operation mode (pattern C) of hydraulic brake system;
Fig. 8 is the view that is used to explain another operation mode (pattern D) of hydraulic brake system;
Fig. 9 is the view that is used to explain another operation mode (pattern E) of hydraulic brake system;
Figure 10 is the table that is illustrated in each serviceability of different valves in each of aforesaid operations pattern (Mode A is to E) of hydraulic brake system;
Figure 11 is the diagram of circuit of expression by the model select program of the storage part branch storage of the braking ECU (electronic control unit) of hydraulic brake system;
Figure 12 is the diagram of circuit of expression by the control cock control program of the storage part branch storage of braking ECU;
Figure 13 is the diagram of circuit of expression by the energy recovery cooperation control program of the storage part branch storage of braking ECU;
Figure 14 A illustrates (a) the brake service power controlled according to energy recovery cooperation control program and (b) diagram of curves that concerns of first between the braking force;
Figure 14 B illustrates (a) the brake service power controlled according to energy recovery cooperation control program and (b) diagram of curves that concerns of second between the braking force;
Figure 15 is the scheme drawing corresponding to Fig. 2, shows the loop of the modification of hydraulic brake system shown in Figure 2;
Figure 16 is the scheme drawing corresponding to Fig. 1, shows another self-propelled vehicle that comprises as another hydraulic brake system of second embodiment of the invention;
Figure 17 is the scheme drawing corresponding to Fig. 2, shows the loop of the hydraulic brake system of Figure 16;
Figure 18 is the table corresponding to Figure 10, shows each serviceability of the different valves in each of five operation modes (model F is to J) of hydraulic brake system of Figure 16;
Figure 19 is the view of operation mode (model F) that is used to explain the hydraulic brake system of Figure 16;
Figure 20 is the view of another operation mode (pattern G) that is used to explain the hydraulic brake system of Figure 16;
Figure 21 is the view of another operation mode (pattern H) that is used to explain the hydraulic brake system of Figure 16;
Figure 22 is the view of another operation mode (pattern I) that is used to explain the hydraulic brake system of Figure 16;
Figure 23 is the view of another operation mode (pattern J) that is used to explain the hydraulic brake system of Figure 16;
Figure 24 is the diagram of circuit corresponding to Figure 11, the model select program that expression is stored by the braking ECU of the hydraulic brake system of Figure 16;
Figure 25 is the diagram of circuit corresponding to Figure 12, and expression is by the control cock control program of the storage part branch storage of braking ECU; With
Figure 26 is the diagram of circuit of expression by the power fluid Leak Detection program of the storage part branch storage of braking ECU.
The specific embodiment
Below, with reference to the accompanying drawings, describe in detail according to a preferred embodiment of the invention.
[first embodiment]
As shown in Figure 1, this hydraulic brake system is adopted by four-wheel " hybrid power " self-propelled vehicle, it has the near front wheel 10 of being driven by " hybrid power " driving arrangement 18 and off front wheel 12 as two drive wheel, and " hybrid power " driving arrangement 18 comprises motorized motions equipment 14 and internal combustion driving arrangement 16.The driving power of hybrid driving apparatus 18 is delivered to two front- wheels 10,12 via each axle drive shaft 24,26.
Internal combustion driving arrangement 16 comprises the Engine ECU (electronic control unit) 32 of driving engine 30 and 30 operations of control driving engine.Motorized motions equipment 14 comprises electrical motor 34, the storage battery 36 as electrical energy storage, dynamotor 38, electric energy converting equipment 40, electrical motor ECU 42 and power distribution equipment 44.Power distribution equipment 44 adopts the compound planet gear (not shown) that comprises sun wheel, gear ring and planetary wheel carrier, and dynamotor 38 is connected to sun wheel, output link 46 is attached to gear ring and electrical motor 34 is connected to gear ring, and the output shaft of driving engine 30 is connected to planetary wheel carrier.Driving engine 30, electrical motor 34 and dynamotor 38 are controlled to make " hybrid power " driving arrangement 18 to be selectively placed on its first serviceability and second serviceability, only the driving torque of electrical motor 34 is passed to output link 46 in first serviceability, and the driving torque both of the driving torque of driving engine 30 and electrical motor 34 is passed to output link 46 in second serviceability.The driving power that is delivered to output link 46 further is delivered to axle drive shaft 24,26 via reduction gear unit and differential gear unit (not shown).
Electric energy converting equipment 40 comprises inverter and is controlled by electrical motor ECU 42.Under the current control of inverter, at least electrical motor 34 is selectively placed in its driving condition and the charge condition, in driving condition to electrical motor 34 supply from the electric energy (being energy) of storage battery 36 and make its rotation, electrical motor 34 is owing to energy recovery braking be used as electric energy generator in charge condition, and charges to storage battery 36.In charge condition, the energy recovery braking torque is applied to left and right sides front-wheel 10,12.So motorized motions equipment 14 can be regarded as the energy recovery brake equipment, its energy recovery owing to electrical motor 34 is braked and is applied the energy recovery braking torque to two front-wheels 10,12.Electrical motor ECU 42 controls electric energy converting equipment 40 based on the order that receives from hybrid power ECU 48.
This hydraulic brake system comprises as friction braking equipment and is installed in hydraulic brake circuit 50 on the hybrid vehicle.As shown in Figure 2, left and right sides front- wheel 10,12 is provided with hydraulic brake 55FL, 55FR separately, it comprises lining pad separately and brake cylinder separately 52,54 that each all is used as friction member, and hydraulic pressure is applied to each brake cylinder corresponding lining pad is pressed against on the rotating member with corresponding wheel 10,12 rotations.That is to say that two brake cylinders 52,54 are applied to two front- wheels 10,12 with hydraulic brake torque separately.Thus, at least one in hydraulic brake torque and the energy recovery braking torque is applied to two front- wheels 10,12 with the rotation separately of restriction front- wheel 10,12.
As shown in Figure 2, hydraulic brake circuit 50 also comprises except two brake cylinders 52,54 corresponding to two front-wheels 10,12: corresponding to the brake cylinder separately 60,62 of two hydraulic brake 59RL, 59RR of left and right sides trailing wheel 56,58; Power fluid potential source 64; With master cylinder equipment 66 (being provided with hydraulic booster) as the hand-hydraulic source.
Power fluid potential source 64 (hereinafter referred to as power pressure source 64) comprises pumping unit 72 and the reservoir 74 with pump 70 and pump motor 71.Pump 70 is from pressurizeing as liquid storage tank 75 pumps hydraulic oil of low pressure source and to fluid.If the hydraulic pressure on the high pressure side of pump 70 surpasses reference value, then hydraulic oil returns the low pressure side of pump 70 via reducing valve 76.Accumulated by reservoir 74 from the hydraulic oil of pump 70 outputs, and control pump electrical motor 72 is so that the hydraulic pressure in the reservoir 74 remains in the term of reference.
The master cylinder equipment 66 (hereinafter referred to as Manual pressure source 66) that is provided with hydraulic booster comprises hydraulic booster 78 and master cylinder 80.
When brake pedal 90 was stepped on by chaufeur, power piston 92 and pressurizing piston 84 moved forward, and be adjusted to and have been applied to the hydraulic pressure of the corresponding value of operating effort of brake pedal 90 to 96 supplies of servo-unit chamber.Therefore, pressurizing piston 84 by being applied to pedal 90 power and auxiliary force (promptly with servo-unit chamber 96 in the corresponding power of hydraulic pressure) move forward, so the hydraulic pressure in the pressurized compartment 86 increases.
In the present embodiment, hydraulic brake circuit 50 comprises power pressure source 64 and Manual pressure source 66, and Manual pressure source 66 comprises hydraulic booster 78 and master cylinder 80.Power pressure path 10 0, servo-unit pressure channel 102 and cylinder pressure channel 104 are connected respectively to the servo-unit chamber 96 of power pressure source 64, hydraulic booster 78 and the pressurized compartment 86 of master cylinder 80.The cylinder pressure channel 104 that is connected to the pressurized compartment 86 of master cylinder 80 is associated with stroke simulator equipment 106, and stroke simulator equipment 106 comprises stroke simulator 110 and simulator control valve 112.Simulator control valve 112 is normally closed Electromagnetically-operating close/open valves, and it keeps closing when electric current is not fed to the coil of valve 112.
In the present embodiment, between each brake cylinder 52,54,60,62 of 64,78,80 and four wheels 10,12,56,58 of above-mentioned three hydraulic power sources, be provided with hydraulic control unit 150 (hereinafter referred to as pressure control unit 150).
As shown in Figure 4, pressure control unit 150 comprises single block 152, and it is as described below to have a plurality of hydraulic oil channels and a plurality of Electromagnetically-operating control cock.
In addition, three fluid passages 210,212,214 are connected to main channel 160 with being connected in parallel to each other.The first fluid passage 210 is connected to power pressure path 10 0; The second fluid passage 212 is connected to servo-unit pressure channel 102; And the 3rd fluid passage 214 is connected to cylinder pressure channel 104.Below, three fluid passages 210,212,214 will be hereinafter referred to as power pressure channel 210, servo-unit pressure channel 212 and cylinder pressure channel 214, because need not three fluid passages 210,212,214 of will be in the block 152 forming and distinguish and come from being arranged on respective channel 100,102,104 outside the block 152.As shown in Figure 2, power pressure channel 210 and servo-unit pressure channel 212 are connected to the first passage 202 as main channel 160 firsts; And cylinder pressure channel 214 is connected to the second channel 204 as main channel 160 second portions.
In the present embodiment, main channel 160 (first passage 202 and second channel 204) and separator valve 200 are cooperated each other and are constituted the part 216 that crosses; First passage 202 is corresponding to first part that crosses; And second channel 204 is corresponding to second part that crosses.In addition, four pressure increases 172,174,176,178 and four pressure of control cock and reduces control cock 192,194,196,198 and cooperate each other to constitute four indivedual fluid control valve equipment 218 respectively.
Servo-unit pressure channel 212 is provided with servo-unit and is communicated with control cock 222; And cylinder pressure channel 214 is provided with cylinder and is communicated with control cock 224.Two each that are communicated with in the control cock 222,224 all are the Electromagnetically-operating close/open valves open in usual that stays open when electric current is not fed to the coil of each control cock.
Power pressure channel 210 is provided with Linear Control valve device 230, and it comprises that as shown in Figure 3 pressure increases linear control valve 232 and pressure reduces linear control valve 234.In two linear control valves 232,234 each all comprises coil 236, and is to keep the normally closed Electromagnetically-operating close/open valve of closing when electric current is not fed to the coil 236 of each control cock.More specifically, in each of two linear control valves 232,234, valve member 240 limits (F1+F3:F2) with respect to the position of valve seat 242 by the relation between following three power, promptly with the bias force F2 of the corresponding electromagnetic actuation force F1 of the electric current that is fed to coil 236, spring 238 and the operating effort F3 that causes with the corresponding pressure reduction of difference of each hydraulic pressure of the front and back of each valve 232,234.Can control each hydraulic pressure poor of the front and back of each valve 232,234 by the electric current that control continuously is fed to coil 236 continuously.Particularly, pressure poor corresponding to each hydraulic pressure of power pressure source 64 and main channel 160 of the difference of each hydraulic pressure of front and back that increase linear control valve valve 232; And the difference of each hydraulic pressure that pressure reduces the front and back of linear control valve 234 reduces each hydraulic pressure poor of passage 180 corresponding to main channel 160 and pressure.Each that increases control cock 172 to 178 at four pressure all is opened and four pressure reduces in the control cock 192 to 198 under the corresponding pent state, and the hydraulic pressure of main channel 160 is corresponding to the hydraulic pressure in four brake cylinders 52,54,60,62 corresponding one.
Pressure increases linear control valve 232 also as power pressure-source communication control cock, and it is normally closed when electric current is not fed to its coil 236, with power pressure source 64 from the main channel 160 or the part 216 that crosses cut off.In addition, are normally closed valves because pressure reduces linear control valve 234, so control cock 234 160 is cut off liquid storage tank 75 from the main channel when electric current is not fed to its coil 236.Therefore, can think that the liquid storage tank 75 as low pressure source is connected to main channel 160 or the part 216 that crosses.
Be connected to the having of importation of braking ECU 250: the reservoir pressure sensor 300 that detects the pressure in the reservoir 74; Master cylinder pressure sensor 302, it detects and is arranged in the hydraulic pressure that cylinder is communicated with the upstream side part of control cock 224 upstream sides in the cylinder pressure channel 214; Controlled pressure sensor 304 is arranged in the hydraulic pressure that pressure increases the downstream part in linear control valve 232 downstreams in its inspection power pressure channel 210; With brake service condition detecting device 306, it detects the serviceability of brake pedal 90.In addition, be connected to via separately driving circuit (not shown) braking ECU 250 the importation also have above-mentioned Electromagnetically-operating control cock (that is, four pressure increase 172 to 178, four pressure of control cock reduce control cock 192 to 198, separator valve 200, two be communicated with 222,224, two linear control valves 232,234 of control cock and simulator control valve 112) each coil and pump motor 71.
More specifically, the hydraulic pressure in the pressurized compartment 86 of cylinder pressure transducer 302 detection master cylinders 80.
Controlled pressure sensor 304 detected hydraulic pressure are that pressure increases the hydraulic pressure on the high pressure side that hydraulic pressure on the low pressure side of linear control valve 232 and pressure reduces linear control valve 234.So, can be used to control in two linear control valves 232,234 each by sensor 304 detected pressure.In addition, under two linear control valves 232,234 and separator valve 200 pent states, by the hydraulic pressure in the sensor detected pressure representative servo-unit chambers 96 304.Therefore, can be used to determine hydraulic pressure in the servo-unit chamber 96 by sensor 304 detected pressure.In addition, increase that control cock 172 to 178 is opened and four pressure reduce under control cock 192 to 198 closing state, the hydraulic pressure in each of four brake cylinders of sensor 304 detected pressure representative 52,54,60,62 at separator valve 200 and four pressure.So sensor 304 detected pressure can be used to determine the hydraulic pressure in each brake cylinder 52,54,60,62.
Brake service condition detecting device 306 comprises with in the lower part at least one: the operational stroke sensor that (a) detects the operational stroke of brake pedal 90, (b) detect the operating effort sensor of the operating effort be applied to brake pedal 90 and (c) whether detect brake pedal 90 at the brake switch that is jammed on.Therefore, brake service condition detecting device 306 can detect the current operation status of brake pedal 90.
Below, with the as above operation of this hydraulic brake system of structure of explanation.
This hydraulic brake system is carried out energy recovery cooperation control, wherein is controlled to be equal to the desired total brake torque of chaufeur as being applied to the energy recovery braking torque of drive wheel 10,12 and being applied to the total brake torque that drives with the friction braking torque sum of non-driving wheel 10,12,56,58.
For this reason, braking ECU 250 calculates the desired total brake torque of chaufeur based on brake service condition detecting device 306 detected values (alternatively and cylinder pressure transducer 302 detected values).In addition, braking ECU 250 in determining following three minimum item as desired energy recovery braking torque: (a) as based on the upper limit of the determined energy recovery braking torque of rotating speed of for example electrical motor 34 with the relevant upper limit of electric energy generating, (b) conduct is based on the upper limit relevant with power storage of the upper limit of the determined energy recovery braking torque of power storage capacity of for example storage battery 36, with (c) upper limit relevant with the brake service state as the upper limit of the determined energy recovery braking torque of operating effort that is applied to brake pedal 90 based on chaufeur.Above-mentioned information sets (a) and (b) are fed to braking ECU 250 from hybrid power ECU 48, and above-mentioned information sets (c) is obtained by braking ECU 250 as the desired total brake torque of above-mentioned chaufeur.The information of the energy recovery braking torque that requires that expression is so determined is fed to hybrid power ECU48 from braking ECU 250.
The expression that hybrid power ECU 48 will so receive requires the information of energy recovery braking torque to be fed to electrical motor ECU 42.Electrical motor ECU 42 to control the energy recovery braking torque that is applied to the near front wheel 10 and off front wheel 12 by electrical motor 34, makes the energy recovery braking torque can equal desired energy recovery braking torque to electric energy converting equipment 40 provision commands.Electrical motor 34 is controlled by electric energy converting equipment 40.
The information of the actual operating state (for example rotating speed) of expression electrical motor 34 is fed to hybrid power ECU 48 from electrical motor ECU 42.Based on the actual operating state of electrical motor 34, hybrid power ECU48 determines to reclaim braking torque by the electrical motor 34 actual actual energies that are applied on two drive wheels 10,12, and reclaims the information of braking torque to braking ECU 250 supply expression actual energies.
Below, carry out above-mentioned energy recovery cooperation control and comprise that for example the system of hybrid power ECU 48 will be called as " hybrid power " system.
Figure 13 only represents the energy recovery cooperation control program carried out with the predetermined period time cycle when allowing energy recovery cooperation control.
At first, at step S1 place, braking ECU 250 determines the desired total brake torque F* of chaufeur.At step S2 place, braking ECU 250 receives the information of two kinds of upper limits of expression energy recovery braking torque from hybrid power ECU 48.At step S3 place, braking ECU 250 determines desired energy recovery braking torque.At step S4 place, braking ECU 250 receives the information that the expression actual energy reclaims braking torque FE from hybrid power ECU 48.At step S5 place, braking ECU 250 determines desired hydraulic brake torque (F*-FE) based on the energy recovery braking torque and the desired total brake torque of reality; And at step S6 place, braking ECU 250 produces control command or value (being electric current I), and controlling valu is outputed to Linear Control valve device 230 to produce desired hydraulic brake torque.
As mentioned above, in energy recovery cooperation control, determine the target hydraulic of each self-hydraulic in the brake cylinder 52,54,60,62 according to reclaim institute's hydraulic brake torque that requires that braking torque and desired total brake torque determine based on actual energy, and definitely will be supplied to each electric current that pressure increase linear control valve 232 and pressure reduce each coil of linear control valve 234.For this reason, there are two kinds of modes.Figure 14 A shows first mode, wherein energy recovery drg (being electrical motor 34) preferentially be operated and lacked the total brake torque that requires compensate by hydraulic brake (mainly being the operation that pressure increases linear control valve 232); And Figure 14 B shows second mode, and wherein hydraulic brake at first is operated, and hydraulic brake torque is reduced one and the corresponding amount of actual energy recovery braking torque by the operation that pressure reduces linear control valve 234.In the present embodiment, can select in two kinds of modes any.So,, also can carry out energy recovery cooperation control with the control accuracy of expectation even pressure increase linear control valve 232 and pressure reduce a possibility et out of order in the linear control valve 234.
This hydraulic brake system can optionally operation in one of Mode A, B, C, D and E.Figure 10 shows Electromagnetically-operating control cock 112,172 to 178,192 to 198,200,222,224,230 (232,234) serviceability separately in each pattern.
In Mode A, as shown in Figure 5, servo-unit is communicated with control cock 222 and cylinder connection control cock 224 boths close (cut-out), and simulator control valve 112 is opened, and separator valve 200 is opened.Four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).In Mode A, control is fed to the electric current of the coil 236 of Linear Control valve device 230.
Therefore, four brake cylinders 52,54,60,62 not only cut off with master cylinder 80 but also with hydraulic booster 78, and stroke simulator 110 is communicated with the pressurized compartment 86 of master cylinder 80.All brake cylinders 52,54,60,62 are communicated with power pressure source 64 via Linear Control valve device 230, and by controlling each hydraulic pressure that linear control valve equipment 230 comes in the control brake cylinder 52,54,60,62.Operate hydraulic brake 55FL, 55FR, 59RL, 59RR by the hydraulic pressure of control like this.Because stroke simulator 110 is communicated with the pressurized compartment 86 of master cylinder 80, so the sensation of driver's operation brake pedal 90 can be held enough to stablize.Simultaneously, in patent documentation 3 or patent documentation 4 disclosed hydraulic braking systems, the Linear Control valve device is arranged between hydraulic booster and the brake cylinder, and the hydraulic pressure in the servo-unit is used to each hydraulic pressure in the control brake cylinder.Therefore, be fed to the amount instability of the hydraulic oil of Linear Control valve device, thereby the fluctuation of pressure of being controlled by linear control valve is very big.That is to say that the conventional hydraulic brake equipment suffers the steerability of low degree.On the contrary, in the present embodiment, because the hydraulic oil of being accumulated by reservoir 74 is supplied to Linear Control valve device 230, so hydraulic brake circuit 50 can be than patent documentation 3 or patent documentation 4 disclosed conventional hydraulic brake equipments supply hydraulic fluid more stably.That is to say that hydraulic brake circuit can reduce the fluctuation of controlled pressure, thereby can enjoy the steerability of improvement degree.
In Mode B, as shown in Figure 6, cylinder is communicated with control cock 224 and closes (cut-out), and servo-unit is communicated with control cock 222 to be opened, and simulator control valve 112 is opened, and separator valve 200 is opened.Four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).In Mode B, do not control the electric current of the coil 236 that is fed to Linear Control valve device 230.
Because there is not electric current to be fed to the coil 236 of Linear Control valve device 230, so increasing linear control valve 232, pressure is closed, and therefore four brake cylinder 52,54,60,62 64 cut-outs from kinetic pressure power source.So both cut off from master cylinder 80 and power pressure source 64 for four brake cylinders 52,54,60,62, and only are communicated with servo-unit chamber 96.Hydraulic pressure in the servo-unit chamber 96 is fed to whole brake cylinders 52,54,60,62 to operate all hydraulic brake 55FL, 55FR, 59RL, 59RR.
In pattern C, as shown in Figure 7, cylinder is communicated with control cock 224 and servo-unit connection control cock 222 boths open, and simulator control valve 112 is closed (cut-out), and separator valve 200 cuts out (cut-out).Four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).In pattern C, do not control the electric current of the coil 236 that is fed to Linear Control valve device 230.
In pattern D, as shown in Figure 8, cylinder is communicated with control cock 224 to be opened, and servo-unit is communicated with control cock 222 and closes (cut-out), and simulator control valve 112 is closed (cut-out), and separator valve 200 cuts out (cut-out).Four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).In pattern D, control is fed to the electric current of the coil 236 of Linear Control valve device 230.
In pattern E, as shown in Figure 9, cylinder is communicated with control cock 224 to be opened, and servo-unit is communicated with control cock 222 and closes (cut-out), and simulator control valve 112 is closed (cut-out), and separator valve 200 is opened.Two pressure increase control cock 172,174 corresponding to the near front wheel 10 and off front wheel 12 are opened, and are closed (cut-out) corresponding to other two pressure increase control cock 176,178 of left rear wheel 56 and off hind wheel 58.Therefore, be communicated with master cylinder 80, make hydraulic brake 55FL, 55FR be operated by master cylinder pressure corresponding to first brake cylinder 52 and second brake cylinder 54 of the near front wheel 10 and off front wheel 12.Cut off from master cylinder 80, hydraulic booster 78 and power pressure source 64 corresponding to the 3rd brake cylinder 60 of left rear wheel 56 and off hind wheel 58 and the 4th brake cylinder 62, so hydraulic brake 59FL, 59FR inoperation.
According to one or two appropriate pattern of selecting above-mentioned Mode A to the E by the model select program of flowcharting shown in Figure 11.Model select program was carried out periodically with the predetermined period time.According to selected one or more patterns, control is fed to each electric current of each coil of Electromagnetically-operating control cock, shown in the table of Figure 10.More specifically, according to controlling the Electromagnetically-operating control cock by the control cock control program of flowcharting shown in Figure 12.
According to the control cock control program, at step S51, S52, S53, S54 and S55 place, braking ECU 250 judges that respectively whether selected one or more pattern is or comprises that whether Mode A, selected one or more patterns be or comprise whether Mode B, selected pattern are whether pattern C, selected pattern are whether pattern D and selected pattern are pattern E.If make affirmative determination at step S51 place, then control proceeds to step S56 to judge selected one or more pattern and whether be or to comprise Mode B.
If selected Mode A but non-selected Mode B, if promptly make negative evaluation at step S56 place, then control proceeds to step S57 with modulated pressure brake circuit 50 in Mode A.That is to say that control is fed to each electric current of each coil of Electromagnetically-operating control cock according to Mode A, as shown in figure 10.In Mode A,, then carry out energy recovery cooperation control for Linear Control valve device 230 if hybrid power system is normal; If but the hybrid power system mal, then the Electromagnetically-operating control cock is controlled to and obtains and the corresponding brake cylinder hydraulic pressure of the desired braking force of chaufeur.
If selected Mode A and Mode B, if promptly make affirmative determination at step S56 place, then control proceeds to step S58 with at Mo ShiA ﹠amp; Modulated pressure brake circuit 50 among the B.In this pattern, cylinder is communicated with control cock 224 closes, and servo-unit is communicated with control cock 222 to be opened, and simulator control valve 112 and separator valve 200 are opened, and control linear control valve equipment 230.
If only selected Mode B, if promptly make affirmative determination at step S52 place, then control proceeds to step S59 with modulated pressure brake circuit 50 in Mode B.Similarly, if selected pattern C, if promptly make affirmative determination at step S53 place, then control proceeds to step S60 with modulated pressure brake circuit 50 in pattern C; If selected pattern D, if promptly make affirmative determination at step S54 place, then control proceeds to step S61 with modulated pressure brake circuit 50 in pattern D; If selected pattern E, if promptly make affirmative determination at step S55 place, then control proceeds to step S62 with modulated pressure brake circuit 50 in pattern E.In each of Mode A, B, C, D and E, according to table control Electromagnetically-operating control cock shown in Figure 10.
In model select program, at first at step S11 place, braking ECU 250 judges whether brake pedal 90 is being operated.If make affirmative determination at step S11 place, then control proceeds to step S12 to judge whether hybrid power system is normal.If make affirmative determination at step S12 place, then control proceeds to step S13 to judge whether to require the quick response of hydraulic brake circuit 50.For example, if the operating mode of brake pedal 90 (for example changes greatly, pushing the speed of the operational stroke of brake pedal 90 surpasses reference value, perhaps be applied to the operating effort of brake pedal 90 or jam on pushing the speed of power and surpass reference value), if perhaps as the departing from of the difference between actual brake cylinder hydraulic pressure and the target hydraulic, then brake ECU 250 and judge and need response fast greater than reference value.
If make negative evaluation at step S13 place, then control proceeds to step S14 with preference pattern A.In this pattern, the pressure of being controlled by Linear Control valve device 230 is supplied to each in four brake cylinders 52,54,60,62.Because hybrid power system is normal, carry out above-mentioned energy recovery cooperation control.Therefore, control is fed to the electric current of the coil 236 of Linear Control valve device 230, makes energy recovery braking torque and hydraulic brake torque sum can equal the desired braking torque of chaufeur.
On the other hand, if make affirmative determination at step S13 place, then control proceeds to step S15 with preference pattern A and Mode B.In this pattern because to brake cylinder 52,54,60,62 supply from both hydraulic oil of hydraulic booster 78 and power pressure source 64, so a large amount of hydraulic oil flows into brake cylinder 52,54,60,62, thereby but brake cylinder hydraulic pressure at high speed increase.
If make negative evaluation at step S12 place, then whether control proceed to step S16 with the communication function of judging braking ECU 250 et out of order, perhaps hybrid power ECU 48 et out of order, proceed to step S17 then and mechanical breakdown has taken place, and proceed to step S18 then to judge whether et out of order of power system with judgement hydraulic booster 78.
More specifically, at step S16 place, for example when not receiving the information that should receive, perhaps when the quantity of information that receives was too big, braking ECU 250 judged its communication function et out of order.In each of above-mentioned situation, braking ECU 250 can judge hybrid power ECU 48 et out of order.If make affirmative determination at step S16 place, then control proceeds to step S19 with preference pattern A or Mode B.When the fault of the fault of having found communication function or hybrid power ECU48, will finish energy recovery cooperation control usually.But, in this case, if preference pattern A or Mode B then can utilize the hydraulic pressure in the power pressure source 64 to a certain extent.
Be programmed at step S19 under the situation of preference pattern A, Linear Control valve device 230 is controlled to make that the hydraulic pressure in the brake cylinder 52,54,60,62 can produce and the corresponding hydraulic braking force of the desired braking force of chaufeur.Because the hybrid power system mal, so do not carry out energy recovery cooperation control.But, Linear Control valve device 230 be controlled to obtain with based on the corresponding hydraulic braking force of operating mode braking force that determined chaufeur requires of brake pedal 90.
Be programmed at step S19 under the situation of preference pattern B, each in the brake cylinder 52,54,60,62 is by hydraulic booster 78 sap pressure supplies.When in the brake cylinder 52,54,60,62 each is communicated with hydraulic booster 78, each brake cylinder 52,54,60,62 is supplied and is applied to the corresponding hydraulic pressure of operating effort of brake pedal 90, thereby compares the increase of the operational stroke that can reduce brake pedal 90 with the situation that each brake cylinder 52,54,60,62 and master cylinder 80 are communicated with.
But in the case, energy recovery cooperation control may finish, and can carry out that energy recovery braking torque wherein reduces gradually and transition control that hydraulic brake torque increases gradually.Can in Mode A, carry out transition control.
At step S17 place, for example normal at electric system, power pressure (being the hydraulic pressure in the reservoir 74) normal but hydraulic pressure in servo-unit 78 or the master cylinder 80 when being significantly less than the corresponding normal value of current operation status with brake pedal 90, braking ECU 250 judges that mechanical breakdown has taken place hydraulic boosters 78.In the case, control proceeds to step S20 with preference pattern D.
In pattern D, corresponding to second brake cylinder 54 of off front wheel 12 and corresponding to the 3rd brake cylinder 60 of left rear wheel 56 by master cylinder 80 supply hydraulic fluids, and be supplied the hydraulic oil of having controlled by Linear Control valve device 230 corresponding to first brake cylinder 52 of the near front wheel 10 with corresponding to the 4th brake cylinder 62 of off hind wheel 58.Therefore, control linear control valve equipment 230 is so that each braking force that is fed to the near front wheel 10 and off front wheel 12 balance well, and each braking force that is fed to left rear wheel 56 and off hind wheel 58 in addition is by balance well.In addition, because the hydraulic oil in the master cylinder 80 is supplied to two brake cylinders 54,60, but not four brake cylinders 52,54,60,62, so can reduce the increase of the operational stroke of brake pedal 90, thus hydraulic oil can be by fast supply to two brake cylinder 54,60.
But step S20 also can be modified to preference pattern A or pattern C.Be programmed at step S20 under the situation of preference pattern A, Linear Control valve device 230 is controlled to make that the hydraulic pressure in the brake cylinder 52,54,60,62 can produce and the corresponding hydraulic braking force of the desired braking force of chaufeur.Be programmed at step S20 under the situation of preference pattern C, be communicated with master cylinder 80 corresponding to second brake cylinder 54 of the near front wheel 12 with corresponding to the 3rd brake cylinder 60 of left rear wheel 56, though the hydraulic pressure in the servo-unit chamber 96 is significantly less than when servo-unit 78 normal value just often.Therefore, hydraulic brake 55FR, 59RL can be operated reliably with corresponding each hydraulic pressure of the operating effort that is applied to brake pedal 90.
At step S18 place, for example when the reservoir pressure as power pressure is lower than reference value, braking ECU 250 judges power systems et out of order (for example pumping unit 72 et out of order or hydraulic oil leak from reservoir 74).In the case, control proceeds to step S21 with preference pattern E.In pattern E, close corresponding to the pressure increase control cock 176 and 178 of left rear wheel 56 and off hind wheel 58, and therefore do not have hydraulic oil to be fed to two trailing wheels 56,58.Because the hydraulic oil that is supplied from master cylinder 80 corresponding to the brake cylinder 52,54 of the near front wheel 10 and off front wheel 12 is so big braking force can be applied to two front- wheels 10,12.
If make negative evaluation,, judge whether whether et out of order or braking ECU 250 are not supplied electric current to braking ECU250 then at step S22 place at step S18 place.If make affirmative determination, then at the preference pattern C of step S23 place at step S22 place.But the selection at the judgement at step S22 place and step S23 place be can't help to brake ECU 250 and is made.In pattern C, if power pressure is very low, then hydraulic booster 78 may not produce sufficiently high hydraulic pressure.But as long as a certain amount of hydraulic oil is stayed in the reservoir 74, servo-unit 78 just can the power brake operating effort.In any case, because be communicated with master cylinder 80 corresponding to second brake cylinder 54 of off front wheel 12 with corresponding to the 3rd brake cylinder 60 of left rear wheel 56, so hydraulic brake 55FR, 59RL can be operated reliably with corresponding each hydraulic pressure of the operating effort that is applied to brake pedal 90.
Simultaneously, braking ECU 250 for example can be modified at linear control valve equipment 230 preference pattern C during et out of order (being control system et out of order).For example, when finding that pressure increase linear control valve 232 or pressure reduce permanent the opening of linear control valve 234, impassabitity uses the hydraulic pressure that is produced by power pressure source 64 to come each hydraulic pressure of control brake cylinder 52,54,60,62.
Simultaneously, in finding four wheels 10,12,56,58, during any one excessive braking slippage, carry out anti-lock (or anti-locking) control for this wheel.In the case, four pressure increase in the control cock 172 to 178 corresponding one and/or four pressure reduce in the control cock 192 to 198 corresponding one as required or be opened or closed, make this wheel be placed in the suitable slip condition.
Therefore, because simple loop 50, this hydraulic brake system can easily switch to Mode A one suitable (or a plurality of) to the E by chaufeur.Therefore, this device can be enjoyed improved operability and steerability.
As clearly visible from the above-mentioned explanation of first embodiment, servo-unit is communicated with control cock 222, cylinder (being master cylinder) and is communicated with control cock 224, pressure and increases storage among linear control valve 232, the braking ECU 250 and carry out by storage among the part of the model select program of the flowcharting of Figure 11 and the braking ECU250 and carry out by the part of the control cock control program of Figure 12 flowcharting and cooperate each other to constitute pressure-source communication control device.Pressure-source communication control device comprises: the cylinder and/or the power pressure source connected component that are made of the part of storage and execution in step S17, S20 and S61 among the braking ECU 250; The servo-unit and/or the power pressure source connected component that constitute by the part of storage and execution in step S16, S19, S57 and S59 among the braking ECU 250; The servo-unit and the power pressure source connected component that constitute by the part of storage and execution in step S13, S15 and S58 among the braking ECU 250; The cylinder relevant and/or the servo-unit connected component that constitute with part with fault by storage and execution in step S22, S23 and S60 among the braking ECU 250.
In addition, the part of storage and execution in step S21 and S62 constitutes brake cylinder connection control convenience among the braking ECU 250.Brake cylinder is communicated with control convenience and comprises that intersection is communicated with control part and left and right sides front wheel brake cylinder connected component.
In addition, in first embodiment, the delivery pressure control convenience that Linear Control valve device 230 constitutes as the element of power pressure source 64.
In first embodiment, be connected to first passage 202 corresponding to first brake cylinder 52 and the 4th brake cylinder 62 of the near front wheel 10 and off hind wheel 58; And second brake cylinder 54 and the 3rd brake cylinder 60 corresponding to off front wheel 12 and left rear wheel 56 are connected to second channel 204.But, can be connected in first passage 202 and the second channel 204 one corresponding to the 3rd brake cylinder 60 of left rear wheel 56 and off hind wheel 58 and the 4th brake cylinder 62; And can be connected in first passage 202 and the second channel 204 another corresponding to first brake cylinder 52 of the near front wheel 10 and off front wheel 12 and second brake cylinder 54.
Can omit Linear Control valve device 230.In the case, power pressure source 64 may be modified as the delivery pressure of pump motor 71 control pumps 70 and controls each hydraulic pressure that is fed to brake cylinder 52,54,60,62 thus.
In first embodiment, select one or more appropriate mode from Mode A to E.But this is also non-essential.For example, other patterns that can adopt master cylinder 80 wherein to be communicated with all brake cylinders 52,54,60,62.
In addition, four pressure increases 172 to 178 and four pressure of control cock and reduces control cock 192 to 198 each can be can't help the Electromagnetically-operating close/open valve and is made of linear control valve.In the case, preferably pressure increase linear control valve is a valve open in usual.In addition, also can control four pressure and increase 172 to 178 and four pressure of control cock and reduce control cock 192 to 198, for example making that the hydraulic pressure in the brake cylinder 52,54,60,62 can be controlled in Mode A or Mode B satisfies the desired braking force of chaufeur.Though Linear Control valve device 230 can be omitted, preferably adopt to make power pressure source 64 be communicated with or from the Electromagnetically-operating control cock of its cut-out with main channel 160.
Not necessarily need energy recovery cooperation control.Linear Control valve device 230 can be controlled to and obtain the desired braking torque of chaufeur.
The part that crosses can not comprise main channel 160, and comprises the connecting device with two hydraulic pressure chambers.Figure 15 shows the modification of hydraulic brake circuit 50, it comprises connecting device 350 and the separator valve 356 with two fluid chambers that separate 352,354, separator valve 356 is arranged in the interface channel that connects two hydraulic pressure chambers 352,354 and optionally switches to its first serviceability and second serviceability, separator valve 356 allows two chambers 352,354 to communicate with each other in first serviceability, and separator valve 356 cuts off two chambers 352,354 each other in second serviceability.Two individual channels 162,168, power pressure channel 210 and servo-unit pressure channels 212 are connected to 352 in two fluid chambers 352,354; And two other individual channels 164,166 and cylinder pressure channel 214 are connected to another fluid chamber 354.Can be communicated with control cock 222, cylinder by the control servo-unit and be communicated with control cock 224, separator valve 356 etc. the brake circuit of this modification is switched to Mode A one suitable (or a plurality of) to the E, as shown in figure 10.
In first embodiment, the near front wheel 10 and off front wheel 12 are drive wheels of vehicle.But the present invention can be applied to wherein that left rear wheel and off hind wheel are the vehicles of drive wheel, perhaps four vehicles that wheel all is a drive wheel wherein.
In first embodiment, block 152 is not provided with power pressure source 64 or stroke simulator equipment 106.But block 152 can be provided with at least one in power pressure source 64 and the stroke simulator equipment 106.
First embodiment relates to hydraulic brake circuit 50, wherein sets up angie type biliquid pressing system in pattern C or pattern D.But the different hydraulic brake systems of formula biliquid pressing system before and after the present invention can be applied to and wherein can set up are for example as the hydraulic brake circuit shown in Figure 16 to 26 454 of second embodiment of the invention.
[second embodiment]
As shown in figure 16, second embodiment has the structure similar to the structure of first embodiment, and following explanation only relates to the different of second embodiment and first embodiment.In a second embodiment, motor vehicle addition ground adopts vehicle distances control (being cruising control) ECU 400, anticollision (or slowing down) ECU 402 and the auxiliary ECU 404 that stops.Vehicle distances control ECU 400 is connected to Engine ECU 32 and braking ECU 250, and among the anticollision ECU 402 and the auxiliary ECU 404 that stops each all is connected to braking ECU 250.
Vehicle distances control ECU 400 control driving engines 30 and each drgs, make detected car and the vehicle that travels in its place ahead between actual relative position relation meet predetermined relation.For example, even brake pedal 90 may be by driver's operation, control ECU 400 also can automatically operate one or more drgs as required.
When detected actual relative position relation shows Ben Che and the vehicle that travels in its place ahead may collide each other the time, anticollision ECU 402 automatically operates one or more drgs, and perhaps driver assistance person is to the operation of brake pedal 90.When collision can not be avoided, anticollision ECU 402 operations slowed down the impact that will be caused by collision.Following image processing equipment 412 can be connected to anticollision ECU402.
Be connected to braking the having of ECU 250: car speed sensor 420, four wheel speed sensors 422 that are provided with explicitly with four wheels 10,12,56,58 respectively, the steering state check implement 424 of steering state that detects this car and four brake cylinder hydraulic pressure transducers 426 that are provided with explicitly with four brake cylinders 52,54,60,62 respectively, and ignition lock 430.Braking ECU 250 is based on the sliding mode of being determined in four wheels 10,12,56,58 each by four wheel speed sensors, 422 detected each speed, and controls based on anti-locking (or anti-lock) control and/or tractive force that the sliding mode of detected each wheel carries out each wheel.
Steering state check implement 424 comprises: detect the steering wheel angle sensor of the angle of bearing circle, the yaw rate sensor that detects vehicle yaw rate or the detection effect horizontal G sensor to the horizontal G (force of inertia) of vehicle.Braking ECU 250 is based on the trend that is judged whether to tend to spin (spinning) by the detected value of sensor that adopts (whether trailing wheel 56,58 horizontal trend of sliding are promptly arranged) or whether the trend (whether the laterally trend of slip of front- wheel 10,12 are promptly arranged) that skids off outside the trend is arranged.
When ignition lock 430 satisfies predetermined condition at first after off-state switches to on-state, braking ECU 250 carries out the initial inspection operation, wherein checks each coil and the pump motor 71 of each sensor, each Electromagnetically-operating control cock.
In the present embodiment, two trailing wheels the 56, the 58th, drive wheel, and two front- wheels 10,12 are not drive wheels.The driving power that comprises " hybrid power " driving arrangement 18 of motorized motions equipment 14 and internal combustion driving arrangement 16 is delivered to two trailing wheels 56,58 via each axle drive shaft 450,452.
As shown in figure 17, hydraulic brake circuit 454 has preceding and the back hydraulic efficiency pressure system, and can be as the two hydraulic brake systems of front and back formula.More specifically, corresponding to being connected to second part 204 that crosses via each individual channels 164,166 as two brake cylinders 52,54 of two front- wheels 10,12 of non-driving wheel; And corresponding to being connected to first part 202 that crosses via each individual channels 162,168 as the brake cylinder 60,62 of two trailing wheels 56,58 of drive wheel.
It is identical with characteristic under the situation of four brake cylinders 52,54,60,62 and master cylinder 80 connections that stroke simulator equipment 106 is designed to its analog feature (as the relation between supposition hydraulic pressure oil mass and the hydraulic pressure).Therefore, when four brake cylinders 52,54,60,62 switched to it from different situations that master cylinder 80 cuts off from its situation about being communicated with master cylinder 80, stroke simulator equipment 106 can prevent to reduce the sensation of driver's operation brake pedal 90 effectively.
This hydraulic brake circuit 454 can be operated in one or two pattern of selecting from model F, G, H, I and J effectively.Figure 18 shows the different operating state of Electromagnetically-operating control cock 112,172 to 178,192 to 198,200,222,224,230 (232,234) in each pattern.
In model F, as shown in figure 19, servo-unit is communicated with control cock 222 and cylinder connection control cock 224 boths close (cut-out), and simulator control valve 112 is opened, and separator valve 200 is opened.In model F, control is fed to the electric current of the coil 236 of Linear Control valve device 230.Jointly be applied under the situation of four brake cylinders 52,54,60,62 at the hydraulic pressure by Linear Control valve device 230 control, four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).On the other hand, under the situation that each hydraulic pressure in four brake cylinders 52,54,60,62 is individually controlled, four pressure increase 172 to 178 and four pressure of control cock and reduce control cock 192 to 198 by individually control (that is four indivedual pressure-gradient control valve equipment 218 of control).
In pattern G, as shown in figure 20, cylinder is communicated with control cock 224 and closes (cut-out), and servo-unit is communicated with control cock 222 to be opened, and simulator control valve 112 is opened, and separator valve 200 is opened.In pattern G, do not control the electric current of the coil 236 that is fed to Linear Control valve device 230.Jointly be fed under the situation of four brake cylinders 52,54,60,62 with the corresponding hydraulic pressure of the operating effort that is applied to brake pedal 90, four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).On the other hand, under the situation that each hydraulic pressure in four brake cylinders 52,54,60,62 is individually controlled, 172 to 178 and four pressure of four pressure increase control cock reduce control cock 192 to 198 and are individually controlled.
In pattern H, as shown in figure 21, cylinder is communicated with control cock 224 and servo-unit connection control cock 222 boths open, and simulator control valve 112 is closed (cut-out), and separator valve 200 cuts out (cut-out).Four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).In pattern H, do not control the electric current of the coil 236 that is fed to Linear Control valve device 230.Two brake cylinders 52,54 corresponding to the near front wheel 10 and off front wheel 12 are communicated with master cylinder 80, and are communicated with servo-unit chamber 96 corresponding to two other brake cylinder 60,62 of left rear wheel 56 and off hind wheel 58.Because separator valve 200 is closed, so the two hydraulic brake systems of formula before and after above-mentioned two hydraulic efficiency pressure systems are independently of one another and cooperation constitutes mutually.
And then ignition lock 430 is after off-state switches to on-state, and hydraulic brake circuit 454 is in pattern H.So, in pattern H, carry out the initial inspection operation.Therefore, under the state that power pressure source 64 cuts off from brake cylinder 52,54,60,62, can check pumping unit 72.
In pattern I, as shown in figure 22, cylinder is communicated with control cock 224 to be opened, and servo-unit is communicated with control cock 222 and closes (cut-out), and simulator control valve 112 is closed (cut-out), and separator valve 200 cuts out (cut-out).Four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).In pattern I, control is fed to the electric current of the coil 236 of Linear Control valve device 230.Two brake cylinders 52,54 corresponding to the near front wheel 10 and off front wheel 12 are communicated with master cylinder 80, and are communicated with power pressure source 64 via Linear Control valve device 230 corresponding to two other brake cylinder 60,62 of left rear wheel 56 and off hind wheel 58.
In pattern J, as shown in figure 23, cylinder is communicated with control cock 224 to be opened, and servo-unit is communicated with control cock 222 and closes (cut-out), and simulator control valve 112 is closed (cut-out), and separator valve 200 is opened.Four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close (cut-out).In pattern J, be communicated with master cylinder 80 corresponding to four brake cylinders 52,54,60,62 of whole four wheels 10,12,56,58.
According to one or two appropriate pattern of selecting above-mentioned model F to the J by the model select program of flowcharting shown in Figure 24.Model select program was carried out with the predetermined period time cycle.According to selected one or more patterns, control is fed to each electric current of each coil of Electromagnetically-operating control cock, shown in the table of Figure 18.More specifically, according to controlling the Electromagnetically-operating control cock by the control cock control program of flowcharting shown in Figure 25.
The control program (as shown in figure 12) that adopts among the control cock control program (as shown in figure 25) that adopts among second embodiment and first embodiment is similar.According to the control cock control program, at step S101, S102, S103, S104 and S105 place, braking ECU 250 judges that respectively whether selected one or more pattern is or comprises that whether model F, selected one or more patterns be or comprise whether pattern G, selected pattern are whether pattern H, selected pattern are whether pattern I and selected pattern are pattern J.If make affirmative determination at step S101 place, then control proceeds to step S106 to judge selected one or more pattern and whether be or to comprise pattern G.
According to selected one or more patterns, control each electric current that is fed to the Electromagnetically-operating control cock at step S107, S108, S109, S110, S11 and S112 place, shown in the table of Figure 18.
In model select program, at first at step S151 place, braking ECU 250 judges whether normally (for example this hydraulic brake system, whether this hydraulic brake system can electronic modulated pressure braking force), if and made affirmative determination at step S151 place, then control would proceed to step S152 to judge whether brake pedal 90 is operated.
If make affirmative determination at step S152 place, then control proceeds to step S153 to judge whether vehicle is in dead ship condition.If make negative evaluation at step S153 place, then control proceeds to step S154 to judge whether vehicle is under anti-locking (anti-lock) control.If make negative evaluation at step S154 place, then control proceeds to step S155 to judge whether to require the quick response of this hydraulic brake system.If make negative evaluation at step S155 place, then control proceeds to step S156 to judge whether the air detection sign is set to the ON state.
At step S153 place, braking ECU 250 judges by car speed sensor 420 detected Vehicle Speed whether be not higher than reference velocity (vehicle can be regarded as stopping under this reference velocity), and if the detected speed of a motor vehicle be not higher than reference velocity then judge that vehicle is in dead ship condition.
At step S154 place, braking ECU 250 judges whether the anti-lock controlled flag is set to the ON state, and if make affirmative determination, judge that then vehicle is in anti-lock control down.Carry out anti-lock control according to the anti-lock control program.More specifically, braking ECU 250 detects corresponding one sliding mode in four wheels 10,12,56,58 based on each detected speed in four wheel speed sensors 422, if and (for example satisfy anti-lock control entry condition, if the slippage of each wheel surpasses reference value), then brake ECU 250 anti-lock controlled flag and be set to the ON state.Under ABS (Anti-lock Braking System) control, braking ECU 250 is independent of other pressure and increases control cock and other pressure and reduce control cock and control four pressure and increase in the control cock 172 to 178 corresponding one and/or four pressure and reduce in the control cock 192 to 198 corresponding one, with the hydraulic pressure in the control brake cylinder 52,54,60,62 corresponding one and make each wheel enter suitable sliding mode thus.If satisfy anti-lock control termination condition (for example), then brake ECU 250 the anti-lock sign is reset to the OFF state, and finish anti-lock control thus if if vehicle has stopped or slippage is fully reduced.
At step S155 place, if for example pushing the speed of the operational stroke of brake pedal 90 is higher than reference velocity, surpass reference velocity (power of jamming on can directly be detected by the operating effort sensor if be applied to the operating effort of brake pedal 90 or jam on pushing the speed of power, perhaps can pass through to detect the hydraulic pressure indirect detection in the master cylinder 80), if perhaps the actual brake cylinder hydraulic pressure corresponding to each wheel departs from objectives hydraulic pressure greater than reference quantity (if perhaps the actual deceleration degree departs from objectives deceleration/decel greater than reference quantity), then brake ECU 250 and judge response fast.
At step S156 place, braking ECU 250 judges whether the air detection sign is set as the ON state.Have air if carry out air detection program (not shown) and judge in hydraulic efficiency pressure system, then the air detection sign is set as the ON state.For example, if brake pedal 90 with respect to the practical operation stroke of actual brake cylinder hydraulic pressure greater than reference operational stroke according to the operational stroke of brake pedal 90 and the determined brake pedal 90 of predetermined relationship between the brake cylinder hydraulic pressure, then can judge and have air, because exist the situation of air to compare, need to consume more substantial hydraulic oil and make brake cylinder hydraulic pressure increase to certain value with the situation that does not have air.Can be by utilizing existence that the hydraulic oil of accumulating in the reservoir 74 detects air whether.In addition, can detect whether there is air at each brake cylinder 52,54,60,62.
If each place at step S153, S154, S155 and S156 makes negative evaluation, then control proceeds to step S157 with preference pattern F.
In model F, can with the Mode A that adopts among first embodiment in carry out the energy recovery control of cooperating similarly.But, under the situation of not carrying out energy recovery cooperation control, actual brake cylinder hydraulic pressure can be controlled as and the corresponding value of the current operation status of brake pedal 90, and perhaps the actual deceleration degree of vehicle can be controlled as and the corresponding desired deceleration of the current operation status of brake pedal 90.Under one situation of back, four pressure increase control cock 172 to 178 and stay open, and four pressure reduce control cock 192 to 198 and keep closing, therefore four brake cylinders 52,54,60,62 to each hydraulic pressure be controlled as identical or common hydraulic pressure.Under the situation of carrying out anticollision (or slowing down) control (for example braking aux. controls), each hydraulic pressure in four brake cylinders 52,54,60,62 is controlled as identical or common hydraulic pressure.
On the other hand, under the situation that brakig force distribution is controlled before and after carrying out, perhaps under the situation of carrying out the parking aux. controls, 172 to 178 and four pressure of four pressure increase control cock reduce control cock 192 to 198 individually to be controlled, individually to control each hydraulic pressure in four brake cylinders 52,54,60,62.
If the air detection sign is set to the ON state, then make affirmative determination, and control proceeds to step S158 with preference pattern G at step S156 place.
As explained above, if there is air, then need to consume more substantial hydraulic oil.In the case, if preference pattern J and brake cylinder 52,54,60,62 are communicated with master cylinder 80, then need to increase the operational stroke of brake pedal 90.On the contrary, if preference pattern G and brake cylinder 52,54,60,62 are communicated with servo-unit chamber 96, can prevent that then the operational stroke of brake pedal 90 from excessively increasing.In addition, compare with the situation of preference pattern F and can also reduce energy consumption.
The speed response is then made affirmative determination at step S155 place if seek quickness, and control proceeds to step S159 with preference pattern F and pattern G.Therefore, from both hydraulic oil of power pressure source 64 and hydraulic booster 78, and can improve the increase speed of hydraulic pressure in the brake cylinder 52,54,60,62 to brake cylinder 52,54,60,62 supply.
If the anti-lock controlled flag is set as the ON state, then make affirmative determination, and control proceeds to step S160 with preference pattern G at step S154 place.Based on the hydraulic pressure in the hydraulic booster 78 that is arranged on control cock equipment 218 upstream sides, by indivedual pressure control valve devices 218 each hydraulic pressure in the control brake cylinder 52,54,60,62 individually.In anti-lock control, preferably the hydraulic pressure of control cock equipment 218 upstream sides has the corresponding value of operating effort that is applied to brake pedal 90 with chaufeur.In addition, brake cylinder 52,54,60,62 does not need than any hydraulic pressure higher with the corresponding value of the operating effort that is applied to brake pedal 90.Therefore, it is favourable using hydraulic booster 78.In addition, compare the amount that can reduce the energy that consumed with the situation of preference pattern F.
If vehicle is in dead ship condition, then make affirmative determination, and control proceeds to step S161 to judge whether the carrying out oil liquid leakage detecting operation at step S153 place.If satisfy predetermined oil liquid leakage testing conditions, then start the oil liquid leakage detecting operation.For example, if vehicle is in dead ship condition, the serviceability of brake pedal 90 is stable, and pump motor 71 is not operated, and then can judge and satisfy the oil liquid leakage testing conditions.If make negative evaluation at step S161 place, then control proceeds to step S162 with preference pattern H.On the other hand, if make affirmative determination at step S161 place, then control proceeds to step S163 with preference pattern I.
In pattern H, be communicated with master cylinder 80 corresponding to the brake cylinder 52,54 of the near front wheel 10 and off front wheel 12, and be communicated with servo-unit chamber 96 corresponding to the brake cylinder 60,62 of left rear wheel 56 and off hind wheel 58.If vehicle is in dead ship condition, then do not need serviceability according to brake pedal 90 to come each hydraulic pressure in the control brake cylinder 52,54,60,62 critically.Therefore, four brake cylinders are communicated with two pressure sources (being master cylinder 80 and hydraulic booster 78).In pattern H, do not have electric current to be fed to each coil of all Electromagnetically-operating control cock, thereby can reduce expenditure of energy.
In pattern I, be communicated with master cylinder 80 corresponding to the brake cylinder 52,54 of the near front wheel 10 and off front wheel 12, and be communicated with power pressure source 64 corresponding to the brake cylinder 60,62 of left rear wheel 56 and off hind wheel 58.
If corresponding to the back wheel hydraulic system generation oil liquid leakage of trailing wheel 56,58, then reduce by reservoir pressure sensor 300 detected pressure.Oil liquid leakage trace routine according to flowcharting shown in Figure 26 is carried out the oil liquid leakage detecting operation.At first, at step S199 place, braking ECU250 judges whether vehicle locates dead ship condition.Then, at step S200 place, braking ECU 250 judges whether pump motor 71 is static, promptly whether is in non-operating state.For example, if the hydraulic pressure in the reservoir 74 falls into the reference pressure scope, can judge that then pump motor 71 is in non-operating state.If make affirmative determination at step S200 place, control proceeds to step S201 and whether is not more than reference value Δ P with the absolute value of the variation delta Pref that judges target hydraulic Pref
SIf make affirmative determination at step S201 place, then control proceeds to step S202 to detect the hydraulic pressure in the reservoir 74, i.e. reservoir pressure P
AIs step S203 after the step S202, with in time control cycle in the past at the detected reservoir pressure P in step S202 place
A (n-1)Deduct in the current Control Circulation at the detected hydraulic pressure reservoir pressure P of step S202 place
A (n)If current reservoir pressure P
A (n)From reservoir pressure P last time
A (n-1)Reduce, and the difference Δ P of these force value
ABe not more than reference value Δ P
AS, then brake ECU 250 and make affirmative determination at step S204 place.Then, control proceeds to step S205 and to judge the back wheel hydraulic system corresponding to trailing wheel 56,58 oil liquid leakage has taken place.Back wheel hydraulic system comprises that brake cylinder 60,62, fluid passage 162,168,182,188,202,210 and pressure increase and pressure reduces control cock 172,178,192,198.But, can be from the leakage of kinetic pressure power path 10 0 and/or reservoir 74 detection fluid.Under one situation of back, can detect oil liquid leakage by the method that is different from said method.
But, can detect the generation of oil liquid leakage based on the serviceability of pump motor 71.For example, under the known in advance situation of the relation between the hydraulic oil output state of the serviceability of pump motor 71 and pump 70, can detect the generation of oil liquid leakage with respect to the variation of the output state of pump 70 based on reservoir pressure.
But, not necessarily require to be in and carry out the oil liquid leakage detecting operation under the state of dead ship condition at vehicle.That is to say, can under the state that vehicle is just travelling, carry out the oil liquid leakage detecting operation.
If brake pedal 90 is not operated, then make negative evaluation, and control proceeds to step S164 need to judge whether this hydraulic brake system of operation at step S152 place.For example, braking ECU250 judges corresponding in each sign of tractive force control, vehicle stability control, vehicle distances control and anticollision (or slowing down) control any one whether be set as the ON state.
If make affirmative determination at step S164 place, then control proceeds to step S165 to judge whether the sign corresponding to tractive force control is set as the ON state.If make affirmative determination at step S165 place, then control proceeds to step S166 with preference pattern I.The opposing party, if make negative evaluation at step S165 place, then control proceeds to step S167 with preference pattern F.
If do not need to operate this hydraulic brake system, then make negative evaluation, and control proceeds to step S168 to select wherein do not have electric current to be fed to the pattern H of each coil of Electromagnetically-operating control cock at step S164 place.
When the driving slippage of each drive wheel 56,58 surpasses reference value, start tractive force control, and the tractive force controlled flag is set as the ON state.Therefore, be controlled to make that corresponding to the hydraulic pressure in the brake cylinder 60,62 of drive wheel 56,58 each drive wheel can enter suitable driving sliding mode.In addition, when the moving velocity of vehicle surpasses reference velocity or when brake pedal 90 is operated, finish tractive force control, and the tractive force controlled flag is reset to the OFF state.
Trailing wheel 56,58 as drive wheel is subjected to tractive force control.So, under the state that brake cylinder 60,62 cuts off from brake cylinder 52,54, come each hydraulic pressure in the control brake cylinder 60,62 based on the hydraulic pressure in the power pressure source 64 by Linear Control valve device 230.Though the brake cylinder 52,54 corresponding to front- wheel 10,12 is communicated with master cylinder 80, does not have hydraulic pressure in master cylinder 80, thereby brake cylinder 52,54 is communicated with liquid storage tank 75.Therefore simultaneously,, then in master cylinder 80, produce hydraulic pressure, be supplied hydraulic pressure corresponding to the brake cylinder 52,54 of front- wheel 10,12 and hydraulic brake 55FL, 55FR are operated if brake pedal 90 is operated.Therefore, in pattern I, when brake pedal 90 was operated under tractive force control, this hydraulic brake system can prevent himself its operation of delay start.
But, when brake pedal 90 is operated under tractive force control, servo-unit can be communicated with control cock 222 and switches to its open mode from its closed condition.In the case, can be to brake cylinder 60,62 supplies and the corresponding hydraulic pressure of operating effort that is applied to brake pedal 90 corresponding to trailing wheel 56,58.
Vehicle stability control comprises spin restriction control and outside slip restriction control.When the spin trend of vehicle becomes too high, start spin restriction control increasing each hydraulic pressure in (increases of starting from scratch under some situation) such two brake cylinders, these two brake cylinders are corresponding to one outside in one of the outside in two front- wheels 10,12 that turning to and two trailing wheels 56,58 that also turning to.When the outside slip trend of vehicle becomes too high, start outside slip restriction control increasing each hydraulic pressure in such two brake cylinders, these two brake cylinders are corresponding in inboard one and two trailing wheels 56,58 that also turning in two front- wheels 10,12 that turning to inboard one.No matter whether brake pedal 90 is being operated each that can carry out in spin restriction control and the outside slip restriction control.
No matter whether brake pedal 90 is being operated each that can carry out in above-mentioned cruising control, anticollision (or slowing down) control and the parking aux. controls.
During in carrying out above-mentioned control any one, make negative evaluation at step S165 place, and brake ECU 250 at the preference pattern F of step S167 place.When each hydraulic pressure in four brake cylinders 52,54,60,62 was jointly controlled, four pressure increase control cock 172 to 178 to be opened, and four pressure reduce control cock 192 to 198 and close.On the other hand, when each hydraulic pressure in four brake cylinders 52,54,60,62 was individually controlled, 172 to 178 and four pressure of four pressure increase control cock reduced control cock 192 to 198 and are all individually opened and/or close.
If this hydraulic brake system mal is then made negative evaluation at step S151 place, and control proceeds to step S169 to judge that whether chaufeur is at operation brake pedal 90.If make affirmative determination at step S169 place, then control proceeds to step S170 judging whether et out of order of power system, and proceeds to step S171 subsequently to judge whether et out of order of control system.
At step S170 place, for example when not being higher than reference value by hydraulic accumulator pressure sensor 300 detected hydraulic pressure, perhaps when pump motor 71 during et out of order, braking ECU 250 judges power systems et out of order.
At step S171 place, for example when in Linear Control valve device 230 and the indivedual pressure control valve devices 218 at least one during et out of order, perhaps when electric system during et out of order, braking ECU 250 judgement control system are et out of order.In the initial inspection operation, check those faults.
When power system or control system during et out of order, finish energy recovery cooperation control or corresponding to the control of the current operation status of brake pedal 90.
If power system is et out of order, if promptly make affirmative determination at step S170 place, then control proceeds to the pattern J of step S172 to select all brake cylinders 52,54,60,62 wherein to be communicated with master cylinder 80.When power system during et out of order, hydraulic booster 78 can not be supplied high-voltage hydraulic oil, and therefore servo-unit 78 can not produce and be applied to the corresponding hydraulic pressure of operating effort of brake pedal 90.On the contrary, master cylinder 80 produces and the corresponding hydraulic pressure of operating effort that is applied to brake pedal 90.Therefore, all brake cylinders 52,54,60,62 are communicated with master cylinder 80.
For example, very low at the ground-surface coefficientoffriction that vehicle travelled, and therefore one or more (but non-all) in the wheel 10,12,56,58 enter under the situation of locking (locked) state, and remaining one or more wheel can be braked.For example, even front- wheel 10,12 may enter the locking state,, then still can overcome creep torque and the brake activation power that are applied to as the trailing wheel 56,58 of drive wheel if trailing wheel 56,58 is not in the locking state.Therefore, can reduce the amount of movement of vehicle.
When control system during et out of order, there is not electric current to be fed to each coil of all Electromagnetically-operating control cock.In the case, make affirmative determination at step S171 place, and control proceeds to step S173 with preference pattern H, in pattern H to corresponding to two brake cylinders 52,54 supply of the near front wheel 10 and off front wheel 12 hydraulic pressure, and to corresponding to all the other two brake cylinders, 60,62 supplies of left rear wheel 56 and off hind wheel 58 hydraulic pressure from hydraulic booster 78 from master cylinder 80.When power system just often, servo-unit 78 produces and the corresponding hydraulic pressure of operating effort that is applied to brake pedal 90.Therefore, the operational stroke of brake pedal 90 can be than medium and small at pattern J in pattern H.
As clearly visible from the above-mentioned explanation of second embodiment, servo-unit is communicated with control cock 222, cylinder and is communicated with control cock 224, pressure and increases storage among linear control valve 232, the braking ECU 250 and carry out by storage among the part of the model select program of the flowcharting of Figure 24 and the braking ECU 250 and carry out by the part of the control cock control program of Figure 25 flowcharting and cooperate each other to constitute pressure-source communication control device.
Pressure-source communication control device comprises: the servo-unit relevant with dead ship condition and/or the cylinder connected component that are made of the part of storage and execution in step S153, S162, S103 and S110 among the braking ECU 250; Constitute by the part of storage and execution in step S154, S160, S102 and S109 among the braking ECU 250 with the relevant servo-unit connected component of anti-lock control; And the power pressure source connected component that constitutes by the part of storage and execution in step S165, S166, S104 and S111 among the braking ECU 250 or with the relevant power pressure source connected component of tractive force control.
Pressure-source communication control device also comprises cylinder relevant with fault and/or the servo-unit connected component that the part by storage and execution in step S110, S112, S170 to 173 among the braking ECU 250 constitutes; And the servo-unit and the power pressure source connected component that constitute by the part of storage and execution in step S108, S155 and S159 among the braking ECU 250.
In addition, the part by storage and execution in step S163 among the braking ECU 250 constitutes cut-out equipment; And the part by the oil liquid leakage trace routine of braking the flowcharting of storing and carry out Figure 26 among the ECU 250 constitutes the oil liquid leakage test section.
In each of first and second embodiment, hydraulic booster 78 is connected to first part 202 that crosses, and master cylinder 80 is connected to second part 204 that crosses.But, master cylinder 80 can be connected to first part 202 that crosses, and hydraulic booster 78 is connected to second part 204 that crosses.
Be to be understood that the present invention can thinkable other changes and improvements implement with those skilled in the art, and can not deviate from the spirit and scope of the present invention that define in the claims.
The application is based on Japanese patent application No.2004-285963 that submitted on September 30th, 2004 and the Japanese patent application No.2005-262973 that submitted on September 9th, 2005, and its content is contained in this by reference.
Claims (35)
1. hydraulic brake system that uses in vehicle, described vehicle have a plurality of wheels and can be by the manual brake service member of operation of the chaufeur of described vehicle, and described device comprises:
The Manual pressure source, comprise (a) hydraulic booster, its corresponding first hydraulic pressure of operating effort after the operating effort that is applied to described brake service member by chaufeur provides power-assisted and generation and described power-assisted, (b) master cylinder, its produce with as corresponding second hydraulic pressure of operating effort after the described power-assisted of the output of described hydraulic booster;
Whether power pressure source, itself and chaufeur operate described brake service member irrespectively by utilizing power to produce the 3rd hydraulic pressure;
A plurality of hydraulic brakes, it is provided with explicitly with described a plurality of wheels respectively and comprises separately brake cylinder, and in described a plurality of hydraulic brake each when a corresponding sap pressure supply in described brake cylinder in described wheel corresponding one apply hydraulic braking force;
The part that crosses, it is connected in the described brake cylinder separately of described hydraulic brake each, and described hydraulic booster, described master cylinder and described power pressure source are connected to the described part that crosses with being connected in parallel to each other; With
Pressure-source communication control device, it optionally allows in described hydraulic booster, described master cylinder and the described power pressure source at least one to be communicated with the described part that crosses.
2. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises the servo-unit and the cylinder connected component of machinery, and described servo-unit and cylinder connected component mechanically divide described power pressure source and cut off and mechanically allow described hydraulic booster and the described master cylinder each to be communicated with the described part that crosses from described intersection.
3. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises servo-unit and/or cylinder connected component, when described hydraulic brake system during et out of order, described servo-unit and/or cylinder connected component divide to the described power pressure source of major general from described intersection and cut off and allow described hydraulic booster and the described master cylinder at least one to be communicated with the described part that crosses.
4. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises servo-unit relevant with fault and/or cylinder connected component, when the hydraulic pressure at least one in the described brake cylinder can not be automatically controlled, described servo-unit relevant with fault and/or cylinder connected component divided to the described power pressure source of major general from described intersection and cut off and allow described hydraulic booster and the described master cylinder at least one to be communicated with the described part that crosses.
5. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises servo-unit and/or the cylinder connected component that non-control is relevant, when each hydraulic pressure in the described brake cylinder not when automatically controlled, servo-unit that described non-control is relevant and/or cylinder connected component divide to the described power pressure source of major general from described intersection and cut off and allow described hydraulic booster and the described master cylinder at least one to be communicated with the described part that crosses.
6. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises servo-unit relevant with dead ship condition and/or cylinder connected component, when described vehicle was in dead ship condition, described servo-unit relevant with dead ship condition and/or cylinder connected component divided to the described power pressure source of major general from described intersection and cut off and allow described hydraulic booster and the described master cylinder at least one to be communicated with the described part that crosses.
7. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises the cylinder connected component relevant with fault, when described power pressure source failed to produce described the 3rd hydraulic pressure, the described cylinder connected component relevant with fault divided described hydraulic booster and described power pressure source and cuts off and allow described master cylinder to be communicated with the described part that crosses from described intersection.
8. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises cylinder and/or power pressure source connected component, when described hydraulic booster mechanical breakdown had taken place, described cylinder and/or power pressure source connected component divided to the described hydraulic booster of major general from described intersection and cut off and allow described master cylinder and the described power pressure source at least one to be communicated with the described part that crosses.
9. hydraulic brake system as claimed in claim 1 also comprises:
Communication facilities, it receives the information of sending from external device; With
Depend on the hydraulic-pressure control apparatus of information, described the 3rd hydraulic pressure that its described information that receives based on described communication facilities is produced by described power pressure source by utilization is controlled the hydraulic pressure in each described brake cylinder,
Wherein said pressure-source communication control device comprises servo-unit and/or power pressure source connected component, when described communication facilities failed normally to receive described information, described servo-unit and/or power pressure source connected component divided to the described master cylinder of major general from described intersection and cut off and allow described hydraulic booster and the described power pressure source at least one to be communicated with the described part that crosses.
10. hydraulic brake system as claimed in claim 1, wherein said vehicle has energy recovery brake equipment and energy recovery braking force control apparatus, described energy recovery brake equipment applies the energy recovery braking force owing to be connected to the energy recovery braking of the electrical motor of at least one drive wheel in the described wheel to described at least one drive wheel, described energy recovery braking force control apparatus control is applied to the energy recovery braking force of described at least one drive wheel
Wherein said hydraulic brake system also comprises:
Communication facilities, it receives the information that expression is applied to the actual energy recovery braking force of described at least one drive wheel from described energy recovery braking force control apparatus; With
Energy recovery cooperation control convenience, it reclaims braking force based on the represented described actual energy of the described information that is received by described communication facilities and controls corresponding to the hydraulic pressure at least one described brake cylinder of described at least one drive wheel, make to comprise that the described energy recovery braking force that is applied to described at least one drive wheel and the total braking force of described hydraulic braking force can equal and the corresponding braking force that requires of the current operation status of described brake service member, and
Wherein said pressure-source communication control device comprises servo-unit relevant with fault and/or power pressure source connected component, when described energy recovery braking force control apparatus during et out of order, described servo-unit relevant with fault and/or power pressure source connected component divide to the described master cylinder of major general from described intersection and cut off and allow described hydraulic booster and the described power pressure source at least one to be communicated with the described part that crosses.
11. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises servo-unit and power pressure source connected component, when just requiring the quick response of described hydraulic brake, described servo-unit and power pressure source connected component divide described master cylinder and cut off and allow described hydraulic booster and the described power pressure source each to be communicated with the described part that crosses from described intersection.
12. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises and the relevant servo-unit connected component of anti-lock control, when carrying out anti-lock control, the described servo-unit connected component relevant with anti-lock control divides described master cylinder and described power pressure source cut-out and allows described hydraulic booster to be communicated with the described part that crosses from described intersection.
13. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises the servo-unit connected component relevant with air detection, when detecting air, the described servo-unit connected component relevant with air detection divides described master cylinder and described power pressure source cut-out and allows described hydraulic booster to be communicated with the described part that crosses from described intersection.
14. hydraulic brake system as claimed in claim 1, wherein said pressure-source communication control device comprises and the relevant power pressure source connected component of tractive force control, when carrying out tractive force control, the power pressure source connected component permission following (a) that the control of described and tractive force is relevant and (b) in each be communicated with the described part that crosses: (a) at least one in described hydraulic booster and the described master cylinder, and (b) described power pressure source.
15. as each described hydraulic brake system in the claim 1 to 14, also comprise following (a), (b) at least one and (c): (a) detect the serviceability check implement of value of the serviceability of the described brake service member of expression, (b) cylinder pressure transducer of the value of described second hydraulic pressure of the described master cylinder generation of detection expression, (c) the kinetic pressure force gauge of the value of described the 3rd hydraulic pressure of the described power pressure source generation of detection expression, and wherein said pressure-source communication control device comprises fault detection part, and described fault detection part is based on by (a) described serviceability check implement, (b) described cylinder pressure transducer and (c) at least one the detected described value in the described kinetic pressure force gauge detect the fault of described hydraulic brake system.
16., also comprise as each described hydraulic brake system in the claim 1 to 14:
A plurality of indivedual pressure control valve devices, each control in described a plurality of indivedual pressure control valve devices and the hydraulic pressure in corresponding at least one the described brake cylinder of described each indivedual pressure control valve device; With
Brake cylinder is communicated with control convenience, and it optionally controls in described indivedual pressure control valve device at least one, is communicated with the described part that crosses with permission at least one described brake cylinder corresponding to described at least one indivedual pressure control valve device.
17. as each described hydraulic brake system in the claim 1 to 14, wherein said intersection branch comprise first cross partial sum second cross the part and separation device, described separation device is arranged on described first and crosses between described second intersection of partial sum divides, and described separation device optionally switches to wherein said separation device and allows described first partial sum described second first serviceability that part communicates with each other that crosses that crosses, and wherein said separation device is with described first partial sum described second second serviceability that part cuts off each other that crosses that crosses.
18. hydraulic brake system as claimed in claim 17, wherein said brake cylinder comprises the first cylinder group and the second cylinder group, the described first cylinder group comprise be connected to described first cross the part at least one first group of brake cylinder, the described second cylinder group comprise be connected to described second cross the part at least one second group of brake cylinder.
19. hydraulic brake system as claimed in claim 17, wherein two pressure sources in three pressure sources being made up of described hydraulic booster, described master cylinder and described power pressure source are connected to described first part that crosses, and another pressure source in described three pressure sources is connected to described second part that crosses.
20. hydraulic brake system as claimed in claim 17 also comprises:
A plurality of indivedual pressure control valve devices, each control in described a plurality of indivedual pressure control valve devices and the hydraulic pressure in corresponding at least one the described brake cylinder of described each indivedual pressure control valve device; With
Brake cylinder is communicated with control convenience, it is controlled described separation device and controls in described indivedual pressure control valve device at least one, with optionally allow corresponding at least one described brake cylinders of described at least one indivedual pressure control valve device and described hydraulic booster, described master cylinder and the described power pressure source described at least one be communicated with.
21. hydraulic brake system as claimed in claim 20, wherein said brake cylinder comprises the first cylinder group and the second cylinder group, the described first cylinder group comprise be connected to described first cross the part at least one first group of brake cylinder, the described second cylinder group comprise be connected to described second cross the part at least one second group of brake cylinder; Wherein two pressure sources in three pressure sources being made up of described hydraulic booster, described master cylinder and described power pressure source are connected to described first part that crosses, and another pressure source in described three pressure sources is connected to described second part that crosses; Wherein said pressure-source communication control device comprises single pressure-source communication part, and described single pressure-source communication is partly divided described two pressure sources and cut off and allow described another pressure source and described second part that crosses to be communicated with from described first intersection; And wherein said brake cylinder is communicated with control convenience and comprises the intersection connected component, described intersection connected component with described separation device switch to its described first serviceability with allow described first cross partial sum described second cross the part communicate with each other, and control is corresponding at least one described indivedual pressure control valve device of described at least one first group of brake cylinder, allowing described at least one first group of brake cylinder and described first part that crosses to be communicated with, and allow described at least one first group of brake cylinder thus and be connected to described second described another pressure-source communication that crosses part.
22. hydraulic brake system as claimed in claim 20, wherein said brake cylinder comprise first brake cylinder, second brake cylinder, the 3rd brake cylinder and the 4th brake cylinder of the near front wheel, off front wheel, left rear wheel and the off hind wheel that correspond respectively to described vehicle; Wherein said first brake cylinder and the 4th brake cylinder are connected to described first part that crosses, and described second brake cylinder and the 3rd brake cylinder are connected to described second part that crosses; Wherein said pressure-source communication control device comprises the cylinder connected component, and described cylinder connected component divides described hydraulic booster and described power pressure source cut-out and allows described master cylinder to be communicated with the described part that crosses from described intersection; And wherein said brake cylinder is communicated with control convenience and comprises left and right sides front wheel brake cylinder connected component, described left and right sides front wheel brake cylinder connected component with described separation device switch to its described first serviceability with allow described first cross partial sum second cross the part communicate with each other, and control described indivedual pressure control valve device so that described the 3rd brake cylinder and the 4th brake cylinder are divided and cut off from described second partial sum first intersection that crosses respectively, and allow described first brake cylinder and second brake cylinder to be communicated with described first partial sum second part that crosses that crosses respectively, thus described the 3rd brake cylinder and the 4th brake cylinder are cut off and allow described first brake cylinder and second brake cylinder to be communicated with described master cylinder from described master cylinder.
23. hydraulic brake system as claimed in claim 17, wherein said master cylinder be connected to described first cross partial sum second cross the part in one, and described hydraulic booster be connected to described first cross partial sum second cross the part in another.
24. hydraulic brake system as claimed in claim 17, wherein said hydraulic booster and described power pressure source are connected to described first part that crosses, and described master cylinder is connected to described second part that crosses.
25. hydraulic brake system as claimed in claim 17, wherein said brake cylinder comprise four brake cylinders being made up of first brake cylinder of the near front wheel that corresponds respectively to described vehicle, off front wheel, left rear wheel and off hind wheel, second brake cylinder, the 3rd brake cylinder and the 4th brake cylinder; Wherein said first brake cylinder and second brake cylinder are connected to described first cross in the part one of partial sum second that crosses, and described the 3rd brake cylinder and the 4th brake cylinder are connected to described first cross in the part another of partial sum second that cross; Wherein said pressure-source communication control device comprises cylinder and power pressure source connected component, described cylinder and power pressure source connected component allow described master cylinder and described power pressure source to cross with described first partial sum second that crosses that a different part is communicated with in the part respectively, and wherein said hydraulic brake system also comprises:
Cut-out equipment, it controls to its described second serviceability so that described first partial sum second part that crosses that crosses is cut off each other with described separation device;
The kinetic pressure force gauge, it detects the value of expression by described the 3rd hydraulic pressure of described power pressure source generation; With
The oil liquid leakage test section, it detects hydraulic oil whether from being connected at least one hydraulic system leakage with described two brake cylinders of described power pressure source bonded assembly based on the detected described value of described kinetic pressure force gauge.
26. hydraulic brake system as claimed in claim 17, wherein said brake cylinder comprises two drive wheel brake cylinders of two drive wheels that correspond respectively to described vehicle and two non-driving wheel brake cylinders that correspond respectively to two non-driving wheels of described vehicle, wherein said drive wheel brake cylinder is connected to described first and crosses part and described non-driving wheel brake cylinder is connected to described second part that crosses, wherein said pressure-source communication control device comprises cylinder and the power pressure source connected component relevant with tractive force control, and described and tractive force are controlled relevant cylinder and power pressure source connected component and allowed described power pressure source and described first part that crosses to be communicated with and to allow described master cylinder and described second part that crosses to be communicated with when carrying out tractive force control.
27. hydraulic brake system as claimed in claim 17, wherein said intersection subpackage oil scraper liquid passage, described hydraulic booster, described master cylinder and described power pressure source are connected to described fluid passage, and described fluid passage is connected to described brake cylinder, and wherein said separation device is arranged in the described fluid passage and described fluid passage is separated into two parts as described first partial sum second part that crosses that crosses.
28. hydraulic brake system as claimed in claim 18, wherein said brake cylinder comprises first brake cylinder, second brake cylinder, the 3rd brake cylinder and the 4th brake cylinder of the near front wheel, off front wheel, left rear wheel and the off hind wheel that correspond respectively to described vehicle, one in the wherein said first cylinder group and the second cylinder group comprises described first brake cylinder and the 4th brake cylinder, and in the described first cylinder group and the second cylinder group another comprises described second brake cylinder and the 3rd brake cylinder.
29. hydraulic brake system as claimed in claim 18, wherein said brake cylinder comprises first brake cylinder, second brake cylinder, the 3rd brake cylinder and the 4th brake cylinder of the near front wheel, off front wheel, left rear wheel and the off hind wheel that correspond respectively to described vehicle, one in the wherein said first cylinder group and the second cylinder group comprises described first brake cylinder and second brake cylinder, and in the described first cylinder group and the second cylinder group another comprises described the 3rd brake cylinder and the 4th brake cylinder.
30., also comprise as each described hydraulic brake system in the claim 1 to 14:
A plurality of indivedual pressure control valve devices, in described a plurality of indivedual pressure control valve devices each comprises that being arranged on the described partial sum that crosses increases control cock corresponding to the pressure between at least one described brake cylinder of described each indivedual pressure control valve device, and comprise that the pressure between the liquid storage tank that is arranged on described at least one brake cylinder and savings hydraulic oil reduces control cock, and the hydraulic pressure of each control in described at least one brake cylinder in described a plurality of indivedual pressure control valve devices, and each pressure of wherein said indivedual pressure control valve devices increase in valve each comprise Electromagnetically-operating control cock open in usual.
31., also comprise as each described hydraulic brake system in the claim 1 to 14:
A plurality of indivedual pressure control valve devices, each control in described a plurality of indivedual pressure control valve devices is corresponding to the hydraulic pressure at least one described brake cylinder of described each indivedual pressure control valve device; With
Control the hydraulic-pressure control apparatus of indivedual pressure control valve devices, described each the indivedual pressure control valve device of its control make the hydraulic pressure in described at least one brake cylinder can take the value corresponding to the present situation of described vehicle.
32. as each described hydraulic brake system in the claim 1 to 14, wherein said power pressure source comprises the delivery pressure control convenience, described delivery pressure control convenience control is as described the 3rd hydraulic pressure of the output hydraulic pressure of described power pressure source, and wherein said hydraulic brake system also comprises delivery pressure control convenience control part, and described delivery pressure control convenience control part is controlled described delivery pressure control convenience makes hydraulic pressure at least one described brake cylinder can take the value corresponding to the present situation of described vehicle.
33. as each described hydraulic brake system in the claim 1 to 14, wherein said vehicle has energy recovery brake equipment and energy recovery braking force control apparatus, described energy recovery brake equipment applies the energy recovery braking force owing to be connected to the energy recovery braking of the electrical motor of at least one drive wheel in the described wheel to described at least one drive wheel, described energy recovery braking force control apparatus control is applied to the described energy recovery braking force of described at least one drive wheel
Wherein said hydraulic brake system also comprises:
Communication facilities, it receives the information that expression is applied to the actual energy recovery braking force of described at least one drive wheel from described energy recovery braking force control apparatus; With
Energy recovery cooperation control convenience, it reclaims braking force based on the represented described actual energy of the described information that is received by described communication facilities and controls corresponding to the hydraulic pressure at least one described brake cylinder of described at least one drive wheel, makes to comprise that the described energy recovery braking force that is applied to described at least one drive wheel and the total braking force of described hydraulic braking force can equal and the corresponding braking force that requires of the current operation status of described brake service member.
34. hydraulic brake system as claimed in claim 20, wherein said pressure-source communication control device comprises power pressure source connected component, described power pressure source connected component divides described hydraulic booster and described master cylinder cut-out and allows described power pressure source to be communicated with the described part that crosses from described intersection, and wherein said brake cylinder is communicated with control convenience and comprises each brake cylinder connected component, described each brake cylinder connected component switches to its described first serviceability with described separation device and communicates with each other to allow described first partial sum second part that crosses that crosses, and controls described indivedual pressure control valve device and be communicated with the described part that crosses to allow each described brake cylinder.
35. as each described hydraulic brake system in the claim 1 to 14, wherein said power pressure source with described the 3rd fluid control is and the corresponding value of the present situation of described vehicle.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004285963 | 2004-09-30 | ||
| JP2004285963 | 2004-09-30 | ||
| JP2005262973 | 2005-09-09 |
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| CN1757551A true CN1757551A (en) | 2006-04-12 |
| CN100404339C CN100404339C (en) | 2008-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101058636A Active CN100404339C (en) | 2004-09-30 | 2005-09-29 | Hydraulic brake apparatus |
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| CN101987616A (en) * | 2009-07-29 | 2011-03-23 | 株式会社万都 | Electro-hydraulic brake system |
| CN101767579B (en) * | 2008-12-12 | 2011-07-20 | 宁波安捷制动器有限公司 | Hydraulic power-assisted brake device |
| CN102596664A (en) * | 2009-10-28 | 2012-07-18 | 丰田自动车株式会社 | Brake control device |
| CN102862560A (en) * | 2011-07-08 | 2013-01-09 | 现代自动车株式会社 | Regenerative braking system for vehicle |
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| CN103661344A (en) * | 2012-09-21 | 2014-03-26 | 罗伯特·博世有限公司 | Control device for a brake system of a vehicle, and method for operating a brake system of a vehicle |
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| DE3813172C2 (en) * | 1988-04-20 | 1998-02-12 | Teves Gmbh Alfred | Anti-lock hydraulic brake system |
| CA2267203C (en) * | 1996-09-26 | 2002-08-06 | Toyota Jidosha Kabushiki Kaisha | Braking device |
| JP3458695B2 (en) * | 1997-03-14 | 2003-10-20 | トヨタ自動車株式会社 | Vehicle hydraulic brake system |
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| CN104768817B (en) * | 2012-10-30 | 2017-03-15 | 丰田自动车株式会社 | The brake control of vehicle |
| CN107054330A (en) * | 2016-11-25 | 2017-08-18 | 浙江亚太机电股份有限公司 | A kind of Linear Control brakes and control method with energy regenerating |
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