CN106347335A - Assistance system for vehicle - Google Patents
Assistance system for vehicle Download PDFInfo
- Publication number
- CN106347335A CN106347335A CN201610887463.3A CN201610887463A CN106347335A CN 106347335 A CN106347335 A CN 106347335A CN 201610887463 A CN201610887463 A CN 201610887463A CN 106347335 A CN106347335 A CN 106347335A
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- CN
- China
- Prior art keywords
- vehicle
- assembly
- brake
- brake boost
- control valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/147—In combination with distributor valve
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/14—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using accumulators or reservoirs fed by pumps
- B60T13/142—Systems with master cylinder
- B60T13/145—Master cylinder integrated or hydraulically coupled with booster
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/66—Electrical control in fluid-pressure brake systems
- B60T13/70—Electrical control in fluid-pressure brake systems by fluid-controlled switches
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/065—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle characterised by specially adapted means for varying pressurised fluid supply based on need, e.g. on-demand, variable assist
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62D—MOTOR VEHICLES; TRAILERS
- B62D5/00—Power-assisted or power-driven steering
- B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle
- B62D5/07—Supply of pressurised fluid for steering also supplying other consumers ; control thereof
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention provides an assistance system for a vehicle and relates to an assistance system. The assistance system comprises a brake assistance assembly, a steering assistance assembly and an electric pump, wherein the brake assistance assembly is used for assisting a driver to control vehicle brake, mainly formed by corresponding hydraulic transmission control assemblies and connected with a vehicle brake control unit; the steering assistance assembly is used for assisting the driver to control vehicle steering, mainly formed by corresponding hydraulic transmission control assemblies and integrated in the assistance system together with the brake assistance assembly; the electric pump is used for driving the brake assistance assembly or the steering assistance assembly to assist the driver to control vehicle steering or brake. Due to the facts that the brake assistance assembly and the steering assistance assembly are integrated together and the electric pump is used to provide power, the cost of the assistance system is reduced compared with the prior art, dynamic performances of the whole vehicle is controlled conveniently, and thus the operation stability of the whole vehicle is improved.
Description
Technical field
The present invention relates to a kind of force aid system, more particularly to a kind of force aid system for vehicle.
Background technology
Electro-motive vehicle or electric drive are referred to the motor vehicle driven by mixed power of other power phase combination drives with vehicle power
For power, or the vehicle that vehicle power is combined with other driving means or is independently driven, such as electric drive and oil
Gas drive moves the motor vehicle driven by mixed power mutually mixing.Because the relatively conventional automobile of effect on environment is less, therefore quickly extensively applied.
Force aid system for vehicle mainly assists driver's operating and controlling vehicle, mitigates the intensity of driver's operating and controlling vehicle, has
Effect ensures the accuracy of driver's operating and controlling vehicle, thus traffic safety is effectively ensured.For example, force aid system for braking is driven for assistance
The person of sailing suitably is braked to the automobile that it is driven, and mitigate that driver tramples brake pedal uses force intensity.Steering boost system
To assist driver to make automobile steering adjustment, be driver mitigate beat steering wheel use force intensity.So, vehicle booster system is
Important ingredient in modern vehicle control system.
The power steering of existing electric automobile and brake boost are usually two systems, and each system is by single ecu
Control, be unfavorable for integrated control, be less useful for handling stability energy and the high cost of car load.
Content of the invention
It is an object of the present invention to providing a kind of force aid system for vehicle, driven with solving electricity of the prior art
Motor-car or electric drive are filled with power steering with the brake booster of the motor vehicle driven by mixed power of other power phase combination drives
Put and there is high cost.
The present invention one further objective is that electro-motive vehicle to be improved or electric drive and other power phase combined drives
The handling stability energy of dynamic motor vehicle driven by mixed power.
The present invention another further objective is that and will reduce freight carrying type electro-motive vehicle or electric drive and other power
The cost of the force aid system of the motor vehicle driven by mixed power of phase combination drive, the cost of the force aid system of especially greater than 7 tons of vehicle.
Especially, the invention provides a kind of force aid system for vehicle, wherein, described vehicle be electro-motive vehicle or
The motor vehicle driven by mixed power of person's electric drive and other power phase combination drives, described force aid system includes:
Brake boost assembly, for assisting driver to control described vehicle braking, it is mainly by corresponding hydraulic drive control
Assembly processed is constituted, and is connected with the brak control unit of described vehicle；
Power steering assembly, for assisting driver to control described Vehicular turn, it is mainly by corresponding hydraulic drive control
Assembly processed is constituted, and is integrated in described force aid system with described brake boost assembly；And
Electrodynamic pump, for driving described brake boost assembly or described power steering assembly auxiliary driver to control described car
Turn to or brake.
Further, described force aid system also includes:
Accumulator, for maintaining the specified pressure value of described brake boost assembly and described power steering assembly, itself and institute
State brake boost assembly and described power steering assembly is connected；
Described electrodynamic pump is the electrodynamic pump of output hydraulic oil, and described electrodynamic pump is helped with described accumulator, described braking simultaneously
Power assembly and described power steering assembly are connected；
Alternatively, the interconnecting part between described electrodynamic pump and described accumulator is provided with check valve, and described check valve makes institute
State brake boost assembly and described power steering assembly keeps described specified pressure value；
Alternatively, install at described accumulator and the interconnecting part of described brake boost assembly and described power steering assembly
There is first pressure sensor, described first pressure sensor is used for detecting whether described accumulator maintains described brake boost assembly
And described power steering assembly is to described specified pressure value, if being less than described specified pressure value, described electric priming pump, so that
Obtain the pressure value that described brake boost assembly and the maintenance of described power steering assembly are specified.
Further, described power steering assembly includes:
Steering gear, for assisting driver to turn to described vehicle, described accumulator is connected with described steering gear, described turn
It is divided into two lines road to be connected with the fuel tank of described system respectively to device；
First control valve, for controlling described steering gear to start or stop, it is installed on described accumulator and described steering
At the interconnecting part of device；
Second control valve, for driving described steering gear auxiliary driver to turn to described vehicle side, it is installed on institute
State in the described two lines road that steering gear is connected with the fuel tank of described system；
3rd control valve, for driving described steering gear auxiliary driver to turn to described vehicle opposite side, it is installed on
In the described two lines road that described steering gear is connected with the fuel tank of described system another；
Alternatively, described steering gear is housing structure, has piston, the steering system of described piston and described vehicle inside it
System is corresponding to be connected, and described accumulator is connected with the oil inlet end of the described piston both sides of described steering gear simultaneously, described two lines
Road is connected with the oil outlet end of the described piston both sides of described steering gear respectively.
Further, the ecu of described vehicle can control the described first to the 3rd control valve according to the speed of described vehicle
Corresponding opening/closing time, make described vehicle turn to and the rotation of the steering wheel of described vehicle is consistent.
Further, described brake boost assembly includes:
Master cylinder, the brak control unit for controlling described vehicle is braked, and it has brake boost chamber, described
Brake boost chamber is connected with the fuel tank of described accumulator and described system, and the connecting rod of the brake pedal of described vehicle stretches into
It is connected in described brake boost chamber and with described master cylinder；
4th control valve, for controlling the size of the brake boost of vehicle described in auxiliary operator brake, it is installed on institute
State at brake boost chamber and the interconnecting part of described accumulator；
5th control valve, for controlling the size of described brake boost, it is installed on described brake boost chamber and described system
The interconnecting part of the fuel tank of system.Further,
Described brake boost assembly also includes
Displacement transducer, for detect described vehicle brake pedal trampled displacement, be then forwarded to described car
Ecu；
The ecu of described vehicle is trampled displacement according to described, and the pedal force calculating driver is stepped on trampling described brake
The acceleration of plate, then draws required brake boost value, and then the ecu of described vehicle controls institute according to described brake boost value
State the 4th control valve and described 5th control valve, make brake force that the brakes of described vehicle exports and described brake pedal
Trampled displacement to be consistent.
Further,
Described first is electromagnetic valve device to described 5th control valve, and the ecu of described vehicle is by Linear Control mode
Control described first to described 5th control valve；
Alternatively, described first it is normally closed type control valve to described 5th control valve.
Further,
At described first control valve and the interconnecting part of described steering gear, the 3rd pressure transducer is installed, for detection by institute
State accumulator and be delivered to the pressure of described steering gear and whether reach described specified pressure value.
Further, second pressure is installed at the interconnecting part between described 4th control valve and described brake boost chamber pass
Whether sensor, reach described specified pressure value for detection by the pressure that described accumulator is delivered to described brake boost chamber.
The described force aid system of the present invention, due to being integrated in one by described brake boost assembly and described power steering assembly
Rise, and provide power using described electrodynamic pump, therefore reduce the cost of force aid system with respect to prior art, and simultaneously facilitate
The dynamic performance of car load is controlled, thus improve the handling stability energy of car load.
Further, the described force aid system of the present invention, because described brake boost assembly can be defeated by described electrodynamic pump
Go out hydraulic oil, therefore described brake boost assembly can provide big assist rate, so that more than 7 tons of driven light truck can
To adopt hydraulic booster system, adopting air-pressure brake the electric truck more than 7 tons in hinge structure, its parts is many more,
Weight is big, and the shortcoming of high cost, thus reduce the cost of the force aid system of freight carrying type electric vehicle.Meanwhile, there is hydraulic oil
Hydraulic pressure drive control system assembly there is corresponding actions rapid sensitive.Described force aid system therefore can be improved further
Execution accuracy.
Further, the described force aid system of the present invention, decreases described power steering assembly with respect to prior art
Complexity, so as to structure is simple, create a further reduction the cost of described force aid system.Only need to three control valves and one
Steering gear just can perform power steering action, consequently facilitating assembling and follow-up maintenance maintenance.
According to the detailed description to the specific embodiment of the invention below in conjunction with accompanying drawing, those skilled in the art will be brighter
The above-mentioned and other purposes of the present invention, advantages and features.
Brief description
Describe some specific embodiments of the present invention hereinafter with reference to the accompanying drawings by way of example, and not by way of limitation in detail.
In accompanying drawing, identical reference denotes same or similar part or part.It should be appreciated by those skilled in the art that these
Accompanying drawing is not necessarily drawn to scale.In accompanying drawing:
Fig. 1 is the hydraulic circuit diagram of described force aid system according to an embodiment of the invention.
Specific embodiment
Illustrate in conjunction with Fig. 1, the described force aid system for vehicle may include that brake boost assembly, power steering
Assembly and electrodynamic pump 1.
Described brake boost assembly is used for assisting driver to control described Vehicular turn, and it is mainly by corresponding hydraulic drive
Control assembly is constituted, and is connected with the brak control unit 13 of described vehicle.Described power steering assembly is used for assisting driver
Control described vehicle braking, it is mainly made up of corresponding hydraulic pressure drive control system assembly, and integrated with described brake boost assembly
In described force aid system.Described electrodynamic pump 1 is used for driving described brake boost assembly or described power steering assembly auxiliary to drive
The person of sailing controls described Vehicular turn or braking.
Wherein, described vehicle is the hybrid electric vehicle of electro-motive vehicle or electric drive and other power phase combination drives
?.
Together with described brake boost assembly is integrated in described power steering assembly, and use described electrodynamic pump 1
Power is provided, therefore reduces the cost of force aid system with respect to prior art, and simultaneously facilitate the dynamic performance to car load
It is controlled, thus improve the handling stability energy of car load.
Illustrate continuing with Fig. 1, further, described force aid system can also include accumulator 2.Described accumulator
2 are used for maintaining described brake boost assembly and the specified pressure value of described power steering assembly, and it is with described brake boost assembly
And described power steering assembly is connected.Described electrodynamic pump 1 be output hydraulic oil electrodynamic pump 1, described electrodynamic pump 1 simultaneously with
Described accumulator 2, described brake boost assembly and described power steering assembly are connected.
Alternatively, the interconnecting part between described electrodynamic pump 1 and described accumulator 2 is provided with check valve 14, described check valve
14 make described brake boost assembly and described power steering assembly keep described specified pressure value.
Alternatively, described accumulator 2 and the interconnecting part of described brake boost assembly and described power steering assembly are installed
There is first pressure sensor 15, described first pressure sensor 15 is used for detecting whether described accumulator 2 maintains described braking to help
Power assembly and described power steering assembly are to described specified pressure value, if being less than described specified pressure value, described electrodynamic pump 1 opens
Dynamic, so that the pressure value that described brake boost assembly and the maintenance of described power steering assembly are specified.
Because described brake boost assembly can export hydraulic oil by described electrodynamic pump 1, therefore described brake boost assembly
Big assist rate can be provided, so that more than 7 tons of driven light truck can adopt hydraulic booster system, relatively existing skill
Adopting air-pressure brake the electric truck being more than 7 tons in art, its parts is many, weight is big, and the shortcoming of high cost, thus reduce more
The cost of the force aid system of freight carrying type electric vehicle.Meanwhile, the hydraulic pressure drive control system assembly with hydraulic oil has corresponding actions
The feature of rapid sensitive.The execution accuracy of described force aid system therefore can be improved further.
Described braking can be effectively maintained to help within a certain period of time in addition, described accumulator 2 and check valve 14 are used in combination
High hydraulic pressure in power assembly and described power steering assembly, thus reducing the use of described electrodynamic pump 1, extends described electronic
The service life of pump 1.
Illustrate continuing with Fig. 1, further, described power steering assembly can include steering gear 6, first and control
Valve 5, the second control valve 3 and the 3rd control valve 4.
Described steering gear 6 is used for assisting driver to turn to described vehicle, and described accumulator 2 is connected with described steering gear 6,
Described steering gear 6 is divided into two lines road to be connected with the fuel tank 16 of described system respectively.Described first control valve 5 is used for controlling institute
State steering gear 6 to start or stop, it is installed on the interconnecting part of described accumulator 2 and described steering gear 6.Described second control valve 3
For driving described steering gear 6 auxiliary driver to turn to described vehicle side, it is installed on described steering gear 6 and described system
The described two lines road that is connected of fuel tank 16 in one.Described 3rd control valve 4 is used for driving described steering gear 6 auxiliary to drive
The person of sailing turns to described vehicle opposite side, and it is installed on described two that described steering gear 6 is connected with the fuel tank 16 of described system
In bar circuit another.
Alternatively, described steering gear 6 is housing structure, has piston, the steering of described piston and described vehicle inside it
System is corresponding to be connected, and described accumulator 2 is connected with the oil inlet end of the described piston both sides of described steering gear 6 simultaneously, and described two
Bar circuit is connected with the oil outlet end of the described piston both sides of described steering gear 6 respectively.
It is arranged such, with respect to prior art, decrease the complexity of described power steering assembly so as to structure is simple
Single, create a further reduction the cost of described force aid system.Only need to three control valves and just can perform steering with a steering gear
Power-assisted action, consequently facilitating assembling and follow-up maintenance maintenance.
Illustrate continuing with Fig. 1, further, the ecu of described vehicle can control according to the speed of described vehicle
The corresponding opening/closing time of the described first to the 3rd control valve 5,3,4, makes turning to and the steering wheel of described vehicle of described vehicle
Rotation is consistent.
The full name of the ecu of described vehicle is electronic control unit, refers to car running computer.
It is arranged such, the execution accuracy of force aid system can be effectively ensured.
Illustrate continuing with Fig. 1, further, described brake boost assembly can include master cylinder the 12, the 4th
Control valve 7 and the 5th control valve 8.
Described master cylinder 12 is used for controlling the brak control unit 13 of described vehicle to be braked, and it has brake boost
Chamber 9, described brake boost chamber 9 is connected with the fuel tank 16 of described accumulator 2 and described system, the brake pedal of described vehicle
10 connecting rod is stretched in described brake boost chamber 9 and is connected with described master cylinder 12.Described 4th control valve is used for controlling
The size of the brake boost of vehicle described in system auxiliary operator brake, it is installed on described brake boost chamber and described accumulator
At interconnecting part.Described 5th control valve is used for controlling the size of described brake boost, and it is installed on described brake boost chamber and institute
State the interconnecting part of the fuel tank of system.
It should be noted that described 4th control valve 7 is that driver tramples with the control process of described 5th control valve 8
When the brake pedal 10 of described vehicle is braked, described 4th control valve 7 is opened, and described 5th control valve 8 is closed, and makes high pressure
Oil enters in described brake boost chamber 9 and is pressurized.When reaching power-assisted value, described 4th control valve 7 is closed, described 5th control
Valve 8 processed remains off.When driver stops braking described vehicle, the return spring of described master cylinder 12 makes described vehicle
Brake pedal 10, simultaneously described 4th control valve 7 close, described 5th control valve 8 is opened, in described brake boost chamber 9
Hydraulic oil is back to described fuel tank 16.
It is arranged such, with respect to prior art, decrease the complexity of described brake boost assembly so as to structure is simple
List is it is only necessary to two control valves just can perform brake boost action with a master cylinder, consequently facilitating assembling and follow-up maintenance
Maintenance.
Illustrate continuing with Fig. 1, further, described brake boost assembly can also include displacement transducer 11,
It is used for detecting the ecu being trampled displacement, being then forwarded to described vehicle of the brake pedal 10 of described vehicle.
The ecu of described vehicle is trampled displacement according to described, and the pedal force calculating driver is stepped on trampling described brake
The acceleration of plate 10, then draws required brake boost value, and then the ecu of described vehicle controls according to described brake boost value
Described 4th control valve 7 and described 5th control valve 8, make the brake force that the brakes of described vehicle exports step on described brake
The displacement of being trampled of plate 10 is consistent.
With respect to brake boost assembly described in prior art with described power steering assembly respectively using an ecu, this
The described brake boost assembly of application is controlled by the ecu of described vehicle with described power steering assembly, is only entered using an ecu
Row controls, thus further reducing the cost of described force aid system.
Illustrate continuing with Fig. 1, further,
Described first control valve 5 to described 5th control valve 8 is electromagnetic valve device, and the ecu of described vehicle passes through linearly
Control mode controls described first control valve 5 to described 5th control valve 8；
Alternatively, described control valve is that described first control valve 5 is normally closed type control valve to described 5th control valve 8.
It is arranged such, electromagnetic valve device can achieve Linear Control, power steering assembly be can achieve to change with speed and help
Power ratio；Brake force decoupling can be realized for brake boost assembly, make while stopping power feedback, to keep identical braking defeated
Exert oneself；It is easy to the realization of different control strategies.It is easy to the realization of the different braking energy regenerating strategy of electric vehicle.Steering is made to help
Power and the response quickly of brake boost.
Described control valve is that described first control valve 5 is normally closed type control valve to described 5th control valve 8, to ensure car
It is closed under non-steering state it is ensured that controlling stable.Using normally closed solenoid valve, under non-power-assisted state, make institute
State power-assisted assembly to be closed, thus reduce electrodynamic pump 1 using flat rate, thus extending its life-span.In non-power-assisted state
Under, so that force aid system is closed, save the energy of vehicle.
Illustrate continuing with Fig. 1, further,
Described first control valve 5 is provided with the 3rd pressure transducer 17 with the interconnecting part of described steering gear 6, for detection by
Whether the pressure that described accumulator 2 is delivered to described steering gear 6 reaches described specified pressure value.
Illustrate continuing with Fig. 1, further, company between described 4th control valve 7 and described brake boost chamber 9
Logical portion is provided with second pressure sensor 18, for detection by the pressure that described accumulator 2 is delivered to described brake boost chamber 9 is
No reach described specified pressure value.
First pressure sensor 15 to the 3rd pressure transducer 17 can accurately and force aid system described in implementing monitoring,
Thus ensureing this system run all right, accurate, safe and reliable.
It should be noted that described vehicle adjusts the braking of each wheel 20 of described vehicle by brak control unit 13
Power, realizes the related control strategy of various brakings.And in the process phase is carried out by corresponding 4th pressure transducer 19
The detection answered.
So far, although those skilled in the art will appreciate that detailed herein illustrate and describe the multiple of the present invention and show
Example property embodiment, but, without departing from the spirit and scope of the present invention, still can be direct according to present disclosure
Determine or derive other variations or modifications of many meeting the principle of the invention.Therefore, the scope of the present invention is it is understood that and recognize
It is set to and cover other variations or modifications all these.
Claims (9)
1. a kind of force aid system for vehicle, wherein, described vehicle is electro-motive vehicle or electric drive and other power phases
The motor vehicle driven by mixed power of combination drive, described force aid system includes:
Brake boost assembly, for assisting driver to control described vehicle braking, it is mainly by corresponding hydraulic pressure drive control system group
Part is constituted, and is connected with the brak control unit of described vehicle；
Power steering assembly, for assisting driver to control described Vehicular turn, it is mainly by corresponding hydraulic pressure drive control system group
Part is constituted, and is integrated in described force aid system with described brake boost assembly；And
Electrodynamic pump, for driving described brake boost assembly or described power steering assembly auxiliary driver to control described vehicle to turn
To or braking.
2. force aid system according to claim 1 is it is characterised in that described force aid system also includes:
Accumulator, for maintaining the specified pressure value of described brake boost assembly and described power steering assembly, it is with described system
Dynamic power-assisted assembly and described power steering assembly are connected；
Described electrodynamic pump be output hydraulic oil electrodynamic pump, described electrodynamic pump simultaneously with described accumulator, described brake boost group
Part and described power steering assembly are connected；
Alternatively, the interconnecting part between described electrodynamic pump and described accumulator is provided with check valve, and described check valve makes described system
Dynamic power-assisted assembly and described power steering assembly keep described specified pressure value；
Alternatively, it is provided with the at the interconnecting part of described accumulator and described brake boost assembly and described power steering assembly
One pressure transducer, described first pressure sensor is used for detecting whether described accumulator maintains described brake boost assembly and institute
State power steering assembly to described specified pressure value, if being less than described specified pressure value, described electric priming pump, so that institute
State the pressure value that brake boost assembly and the maintenance of described power steering assembly are specified.
3. force aid system according to claim 1 and 2 is it is characterised in that described power steering assembly includes:
Steering gear, for assisting driver to turn to described vehicle, described accumulator is connected with described steering gear, described steering gear
It is divided into two lines road to be connected with the fuel tank of described system respectively；
First control valve, for controlling described steering gear to start or stop, it is installed on described accumulator and described steering gear
At interconnecting part；
Second control valve, for driving described steering gear auxiliary driver to turn to described vehicle side, it is installed on described turning
In the described two lines road being connected with the fuel tank of described system to device one；
3rd control valve, for driving described steering gear auxiliary driver to turn to described vehicle opposite side, it is installed on described
In the described two lines road that steering gear is connected with the fuel tank of described system another；
Alternatively, described steering gear is housing structure, has piston, the steering pair of described piston and described vehicle inside it
Should connect, described accumulator is connected with the oil inlet end of the described piston both sides of described steering gear simultaneously, and described two lines road is divided
It is not connected with the oil outlet end of the described piston both sides of described steering gear.
4. force aid system according to claim 3 is it is characterised in that the ecu of described vehicle can be according to described vehicle
Speed, controls the corresponding opening/closing time of the described first to the 3rd control valve, makes the direction turning to described vehicle of described vehicle
The rotation of disk is consistent.
5. force aid system according to claim 3 is it is characterised in that described brake boost assembly includes:
Master cylinder, the brak control unit for controlling described vehicle is braked, and it has brake boost chamber, described braking
Power-assisted chamber is connected with the fuel tank of described accumulator and described system, and the connecting rod of the brake pedal of described vehicle stretches into described
It is connected in brake boost chamber and with described master cylinder；
4th control valve, for controlling the size of the brake boost of vehicle described in auxiliary operator brake, it is installed on described system
At the interconnecting part of dynamic power-assisted chamber and described accumulator；
5th control valve, for controlling the size of described brake boost, it is installed on described brake boost chamber and described system
The interconnecting part of fuel tank.
6. force aid system according to claim 5 it is characterised in that
Described brake boost assembly also includes
Displacement transducer, for detect described vehicle brake pedal trampled displacement, be then forwarded to described vehicle
ecu；
The ecu of described vehicle is trampled displacement according to described, calculates the pedal force of driver and tramples described brake pedal
Acceleration, then draws required brake boost value, and then the ecu of described vehicle controls described the according to described brake boost value
Four control valves and described 5th control valve, make the brake force that the brakes of described vehicle exports be stepped on described brake pedal
Step on displacement to be consistent.
7. force aid system according to claim 6 it is characterised in that
Described first is electromagnetic valve device to described 5th control valve, and the ecu of described vehicle is controlled by Linear Control mode
Described first to described 5th control valve；
Alternatively, described first it is normally closed type control valve to described 5th control valve.
8. the force aid system according to any one of claim 3 to 7 it is characterised in that
At described first control valve and the interconnecting part of described steering gear, the 3rd pressure transducer is installed, for detection by described storage
Whether the pressure that energy device is delivered to described steering gear reaches described specified pressure value.
9. the force aid system according to any one of claim 5 to 8 it is characterised in that described 4th control valve with described
Second pressure sensor is installed at the interconnecting part between brake boost chamber, for detection, described system is delivered to by described accumulator
Whether the pressure in dynamic power-assisted chamber reaches described specified pressure value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887463.3A CN106347335B (en) | 2016-10-11 | 2016-10-11 | A kind of force aid system for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610887463.3A CN106347335B (en) | 2016-10-11 | 2016-10-11 | A kind of force aid system for vehicle |
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| CN106347335A true CN106347335A (en) | 2017-01-25 |
| CN106347335B CN106347335B (en) | 2019-08-30 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106828466A (en) * | 2017-02-28 | 2017-06-13 | 安徽江淮汽车集团股份有限公司 | A kind of pure electric vehicle power-assisted braking arrangement and braking method |
| CN114684256A (en) * | 2020-12-30 | 2022-07-01 | 比亚迪股份有限公司 | Steering brake system and vehicle with same |
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| JP2003306140A (en) * | 2002-04-12 | 2003-10-28 | Mitsubishi Fuso Truck & Bus Corp | Hydraulic booster brake system |
| CN1785727A (en) * | 2004-12-10 | 2006-06-14 | 比亚迪股份有限公司 | Hydraulic assisted braking system of electric power automobile |
| CN102862601A (en) * | 2011-07-05 | 2013-01-09 | 东风汽车股份有限公司 | Electric hydraulic power-assisted steering brake system of automobile |
| CN203651881U (en) * | 2013-12-30 | 2014-06-18 | 东风汽车股份有限公司 | Hydraulic booster circuit system |
| CN204279606U (en) * | 2014-11-27 | 2015-04-22 | 盐城市步高汽配制造有限公司 | Pure electric coach Electro-Hydraulic Power Steering System |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003306140A (en) * | 2002-04-12 | 2003-10-28 | Mitsubishi Fuso Truck & Bus Corp | Hydraulic booster brake system |
| CN1785727A (en) * | 2004-12-10 | 2006-06-14 | 比亚迪股份有限公司 | Hydraulic assisted braking system of electric power automobile |
| CN102862601A (en) * | 2011-07-05 | 2013-01-09 | 东风汽车股份有限公司 | Electric hydraulic power-assisted steering brake system of automobile |
| CN203651881U (en) * | 2013-12-30 | 2014-06-18 | 东风汽车股份有限公司 | Hydraulic booster circuit system |
| CN204279606U (en) * | 2014-11-27 | 2015-04-22 | 盐城市步高汽配制造有限公司 | Pure electric coach Electro-Hydraulic Power Steering System |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106828466A (en) * | 2017-02-28 | 2017-06-13 | 安徽江淮汽车集团股份有限公司 | A kind of pure electric vehicle power-assisted braking arrangement and braking method |
| CN114684256A (en) * | 2020-12-30 | 2022-07-01 | 比亚迪股份有限公司 | Steering brake system and vehicle with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106347335B (en) | 2019-08-30 |
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