CN102556033A - Hydraulic pressure braking device and method used for pressure calibration in hydraulic pressure braking device - Google Patents
Hydraulic pressure braking device and method used for pressure calibration in hydraulic pressure braking device Download PDFInfo
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- CN102556033A CN102556033A CN2011104055349A CN201110405534A CN102556033A CN 102556033 A CN102556033 A CN 102556033A CN 2011104055349 A CN2011104055349 A CN 2011104055349A CN 201110405534 A CN201110405534 A CN 201110405534A CN 102556033 A CN102556033 A CN 102556033A
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- 238000000034 method Methods 0.000 title claims description 13
- 239000012530 fluid Substances 0.000 claims description 50
- 230000001186 cumulative effect Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 abstract description 7
- 238000012544 monitoring process Methods 0.000 abstract description 7
- 238000005086 pumping Methods 0.000 abstract 1
- 238000007599 discharging Methods 0.000 description 14
- 239000002828 fuel tank Substances 0.000 description 7
- 230000005611 electricity Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000009933 burial Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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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
- B60T7/00—Brake-action initiating means
- B60T7/02—Brake-action initiating means for personal initiation
- B60T7/04—Brake-action initiating means for personal initiation foot actuated
- B60T7/042—Brake-action initiating means for personal initiation foot actuated by electrical means, e.g. using travel or force sensors
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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
- B60T13/662—Electrical control in fluid-pressure brake systems characterised by specified functions of the control system components
-
- 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
- B60T13/68—Electrical control in fluid-pressure brake systems by electrically-controlled valves
- B60T13/686—Electrical control in fluid-pressure brake systems by electrically-controlled valves in hydraulic systems or parts thereof
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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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4072—Systems in which a driver input signal is used as a control signal for the additional fluid circuit which is normally used for braking
- B60T8/4077—Systems in which the booster is used as an auxiliary pressure source
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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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/44—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
- B60T8/441—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems using hydraulic boosters
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/48—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition connecting the brake actuator to an alternative or additional source of fluid pressure, e.g. traction control systems
- B60T8/4809—Traction control, stability control, using both the wheel brakes and other automatic braking systems
- B60T8/4827—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems
- B60T8/4863—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems
- B60T8/4872—Traction control, stability control, using both the wheel brakes and other automatic braking systems in hydraulic brake systems closed systems pump-back systems
-
- 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
- B60T8/90—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using a simulated speed signal to test speed responsive control means
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- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention relates to a hydraulic pressure braking device provided with a braking force amplifier and an amplifier return circuit. The return circuit includes a storage designed for storing hydraulic pressure liquid; a storage pressure sensor designed for monitoring pressure in the storage; a pump designed for pumping the hydraulic pressure liquid into the storage and a piston chamber in the braking force amplifier; a first hydraulic pressure liquid pipeline arranged between the pump and the braking force amplifier and provided with a first entry valve device; a second hydraulic pressure liquid pipeline arranged between the pump and the braking force amplifier in parallel with the first hydraulic pressure liquid pipeline. The second hydraulic pressure liquid pipeline includes a second entry valve device; the amplifier pressure sensor designed to monitoring pressure in the second hydraulic pressure pipeline; stop valve loaded by a spring arranged between the second entry valve device and the braking force amplifier and has a stop direction from the second entry valve device to the braking force amplifier and is opened in the stop direction under a given threshold volume flow.
Description
Background technology
Document DE 10 2,004 027 508 A1 disclose a kind of hydraulic braking system that is used for automobile, have concentrated pressure feeding mechanism.
Often hydraulic braking system combines use with the travel assist system of automobile, especially brake control system such as ESP (ESP electronic stability program) or ASR (slip-skid prevention adjusting).In special braking situation, can carry out electronically, automatically get involved the braking procedure that causes through the driver through this control system.
Has pressure sensor mostly at this ESP brake control system, the pressure ratio in the regulating loop of their monitoring control systems.For what regulate the worth expectation of ESP brake control system best be, make pressure sensor carry out bias compensation at the run duration that goes, be used for correspondingly calibrating zero point with the interval of rule.Carry out bias compensation through the corresponding controllers of brake control system mostly.
The pressure feeding mechanism that is used for the hydraulic braking system of ESP control system can comprise holder, stores the hydraulic fluid that is used for importing to the braking regulating loop therein.Be under the high pressure at this hydraulic fluid, generally in 100 to 250bar scope, typically between 130 to 165bar.This pressure is keeping in the whole adjusting operation and is not also discharging during at the automobile stagnation of movement.Only under failure condition, for example when the long-time shutdown of following valve leak, possibly cause holder to be emptied completely.This failure condition generally can not be accepted, and therefore under normal circumstances holder is under the lasting high pressure.Therefore the pressure sensor that is designed for pressure in the monitoring holder generally can not be in common bias compensation, because in fact it in servicely must not have pressure regulating.
Summary of the invention
Basic thought of the present invention is, by means of the pressure sensor calibration of carrying out through the base pressure sensor, be used at hydraulic braking system the reservoir pressure sensor, for example be used for the bias compensation of ESP brake control system.In hydraulic braking system, be provided with additional boiler check valve, it can realize utilizing the base pressure sensor of bias compensation to carry out the pressure sensor calibration for the reservoir pressure sensor in that bias compensation is in service for this reason.
Comprise the hydraulic braking system that is used for automobile according to hydraulic braking system as claimed in claim 1 of the present invention, have brake booster and amplifier circuit.This amplifier circuit comprises: holder, and it is designed to the stores hydraulic pressure fluid; The reservoir pressure sensor, it is designed to monitor the pressure in the holder; Pump, it is designed to hydraulic fluid is pumped in the piston chamber of holder and brake booster; First hydraulic fluid pipeline, it is arranged between pump and the brake booster, has first and gets into valve gear; With second hydraulic fluid pipeline, it is arranged between pump and the brake booster with first hydraulic fluid pipeline parallelly connectedly.This second hydraulic fluid pipeline comprises: second gets into valve gear; The amplifier pressure sensor, it is designed to monitor the pressure in second hydraulic fluid pipeline; With spring-loaded boiler check valve, it is arranged on second and gets between valve gear and the brake booster, has the direction of ending from the second entering valve gear to brake booster, and on direction, is opening below the given threshold value volume flow.
Advantageously making said spring-loaded boiler check valve is spring-loaded throttle non-return valve.
Said first gets into 2/2 change-over valve that valve gear can advantageously have two or more flow controls, and the said second entering valve gear has electrically-energized 2/2 change-over valve.
The part that when opening the first and second entering valve gears, flows through first and second hydraulic fluid pipelines that said threshold value volume flow can advantageously flow for cumulative volume.
A kind of being included in according to the pressure sensor Calibration Method that is used at the hydraulic braking system with characteristic as claimed in claim 1 of automobile of the present invention closed first and opened second when getting into valve gear and get into valve gear, and the reservoir pressure sensor is calibrated as benchmark with the amplifier pressure sensor.
Advantage of the present invention is, can realize the pressure sensor calibration between reservoir pressure sensor and the base pressure sensor, need not to discharge the holder that is used for hydraulic fluid or makes its no pressure.Another advantage of the present invention is, said reservoir pressure sensor in hydraulic braking system regulate run duration can bias correction, improve its precision thus.
Preferred improvement project is the content of dependent claims.
Description of drawings
Below by means of the embodiment illustrated in detail other features and advantages of the present invention in the accompanying drawing.In the accompanying drawing:
Fig. 1 illustrates the scheme circuit of the brake circuit distribution at diagonal angle,
Fig. 2 illustrates the scheme circuit according to the hydraulic braking system of the embodiment of the invention,
Fig. 3 illustrates the scheme circuit according to the hydraulic braking system of another embodiment of the present invention.
The element of same form and/or identical function is furnished with identical label symbol in the accompanying drawings.Certainly, accompanying drawing shown in needn't ratio provide truly.In addition, self-evident, each characteristic of the different embodiment shown in the accompanying drawings and/or scheme can at random be had a mind to the free burial ground for the destitute combination each other.
The specific embodiment
Fig. 1 illustrates the scheme circuit of the brake circuit distribution at diagonal angle.This brake circuit distribution 4 perhaps is also referred to as the X-bifurcation diagram or the X-distribution diagram is characterised in that, two brake circuits that separate 6 and 7 are respectively applied for the car side brake that is in the diagonal angle each other of four-wheel automobile.Brake circuit 6 is responsible for the pressure supply of car side brake 1c and 1d (a preceding left side is right with the back) in the instance of Fig. 1, and brake circuit 7 is responsible for the pressure supply of car side brake 1a and 1b (a back left side and the preceding right side).Distribute according to the brake circuit at the diagonal angle of Fig. 1 to comprise brake pedal 2, when handling, control main brake cylinder 3 through the automobilist by means of it.On main brake cylinder 3, connect fuel tank 5, can hydraulic fluid be assigned to two brake circuits 6 and 7 from fuel tank with hydraulic fluid 7.Make hydraulic fluid direct into car side brake 1a, 1b, 1c and 1d respectively through getting into valve 10,11,12 and 13 through disconnecting valve 8 and 9 from fuel tank 5.Discharge-service valve 14,15,16 and 17 is discharged hydraulic fluid again in each brake circuit 6 or 7.
In order to support or to amplify braking force high pressure pump 20 and 21 are set respectively in brake circuit 6 and 7, it can pump into hydraulic fluid to brake circuit 6 and 7 from holder 18 and 19.Control cock 23 and 24 is used for the fluid supply in control amplifier loop.Brake circuit distributes can have pressure sensor on the different critical point in brake circuit, and they monitor each pressure.Pressure sensor 25 is shown to example in Fig. 1, and it monitors from fuel tank 5 to brake circuit the pressure 6 the input channel in brake circuit 6.
Fig. 2 illustrates the scheme circuit according to the hydraulic braking system that is used for automobile 50 of a kind of embodiment of the present invention.Through the driver control drg time, detecting on the piston 51 through sensor acquisition braking force and braking skew.Can B.P. be delivered on the brake piston 58 from fuel tank 53 is transported to the piston chamber of brake piston 58 through making hydraulic fluid by means of brake circuit 52.The pressure of setting up thus in brake cylinder can be delivered on the hydraulic pressure wheel braking equipment 59, and it especially distributes 4, that kind as shown in Figure 1 corresponding to the brake circuit at diagonal angle.Pedal simulator 60 in this sense of touch can produce (simulation) counter pressure, and it is delivered to the brake operation sensation that detects on the piston and pass to the real physics of driver through control cock 61.
The pressure of pressure sensor 56 in can the piston chamber 55 of monitoring and detection piston 51.Can be provided with control cock 57 when needed, can the pressure in the piston chamber 55 be directly delivered in the piston chamber of brake piston 58 through it.
Said hydraulic braking system 50 comprises amplifier circuit 62, and it is connected on the hydraulic fluid system 52 of fuel tank 53.Amplifier circuit 62 can comprise discharging valve device 66,67 and 68, and they are arranged between the inlet of piston chamber and high pressure pump 71 of brake piston 58, and high pressure pump drives through actuating device 72.Can comprise first discharging valve device 66 and 67 at this discharging valve device, they can be designed to the discharge-service valve of flow control and can flow through the volume flow that changes according to energising.At this in two first discharging valve devices 66 shown in Fig. 2 and 67, but self-evident, also can realize first discharging valve device of varying number.First discharging valve device 66 and 67 electricity when normal braking procedure is handled ground and is discharged hydraulic fluid.Discharging valve device also can comprise second discharging valve device 68, and it can be designed to the discharging valve device of electric switch.Second discharging valve device 68 can be connected first discharging valve device 66 and 67 at emergency braking or full glancing impact electricity.
Said hydraulic braking system 50 also comprises high pressure pump 71, and it can drive through actuating device 72.Through pipeline 52 aspirated liquid hydraulic fluid and be fed to holder 69, it is designed to the stores hydraulic pressure fluid to said high pressure pump 71 from fuel tank 53.Pressure in holder 69 keeps constant at the adjusting run duration, and especially 100 to 250bar, and especially 130 to 165bar.Pressure in holder can be through 70 monitoring of reservoir pressure sensor.
Said hydraulic braking system 50 also comprises and gets into valve gear 63,64 and 65, and they are arranged between outlet and the brake piston 58 of high pressure pump 71 and are used for the piston chamber of delivering hydraulic fluid to brake piston 58, are used to reach and hydraulically amplify braking force.Said entering valve gear can comprise that first gets into valve gear 63 and 64.Said discharging valve device can comprise first discharging valve device 66 and 67, and they can be designed to the entering valve of flow control and can flow through the volume flow that changes according to energising., still self-evident at this at two first entering valve gears 63 and 64 shown in Fig. 2, can realize that also first of other quantity gets into valve gear.Handle first for input hydraulic pressure fluid electricity when the normal braking procedure and get into valve gear 63 and 64 and amplify according to desired braking force and to change ground and switch on.Said entering valve gear can comprise that also second gets into valve gear 65, and it can be designed to the entering valve gear of electric switch.The second entering valve gear 65 can or be expired the glancing impact electricity and connect the first entering valve gear 63 and 64 at emergency braking.
Said hydraulic braking system 50 comprises amplifier pressure sensor 70 in the first conduit under fluid pressure branch; The pressure that its monitoring loads through amplifier circuit 62; It is parallelly connected with the second conduit under fluid pressure branch that the second entering valve gear 65 and the first conduit under fluid pressure branch are set in the first conduit under fluid pressure branch, in the second conduit under fluid pressure branch, is provided with first and gets into valve gear 63 and 64.
These external first entering valve gear 65 downstream are provided with spring-loaded boiler check valve 74 in the second conduit under fluid pressure branch.This spring-loaded boiler check valve 74 has by direction, and this direction is pointed to first and got into valve gear 65 downstream.But spring-loaded boiler check valve 74 is being stayed open on direction with the pressure of confirming through spring.Select said definite power like this at this, spring-loaded boiler check valve 74 is stayed open below the threshold value volume flow through the second conduit under fluid pressure diverted flow, but more than threshold value volume flow, close hermetically through the second conduit under fluid pressure diverted flow.Calibrate the power of preloading spring and spring-loaded boiler check valve 74 is ended through retaining pressure at this.
Said spring-loaded boiler check valve 74 can be made up of spring-loaded throttle non-return valve.With boiler check valve 74 pipe branch is set parallelly connectedly, it has throttling or expansion valve 75 for this reason.Also can stipulate, make spring-loaded boiler check valve 74 in closing element, be furnished with given leak position, be used to the throttling function that provides desired.Through using throttling under two kinds of situation, to guarantee, closing the residual pressure that 65 cancellations later on of the first entering valve gear possibly exist.
Fig. 3 illustrates the scheme circuit according to the hydraulic braking system 30 of another embodiment of the present invention.This hydraulic braking system 30 especially with Fig. 2 in hydraulic braking system 50 similar.Hydraulic braking system 30 comprises brake booster 31, and it for example can comprise brake piston and amplifier circuit 32, and this brake piston has the piston chamber that is used to receive hydraulic fluid.Said amplifier circuit 32 comprises: holder 33, and it is designed to the stores hydraulic pressure fluid; Reservoir pressure sensor 34, it is designed to monitor the pressure in the holder 33; Pump 35, it is designed so that hydraulic fluid pumps in the piston chamber of holder 33 and brake booster 31; Have first hydraulic fluid pipeline 36 of the first entering valve gear 37, it is arranged between pump 35 and the brake booster 31; Second hydraulic fluid pipeline 38, it is arranged between pump 35 and the brake booster 31 with first hydraulic fluid pipeline 36 parallelly connectedly.Second hydraulic fluid pipeline 36 comprises: second gets into valve gear 39 and amplifier pressure sensor 40, and it is designed to monitor the pressure in second hydraulic fluid pipeline 38; Spring-loaded boiler check valve 41, it is arranged on second and gets between valve gear 39 and the brake booster 31, has the direction of ending from the second entering valve gear 39 to brake booster 31, and on direction, is opening below the given threshold value volume flow.Especially can constitute similarly with above-mentioned boiler check valve 74 at this spring-loaded boiler check valve 41.Can stipulate that also said spring-loaded boiler check valve 41 is made up of spring-loaded throttle non-return valve or boiler check valve with given minute leakage.First and second get into valve gear 37 and 39 especially can constitute with the first and second entering valve gears 63,64 or 65 among Fig. 2 similarly.
If the pressure in the adjustment amplifier circuit 32, the first entering valve gear 37 is partly switched in normal braking operation, and the second entering valve gear, 39 no powers.First to get into valve gear 37 and can switch on simultaneously equally and second get into valve gear 39 in order to switch on fully at emergency braking process or full braking procedure.First and second get into valve gear 37 or 39 can constitute like this, and promptly employed valve has approximate maximum flow or maximum pressure falls.Especially can stipulate, get into valve gear 37 for first and use two independent valve (being similar to the entering valve gear 63 and 64 among Fig. 2).Cumulative volume stream is got between the valve gear 37 and the second entering valve gear 39 first with the proportional distribution of 2:1.In other words, through second get into volume flows that valve gear 39 flows be basically the cumulative volume of maximum possible flow 1/3rd.
Said reservoir pressure sensor 34 always is under the pressure in that the adjusting of hydraulic braking system 30 is in service, because the pressure of holder 33 under normal circumstances can not be discharged.Therefore under normal circumstances can not realize the bias correction of reservoir pressure sensor 34 separately.And amplifier pressure sensor 40 can bias correction, because in hydraulic fluid pipeline 38 (amplifier pressure sensor 40 is set therein), between braking procedure, have normal pressure.
Can quote amplifier pressure sensor 40 as reference sensor for the bias correction of reservoir pressure sensor 34.Through spring adjustment force in spring-loaded boiler check valve 41, it is staying open spring-loaded boiler check valve 41 on direction, as long as through-flow volume flow is not higher than given threshold value volume flow for this reason.For bias correction reservoir pressure sensor 34 can make second to get into valve gear 39 energisings, and make first to get into valve gear 37 maintenance no powers simultaneously.Because the second entering valve gear 39 is opened in this case and the first entering valve gear 37 cuts out, whole volume flow passes second hydraulic fluid pipeline 38 and flows.If select the threshold value volume flow to flow less than cumulative volume now, the power that the retaining pressure that is produced produces on spring-loaded boiler check valve 41 is greater than the spring force of preloading spring and the boiler check valve 41 of cutoff spring loading.Exist and pressure identical on amplifier pressure sensor 40 on the reservoir pressure sensor 34 thus, and reservoir pressure sensor 34 can be calibrated or bias correction as benchmark through amplifier pressure sensor 40.Can get into valve gear 39 and close first simultaneously and get into valve gear 37 and bias correction reservoir pressure sensor 34 opening second through controller, this controller is attached to hydraulic braking system 30.
If between the pressure sensor alignment epoch, will import braking procedure, the first entering valve gear 37 of then correspondingly switching on.It is so much that the volume flow that flows through the second entering valve gear 39 has thus reduced the volume flow that flows through the first entering valve gear 37.If through second get into valve gear 39 volume flow get into valve gear 37 first and fully reduce during energising, then be lower than the threshold value volume flow and make spring-loaded boiler check valve 41 on direction, opening again, can realize the braking procedure of being accustomed to thus.Spring-loaded boiler check valve 41 in Fig. 3 can equally with spring-loaded boiler check valve among Fig. 2 74 be made up of spring-loaded throttle non-return valve equally.
The valve system of Fig. 1 to 3 can be made up of 2/2 change-over valve.Certainly also can use the valve of other form for the improvement project of the valve system of Fig. 1 to 3, they are known by the professional.
Claims (8)
1. the hydraulic braking system (30 that is used for automobile; 50), comprising:
Brake booster (31) and
Amplifier circuit (32; 62), this amplifier circuit comprises:
Holder (33; 69), it is designed to the stores hydraulic pressure fluid;
Reservoir pressure sensor (34; 70), it is designed to monitor holder (33; 69) pressure in;
Pump (35; 71), it is designed to hydraulic fluid is pumped into holder (33; 69) and in the piston chamber of brake booster (31);
First hydraulic fluid pipeline (36), it is arranged on pump (35; 71) and between the brake booster (31), have
First gets into valve gear (37; 63,64); With
Second hydraulic fluid pipeline (38), it is arranged on pump (35 with first hydraulic fluid pipeline (36) parallelly connectedly; 71) and between the brake booster (31), second hydraulic fluid pipeline comprises:
Second gets into valve gear (39; 65);
Amplifier pressure sensor (40; 73), it is designed to monitor the pressure in second hydraulic fluid pipeline (38); And
Spring-loaded boiler check valve (41; 74), it is arranged on second and gets into valve gear (39; 65) and between the brake booster (31), have from second and get into valve gear (39; 65) arrive the direction of ending of brake booster (31), and on direction, opening below the given threshold value volume flow.
2. hydraulic braking system (30 as claimed in claim 1; 50), wherein said spring-loaded boiler check valve (41; 74) be spring-loaded throttle non-return valve.
3. according to claim 1 or claim 2 hydraulic braking system (30; 50), wherein said first get into valve gear (37; 63,64) has 2/2 change-over valve (63 of at least two flow controls; 64).
4. like each described hydraulic braking system (30 in the above-mentioned claim; 50), wherein said second get into valve gear (39; 65) has electrically-energized 2/2 change-over valve (65).
5. like each described hydraulic braking system (30 in the above-mentioned claim; 50), wherein said amplifier pressure sensor (40; 73) be bias correction.
6. like each described hydraulic braking system (30 in the above-mentioned claim; 50), wherein said threshold value volume flow be cumulative volume stream get into valve gear (37 opening; 63,64; 39; 65) flow through first (36) and the part of second (38) hydraulic fluid pipeline time.
One kind be used for automobile like each described hydraulic braking system (30 of above-mentioned claim; 50) the pressure sensor Calibration Method in comprises: closing the first entering valve gear (37; 63,64) open second the time and get into valve gear (39; 65); And with amplifier pressure sensor (40; 73) as reference calibration reservoir pressure sensor (34; 70).
8. be used for like each described hydraulic braking system (30 of claim 1 to 6; 50) controller is used to carry out method as claimed in claim 7.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102010062694.5 | 2010-12-09 | ||
| DE201010062694 DE102010062694A1 (en) | 2010-12-09 | 2010-12-09 | Hydraulic brake assembly for use with e.g. anti-slip regulation system of four-wheel vehicle, has spring loaded non-return valve opened in reverse direction from intake valve to brake booster under predetermined volumetric flow |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102556033A true CN102556033A (en) | 2012-07-11 |
| CN102556033B CN102556033B (en) | 2016-03-16 |
Family
ID=46144557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110405534.9A Expired - Fee Related CN102556033B (en) | 2010-12-09 | 2011-12-08 | Hydraulic braking system and the method for pressure calibration in hydraulic braking system |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN102556033B (en) |
| DE (1) | DE102010062694A1 (en) |
| FR (1) | FR2968622A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113573956A (en) * | 2019-02-12 | 2021-10-29 | 爱皮加特股份公司 | Hydraulic system having at least one pressure supply device and safety door for connecting hydraulic circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6412882B1 (en) * | 1999-12-10 | 2002-07-02 | Toyota Jidosha Kabushiki Kaisha | Vehicle braking system having devices for controlling fluid flows between pressurizing and assisting chambers of master cylinder and pressure source and reservoir |
| US20050269869A1 (en) * | 2004-06-04 | 2005-12-08 | Stefan Lehenberger | Hydraulic brake system and method for influencing a hydraulic brake system |
| CN1966322A (en) * | 2005-11-18 | 2007-05-23 | 株式会社爱德克斯 | Brake control apparatus for vehicle |
| WO2010051907A1 (en) * | 2008-11-07 | 2010-05-14 | Hydac System Gmbh | Device for compensating for hydraulic effective pressures |
| CN101909956A (en) * | 2008-01-09 | 2010-12-08 | 罗伯特.博世有限公司 | Brake system and method for operating a brake system |
-
2010
- 2010-12-09 DE DE201010062694 patent/DE102010062694A1/en not_active Withdrawn
-
2011
- 2011-12-08 FR FR1161325A patent/FR2968622A1/en not_active Withdrawn
- 2011-12-08 CN CN201110405534.9A patent/CN102556033B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6412882B1 (en) * | 1999-12-10 | 2002-07-02 | Toyota Jidosha Kabushiki Kaisha | Vehicle braking system having devices for controlling fluid flows between pressurizing and assisting chambers of master cylinder and pressure source and reservoir |
| US20050269869A1 (en) * | 2004-06-04 | 2005-12-08 | Stefan Lehenberger | Hydraulic brake system and method for influencing a hydraulic brake system |
| CN1966322A (en) * | 2005-11-18 | 2007-05-23 | 株式会社爱德克斯 | Brake control apparatus for vehicle |
| CN101909956A (en) * | 2008-01-09 | 2010-12-08 | 罗伯特.博世有限公司 | Brake system and method for operating a brake system |
| WO2010051907A1 (en) * | 2008-11-07 | 2010-05-14 | Hydac System Gmbh | Device for compensating for hydraulic effective pressures |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113573956A (en) * | 2019-02-12 | 2021-10-29 | 爱皮加特股份公司 | Hydraulic system having at least one pressure supply device and safety door for connecting hydraulic circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102556033B (en) | 2016-03-16 |
| DE102010062694A1 (en) | 2012-06-14 |
| FR2968622A1 (en) | 2012-06-15 |
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