WO2020250055A1 - Unité de commande hydraulique pour système de freinage de véhicule - Google Patents

Unité de commande hydraulique pour système de freinage de véhicule Download PDF

Info

Publication number
WO2020250055A1
WO2020250055A1 PCT/IB2020/054614 IB2020054614W WO2020250055A1 WO 2020250055 A1 WO2020250055 A1 WO 2020250055A1 IB 2020054614 W IB2020054614 W IB 2020054614W WO 2020250055 A1 WO2020250055 A1 WO 2020250055A1
Authority
WO
WIPO (PCT)
Prior art keywords
damper
brake
pipe
hydraulic pressure
valve
Prior art date
Application number
PCT/IB2020/054614
Other languages
English (en)
Japanese (ja)
Inventor
仁張勉
Original Assignee
ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング filed Critical ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング
Priority to DE112020002884.4T priority Critical patent/DE112020002884T5/de
Priority to JP2021525399A priority patent/JP7270732B2/ja
Priority to CN202080043553.9A priority patent/CN113924231B/zh
Publication of WO2020250055A1 publication Critical patent/WO2020250055A1/fr

Links

Classifications

    • 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
    • B60T8/4068—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 the additional fluid circuit comprising means for attenuating pressure pulsations
    • 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
    • B60T15/00—Construction arrangement, or operation of valves incorporated in power brake systems and not covered by groups B60T11/00 or B60T13/00
    • B60T15/02—Application and release valves
    • B60T15/36—Other control devices or valves characterised by definite functions
    • B60T15/38—Other control devices or valves characterised by definite functions for quick take-up and heavy braking, e.g. with auxiliary reservoir for taking-up slack
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/02—Arrangements of pumps or compressors, or control devices therefor
    • 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
    • B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
    • B60T17/04—Arrangements of piping, valves in the piping, e.g. cut-off valves, couplings or air hoses
    • 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
    • B60T8/4081—Systems with stroke simulating devices for driver input
    • 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
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
    • F04B11/0008—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation using accumulators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
    • F04B49/24—Bypassing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves

Definitions

  • INDUSTRIAL APPLICABILITY Hydraulic control unit of a brake system for a vehicle.
  • the present invention relates to a brake hydraulic pressure control device for a vehicle brake system, and more particularly to a brake hydraulic pressure device including a pump for increasing the hydraulic pressure of the brake fluid.
  • a conventional brake hydraulic pressure control device the main flow path that communicates the master cylinder and the wheel cylinder, the sub-flow path that allows the brake liquid in the main flow path to escape, and the pump in the sub-flow path to the main flow path.
  • -It may have a supply channel to supply the liquid and a hydraulic pressure rate of £ each.
  • the upstream end of the brake liquid flow in the secondary flow path is connected to the wheel cylinder side region of the main flow path with reference to the booster valve, and is connected to the downstream side of the secondary flow path. The end is connected to the area of the main flow path on the master cylinder side with respect to the booster valve.
  • the upstream end of the brake fluid flow in the supply flow path communicates with the master cylinder, and the downstream end of the supply flow path is the downstream region of the secondary flow path with reference to the pressure reducing valve. And it is connected to the suction side of the pump provided in that area.
  • a circuit control valve is provided in the area of the main flow path on the master cylinder side with reference to the connection with the downstream end of the sub flow path, and the suction control valve is provided in the middle of the supply flow path. Is provided.
  • a booster valve, a pressure reducing valve, a pump, a circuit control valve, and a suction control valve the housing in which they are incorporated, and an electronic control unit that controls their operation (thus, a brake hydraulic pressure control device). It is configured.
  • the hydraulic pressure of the hydraulic pressure circuit is controlled by controlling the operation of the brake hydraulic pressure control device (here, the booster valve, pressure reducing valve, pump, circuit control valve, and suction control valve). Will be done.
  • the boost valve opens.
  • the pump is driven with the pressure reducing valve closed, the circuit control valve closed, and the intake control valve open.
  • the brake hydraulic pressure control device described in Patent Document 1 includes one pump in one hydraulic pressure circuit, and causes the pulsation of the brake liquid discharged from the pump to the discharge side of the pump. It is equipped with a damper that can be reduced.
  • Patent Document 1 Japanese Patent Application Laid-Open No. 2 0 1 7— 5 3 7 0 20
  • the damper described in Patent Document 1 reduces the pulsation by temporarily accommodating the pulsation of the brake liquid discharged from the pump in a tube-shaped and elastically deformable suppressing element.
  • the brake liquid that has flowed into the restraining element does not contribute to the increase in the hydraulic pressure of the wheel cylinder that brakes the vehicle. Therefore, when the brake liquid is pumped (the vehicle is braked by automatically pressurizing it). There will be a delay in getting the desired brakes. This means that if you want to brake the vehicle suddenly to avoid an imminent collision, collision avoidance or mitigation should be prioritized over noise. Therefore, it is desirable to use a system that can shorten the start-up time of the brake pump depending on the vehicle conditions.
  • the present invention has been made in the context of the above-mentioned problems, and the brake fluid discharged from the pump is passed to the wheel cylinder in response to the braking mode of the vehicle and the required braking force without using a damper. It is an object of the present invention to provide a brake hydraulic pressure control device that enables flow.
  • the brake hydraulic pressure control device includes a discharge pipe for discharging the brake liquid boosted by a pump, a damper for which the brake liquid flows in from the discharge pipe, and the brake.
  • a brake liquid comprising a bypass valve that guides the liquid to selectively pass through either a damper pipe through which the brake liquid flowing into the damper flows out or a pipe pass pipe bypassing the damper.
  • a pressure control device here, the pipe pass valve includes a piston having a damper pipe line opening leading to the damper pipe line and a pipe pass line opening leading to the pipe pass line.
  • a pipe pass valve that guides the brake liquid flowing into the damper to selectively pass through either the damper pipe or the pipe pass pipe bypassing the damper.
  • the brake hydraulic pressure control device (the pipe pass valve is provided with a damper pipe opening leading to the damper pipe and a piston having a pipe pass opening leading to the pipe pass pipe.
  • a damper line that reduces the pulsation of the brake liquid that is pressurized by the pump and is accompanied by pulsation according to the braking mode of the vehicle and the required braking force, or a pipe pass line that bypasses the damper. It is possible to selectively pass the pump, and it is possible to improve the degree of freedom in the arrangement of the damper, the damper pipe, and the pipe pass pipe.
  • FIG. 1 is a diagram showing an example of a configuration of a brake hydraulic pressure control device according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing the arrangement of damper members of a conventional brake hydraulic pressure control device.
  • FIG. 3 is a diagram showing the arrangement of damper members of the brake hydraulic pressure control device according to the embodiment of the present invention.
  • FIG. 4 is a view showing a cross section of a pipe pass valve of a brake hydraulic pressure control device according to an embodiment of the present invention. ⁇ 0 2020/250055 ⁇ (: 17162020/054614
  • FIG. 5 is a diagram illustrating the movement of the bypass valve of the brake hydraulic pressure control device according to the embodiment of the present invention.
  • FIG. 6 is a diagram illustrating the movement of the bypass valve of the brake hydraulic pressure control device according to the embodiment of the present invention.
  • the brake system including the brake hydraulic pressure control device according to the present invention is mounted on a four-wheeled vehicle is described, but the brake hydraulic pressure control according to the present invention is described.
  • the brake system, including the device may be installed in vehicles other than four-wheeled vehicles (two-wheeled vehicles, trucks, passes, etc.).
  • the configuration, operation, etc. described below are examples, and the brake system including the hydraulic pressure control unit according to the present invention is not limited to such configuration, operation, etc.
  • the same or similar members or parts are designated by the same reference numerals, or the reference numerals are omitted. In addition, the detailed structure is simplified or omitted as appropriate.
  • the brake system shown in Fig. 1 is a diagram showing only the brake system for one wheel in the hydraulic circuit of the brake system for four-wheeled vehicles.
  • the brake system is applied to a brake system that amplifies the pedal effort of the brake pedal by the driver and transmits it to the wheel cylinder without using a booster.
  • the brake system may be an example of using a booster.
  • the brake hydraulic pressure controller 20 has four hydraulic circuits from the first to the fourth.
  • the second to fourth hydraulic circuits have the same configuration as the first hydraulic circuit, so they are omitted from Fig. 1. Hoi of each of the four wheels
  • the brake liquid is supplied from the master cylinder 1 3 to the cylinder 1 4 via the first to fourth hydraulic circuits.
  • the first hydraulic circuit 30 includes a pump 45 driven by a motor 49.
  • each of the first hydraulic cycles £ 30 is equipped with an accumulator 25 and a damper 27.
  • the pump 4 5 is driven by the motor 4 9 to discharge the brake fluid.
  • the drive of the motor 49 is controlled by the electronically controlled unit 10.
  • the number of pumps 45 provided in the first hydraulic circuit 30 is not limited to one.
  • a first pressure sensor 17 is provided in the pipeline that communicates with the master cylinder 13.
  • the first pressure cassette 1 7 detects the internal pressure of the master cylinder 1 3.
  • a second pressure sensor 16 is provided in the pipeline that communicates with the wheel cylinder 14 of the wheel hydraulic brake 15.
  • the second pressure sensor 1 6 detects the internal pressure of the wheel cylinder 1 4.
  • the first hydraulic circuit 30 includes a plurality of electromagnetic control valves.
  • the plurality of electromagnetic control valves are a circuit control valve 2 2 which is a normally closed type and can be linearly controlled, a suction control valve 2 6 which is a normally closed type and can be controlled on and off, and a pressure booster valve 2 3 which is a normally open type and can be linearly controlled. Includes a pressure reducing valve 24 that is normally closed and controlled on and off.
  • Circuit control valve 2 2 connecting the discharge side of the master cylinder 1 3 and the pump 4 5 'are disposed in the flow path 3 2.
  • the circuit control valve 2 2 can be linearly controlled, and the flow path area between the master cylinder 1 3 and the booster valve 2 3 is continuously adjusted.
  • Suction control valve 2 6 connecting the suction side of the master cylinder 1 3 and the pump 4 5 'is arranged in the conduit 3 1.
  • the suction control valve 26 communicates or shuts off between the master cylinder 1 3 and the suction side of the pump 45.
  • Pressure reducing valve 2 4 the pump 4 5 on the suction side and the wheel - Rushirinda connecting the 1 4 'are disposed in the flow path 3 4.
  • the pressure reducing valve 2 4 communicates or shuts off between the suction side of the pump 4 5 and the wheel cylinder 1 4.
  • the pressure reducing valve 2 4 reduces the pressure by supplying the brake fluid supplied to the wheel cylinder 14 of the wheel hydraulic brake 1 5 to the accumulator 2 5 in the valve open state. By intermittently opening and closing the pressure reducing valve 24, the flow rate of the brake fluid flowing from the wheel cylinder 14 to the accumulator 25 can be adjusted.
  • the electronic control unit 10 performs the following hydraulic pressure control operations in addition to the well-known hydraulic pressure control operations (ABS control operation, ESP control operation, etc.), for example.
  • the electronic control unit 10 closes the circuit control valve 2 2, opens the suction control valve 26, and opens the boost valve 2 3, and operates the motor 4 9 in a 4-dog state. Drive. This makes it possible for the brake fluid from the master cylinder 1 3 to flow to the wheel cylinder 1 4 through the pipeline 3 1 and the pipeline 3 3. At this time, the electronic control unit 10 limits the flow of the brake fluid from the wheel cylinder 14 to the accumulator 25 by keeping the pressure reducing valve 24 in the closed state. In addition, the electronic control unit 10 adjusts the hydraulic pressure of the brake fluid of the wheel cylinder 14 by linearly controlling the ⁇ pressure valve 2 3.
  • Fig. 2 will be used to explain the arrangement of damper members and the flow of brake liquid in a conventional brake hydraulic pressure control device.
  • the damper 2 7 is arranged on the discharge pipe line 3 8 through which the brake liquid discharged from the pump 4 5 passes, and the throttle 2 8 and the check valve 2 9 are arranged downstream of the damper 2 7.
  • Pump 45 is configured as a plunger-type pump with two pump members (not shown), which are driven by motors 49 using eccentric bodies.
  • the pump member pumps the brake fluid through the discharge line 38 during operation, causing a flow of brake fluid with hydraulic pressure.
  • This brake fluid pulsates based on a plunger that acts alternately on the pump member.
  • the pump 4 5 is located in the hydraulic housing 21 and pumps the pulsated brake fluid to the discharge line.
  • the damper 27 is used to reduce the pulsation of the brake fluid, and therefore has a damping chamber inside.
  • the brake liquid pumped by the pump once flows into the damping chamber. After that, the brake fluid that has flowed out of the damping chamber of the damper 27 flows out to the pipeline 3 3 through the throttle 28.
  • Aperture 2 8 can be adjusted by variable aperture action ⁇ 2020/250055 ⁇ (: 17132020/054614
  • the piping fluid stays in the normal position, so the brake fluid is released. Pass through the damper pipeline.
  • the hydraulic pressure of the brake liquid passing through the pipe pass valve 3 9 is relatively high, for example, 20 pal or more, the brake liquid of the pipe pass valve 3 9 passes through the pipe pass pipeline 3 7. It switches to the passing position. For this reason, the bypass valve 3 9 guides the brake fluid to bypass the damper 2 7 and throttle 2 8 when the hydraulic pressure is relatively high.
  • check valves 2 9 and 35 are provided downstream of the damper 2 7 provided in the damper pipe 3 6 and in the pipe pass pipe 3 7.
  • Check valves 2 9, 35 are higher at the bottom of the check valves 2 9, 35 than above; night pressure is configured to close when fluid pressure is generated. If the check valves 2 9, 3 5 are closed and the bypass valve 3 9 closes the damper line 3 6, the damper 2 7 located downstream of the bypass valve 3 9 is shaken. Completely fluid separation from the pipeline system of the hydraulic pressure controller.
  • Figure 4 shows a cross section of a bypass valve that can be controlled depending on the hydraulic pressure of the brake fluid.
  • the bypass valve 3 9 has a cup-shaped piston 3 9 1 and a spring 3 9 2.
  • One end of the spring 3 9 2 is coupled to the bottom of the piston 3 9 1 and the other end is coupled to the end of the discharge line 3 8 and the spring 3 9 1 is the pumped brake fluid.
  • the piston 3 91 is urged in the direction opposite to the inflow direction.
  • a seal ring 3 95 is provided on the outer wall of the piston 3 9 1 so that the brake fluid does not flow back into the discharge pipe 3 8 through the outer wall of the piston.
  • the piston 3 9 1 is shown to be in the normal position, and the piston opening metal ring 3 9 6 is provided so that the piston 3 9 1 can be held in the normal state.
  • the spring 3 9 2 is a coiled spring in the embodiment, and the hydraulic pressure of the brake liquid passing through the bypass valve 3 9 is relatively low, specifically less than 20 pars. If so, the panel constant is set so that the spring is held in the position shown in Figure 4. The spring constant is adjusted in advance so that the spring 3 92 contracts when a predetermined force is applied to the piston by the hydraulic pressure of the brake fluid.
  • the piston 3 9 1 also has a damper line opening 3 9 3 and a pipes line opening 3 9 4 lateral to the axis of the piston.
  • the damper line opening 3 9 3 and the pipe pass line opening 3 9 4 are arranged at positions symmetrical with respect to the axial direction of the piston 3 9 1 so that the piston can be easily processed.
  • the arrangement of the damper pipe opening 3 9 3 and the pipes pipe opening 3 94 is not limited to this embodiment, and the arrangement may be appropriately changed according to the arrangement of the damper pipe and the pipe pass pipe. In the normal position, the damper line opening leads to the damper line 36, and the bypass line opening 3 9 4 is closed by the discharge line 3 8.
  • Figure 5 shows the two valve positions of the bypass valve 39.
  • Figure 5 shows the normal position of the bypass valve or the position of the bypass valve as the brake fluid with relatively low hydraulic pressure passes through the bypass valve.
  • Figure 6 shows the position of the bypass valve as the brake fluid with a relatively high hydraulic pressure passes through the bypass valve.
  • an elastically deformable restraining element 2 7 1 is installed inside the damper 2 7, to accommodate the pulsating brake liquid.
  • a damper pipe 3 6 is provided below the damper 2 7, so as to connect the discharge pipe 3 8 and the damper 2 7.
  • the damper inflow pipe 3 6 3 that passes when the brake fluid flows into the damper 2 7 from the discharge pipe 3 8 and the damper that passes when the brake fluid flows out from the damper 2 7
  • the outflow pipeline 3 6 is provided substantially parallel to the axis of the damper 2 7.
  • the pipe pass line 3 7 is connected to the discharge line 3 8 in parallel with the damper inflow line 3 6 3 and the damper outflow line 3 6 ⁇ .
  • the damper inflow pipe 3 6 3 and the pipes pipe 3 7 are arranged on opposite sides of the discharge pipe 3 8 and the pipes valve 3 9 is the damper inflow pipe 3 6 3 and the pipes pipe 3 It is arranged at an angle with respect to 7.
  • the angle formed by the sliding direction of the pipe pass valve and the damper inflow pipe line 3 6 3 is an acute angle (also formed by the sliding direction of the pipe pass valve and the pipe pass pipe line 3 7). They are arranged so that the angles to be formed are acute.
  • the dashed arrow in Figure 5 shows the flow of the brake fluid as it passes through the bypass valve.
  • the brake fluid that has flowed from the discharge pipe 3 8 to the piston 3 9 1 is accommodated in the restraining element 2 7 1 of the damper 2 7 through the damper pipe opening 3 9 3 and the damper inflow pipe 3 6 3. ..
  • the pipe pass pipe opening 3 9 4 is closed by the discharge pipe 3 8 4, the brake fluid flows out from the pipe pass pipe opening 3 94. ⁇ 2020/250055 ⁇ (: 17132020/054614
  • the dashed arrow in Fig. 6 shows the flow of the brake liquid as it passes through the bypass valve with a relatively high hydraulic pressure.
  • the brake fluid that has flowed into the piston 3 9 1 from the discharge pipe 3 8 flows out directly to the pipe 3 3 3 through the pipes pipe opening 3 94 and the pipes pipe 3 7.
  • the damper pipe opening 3 93 is closed by the discharge pipe, the brake fluid does not flow out through the damper pipe opening. Therefore, it is possible to bypass the damper 2 7 and the throttle 2 8 to reach the pipeline 3 3.
  • the brake hydraulic pressure control device includes the piston 3 9 1 of the pipe pass valve 3 9 (this, the damper pipe opening 3 9 3 leading to the damper pipe 3 6 and the pipe pass leading to the pipe pass pipe 3 7). Since the configuration has a pipeline opening 3 94, it is possible to select a damper pipeline that reduces pulsation or a piper pipeline that bypasses the damper, depending on the braking mode of the vehicle and the required braking force. It is possible to pass through the pipes in a targeted manner, and it is possible to improve the degree of freedom in the arrangement of the damper pipe and the pipe pass pipe.
  • the bypass valve 3 9 is arranged so as to be inclined with respect to the damper pipeline 3 6 or the bypass pipeline 3 7, and the damper pipeline opening 3 9 3 or the bypass pipe 3 9 is arranged. Since the path opening 3 9 4 is provided on the side of the axis of the piston 3 91, it is possible to fit the pipe pass valve 39, the damper pipe line 36, and the entire pipe pass line into the compact. It is possible to reduce the sliding distance of the piping valve.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Transportation (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Braking Systems And Boosters (AREA)

Abstract

L'invention concerne un dispositif de commande de pression de liquide de frein qui permet au liquide de frein de contourner un amortisseur qui absorbe des pulsations, en fonction de la force de freinage requise d'un véhicule. Le dispositif de commande de pression de liquide de frein (20) selon la présente invention comprend : un conduit de refoulement (38) à travers lequel le liquide de frein mis sous pression par une pompe (45) est refoulé; un amortisseur (27) dans lequel le liquide de frein s'écoule à partir du conduit de refoulement (38); et une soupape de dérivation (39) qui guide le liquide de frein pour qu'il passe sélectivement à travers un conduit d'amortisseur (36) dans lequel s'écoule le liquide de frein s'écoulant dans l'amortisseur (27) ou un conduit de dérivation (37) qui contourne l'amortisseur (27). La soupape de dérivation (39) est équipée d'un piston (391) qui présente une ouverture pour conduit d'amortisseur (393) menant au conduit d'amortisseur (36) et une ouverture pour conduit de dérivation (394) menant au conduit de dérivation (37).
PCT/IB2020/054614 2019-06-14 2020-05-15 Unité de commande hydraulique pour système de freinage de véhicule WO2020250055A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE112020002884.4T DE112020002884T5 (de) 2019-06-14 2020-05-15 Hydrauliksteuereinheit eines Fahrzeugbremssystems
JP2021525399A JP7270732B2 (ja) 2019-06-14 2020-05-15 車両用のブレーキシステムの液圧制御ユニット
CN202080043553.9A CN113924231B (zh) 2019-06-14 2020-05-15 车辆用制动系统的液压控制单元

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2019111178A JP2020203526A (ja) 2019-06-14 2019-06-14 車両用のブレーキシステムの液圧制御ユニット
JP2019-111178 2019-06-14

Publications (1)

Publication Number Publication Date
WO2020250055A1 true WO2020250055A1 (fr) 2020-12-17

Family

ID=70968971

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2020/054614 WO2020250055A1 (fr) 2019-06-14 2020-05-15 Unité de commande hydraulique pour système de freinage de véhicule

Country Status (4)

Country Link
JP (2) JP2020203526A (fr)
CN (1) CN113924231B (fr)
DE (1) DE112020002884T5 (fr)
WO (1) WO2020250055A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115339431A (zh) * 2022-08-30 2022-11-15 奇瑞汽车股份有限公司 一种汽车用降噪制动硬管及降噪方法

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407721A1 (fr) * 1989-07-14 1991-01-16 Robert Bosch Gmbh Dispositif pour l'amortissement des variations de pression
US5255963A (en) * 1989-08-09 1993-10-26 Robert Bosch Gmbh Hydraulic vehicle brake system with anti-skid apparatus
JPH1081224A (ja) * 1996-09-11 1998-03-31 Unisia Jecs Corp ブレーキ制御装置
DE19953001A1 (de) * 1999-11-04 2001-05-10 Continental Teves Ag & Co Ohg Hydraulische Kraftfahrzeugbremsanlage mit Radschlupfregelung
JP2011005887A (ja) * 2009-06-23 2011-01-13 Advics Co Ltd ダンパ装置及びブレーキ液圧制御装置
JP2015209203A (ja) * 2014-04-24 2015-11-24 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング 車両ブレーキ装置の、ダンパを備えた液圧装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545951Y2 (fr) * 1974-11-25 1980-10-28
JP2002242823A (ja) * 2001-02-13 2002-08-28 Hitachi Constr Mach Co Ltd アキシャルピストン型油圧ポンプ
DE102014221891A1 (de) * 2014-10-28 2016-04-28 Robert Bosch Gmbh Auslassventilanordnung einer Kolbenpumpe einer Fahrzeugbremsanlage
DE102014224829A1 (de) 2014-12-04 2016-06-09 Robert Bosch Gmbh Druckänderungsdämpfer für eine schlupfgeregelte, hydraulische Fahrzeugbremsanlage und Fahrzeugbremsanlage mit einem solchen Druckänderungsdämpfer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0407721A1 (fr) * 1989-07-14 1991-01-16 Robert Bosch Gmbh Dispositif pour l'amortissement des variations de pression
US5255963A (en) * 1989-08-09 1993-10-26 Robert Bosch Gmbh Hydraulic vehicle brake system with anti-skid apparatus
JPH1081224A (ja) * 1996-09-11 1998-03-31 Unisia Jecs Corp ブレーキ制御装置
DE19953001A1 (de) * 1999-11-04 2001-05-10 Continental Teves Ag & Co Ohg Hydraulische Kraftfahrzeugbremsanlage mit Radschlupfregelung
JP2011005887A (ja) * 2009-06-23 2011-01-13 Advics Co Ltd ダンパ装置及びブレーキ液圧制御装置
JP2015209203A (ja) * 2014-04-24 2015-11-24 ローベルト ボッシュ ゲゼルシャフト ミット ベシュレンクテル ハフツング 車両ブレーキ装置の、ダンパを備えた液圧装置

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115339431A (zh) * 2022-08-30 2022-11-15 奇瑞汽车股份有限公司 一种汽车用降噪制动硬管及降噪方法
CN115339431B (zh) * 2022-08-30 2023-08-22 奇瑞汽车股份有限公司 一种汽车用降噪制动硬管及降噪方法

Also Published As

Publication number Publication date
JP2020203526A (ja) 2020-12-24
DE112020002884T5 (de) 2022-02-24
JPWO2020250055A1 (fr) 2020-12-17
JP7270732B2 (ja) 2023-05-10
CN113924231B (zh) 2024-03-29
CN113924231A (zh) 2022-01-11

Similar Documents

Publication Publication Date Title
KR20100108619A (ko) 맥동 감쇠가 개선된 유압 시스템
JPH01240353A (ja) アンチスキッド制御付き液圧ブレーキ装置
JP5433796B2 (ja) 車両の液圧式ブレーキシステムを作動する方法および車両の液圧式ブレーキシステムのための制御装置
JP5140664B2 (ja) 人力式の常用ブレーキ及びホイールスリップを制御するための装置を備えた液圧式の車両ブレーキ装置
WO2017208728A1 (fr) Dispositif de commande hydraulique et système de freinage
US20190217834A1 (en) Hydraulic Control Apparatus and Brake System
US8998350B2 (en) Pressure damping device for brake system
WO2020250055A1 (fr) Unité de commande hydraulique pour système de freinage de véhicule
US6264287B1 (en) Hydraulic brake apparatus for a vehicle
JP5708514B2 (ja) 逆止弁およびそれを用いたブレーキ装置
US11738727B2 (en) Brake control device
JP3246366B2 (ja) ブレーキ液圧制御装置
US9969371B2 (en) Slip-controllable vehicle brake system
WO2020109919A1 (fr) Unité de commande hydraulique pour système de freinage de véhicule
JP2001213295A (ja) 車両用液圧ブレーキ装置
JP2016203938A (ja) 車両用制動装置
JP6674724B2 (ja) 車両ブレーキ装置の、ダンパを備えた液圧装置
JP7123139B2 (ja) 車両用のブレーキシステムの液圧制御ユニット
JP3330161B2 (ja) 車両用ブレーキ装置
US6702402B1 (en) Vehicular braking force control apparatus
US6283558B1 (en) Hydraulic motor vehicle braking system with wheel slip controller
JP4802706B2 (ja) 電子制御液圧ブレーキシステム
JP6724470B2 (ja) 車両用制動装置
JP4137226B2 (ja) 車両用液圧ブレーキ装置
JP6759580B2 (ja) 液圧制動装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20730110

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 2021525399

Country of ref document: JP

Kind code of ref document: A

122 Ep: pct application non-entry in european phase

Ref document number: 20730110

Country of ref document: EP

Kind code of ref document: A1