Brake adjusting system

Abstract

The utility model discloses a brake adjusting system, which comprises an oil tank; the oil tank is connected with the brake module; the output end of the braking module is connected with the adjusting module; the output end of the adjusting module is connected with brake calipers; the output end of the adjusting module is connected with the oil tank through a liquid reducing one-way valve to conduct brake liquid circulation. Two liquid reducing one-way valves are designed to replace two energy accumulators, the design of ESC in DPB + ESC is simplified, a hydraulic storage device is removed, liquid obtained after pressure reduction directly flows back to an oil tank after an ABS function is triggered, when the ABS function is triggered, a pressure increasing valve is closed, a pressure reducing valve is opened, brake liquid discharged from the pressure reducing valve enters the oil tank through the two liquid reducing one-way valves, and the ABS pressure relief action is completed. And the pressure relief efficiency of the ABS is improved, and the risk of overlong locking time is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile brake control system especially relates to a brake regulating system. BACKGROUND

[0002] The existing brake system is generally hydraulic brake system combined by DPB (intelligent decoupling brake system) + ESC (electronic stability control system), each wheel brake is connected on the suction side of the hydraulic pump of the power source of the running dynamic regulator through each outlet valve, wherein the wheel brake is connected on the suction side of the same hydraulic pump through the outlet valve, and the wheel brake is connected on the pressure side of the hydraulic pump through the inlet valve. The hydraulic accumulator is connected between the outlet valve and the hydraulic pump on the suction side of the hydraulic pump.

[0003] After triggering the brake anti-lock function during the vehicle journey, the outlet valve is opened, the brake fluid in each wheel brake enters the hydraulic accumulator through the outlet valve, the power source of the running dynamic regulator drives the hydraulic pump to work, and the brake fluid in the hydraulic accumulator is drawn to the separation valve and then returns to the power brake pressure generator through the plunger valve; the hydraulic accumulator has a fixed volume, and if the accumulator is filled during the ABS process, there is a risk of too long vehicle lock time.

[0004] During the vehicle ABS process, the liquid discharged by pressure reduction is temporarily stored in the hydraulic accumulator and then carried away by the motor and the plunger pump, the noise in the process is large, the driver and the passenger experience is poor, the hydraulic accumulator, this part generally involves check valve, accumulator piston, piston return spring, accumulator cover and other subparts, increases the product subpart cost and management cost, increases the product assembly cost, and increases the product assembly process failure probability. UTILITY MODEL CONTENTS

[0005] The utility model aims at solving the shortcomings in the prior art and provides a brake regulating system.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a brake regulating system, comprising:

[0007] The oil tank is connected with the brake module.

[0008] The output end of the brake module is connected with the regulating module.

[0009] The output end of the brake module is connected with the regulating module.

[0010] The output end of the regulating module is connected with the brake caliper.

[0011] The output end of the regulating module is connected with the oil tank through the liquid reducing check valve, and the brake fluid circulation is carried out.

[0012] As a further description of the above technical solution: the oil tank comprises a first liquid storage chamber, a second liquid storage chamber and a third liquid storage chamber, the first liquid storage chamber and the second liquid storage chamber are connected with the brake pedal, and the third liquid storage chamber is connected with the first motor.

[0013] As a further description of the above technical solution: a displacement sensor is connected on the brake pedal, and three loop isolation valves are connected in parallel at the output end of the brake pedal, and any loop isolation valve is connected with a pedal simulator or a pressure sensor.

[0014] As a further description of the above technical solution: the first liquid storage chamber and the second liquid storage chamber are respectively connected with the output ends of the two loop isolation valves through liquid suction one-way valves, and the output ends of the two loop isolation valves are connected with the adjustment module.

[0015] As a further description of the above technical solution: a first plunger isolation valve is connected between the third liquid storage chamber and the first motor, and the output ends of the two loop isolation valves are respectively connected with the first motor through a second plunger isolation valve and a third plunger isolation valve.

[0016] As a further description of the above technical solution: a voltage sensor, a current sensor and a pressure sensor are connected on the first motor.

[0017] As a further description of the above technical solution: the adjustment module comprises a second motor, the second motor is directly connected with an adjustment isolation valve, and the adjustment isolation valve is connected in parallel with a bypass one-way valve.

[0018] As a further description of the above technical solution: the adjustment isolation valve is also connected in parallel with an oil suction valve, one side of any oil suction valve is provided with a pressure sensor, the oil suction valve is connected with a plunger pump, and the plunger pump is connected with the second motor.

[0019] As a further description of the above technical solution: the output end of the adjustment isolation valve is connected in parallel with a pressure increasing valve, and the output end of the pressure increasing valve is connected with the brake caliper.

[0020] As a further description of the above technical solution: the output end of the pressure increasing valve is also connected with a pressure reducing valve, one side of the pressure reducing valve is connected with the brake caliper, and the other side is connected with the first liquid storage chamber or the second liquid storage chamber through the liquid suction one-way valve.

[0021] The above technical solution has the following advantages or beneficial effects:

[0022] 1. By designing two liquid reducing one-way valves to replace two accumulators, the design of the ESC in the DPB+ESC is simplified, the hydraulic accumulator is removed, and the liquid discharged after the ABS function is triggered is directly returned to the oil tank, when the ABS function is triggered: the pressure increasing valve is closed, the pressure reducing valve is opened, and the brake fluid discharged from the pressure reducing valve enters the oil tank through two liquid reducing one-way valves, the ABS pressure relief action is completed, the pressure relief efficiency of the ABS is increased, and the risk of overlong locking time is reduced.

[0023] 2. The design structure of the system is simplified, the NVH (noise, vibration and harshness) noise is reduced, the passenger experience is improved, the product cost is reduced, and the process qualification rate is improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Fig. 1 A structure diagram of a brake adjusting system provided by the present application is shown in the figure.

[0025] Fig. 2 A local enlarged view of a brake module in the present application is shown in the figure.

[0026] Fig. 3 A local enlarged view of an adjusting module in the present application is shown in the figure.

[0027] LEGEND:

[0028] 1, oil tank; 101, first liquid storage chamber; 102, second liquid storage chamber; 103, third liquid storage chamber; 2, brake module; 3, adjusting module; 4, brake caliper; 5, liquid reducing one-way valve; 6, brake pedal; 7, first motor; 8, loop isolation valve; 9, pedal simulator; 10, liquid suction one-way valve; 11, first plunger isolation valve; 12, second plunger isolation valve; 13, third plunger isolation valve; 14, second motor; 15, adjusting isolation valve; 16, oil suction valve; 17, plunger pump; 18, pressure increasing valve; 19, pressure reducing valve. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] REFERENCE Figs. 1-3 An embodiment provided by the present application is a brake adjusting system, comprising: an oil tank 1; the oil tank 1 is connected with a brake module 2; an output end of the brake module 2 is connected with an adjusting module 3; an output end of the adjusting module 3 is connected with a brake caliper 4; the output end of the adjusting module 3 is connected with the oil tank 1 through a liquid reducing one-way valve 5, and brake fluid circulation is performed.

[0031] In the embodiment, two liquid reducing one-way valves 5 are designed to replace two accumulators, the design of the ESC in the DPB+ESC is simplified, the hydraulic accumulator is removed, and the liquid discharged after the ABS function is triggered is directly returned to the oil tank 1. When the ABS function is triggered: the pressure increasing valve 18 is closed, the pressure reducing valve 19 is opened, the brake fluid discharged from the pressure reducing valve 19 enters the oil tank 1 through the two liquid reducing one-way valves 5 respectively, the ABS pressure relief action is completed, the pressure relief efficiency of the ABS is increased, and the risk of overlong lock-up time is reduced.

[0032] The brake module 2 functions to respond to the driver's braking request and generate four-way hydraulic liquid to be delivered to four brake calipers 4. The adjustment module 3 functions to adjust the wheel cylinder pressure to be consistent with the system demand pressure. The brake caliper 4 converts the motor thrust of the brake module 2 and the adjustment module 3 into the braking force of the tire.

[0033] The oil tank 1 includes a first liquid storage chamber 101, a second liquid storage chamber 102, and a third liquid storage chamber 103. The first liquid storage chamber 101 and the second liquid storage chamber 102 are connected with the brake pedal 6. The third liquid storage chamber 103 is connected with the first motor 7.

[0034] In the embodiment, the first motor 7 is a hydraulic motor. The brake fluid in the third liquid storage chamber 103 is delivered to the first motor 7 for subsequent braking force control and adjustment.

[0035] The displacement sensor is connected to the brake pedal 6. The output end of the brake pedal 6 is connected in parallel with three circuit isolation valves 8. Any one of the circuit isolation valves 8 is connected with the pedal simulator 9 or the pressure sensor.

[0036] In the embodiment, when the brake pedal 6 is stepped on, the brake fluid in the oil cylinder of the pedal is delivered to the pedal simulator 9, the first motor 7, and the adjustment module 3 through the circuit isolation valve 8, so as to simulate and adjust the braking force of the ABS function during braking.

[0037] The first liquid storage chamber 101 and the second liquid storage chamber 102 are respectively connected with the output ends of the two circuit isolation valves 8 through the liquid suction one-way valves 10. The output ends of the two circuit isolation valves 8 are connected with the adjustment module 3.

[0038] In the embodiment, the brake fluid can be directly output to the output end of the circuit isolation valve 8 through the liquid suction one-way valve 10 and delivered to the adjustment module 3 together, so as to adjust the brake hydraulic pressure.

[0039] The first plunger isolation valve 11 is connected between the third liquid storage chamber 103 and the first motor 7. The output ends of the two circuit isolation valves 8 are respectively connected with the first motor 7 through the second plunger isolation valve 12 and the third plunger isolation valve 13. The voltage sensor, the current sensor, and the pressure sensor are connected to the first motor 7.

[0040] In the embodiment, the pressure of brake fluid into the first motor 7 is controlled by controlling the conduction of the first plunger isolation valve 11, the second plunger isolation valve 12 and the third plunger isolation valve 13, the pressure is monitored by the pressure sensor, and the pressure is converted into the brake force output by the motor, which is controlled and adjusted by monitoring the voltage and current.

[0041] The adjusting module 3 comprises a second motor 14, the second motor 14 is directly connected with an adjusting isolation valve 15 connected with the circuit isolation valve 8, and the adjusting isolation valve 15 is connected with a bypass check valve in parallel.

[0042] In the embodiment, the brake fluid in the oil tank 1 is transported by the second motor 14, the brake fluid is transported to the second motor 14 by the adjusting isolation valve 15, and the adjusting isolation valve 15 controls the opening degree by controlling the current, so as to adjust the outlet pressure of the plunger pump 17.

[0043] The adjusting isolation valve 15 is also connected with an oil suction valve 16 in parallel, one side of any oil suction valve 16 is provided with a pressure sensor, the oil suction valve 16 is connected with the plunger pump 17, and the plunger pump 17 is connected with the second motor 14.

[0044] In the embodiment, the brake fluid is transported into the plunger pump 17 by the oil suction valve 16 for hydraulic liquid circulation, when the second motor 14 rotates to brake, the plunger pump 17 extracts the brake fluid in the brake module 2 and the oil tank 1, and then pumps out into the circuit between the adjusting isolation valve 15 and the pressure increasing valve 18, and is transported back to the inside of the oil tank 1 by the pressure reducing valve 19.

[0045] The output end of the adjusting isolation valve 15 is connected with the pressure increasing valve 18 in parallel, the output end of the pressure increasing valve 18 is connected with the brake caliper 4; the output end of the pressure increasing valve 18 is also connected with the pressure reducing valve 19, one side of the pressure reducing valve 19 is connected with the brake caliper 4, and the other side is connected with the first liquid storage chamber 101 or the second liquid storage chamber 102 through the liquid reducing check valve 5.

[0046] In the embodiment, when the ABS function is triggered: the pressure increasing valve 18 is closed, the pressure reducing valve 19 is opened, the brake fluid discharged from the pressure reducing valve 19 enters the oil tank 1 through the two liquid reducing check valves 5 respectively, and the ABS pressure relief action is completed. The design structure of the system is simplified, the NVH (noise, vibration and sound roughness) noise is reduced, the passenger experience is improved, the product cost is reduced, and the process qualification rate is improved.

[0047] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application has been described in detail, for the skilled in the art, it still can be modified, or for part of the technical features of the equivalent replacement, the spirit and principles of the present application, made any modification, equivalent replacement, improvement, etc., should be included within the scope of the present application.

Claims

1. A brake adjustment system characterized by, The utility model relates to a kind of brake system, including: Oil tank (1); The oil tank (1) is connected with brake module (2); The output of the brake module (2) is connected with adjustment module (3); The output of the adjustment module (3) is connected brake caliper (4); The output of the adjustment module (3) is connected with the oil tank (1) by liquid reducing one-way valve (5), and brake fluid circulation is carried out.

2. The brake adjustment system of claim 1, wherein: The oil tank (1) includes first liquid storage chamber (101), second liquid storage chamber (102) and third liquid storage chamber (103), the first liquid storage chamber (101) and the second liquid storage chamber (102) are connected with brake pedal (6), and the third liquid storage chamber (103) is connected with first motor (7).

3. The brake adjustment system of claim 2, wherein: Displacement sensor is connected on the brake pedal (6), and the output of the brake pedal (6) is connected with three loop isolation valves (8) in parallel, and any loop isolation valve (8) is connected with pedal simulator (9) or pressure sensor.

4. The brake adjustment system of claim 3, wherein: The first liquid storage chamber (101) and the second liquid storage chamber (102) are connected with the output of two loop isolation valves (8) respectively by liquid suction one-way valve (10), and the output of two loop isolation valves (8) is connected with the adjustment module (3).

5. The brake adjustment system of claim 3, wherein: First plunger isolation valve (11) is connected between the third liquid storage chamber (103) and the first motor (7), and the output of two loop isolation valves (8) is connected with the first motor (7) by second plunger isolation valve (12) and third plunger isolation valve (13) respectively.

6. The brake adjustment system of claim 2, wherein: Voltage sensor, current sensor and pressure sensor are connected on the first motor (7).

7. The brake adjustment system of claim 3, wherein: The adjustment module (3) includes second motor (14), and adjustment isolation valve (15) is directly connected with the loop isolation valve (8) of the second motor (14), and bypass one-way valve is connected in parallel with the adjustment isolation valve (15).

8. The brake adjustment system of claim 7, wherein: Oil suction valve (16) is also connected in parallel with the adjustment isolation valve (15), and pressure sensor is arranged on one side of any oil suction valve (16), the oil suction valve (16) is connected with plunger pump (17), and the plunger pump (17) is connected with the second motor (14).

9. The brake adjustment system of claim 7, wherein: Boost valve (18) is connected in parallel with the output of the adjustment isolation valve (15), and the output of the boost valve (18) is connected with the brake caliper (4).

10. The brake adjustment system of claim 9, wherein: Pressure reducing valve (19) is also connected with the output of the boost valve (18), one side of the pressure reducing valve (19) is connected with the brake caliper (4), and the other side is connected with the first liquid storage chamber (101) or the second liquid storage chamber (102) by the liquid reducing one-way valve (5).

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