CN111098967A - Single-channel hydraulic braking anti-lock system - Google Patents

Single-channel hydraulic braking anti-lock system Download PDF

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Publication number
CN111098967A
CN111098967A CN202010041891.0A CN202010041891A CN111098967A CN 111098967 A CN111098967 A CN 111098967A CN 202010041891 A CN202010041891 A CN 202010041891A CN 111098967 A CN111098967 A CN 111098967A
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CN
China
Prior art keywords
brake
electromagnetic valve
master cylinder
communicated
brake master
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010041891.0A
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Chinese (zh)
Inventor
吴柳杰
单东升
陈赞
陶加
吴君
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ningbo Saifu Automobile Brake Co ltd
Original Assignee
Ningbo Saifu Automobile Brake Co ltd
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 Ningbo Saifu Automobile Brake Co ltd filed Critical Ningbo Saifu Automobile Brake Co ltd
Priority to CN202010041891.0A priority Critical patent/CN111098967A/en
Publication of CN111098967A publication Critical patent/CN111098967A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B62LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62LBRAKES SPECIALLY ADAPTED FOR CYCLES
    • B62L3/00Brake-actuating mechanisms; Arrangements thereof
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T11/00Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant
    • B60T11/10Transmitting braking action from initiating means to ultimate brake actuator without power assistance or drive or where such assistance or drive is irrelevant transmitting by fluid means, e.g. hydraulic
    • B60T11/16Master control, e.g. master cylinders
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17Using electrical or electronic regulation means to control braking
    • B60T8/1701Braking or traction control means specially adapted for particular types of vehicles
    • B60T8/1706Braking or traction control means specially adapted for particular types of vehicles for single-track vehicles, e.g. motorcycles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17Using electrical or electronic regulation means to control braking
    • B60T8/176Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS
    • B60T8/1761Brake regulation specially adapted to prevent excessive wheel slip during vehicle deceleration, e.g. ABS responsive to wheel or brake dynamics, e.g. wheel slip, wheel acceleration or rate of change of brake fluid pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60TVEHICLE 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
    • B60T8/00Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32Arrangements 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
    • B60T8/34Arrangements 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
    • B60T8/36Arrangements 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 including a pilot valve responding to an electromagnetic force

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Electromagnetism (AREA)
  • Regulating Braking Force (AREA)

Abstract

The invention discloses a single-channel hydraulic anti-lock braking system, which comprises a normally open electromagnetic valve, a brake master cylinder and a vehicle front wheel brake cylinder, wherein the normally open electromagnetic valve is communicated with the brake master cylinder and the vehicle front wheel brake cylinder; the liquid inlet of the first normally closed electromagnetic valve is communicated with the liquid outlet of the normally open electromagnetic valve, and the liquid outlet of the first normally closed electromagnetic valve is communicated with the energy accumulator; the liquid inlet end of the one-way valve is communicated with the energy accumulator, and the liquid outlet end of the one-way valve is communicated with the brake master cylinder; the pressure sensor is connected with an oil outlet of the brake master cylinder; a wheel speed sensor connected to a front wheel of the vehicle; and the control module is respectively connected with the normally open electromagnetic valve, the first normally closed electromagnetic valve, the pressure sensor and the wheel speed sensor. This single channel hydraulic braking anti-lock system reduces manufacturing cost under the prerequisite that satisfies braking anti-lock system basic performance, and the security is high, can protect the driving for riding.

Description

Single-channel hydraulic braking anti-lock system
Technical Field
The invention relates to the technical field of brake systems of two-wheeled vehicles and three-wheeled vehicles, in particular to a single-channel hydraulic brake anti-lock system.
Background
The appearance of vehicles such as automobiles, motorcycles and the like changes the traveling mode of people and shortens the distance between people. The driving safety problem is more and more emphasized by people while bringing convenience to people. Vehicles equipped with an anti-lock braking system (ABS) have been increasingly favored because of their high driving safety.
The ABS structurally comprises an HCU and an ECU, wherein the HCU is an ABS executing mechanism and comprises an electromagnetic valve and a motor, the electromagnetic valve comprises a pressure increasing valve and a pressure reducing valve, and the ECU is an electric control unit and mainly comprises a PCBA, software and a coil. All the structures of the ABS are mutually matched to work, so that the vehicle is prevented from being locked, inclined and fallen. The existing vehicle adopts a double-channel braking system and a four-channel braking system, the manufacturing cost is relatively high, the psychological expectation of consumers is exceeded, the popularization of the existing vehicle on low-end motorcycles, electric two-wheel vehicles and higher bicycles is severely limited, the occupancy rate of the part of vehicles on the market reaches more than 95%, and therefore the double-channel braking system or the four-channel braking system in the prior art cannot well adapt to the market requirement and cannot provide higher safety guarantee for the trip of the consumers.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a single-channel hydraulic braking anti-lock system which has the advantages of low manufacturing cost, high safety and capability of protecting riding and protecting navigation on the premise of meeting the basic performance of the anti-lock braking system.
The technical scheme of the invention is to provide a single-channel hydraulic braking anti-lock system with the following structure: a single-channel hydraulic anti-lock brake system for mounting on a front wheel brake system of a vehicle, comprising
A liquid inlet of the normally open electromagnetic valve is communicated with an oil outlet of the brake master cylinder, and a liquid outlet of the normally open electromagnetic valve is communicated with a brake wheel cylinder of a front wheel of the vehicle;
the liquid inlet of the first normally closed electromagnetic valve is communicated with the liquid outlet of the normally open electromagnetic valve, and the liquid outlet of the first normally closed electromagnetic valve is communicated with the energy accumulator;
the liquid inlet end of the one-way valve is communicated with the energy accumulator, and the liquid outlet end of the one-way valve is communicated with the brake master cylinder and is used for enabling the brake fluid in the energy accumulator to flow into the brake master cylinder when the pressure in the brake master cylinder is reduced;
the pressure sensor is connected with an oil outlet of the brake master cylinder and is used for measuring the pressure of brake fluid in the brake master cylinder;
the wheel speed sensor is connected to the front wheel of the vehicle and used for acquiring the rotating speed of the front wheel of the vehicle;
the control module is respectively connected with the normally open electromagnetic valve, the first normally closed electromagnetic valve, the pressure sensor and the wheel speed sensor and used for controlling the normally open electromagnetic valve and the first normally closed electromagnetic valve to act, receiving a pressure signal of brake fluid in the brake master cylinder measured by the pressure sensor and receiving a rotating speed signal of a front wheel of the vehicle collected by the wheel speed sensor.
As an improvement, the hand feeling simulation device further comprises a hand feeling simulation unit, the hand feeling simulation unit comprises a valve body, a closed inner cavity is arranged in the valve body, a piston is matched in the inner cavity in a sliding mode, the outer side wall of the piston is connected with the inner wall of the inner cavity in a sealing mode, and the piston divides the space of the inner cavity into two independent cavities: the brake master cylinder comprises a first cavity and a second cavity, wherein an oil inlet of the first cavity is communicated with the brake master cylinder, an elastic piece is arranged in the second cavity, one end of the elastic piece abuts against the end face, close to the second cavity, of the piston, and the other end of the elastic piece abuts against the inner bottom wall of the second cavity.
Preferably, the outer circumferential wall of the piston is provided with at least one annular groove, an annular sealing ring made of elastic material is connected in the annular groove, and the outer edge of the annular sealing ring is sealed with the inner wall of the inner cavity.
Preferably, a second normally closed solenoid valve is connected between the oil inlet of the first cavity of the hand feeling simulation unit and the brake master cylinder, and the second normally closed solenoid valve is electrically connected with the control module.
After adopting the structure, compared with the prior art, the single-channel hydraulic braking anti-lock system has the following advantages: compared with a double-channel hydraulic braking anti-lock system and a four-channel hydraulic braking anti-lock system, the single-channel hydraulic braking anti-lock system is simple in structure, low in manufacturing cost, convenient to popularize in a large scale, capable of protecting riding and high in safety; moreover, the single-channel hydraulic braking anti-lock system removes a motor as a power source of the hydraulic braking anti-lock system, so that the noise is low, and the user experience is good; in addition, the hand feeling simulation unit additionally arranged in the single-channel hydraulic braking anti-lock system can greatly weaken the problem of dragging of the return of the braking hand brake after braking is finished, and meanwhile, the braking master cylinder can have enough brake fluid to perform secondary braking. This hydraulic braking anti-lock system of single channel adopts pressure sensor to measure the pressure in the brake master cylinder, and confirm the pressure of brake wheel cylinder by control module according to whole car pressure estimation, through the pressure differential around the normally open solenoid valve, also be the pressure differential of the pressure of brake master cylinder oil-out and brake wheel cylinder internal pressure, adjust the electric current of controlling normally open solenoid valve and first normally closed solenoid valve, thereby control the flow of normally open solenoid valve and first normally closed solenoid valve, make the pressure of brake wheel cylinder can realize linear control, reduce noise and vibration, make the braking more steady reliable, can prolong product life simultaneously.
Drawings
Fig. 1 is a schematic view of a connection structure of a single-channel hydraulic brake anti-lock system according to the present invention.
Fig. 2 is a schematic structural diagram of a hand feeling simulation unit of the single-channel hydraulic brake anti-lock system of the present invention.
As shown in the figure:
1. the brake system comprises a brake master cylinder, 2, a brake wheel cylinder, 3, a normally open electromagnetic valve, 4, a first normally closed electromagnetic valve, 5, an energy accumulator, 6, a one-way valve, 7, a pressure sensor, 8, a hand feeling simulation unit, 800, an inner cavity, 801, a piston, 802, a first cavity, 803, a second cavity, 804, an elastic piece, 805, an annular groove, 806, an annular sealing ring, 807, an oil inlet, 808, a valve body, 9, a second normally closed electromagnetic valve, 10, a control module, 11 and a wheel speed sensor.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
Referring to fig. 1 and 2, the invention discloses a single-channel hydraulic anti-lock braking system, which is used for being installed on a vehicle front wheel braking system and comprises a normally open electromagnetic valve 3, wherein a liquid inlet of the normally open electromagnetic valve is communicated with an oil outlet of a brake master cylinder 1, and a liquid outlet of the normally open electromagnetic valve is communicated with a vehicle front wheel brake cylinder 2; a first normally closed electromagnetic valve 4, the liquid inlet of which is communicated with the liquid outlet of the normally open electromagnetic valve 3, and the liquid outlet of which is communicated with an energy accumulator 5; the liquid inlet end of the one-way valve 6 is communicated with the energy accumulator 5, and the liquid outlet end of the one-way valve is communicated with the brake master cylinder 1, so that when the pressure in the brake master cylinder 1 is reduced, the brake liquid in the energy accumulator 5 flows into the brake master cylinder 1; the pressure sensor 7 is connected with an oil outlet of the brake master cylinder 1 and is used for measuring the pressure of brake fluid in the brake master cylinder 1; the wheel speed sensor 11 is connected to a front wheel of the vehicle and is used for acquiring the rotating speed of the front wheel of the vehicle; and the control module 10 is respectively connected with the normally open electromagnetic valve 3, the first normally closed electromagnetic valve 4, the pressure sensor 7 and the wheel speed sensor 11, and is used for controlling the actions of the normally open electromagnetic valve 3 and the first normally closed electromagnetic valve 4, receiving a pressure signal of brake fluid in the brake master cylinder 1 measured by the pressure sensor 7 and receiving a rotating speed signal of a front wheel of the vehicle collected by the wheel speed sensor 11.
When the vehicle needs to be braked in an emergency, a driver can enable the brake master cylinder 1 to establish brake pressure by poking the brake handle, and brake fluid from the liquid outlet of the brake master cylinder 1 reaches the brake wheel cylinders 2 of the front wheels of the vehicle through the normally open electromagnetic valve 3 to brake the vehicle; the control module 10 calculates the slip rate by collecting the wheel speed signal detected by the wheel speed sensor 11 and estimating the speed of the vehicle in the actual traveling direction through the controller, and when the control module 10 detects that the slip rate reaches 10% -30%, the single-channel hydraulic anti-lock brake system starts to intervene. At the moment, the normally open electromagnetic valve 3 and the first normally closed electromagnetic valve 4 are both in a power-off state, the brake master cylinder 1 continuously transmits brake fluid to the brake wheel cylinder 2, so that the braking force of the brake wheel cylinder 2 is continuously increased, the slip rate is gradually increased in the continuous braking process, the normally open electromagnetic valve 3 is powered on and closed at the moment, the first normally closed electromagnetic valve 4 is powered off, the vehicle is decelerated to the maximum for braking, when the slip rate exceeds the upper limit of 30%, the normally open electromagnetic valve 3 is continuously powered on and closed, the first normally closed electromagnetic valve 4 is powered on and opened, the brake fluid in the brake wheel cylinder 2 flows to the energy accumulator 5 through the first normally closed electromagnetic valve 4 and is stored, the pressure in the brake wheel cylinder 2 is reduced at the moment, the vehicle wheel speed is gradually matched with the vehicle speed, when the control module detects that the slip rate is lower than the lower limit target threshold value of 10%, the first normally closed electromagnetic, and the brake fluid from the fluid outlet of the brake master cylinder 1 reaches the brake wheel cylinders 2 of the front wheels of the vehicle through the normally open electromagnetic valve 3 again, and the vehicle is braked again, so that the cycle is performed until the vehicle braking is finished. After the vehicle braking is finished, the pressure of the master cylinder 1 is reduced to a certain degree, and the brake fluid in the accumulator 5 flows to the master cylinder 1 through the check valve 6, so that the pressure of the master cylinder 1 is maintained in an initial state for the next braking. Therefore, compared with a double-channel hydraulic braking anti-lock system and a four-channel hydraulic braking anti-lock system, the single-channel hydraulic braking anti-lock system is simple in structure and low in manufacturing cost.
The control module 10 of the invention is an ECU, a singlechip or a traveling computer, etc., which is a product in the prior art, and the invention is not described in detail; the wheel speed sensor and the pressure sensor are also products of relatively mature technologies in the prior art, such as a wheel speed sensor of the type IP-3100 manufactured by Shanghai Small wild tester measurement technologies, Inc., and an AST4100 pressure sensor sold by Beijing Rui hong Guangtong science and technology development, Inc.
Referring to fig. 2, an embodiment of the present invention further includes a hand feeling simulation unit 8, the hand feeling simulation unit 8 includes a valve body 808, a closed inner cavity 800 is provided in the valve body 808, a piston 801 is slidably fitted in the inner cavity 800, an outer side wall of the piston 801 is hermetically connected with an inner wall of the inner cavity 800, the piston 801 divides a space of the inner cavity 800 into two independent cavities: the brake master cylinder comprises a first cavity 802 and a second cavity 803, an oil inlet 807 of the first cavity 802 is communicated with the brake master cylinder 1, an elastic piece 804 is arranged in the second cavity 803, one end of the elastic piece 804 abuts against the end face, close to the second cavity 803, of the piston, and the other end of the elastic piece 804 abuts against the inner bottom wall of the second cavity 803. At least one annular groove 805 is formed in the outer circumferential wall of the piston 801, an annular sealing ring 806 made of elastic material is connected in the annular groove 805, and the outer edge of the annular sealing ring 806 is sealed with the inner wall of the inner part 800. A second normally closed solenoid valve 9 is connected between the oil inlet 807 of the first cavity 802 of the hand feeling simulation unit 8 and the brake master cylinder 1, and the second normally closed solenoid valve 9 is electrically connected with the control module 10. When the hand feeling simulation unit 8 brakes the vehicle, the control module controls the second normally closed electromagnetic valve 9 to be powered on and opened, so that the brake fluid at the fluid outlet of the plunger pump of the brake master cylinder 1 flows to the first cavity 802 of the hand feeling simulation unit 8, and in the process, the piston 801 is enabled to do reciprocating free linear motion in the inner cavity 800 under the action of the elastic element 804, so that the brake fluid pressure fluctuation at the fluid outlet of the plunger pump of the brake master cylinder 1 is reduced, and the comfort of a driver for operating the brake handle is high. Or in the process of braking the vehicle, when the pressure of the brake master cylinder 1 acquired by the pressure sensor 7 reaches a set threshold value, namely 40-50 BAR, the second normally closed solenoid valve 9 of the hand feeling simulation unit 8 is powered on and opened, so that the brake fluid of the brake master cylinder 1 flows into the inner cavity 800 of the hand feeling simulation unit 8, and the hand feeling of a driver for operating the brake handle is not too hard. According to the single-channel hydraulic anti-lock brake system, the brake fluid is completely stored in the energy accumulator 5 after the first normally closed electromagnetic valve 4 is electrified and opened, and after braking is finished, the brake fluid in the energy accumulator 5 cannot flow back to the brake master cylinder 1 in time, so that the brake handle has certain dragging feeling, and in addition, the problem of brake handle dragging caused by untimely brake fluid backflow of the brake master cylinder 1 can be effectively solved by introducing the hand feeling simulation unit 8 and matching the piston 801 of the hand feeling simulation unit with the piston diameter of the plunger pump of the brake master cylinder 1 after braking is finished. In addition, the defect that secondary braking cannot be performed or secondary braking pressure is insufficient due to the fact that the brake master cylinder 1 is selected to be small can be overcome by introducing the hand feeling simulation unit 8, the cylinder diameter specification of the brake master cylinder 1 can be selected to be large by introducing the hand feeling simulation unit, and the brake master cylinder with the large cylinder diameter is directly selected, so that the brake force required during manual braking is very large, the brake hand feeling is not good visually, the hand feeling simulation unit is used for just filling the defect that the brake hand feeling is insufficient due to the fact that the required brake force is large, and the comfort of a driver for operating the brake handle is high; that is, under the action of the hand feeling simulation unit 8, a brake master cylinder with a larger cylinder diameter can be configured to improve the braking force of the brake wheel cylinder, and the comfort is high when the driver operates the brake handle. Meanwhile, a pressure sensor 7 is introduced into the brake master cylinder 1 and can measure the pressure of the brake master cylinder 1, then the pressure of the brake wheel cylinder 2 is determined through the estimation of the pressure of the whole vehicle, and the control current of the normally open electromagnetic valve is adjusted through the pressure difference between the front and the back of the normally open electromagnetic valve, so that the pressure of the brake wheel cylinder 2 can be linearly controlled, and the noise and the vibration are reduced. The brake is more stable and reliable, and the service life of the product can be prolonged.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (4)

1. A single channel hydraulic braking anti-lock system is used for being installed on a vehicle front wheel braking system and is characterized in that: it comprises
A liquid inlet of the normally open electromagnetic valve is communicated with an oil outlet of the brake master cylinder, and a liquid outlet of the normally open electromagnetic valve is communicated with a brake wheel cylinder of a front wheel of the vehicle;
the liquid inlet of the first normally closed electromagnetic valve is communicated with the liquid outlet of the normally open electromagnetic valve, and the liquid outlet of the first normally closed electromagnetic valve is communicated with the energy accumulator;
the liquid inlet end of the one-way valve is communicated with the energy accumulator, and the liquid outlet end of the one-way valve is communicated with the brake master cylinder and is used for enabling the brake fluid in the energy accumulator to flow into the brake master cylinder when the pressure in the brake master cylinder is reduced;
the pressure sensor is connected with an oil outlet of the brake master cylinder and is used for measuring the pressure of brake fluid in the brake master cylinder;
the wheel speed sensor is connected to the front wheel of the vehicle and used for acquiring the rotating speed of the front wheel of the vehicle;
the control module is respectively connected with the normally open electromagnetic valve, the first normally closed electromagnetic valve, the pressure sensor and the wheel speed sensor and used for controlling the normally open electromagnetic valve and the first normally closed electromagnetic valve to act, receiving a pressure signal of brake fluid in the brake master cylinder measured by the pressure sensor and receiving a rotating speed signal of a front wheel of the vehicle collected by the wheel speed sensor.
2. The single channel hydraulic brake antilock system of claim 1, wherein: it still includes the analog unit of feeling, the analog unit of feeling include the valve body, the valve body in have a confined inner chamber, the inner chamber in sliding fit piston, and the lateral wall of piston and the inner wall sealing connection of inner chamber, the piston divide into two independent cavitys with the space of inner chamber: the brake master cylinder comprises a first cavity and a second cavity, wherein an oil inlet of the first cavity is communicated with the brake master cylinder, an elastic piece is arranged in the second cavity, one end of the elastic piece abuts against the end face, close to the second cavity, of the piston, and the other end of the elastic piece abuts against the inner bottom wall of the second cavity.
3. The single channel hydraulic brake antilock system of claim 2, wherein: the piston is characterized in that at least one annular groove is formed in the outer circumferential wall of the piston, an annular sealing ring made of elastic materials is connected in the annular groove, and the outer edge of the annular sealing ring is sealed with the inner wall of the inner cavity.
4. The single channel hydraulic brake antilock system of claim 2, wherein: and a second normally closed solenoid valve is connected between the oil inlet of the first cavity of the hand feeling simulation unit and the brake master cylinder, and the second normally closed solenoid valve is electrically connected with the control module.
CN202010041891.0A 2020-01-15 2020-01-15 Single-channel hydraulic braking anti-lock system Pending CN111098967A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010041891.0A CN111098967A (en) 2020-01-15 2020-01-15 Single-channel hydraulic braking anti-lock system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010041891.0A CN111098967A (en) 2020-01-15 2020-01-15 Single-channel hydraulic braking anti-lock system

Publications (1)

Publication Number Publication Date
CN111098967A true CN111098967A (en) 2020-05-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010041891.0A Pending CN111098967A (en) 2020-01-15 2020-01-15 Single-channel hydraulic braking anti-lock system

Country Status (1)

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CN (1) CN111098967A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114932890A (en) * 2022-05-23 2022-08-23 宁波赛福汽车制动有限公司 Miniaturized single-channel ABS hydraulic control module and anti-lock braking system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114932890A (en) * 2022-05-23 2022-08-23 宁波赛福汽车制动有限公司 Miniaturized single-channel ABS hydraulic control module and anti-lock braking system
CN114932890B (en) * 2022-05-23 2023-07-14 宁波赛福汽车制动有限公司 Miniaturized single-channel ABS hydraulic control module and brake anti-lock braking system

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