CN1174145A - Reverse brake system for vehicle - Google Patents
Reverse brake system for vehicle Download PDFInfo
- Publication number
- CN1174145A CN1174145A CN 97115613 CN97115613A CN1174145A CN 1174145 A CN1174145 A CN 1174145A CN 97115613 CN97115613 CN 97115613 CN 97115613 A CN97115613 A CN 97115613A CN 1174145 A CN1174145 A CN 1174145A
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- valve
- brake
- main control
- control circuit
- pressure regulating
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- Regulating Braking Force (AREA)
Abstract
The reverse brake system consists of speed sensor, control switch, control circuit, hydraulic brake regulator, hydraulic speed-varying regulator and accelerator controller. During the emergency braking of vehicle, the said system produces from inside the vehicle reverse driving force which balances the inertial momentum and is in the same direction as the ground friction so that the inertial momentum is overcome and the vechile is stopped in very short distance. Thus traffic accident may be decreased.
Description
The invention belongs to the brake device for car technical field.
Existing various automobile, at glancing impact, the momentum that forms because of inertia all overcomes the resistance acting, although driving engine is flame-out, wheel still will be wiped a segment distance by locking, too many traffic accident also all is to result from the moving distance of this section wiping.Concerning the identical automobile of weight, the glancing impact speed of a motor vehicle is high more, and it is long more to wipe moving distance, and this is that the resistance of generation almost is constant because the friction media of ground-surface friction coefficient and tire is a constant substantially, according to the principle of conservation of momentum on the physics:
1/2MV
2＝FS
M-car mass V-speed of a motor vehicle S-wiping is moving apart from F-resistance
According to this conservation of momentum formula as can be seen, under the situation that car mass and speed are determined, wiping moving distance is inversely proportional to resistance, resistance is more little, it is big more to wipe moving distance, otherwise the moving distance of the big more wiping of resistance is just more little, when resistance is frictional ground force, want the momentum that forms behind the balance braking automobile, only depend on the moving distance of long wiping.
Frictional ground force is a constant to same car substantially, and is outer application force, if can resistance, promptly considers to provide an antagonistic force at automotive interior, that is:
F=f
1+ f
2Draw: 1/2MV
2=(f
1+ f
2) S
f
1-friction force f
2-opposition
Undoubtedly, by this formula, the increasing of resistance, will make automobile wipe moving distance and reduce.
Purpose of the present invention is just in order to strengthen the opposition of automobile at glancing impact, and discloses a kind of reverse brake system for vehicle, provides an antagonistic force at automotive interior, makes automobile wipe moving distance and shortens.
Technical scheme of the present invention is as follows:
Whole reverse brake system for vehicle is interconnected by following array apparatus and combines:
Car speed sensor, system's open-close on-off, main control circuit, brake fluid pressure regulating control, compensator pressure regulating control, accelerator control device.
The car speed sensor of being made up of sensing head and pulse ring is connected with power circuit through the system's open-close on-off on the brake-pedal support.Draining valve in the brake fluid pressure regulating control is connected with the brake cylinder on being connected the wheel brake dish, and inlet valve is connected with compensator pressure regulating control and master brake cylinder respectively.Main control circuit also produces the system's open-close on-off that links with it with brake fluid pressure regulating control, compensator pressure regulating control, accelerator control device with on being arranged on brake-pedal support respectively and is connected.Accelerator control device is made up of directed triple valve, vacuum reservoir, check valve, vacuum release (relief) valve, servomotor and throttle respectively, wherein, directed triple valve, vacuum reservoir, check valve are preface series connection on same oil circuit, servomotor one end is in parallel with directed triple valve, and the other end is connected with throttle.
Between main control circuit and car speed sensor, be provided with the input circuit that an alternating voltage signal that car speed sensor is exported carries out filtering, amplification, shaping.One switch that reverses gear is set in the position of reversing gear of compensator pressure regulating control, this switch that reverses gear is connected with main control circuit, there is a retracing spring retaining bolt termination at hand valve, also is provided with a hydraulic buttery valve by master control circuit controls at the oil inlet of compensator pressure regulating control.Between brake fluid pressure regulating control and main control circuit, also be provided with a signal with main control circuit and amplify, reach the output circuit of stablizing the modulated pressure regulating control.End at main control circuit also is connected with a distributor sensor.
When automobile brake, depress brake pedal, wheel is by locking, master brake cylinder passes to the brake fluid pressure regulating control by working connection with oil pressure, usual open circuited system open-close on-off is closed this moment, the signal that speed of a motor vehicle inductor is sensed conducts to main control circuit, note the flashy speed of a motor vehicle of brake, inlet valve in the main control circuit instruction brake fluid pressure regulating control cuts out, braking force is in packing state, this moment, the compensator pressure regulating control pushed away hand valve on the position of reversing gear, and the switch that reverses gear feeds back signal to main control circuit, and main control circuit conducted signal is again given directed triple valve in the accelerator control device, make and produce the interlock effect in the accelerator control device system to the reverse drive open the throttle wide, strengthen antagonistic force, at this moment, have only the brake fluid pressure regulating control to work, main control circuit instruction draining valve is opened, the pressurize oil circuit is by pressure release, and the wheel pine embraces, and makes the wheel reverse drive be able to possibility.
Because of the backward rotation of wheel, the car speed sensor conducted signal instructs the inlet valve in the brake fluid pressure regulating control to open path for power circuit, power circuit again, and draining valve cuts out, and brake cylinder is the locking brake disc again.
Further set forth content of the present invention below in conjunction with accompanying drawing
Fig. 1 is a system of the present invention connection diagram;
Fig. 2 is a speed of a motor vehicle inductor scheme drawing;
Fig. 3 is a hydraulic efficiency governing change-speed box scheme drawing;
See Fig. 2, vehicle-wheel speed sensor (8) is induction, form by a sensing head (31) and pulse ring (32), sensing head (31) remains static, its structure is made up of permanent magnet (33) magnet coil (34) and magnetic pole (35), pulse ring (32) is the parts of motion, rotates with wheel or transmission shaft.End face at pulse circle (32) has double wedge, when wheel, the pulse circle and the wheel of wheel sensor rotate together, magnetic flow in the magnetic pole (35) changes by the variation of profile of tooth, induction produces an alternating voltage in the magnet coil (34), and the frequency of this alternating voltage is directly proportional with vehicle wheel rotational speed.The alternating voltage that car speed sensor (8) is sensed sensing head (31) is passed to input circuit (30).
See Fig. 1, input circuit (30) can carry out filtering, amplification, shaping to the alternating voltage signal of car speed sensor (8) output, forms stable voltage signal and inputs to main control circuit (1).
System's open-close on-off (19) is arranged on the support of brake pedal (21), the power supply and the incoming signal of able to turn on or off main control circuit (1).After depressing brake pedal (21), start reverse brake system simultaneously and begin job procedure work by main control circuit (1), and on this circuit series connection hand valve switch to open and close this system according to the driving situation.
Main control circuit (1) is made up of integrated circuit block, plays computer, and existing Eltec is unchallenged for finishing by the performed function of main control circuit, and its specific design scheme can be multiple, and carrying out function is exactly received signal, output command.When system's open-close on-off (19) is closed; input circuit (30) is passed to main control circuit (1) with the alternating voltage signal and is carried out storing memory; be in by the locking state at wheel; be that car speed sensor (8) induction is during less than alternating voltage; the mouth of main control circuit (1) is started working by predefined program and is made automobile driving wheel reverse drive and rotation; the 1/2-3/4 (can regulate) of storing memory voltage before reaching braking according to actual conditions; when wheel is about to stop; main control circuit (1) then follow procedure quits work and instructs the locking brake disc; power circuit is provided with automatic safety device; promptly when the program of setting breaks down; can quit work automatically; make master brake cylinder (18) hydraulic pressure can directly act on brake cylinder (7) on the wheel, thereby keep the conventional brake effect of former brake system.
Braking output circuit (2) is that the control signal that main control circuit (1) is exported is amplified, so that brake fluid pressure regulating control (3) is finished the adjusting work of brake fluid pressure.
Brake fluid pressure regulating control (3) is made up of inlet valve (6), draining valve (5) and pressurising pump (4), wherein draining valve (5) and inlet valve (6) are electromagnetic valve, control the keying of its valve plug by main control circuit (1), its function is given brake cylinder (7) for output hydraulic oil brake disc (9) is played brake action; The effect that keeps braking force and release braking force in addition, it is supercharging-pressurize-decompression, pressurized state will carry out glancing impact to wheel for working as, be connected system's open-close on-off (19) closure on brake pedal (21) support, main control circuit (1) is started working, pressure oil in the master brake cylinder (18) is directly implemented the brake pressurizing state by the brake cylinder (7) that inlet valve (6) acts on the brake disc (9) simultaneously, when braking force during greater than the wheel traction, wheel is by locking, main control circuit (1) does not receive the signal of car speed sensor (8), at this moment, main control circuit output braking holding signal is closed the valve plug of inlet valve (6), and draining valve (5) still carries out the task of cutting out valve plug, the oil circuit that this has so thoroughly sealed in the brake cylinder (7) makes it be in packing state.
Decompression state is for after other action of main control circuit (1) is finished, and wheel is in the state of starting to walk backward, should discharge braking force, and main control circuit (1) output depression signal is opened the valve plug of draining valve (5); Inlet valve still is in closed condition, and the pressure oil of brake cylinder (7) is back on the brake piping through draining valve (5), and the work of pressurising pump (4) makes the pressure in the brake cylinder (7) obtain rapidly discharging, and sends pressure oil back to master brake cylinder (18).
See Fig. 3, compensator pressure regulating control (10) is to finish into to reverse gear according to the requirement of plugging to move back the task of neutral gear.When chaufeur unclamps throttle (27), when depressing brake pedal (21), automotive engine is in idling mode, this moment, power-transfer clutch separated automatically, brake disc (9) because of emergency braking by locking, compensator pressure regulating control (10) remains static, have ready conditions enter reverse gear the position (12).Increase by a hydraulic efficiency gear at hand valve (11) afterbody, promptly liquid container (16) and pressure release electromagnetic valve (17) are connected.After brake disc (9) was by locking, brake fluid pressure regulating control (3) was when being in packing state, and the oil pressure of master brake cylinder (18) output does not influence the braking effect of locking brake disc (9).At the beginning glancing impact, in the liquid container (16) of transmission fluid voltage regulator (10), be full of pressure oil, only close because of pressure release electromagnetic valve (17) valve plug of not switching on, pressure oil can't enter in the hydraulic actuating cylinder (36), has only after main control circuit (1) is opened this valve, and pressure oil enters hydraulic actuating cylinder (36) acting, at this moment, the hand valve (11) that promotes on the compensator pressure regulating control (10) enters the position (12) of reversing gear, and the switch that reverses gear (15) closure is given to main control circuit (1) with signal.Before wheel came to a complete stop, pressure release electromagnetic valve (17) lost voltage, and hand valve (11) is pushed the position of getting back to neutral position (13) under the effect of retracing spring (14).At ordinary times, because the valve plug in the pressure release electromagnetic valve (17) has the effect of a spring to be in opening, pressure oil is negotiable.
Accelerator control device mainly is the aperture of control throttle gate (27), it is made up of directed triple valve (23), vacuum reservoir (25), check valve (26), vacuum release (relief) valve (22) servomotor (24), wherein, vacuum release (relief) valve (22), directed triple valve (23), vacuum reservoir (25), check valve (26) are preface series connection on same oil circuit, servomotor (24) one ends are in parallel with directed triple valve (23), and the other end is connected with throttle gate (27).
When depressing brake pedal (21), the vacuum release (relief) valve (22) that is connected on the support of brake pedal (21) is removed vacuum, makes throttle gate (27) be in idle position.Directed triple valve (23) is a position three-way valve of electromagnetic control (ready-made product is arranged on the market), and structure is uncomplicated.When main control circuit (1) sends instruction, directed triple valve (23) cuts off vacuum release (relief) valve (22), make the negative-pressure gas that is connected on the car engine air admittance menifold, enter servomotor (24) after the negative pressure in the motor acquires a certain degree by directed triple valve (22), this servomotor progressively opens out the throttle (27) by the ball chain, to guarantee the power of reverse drive.When main control circuit (1) when sending danger signal, directed triple valve (23) sealing is connected to the path of vacuum reservoir (25), is opened into the path of vacuum release (relief) valve (22), makes vacuum release (relief) valve remove vacuum, allows throttle get back to idling mode again.
In order to guarantee the accuracy of control system, the switch that reverses gear (15), distributor sensor (29) and main control circuit (1) inside are provided with protection system, play the brake safe guarantee effect.If do not form a loop (not by instruction carry out or reverse gear do not enter when reversing gear (12) as the compensator pressure regulating control) when the switch that reverses gear is not closed, or when distributor sensor no-voltage or voltage mal (cross as rotating speed low or flame-out), main control circuit (1) stops all work immediately when not receiving electric signal, make the brake fluid pressure regulating control be in packing state.On the circuit of interior power supply of main control circuit (1) and transmission signals insurance is set all,, cuts off all outputs automatically, keep original conventional brake when input, when output is in abnormal state.
The present invention compared with prior art, in the situation of brake hard, undoubtedly Increased a reaction force to wheel, it is only needed very to stopping fully in braking A short segment distance, the generation that can avoid traffic accident to greatest extent reduces the people The loss of body injures and deaths and property.
Claims (7)
1, reverse brake system for vehicle, for cooperating automobile to overcome the operation system of the reverse drive that moment of inertia applies at glancing impact, it is characterized in that: native system is interconnected by array apparatus down and combines: a. car speed sensor, the open-close on-off c. of b. system main control circuit (computer), d. brake fluid pressure regulating control e. compensator pressure regulating control, f. accelerator control device
2, system according to claim 1 is characterized in that the car speed sensor of being made up of sensing head and pulse ring (8) is connected with main control circuit (1) through the system's open-close on-off (19) on the brake-pedal support; Draining valve (5) in the brake fluid pressure regulating control (3) is connected with the brake cylinder (7) on being connected wheel brake dish (9), and inlet valve (6) is connected with compensator pressure regulating control (10) and master brake cylinder (18) respectively;
Main control circuit (1) also produces the system's open-close on-off (19) that links with it with brake fluid pressure regulating control (3), compensator pressure regulating control (10), throttle gate (27) control setup with on being arranged on brake pedal (21) support respectively and is connected;
Accelerator control device is made up of directed triple valve (23), vacuum reservoir (25), check valve (26), vacuum release (relief) valve (22), servomotor (24) respectively, wherein vacuum release (relief) valve (22), directed triple valve (23), vacuum reservoir (25), check valve (26) are preface series connection on same pipeline, servomotor (24) one ends are in parallel with directed triple valve (23), and the other end is connected with throttle gate (27).
3, system according to claim 1 and 2, it is characterized in that between main control circuit (1) and car speed sensor (8), be provided with the input circuit (30) that an alternating voltage signal that car speed sensor (8) is exported carries out filtering, amplification, shaping, input circuit (30) is connected with system's open-close on-off (19).
4, system according to claim 1 is characterized in that establishing in the position of reversing gear of compensator pressure regulating control (10) switch (15) that reverses gear, and the switch that reverses gear is connected with main control circuit (1), in the retaining bolt termination of hand valve (11) retracing spring (14) is arranged.Oil inlet at compensator pressure regulating control (10) also is provided with a pressure release electromagnetic valve (17) by main control circuit (1) control, and hydraulic buttery valve (17) links to each other with liquid container (16).
5, system according to claim 1, it is characterized in that between brake fluid pressure regulating control (3) and main control circuit (1), being provided with a signal with main control circuit (1) and amplify, reach the output circuit (2) of stablizing control brake hydraulic pressure regulator (3).
6, system according to claim 1 is characterized in that also being connected with a distributor sensor (29) at an end of main control circuit (1).
7, system according to claim 1 is characterized in that the check valve (26) in the accelerator control device is connected with the inlet manifold (28) of automotive engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97115613 CN1174145A (en) | 1997-07-31 | 1997-07-31 | Reverse brake system for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97115613 CN1174145A (en) | 1997-07-31 | 1997-07-31 | Reverse brake system for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1174145A true CN1174145A (en) | 1998-02-25 |
Family
ID=5173324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97115613 Pending CN1174145A (en) | 1997-07-31 | 1997-07-31 | Reverse brake system for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1174145A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367377B (en) * | 2008-10-17 | 2011-06-01 | 黄金运 | Electronic brake system for back of automobile |
| CN104228560A (en) * | 2014-05-12 | 2014-12-24 | 杨富云 | Vehicle braking control method and vehicle braking control device |
-
1997
- 1997-07-31 CN CN 97115613 patent/CN1174145A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367377B (en) * | 2008-10-17 | 2011-06-01 | 黄金运 | Electronic brake system for back of automobile |
| CN104228560A (en) * | 2014-05-12 | 2014-12-24 | 杨富云 | Vehicle braking control method and vehicle braking control device |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |