CN2739053Y - Anti-blocked system of automobile - Google Patents
Anti-blocked system of automobile Download PDFInfo
- Publication number
- CN2739053Y CN2739053Y CN 200420093394 CN200420093394U CN2739053Y CN 2739053 Y CN2739053 Y CN 2739053Y CN 200420093394 CN200420093394 CN 200420093394 CN 200420093394 U CN200420093394 U CN 200420093394U CN 2739053 Y CN2739053 Y CN 2739053Y
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- pressure
- lock braking
- brake equipment
- equipment according
- automobile anti
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Abstract
The utility model relates to an anti-blocked system of automobile, comprising a brake pressure pump, a pressure regulating valve and a sensing module. The sensing module at least receives wheel speed signals and transfers the wheel speed signals to an electronic control unit. The electronic control unit regulates the pressure acting on a hub by regulating and controlling the pressure regulating valve. The utility model is characterized in that the pressure regulating valve comprises two electromagnetic values which control the on-and-off of a pressure channel and an oil storage cavity which absorbs the reverse pressure of the delivery outlet of the pressure regulating valve. One of each of the tow electromagnetic valves controls the on-and-off of the pressure channel leading to the oil storage cavity directly. The two electromagnetic valves comprise an iron core and an annular electromagnetic valve core shaft, and the on-and-off of the electromagnetic valve controls the opening and closing of the pressure channel. The electronic control unit controls the on-and-off of the two electromagnetic valves directly. The utility model has the advantages of acute reaction and fast response, which has a reliable anti-blocked effect when an automobile brakes.
Description
Technical field
The utility model relates to self-propelled vehicle, relates in particular to a kind of automobile anti-lock braking brake equipment.
Background technology
The index of estimating automobile brake perfrmance mainly contains brake efficiency and insensitivity.
Brake efficiency depends primarily on the size of braking force Ft, and braking force is not only relevant with the friction moment of drg, but also is subjected to the restriction of wheel and ground-surface adhesion value:
Ft≤Fμ＝GφB
In the formula, F μ is the adhesive ability between wheel and road surface; G is the vertical load of wheel road pavement; φ B is the vertical adhesion value between tire and road surface.
In the vertical load G of wheel road pavement one timing, the maxim of braking force depends on wheel and ground-surface vertical adhesion value φ B, and φ B is relevant with the ground-surface relatively slip rate S of wheel.Slip rate S is
S＝(V-Vc)/V*100％
In the following formula, V is the vehicle body momentary velocity; Vc is a wheel circumference speed.When wheel lockup, Vc=0, S=100%.
Fig. 1 reflects the relation of vertical adhesion value φ B and slip rate S.
As shown in Figure 1, vertical adhesion value maximum when slip rate is 20% left and right sides, braking force maximum at this moment.When the wheel lockup slip rate was 100%, vertically adhesion value descended on the contrary to some extent, thereby also decline to some extent of braking force, and promptly brake efficiency will descend.
The glancing impact road holding is meant that automobile still can travel by the track of assigned direction at glancing impact, sideslip does not promptly take place, break away and lose steering capability.
Produce to break away during automobile brake and to lose steering capability relevant with the horizontal adhesive ability between wheel and ground, promptly relevant with lateral adhesion coefficient φ s, and lateral adhesion coefficient is relevant with ground-surface slip rate S with wheel.As shown in Figure 1, when slip rate increased, lateral adhesion coefficient reduced, and when S=100%, φ s drops to zero.At this moment, wheel promptly produces under the effect of minimum side direction external force and breaks away.To lose the handling maneuver ability after the wheel flutter locking.Therefore, will cause the glancing impact road holding to degenerate behind the wheel lockup.
From above analysis as can be known, the glancing impact wheel lockup, the directivity of brake efficiency and glancing impact all will degenerate.And if glancing impact is controlled at 15%～20% with wheel slip S, i.e. Sopt place among Fig. 1, this moment is adhesion value φ B maximum vertically, can obtain maximum braking force.Lateral adhesion coefficient φ s also keeps higher value simultaneously, makes automobile have the handling maneuver ability of good sideway skid resistance and glancing impact, thereby obtains best braking effect.
The prior art that solves this automobile emergency glancing impact wheel lockup is as follows:
1, control by the chaufeur experience:
If automobile is not installed ABS (Antilock Braking System, anti-lock braking system in automobiles), experienced driver can utilize pedal brake plate frequent movement to cause the frequent degree of tightness of drg during emergency braking, to obtain easy ABS effect.This operation is too high for the requirement of chaufeur, is difficult to everybody and accomplishes, effect is also undesirable, and reliability is low.
2, adopt multi-form mechanical type ABS device:
Various mechanical type ABS devices all are being difficult to the GB/T 13594-2003 that is up to state standards aspect the various road conditions of adaptation, the safety control effect---and the requirement of " self-propelled vehicle and trailer anti-newspaper deceleration and stopping performance and test method " therefore is eliminated.
Summary of the invention
The automobile anti-lock braking brake equipment that provides a kind of reliability high is provided the purpose of this utility model, to remedy the defective of prior art.
The technical scheme that the utility model adopted is: this automobile anti-lock braking brake equipment, comprise brake-pressure pump, pressure-modulation valve and sensing module, described sensing module receives wheel speed signal at least, and it is transferred to electronic control unit, described electronic control unit regulation and control pressure-modulation valve is with the pressure of regulating action in wheel hub, it is characterized in that: described pressure-modulation valve comprises at least two electromagnetic valves and an oil storage cavity, the break-make of described solenoid control pressure channel, described oil storage cavity receives the cut-back pressure of pressure-modulation valve delivery port;
An electromagnetic valve direct control in described two electromagnetic valves leads to the break-make of the pressure channel of oil storage cavity;
Described two electromagnetic valves comprise the electromagnetic valve mandrel of iron core and the logical type of ring, the break-make of the open and close controlling pressure channel of electromagnetic valve;
The switching of two electromagnetic valves of described electronic control unit direct control;
Described two electromagnetic valves are installed on the valve body, and valve body lower portion is provided with the oil storage cavity;
The input port of described valve body and delivery port are settled the hydraulic fluid port plug screw;
Described hydraulic fluid port plug screw is covered with dust boot;
The external end of described shoe cream room is bolted with the shoe cream room plug screw;
Be provided with packed-piston in the described oil storage cavity, between described piston and the shoe cream room plug screw compression spring be installed;
Described shoe cream room plug screw is covered with dust boot.
The beneficial effects of the utility model are: in the utility model, pressure-modulation valve adopts electromagnetic valve, break-make by the solenoid control pressure channel, and adopt the oil storage cavity to receive the cut-back pressure of pressure-modulation valve delivery port, pressure-modulation valve is regulated and control with electronic control unit ECU (ElectronicControl Unit), in the automobile emergency braking procedure, can carry out Millisecond moment control, and can respond the variation of Millisecond control signal, reflection is sensitive, response is fast, the anti-lock effect in the time of reaching automobile brake reliably.
Description of drawings
Fig. 1 is the scheme drawing that concerns of adhesion value and slip rate;
Fig. 2 is the utility model principle of work scheme drawing;
Fig. 3 is a pressure-modulation valve overall structure scheme drawing in the utility model;
Fig. 4 is a pressure-modulation valve inner structure scheme drawing in the utility model;
Fig. 5 is the utility model electronic control unit basic operation schematic flow sheet;
When Fig. 6 is the pressure period, the electromagnetic valve working state schematic representation;
When Fig. 7 is packing stage, the electromagnetic valve working state schematic representation;
When Fig. 8 is decompression phase, the electromagnetic valve working state schematic representation.
The specific embodiment
With embodiment the utility model is described in further detail with reference to the accompanying drawings below:
According to Fig. 2 and Fig. 3, the utility model comprises brake-pressure pump 1, pressure-modulation valve 2 and sensing module 3, sensing module 3 received signals also transfer to electronic control unit ECU with it, electronic control unit ECU regulation and control pressure-modulation valve 2 is with the pressure of regulating action in wheel hub, because automobile generally adopts back-wheel drive, so the utility model can be used as the single channel anti-lock brake system, wherein, sensing module 3 generally is made up of sensor head and gear ring, be installed on the automobile axle, be used for converting wheel speed to electronic signal and give electronic control unit ECU, pressure-modulation valve 2 is actuating units of this device, it receives the instruction of electronic control unit ECU, and the action by electromagnetic valve realizes that the car side brake brake-pressure changes with the ECU command request; Electronic control unit ECU receives signals such as wheel speed, emergency braking, finish calculating such as wheel speed, the speed of a motor vehicle, wheel slip, finish different coefficient of road adhesion identifications, and calculate optimum braking effect according to the road Identification situation and be transported to pressure-modulation valve 2, the operation of this electronic control unit ECU is through whole emergency braking process, and forming with the anti-lock optimum braking effect is the real-time closed-loop controlled reset of target.In addition, electronic control unit ECU also receives power supply and various breakdown signal, realizes self-diagnostic function, promptly nonserviceables down, stops work of the present utility model, changes the normal brake application state over to, and can light the alarm lamp on the instrument carrier panel.
As shown in Figure 3, pressure-modulation valve 2 comprises two electromagnetic valve 21A, 21B and an oil storage cavity 22, the break-make of electromagnetic valve 21A, 21B control presssure passage, oil storage cavity 22 receives the cut-back pressure of pressure-modulation valve delivery port, as shown in Figure 3, electromagnetic valve 21B direct control leads to the break-make of the pressure channel of oil storage cavity 22, and wherein, electromagnetic valve 21A comprises the electromagnetic valve mandrel 21A1 of movable core 21A2 and the logical type of ring; Electromagnetic valve 21B comprises the electromagnetic valve mandrel 21B1 of secured core 21B3, movable core 21B2 and the logical type of ring, the switching of electronic control unit ECU direct control two electromagnetic valve 21A, 21B.
As shown in Figure 4, two electromagnetic valve 21A, 21B are installed on the valve body 20, and valve body 20 bottoms are provided with oil storage cavity 22, and the input port of valve body 20 and delivery port are settled hydraulic fluid port plug screw 23,24 respectively, and hydraulic fluid port plug screw 23,24 is covered with dust boot 231,241 respectively.
As shown in Figure 4, oil storage cavity 22 outer ends are bolted with shoe cream room plug screw 25, are provided with packed-piston 26 in the oil storage cavity 22, and compression spring 27 is installed between piston 26 and the shoe cream room plug screw 25, and shoe cream room plug screw 25 is covered with dust boot 251.
As shown in Figure 5, reflected the basic operation flow process of electronic control unit ECU, when electronic control unit ECU regulation and control pressure-modulation valve 2:
As shown in Figure 5 and Figure 6, when electromagnetic valve 21A opens, when electromagnetic valve 21B closes, pressure-modulation valve 2 is equivalent to put-through channel, this moment brake-pressure pump 1 the straight-through wheel hub of pressure, be the pressure period this moment.
As Fig. 5 and shown in Figure 7, when electromagnetic valve 21A closes, when electromagnetic valve 21B closes, pressure-modulation valve 2 is cut off, the quiescence before the pressure on the wheel hub is in and cuts off, be packing stage this moment.
As shown in Figure 5 and Figure 8, when electromagnetic valve 21A closes, when electromagnetic valve 21B opens, the pressure on the wheel hub releases oil storage cavity 22 by electromagnetic valve 21B passage, that is, oil storage cavity 22 receives the cut-back pressure of pressure-modulation valve delivery port, this moment be decompression phase.
Like this, reach the anti-lock effect of automobile emergency glancing impact by the utility model.
Claims (10)
1. automobile anti-lock braking brake equipment, comprise brake-pressure pump, pressure-modulation valve and sensing module, described sensing module receives wheel speed signal at least, and it is transferred to electronic control unit, described electronic control unit regulation and control pressure-modulation valve is with the pressure of regulating action in wheel hub, it is characterized in that: described pressure-modulation valve comprises at least two electromagnetic valves and an oil storage cavity, the break-make of described solenoid control pressure channel, described oil storage cavity receives the cut-back pressure of pressure-modulation valve delivery port.
2. automobile anti-lock braking brake equipment according to claim 1 is characterized in that: an electromagnetic valve direct control in described two electromagnetic valves leads to the break-make of the pressure channel of oil storage cavity.
3. automobile anti-lock braking brake equipment according to claim 1 and 2 is characterized in that: described two electromagnetic valves comprise the electromagnetic valve mandrel of iron core and the logical type of ring, the break-make of the open and close controlling pressure channel of electromagnetic valve.
4. automobile anti-lock braking brake equipment according to claim 1 and 2 is characterized in that: the switching of two electromagnetic valves of described electronic control unit direct control.
5. automobile anti-lock braking brake equipment according to claim 1 and 2 is characterized in that: described two electromagnetic valves are installed on the valve body, and valve body lower portion is provided with the oil storage cavity.
6. automobile anti-lock braking brake equipment according to claim 5 is characterized in that: the input port of described valve body and delivery port are settled the hydraulic fluid port plug screw.
7. automobile anti-lock braking brake equipment according to claim 6 is characterized in that: described hydraulic fluid port plug screw is covered with dust boot.
8. automobile anti-lock braking brake equipment according to claim 5 is characterized in that: the external end of described shoe cream room is bolted with the shoe cream room plug screw.
9. automobile anti-lock braking brake equipment according to claim 8 is characterized in that: be provided with packed-piston in the described oil storage cavity, between described piston and the shoe cream room plug screw compression spring be installed.
10. automobile anti-lock braking brake equipment according to claim 8 is characterized in that: described shoe cream room plug screw is covered with dust boot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093394 CN2739053Y (en) | 2004-09-08 | 2004-09-08 | Anti-blocked system of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420093394 CN2739053Y (en) | 2004-09-08 | 2004-09-08 | Anti-blocked system of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2739053Y true CN2739053Y (en) | 2005-11-09 |
Family
ID=35354121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420093394 Expired - Fee Related CN2739053Y (en) | 2004-09-08 | 2004-09-08 | Anti-blocked system of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2739053Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173293A (en) * | 2011-03-18 | 2011-09-07 | 奇瑞汽车股份有限公司 | Control method, device and system of driving torque of electric automobile |
| CN107585150A (en) * | 2016-07-07 | 2018-01-16 | 制动力体有限责任公司 | pressure regulator for ABS system |
| CN107585151A (en) * | 2016-07-07 | 2018-01-16 | 制动力体有限责任公司 | pressure regulator for ABS system |
-
2004
- 2004-09-08 CN CN 200420093394 patent/CN2739053Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102173293A (en) * | 2011-03-18 | 2011-09-07 | 奇瑞汽车股份有限公司 | Control method, device and system of driving torque of electric automobile |
| CN102173293B (en) * | 2011-03-18 | 2013-07-17 | 奇瑞汽车股份有限公司 | Control method, device and system of driving torque of electric automobile |
| CN107585150A (en) * | 2016-07-07 | 2018-01-16 | 制动力体有限责任公司 | pressure regulator for ABS system |
| CN107585151A (en) * | 2016-07-07 | 2018-01-16 | 制动力体有限责任公司 | pressure regulator for ABS system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |