CN1689880A - Deadlock-proof brake pressure PFM controlling apparatus of automobile oil-pressure brake system - Google Patents
Deadlock-proof brake pressure PFM controlling apparatus of automobile oil-pressure brake system Download PDFInfo
- Publication number
- CN1689880A CN1689880A CN 200410034568 CN200410034568A CN1689880A CN 1689880 A CN1689880 A CN 1689880A CN 200410034568 CN200410034568 CN 200410034568 CN 200410034568 A CN200410034568 A CN 200410034568A CN 1689880 A CN1689880 A CN 1689880A
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- pressure
- brake
- brake system
- oil pressure
- deadlock
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Abstract
The high efficiency and low cost pressure controller for regulating brake oil pressure in automobile braking system is installed directly in the pipeline between the general pump and branch pump in oil pressure braking system. It completes the control of oil pressure in the oil pressure braking system by means of one electromechanical pulse frequency modulation mechanism. Compared with traditional ABS pressure controller, the present invention needs no oil pump, energy accumulator and other elements, and thus has low cost and high work efficiency, especially in very low pressure regulating rate.
Description
The present invention relates to a kind of automobile hydraulic brake system brake pressure control apparatus, both the automobile hydraulic brake system was prevented deadlock brake-pressure pulse frequency modulation (PFM) control setup, hereinafter to be referred as the PFM control setup.
The anti-deadlock brake pressure control apparatus of automobile hydraulic brake system can be divided into two big classes, one class is mechanically to regulate the machinery controls of brake strap braking force, another kind of is hydraulic control device with control brake system braking oil pressure, the former makes the brake strap in periodically locking of brake strap-take-off the brake drum reach the purpose that prevents wheel deadlock in the braking procedure by the method with machinery, but because vibration is bigger in the low-response of machinery controls and the control process, therefore the little deficiency that waits of brake-power regulation scope is seldom used in actual brake system.The hydraulic braking mode is the main mode of the anti-deadlock control of present automobile brake, and the valve control system that great majority adopt Hydraulic Pump and control cock to form, valve control system system effectiveness under the lower situation of pressure control rate is very low, the structure relative complex of hydraulic efficiency pressure system in addition, reliability is relatively poor, and fault rate is higher under-40 ℃ of-80 ℃ of serviceability temperatures.
Advantage mechanical, electrical, the liquid each side that this device has absorbed, and, formed the PFM pressure control device with its ingenious combination, the hydraulic part of PFM pressure control device has adopted and the similar structure of master cylinder (wheel cylinder); Mechanics is that cooperation is paid in the slip of moderate velocity; Electric part adopts common electromagnetic actuator and buncher, can guarantee that basically its serviceability temperature scope is identical with the serviceability temperature scope of car load, and the PFM pressure control device is simple in structure, therefore has higher reliability.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Fig. 1 is a PFM control system schematic diagram.
Fig. 2 is a PFM control setup schematic diagram.
The PFM control system is by the pressure that acts in the control system on the control system actuating unit is carried out pulse frequency modulation, thereby reaches the pressure of control action on actuating unit, both, and by the pressure of PFM control setup regulating action on brake cylinder.
The PFM control setup is the core institution of PFM control system, this device is by buncher (1), thrust baring (2), pulse frequency modulation dish (3), angular transducer (4), pulse width compensation slide block mechanism (5), pulse actuator (6), shutoff valve (7), signal conditioning and control unit (8) are formed.When signal conditioning and control unit (8) detect wheel and slippage are arranged or slippage trend is arranged, send the brake pressure signal that reduces brake cylinder, whether shutoff valve (7) closes still late release immediately according to the angular transposition decision that angular transducer (4) provides, control buncher (1) simultaneously by driving impulse modulation dish (3) rotation with the proportional rotating speed of brake pressure signal, impulse modulation dish (3) drive pulse actuator (6) is made the crank motion of corresponding frequencies, realization makes the required pressure of its output to the pulse frequency modulation of pressure oil from shutoff valve (7) to the brake cylinder pipeline.Can change pressure on the brake cylinder by the rotating speed that changes buncher 1, when the rotating speed of buncher (1) has reached minimum speed and pressure on the brake cylinder when still not meeting the requirements of pressure, then need to open shutoff valve (7), the pressure of master cylinder is acted directly on the wheel cylinder.If need the pressure of corrective action on wheel cylinder again, then repeat above step, finish until braking procedure.
Claims (3)
1. automobile hydraulic brake system brake pressure control apparatus, it is characterized in that by buncher (1), drive is bearing in pulse frequency modulation dish (3), angular transducer (4), the pulse width compensation slide block mechanism parts drive pulse actuator (6) such as (5) on the thrust baring (2), and cooperates shutoff valve (7) to realize the pressure controlled electromechanical device of oil pressure.
2. automobile hydraulic brake system brake pressure control apparatus, it is characterized in that driving impulse modulation dish (3) rotation with buncher (1), impulse modulation dish (3) drive pulse width compensation slide block mechanism (5) and pulse actuator (6) are made the reciprocating electromechanical device of corresponding frequencies.
3. automobile hydraulic brake system brake pressure control apparatus, it is characterized in that with machinery or (with) electromagnetism or (with) oil pressure or (with) air pressure mode device that the path of motion of pulse actuator (6) on impulse modulation dish (3) is changed with the velocity of rotation of impulse modulation dish (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410034568 CN1689880A (en) | 2004-04-19 | 2004-04-19 | Deadlock-proof brake pressure PFM controlling apparatus of automobile oil-pressure brake system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410034568 CN1689880A (en) | 2004-04-19 | 2004-04-19 | Deadlock-proof brake pressure PFM controlling apparatus of automobile oil-pressure brake system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1689880A true CN1689880A (en) | 2005-11-02 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410034568 Pending CN1689880A (en) | 2004-04-19 | 2004-04-19 | Deadlock-proof brake pressure PFM controlling apparatus of automobile oil-pressure brake system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1689880A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101754894B (en) * | 2007-07-24 | 2016-02-24 | 罗伯特·博世有限公司 | There is the hydraulic brake system of electron pressure regulatory function |
-
2004
- 2004-04-19 CN CN 200410034568 patent/CN1689880A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101754894B (en) * | 2007-07-24 | 2016-02-24 | 罗伯特·博世有限公司 | There is the hydraulic brake system of electron pressure regulatory function |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Chen Zhili Document name: Notice of publication of application for patent for invention |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |