WO2005066004A1 - Drucksteuergerät - Google Patents
Drucksteuergerät Download PDFInfo
- Publication number
- WO2005066004A1 WO2005066004A1 PCT/EP2005/050004 EP2005050004W WO2005066004A1 WO 2005066004 A1 WO2005066004 A1 WO 2005066004A1 EP 2005050004 W EP2005050004 W EP 2005050004W WO 2005066004 A1 WO2005066004 A1 WO 2005066004A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- valve
- brake
- inlet
- wheel brake
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements 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
- B60T8/34—Arrangements 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
- B60T8/36—Arrangements 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements 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
- B60T8/34—Arrangements 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements 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
- B60T8/34—Arrangements 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
- B60T8/42—Arrangements 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 having expanding chambers for controlling pressure, i.e. closed systems
- B60T8/4275—Pump-back systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements 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
- B60T8/34—Arrangements 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
- B60T8/44—Arrangements 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 co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems
- B60T8/445—Arrangements 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 co-operating with a power-assist booster means associated with a master cylinder for controlling the release and reapplication of brake pressure through an interaction with the power assist device, i.e. open systems replenishing the released brake fluid volume into the brake piping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements 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
- B60T8/34—Arrangements 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
- B60T8/50—Arrangements 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 having means for controlling the rate at which pressure is reapplied to or released from the brake
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements 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
- B60T8/34—Arrangements 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
- B60T8/50—Arrangements 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 having means for controlling the rate at which pressure is reapplied to or released from the brake
- B60T8/5006—Pressure reapplication by pulsing of valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE 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
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements 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
- B60T8/34—Arrangements 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
- B60T8/50—Arrangements 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 having means for controlling the rate at which pressure is reapplied to or released from the brake
- B60T8/5075—Pressure release by pulsing of valves
Definitions
- the invention relates to a pressure control device for varying the brake pressure in at least one wheel brake of a vehicle according to the preamble of patent claim 1.
- Such a pressure control device for varying the brake pressure in a plurality of wheel brakes of a vehicle is already known from DE 198 41 334 A1, which has a plurality of inlet and outlet valves for varying the brake pressure in a control unit block.
- the inlet valves In their basic position, the inlet valves establish a connection between a master cylinder (pressure medium source) and the wheel brakes via several brake pressure channels in the control unit block. Between the inlet valves and the wheel brakes, several return channels are connected to the brake pressure channels, in which the outlet valves closed in the basic position are used.
- the return channels are connected via the outlet valves to a pair of low-pressure accumulators, which in a pressure reduction phase absorb the excess pressure medium from the wheel brakes via the opened outlet valves and feed them to a downstream pump, which feeds the pressure medium drained from the wheel brakes back upstream of the inlet valves to the brake pressure channels.
- a noise-reduced pressure control device whose noises initiated by the actuation of the inlet valves can be completely eliminated by the skillful functional interaction of the inlet and outlet valves of each wheel brake.
- FIG. 1 shows the basic structure for a pressure control device which is arranged between a pressure medium source and a wheel brake
- FIG. 1 illustrates the basic structure of a pressure control device for varying the brake pressure in a wheel brake 3 of a vehicle and for varying the brake pressure has an inlet and outlet valve 1, 2 in a control unit block 9.
- the inlet valve 1 establishes a connection between a pressure medium source 8 and the wheel brake 3 via a brake pressure channel 4 in the control unit block 9.
- a return channel 5 is connected to the brake pressure channel 4, in which the outlet valve 2, which is closed in the basic position, is inserted.
- the return channel 5 is connected via the outlet valve 2, for example, to a low-pressure accumulator 6 used in the control unit block 9, which in a pressure reduction phase receives the excess pressure medium from the wheel brake 3 via the opened outlet valve 2 and supplies the pressure medium to a downstream pump 7, which is integrated in the control unit block 9 which, according to the return flow principle, feeds the pressure medium discharged from the wheel brake 3 back upstream to the inlet valve 1 to the brake pressure channel 4.
- Both the inlet and the outlet valve 1, 2 are preferably designed as 2/2-way seat valves, which can be actuated electromagnetically in the present exemplary embodiment.
- Control electronics 10 required for this purpose are preferably arranged on the control unit block 9 and are electrically connected to the inlet and outlet valves 1, 2.
- the invention provides that in a brake pressure control phase in which the brake pressure in the Wheel brake 3 is to be increased, both the inlet and the outlet valve 1, 2 are open, the outlet valve 2 being opened only for a small period of time t during the opening period of the inlet valve 1, so that the desired increase in brake pressure in the wheel brake 3 remains guaranteed.
- the opening time ta of the exhaust valve 2 is basically based on the opening time te of the intake valve 1, the opening time ta of the exhaust valve 2 corresponding to the opening time te of the intake valve 1 in order to effectively avoid a noise pulse initiated by the opening stroke of the intake valve 1.
- the time period t in which, in addition to inlet valve 1, outlet valve 2 is also open, is limited to a few milliseconds (maximum 4 ms).
- the opening duration of the inlet valve 1 is approximately increased by the period 't of the exhaust valve 2.
- Figures 2a to 2c graphically represent the previously explained switching conditions of the intake and exhaust valve in an X / Y coordinate system.
- the opening time is plotted along the abscissa and the respective switching position S1, S2 of the inlet and outlet valve 1, 2 is plotted over the ordinate, in which the inlet and outlet valve 1, 2 is either open or closed.
- FIG. 2a shows a square-wave signal for a valve switching position in which the binary switching inlet valve 1 for building up brake pressure mechanically, preferably by a spring force. is open for a defined period
- Fig. 2b shows a square wave signal for a valve switching position in which the binary switching exhaust valve 2 simultaneously with the excitation of the intake valve 1 (see Fig. 2a). for a certain period of time t is preferably excited electromagnetically, piezoelectrically or the like, in order to remain in an open switch position for a period of time t which is considerably smaller than the duration of opening of the inlet valve 1 (not shown to scale),
- the noises previously initiated due to the pressurization of the wheel brake 3 during a brake pressure control phase can be avoided in an astonishingly simple manner, since the brake fluid column, which is normally compressed between the wheel brake 3, the outlet valve 2 and the master cylinder (pressure medium source 8), by opening of the exhaust valve 2 can partially expand in the direction of the empty low-pressure accumulator 6 during a slip-controlled pressure build-up phase.
- the pressure build-up noises which so far have arisen each time the inlet valve 1 is opened due to the propagation of the pressure build-up impulse on the incompressibly biased liquid column in the brake pressure channel 4, can thus be effectively prevented.
- the invention is not limited to brake systems and pressure control devices which work according to the return conveyor system.
- the invention can also be used for so-called open or semi-open hydraulic circuits, in which the return line downstream of the outlet valve is connected directly to an open reservoir, which is generally connected to the master cylinder.
- control unit block 10 control electronics
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/584,793 US20090102278A1 (en) | 2004-01-08 | 2005-01-03 | Pressure control device |
DE502005005884T DE502005005884D1 (de) | 2004-01-08 | 2005-01-03 | Drucksteuergerät |
JP2006548293A JP4805846B2 (ja) | 2004-01-08 | 2005-01-03 | 圧力制御装置 |
EP05701420A EP1713675B1 (de) | 2004-01-08 | 2005-01-03 | Drucksteuergerät |
KR1020067013578A KR101168851B1 (ko) | 2004-01-08 | 2005-01-03 | 압력제어장치 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004001326 | 2004-01-08 | ||
DE102004001326.8 | 2004-01-08 | ||
DE102004042647.3 | 2004-09-03 | ||
DE102004042647A DE102004042647A1 (de) | 2004-01-08 | 2004-09-03 | Drucksteuergerät |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005066004A1 true WO2005066004A1 (de) | 2005-07-21 |
Family
ID=34751374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/050004 WO2005066004A1 (de) | 2004-01-08 | 2005-01-03 | Drucksteuergerät |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1713675B1 (de) |
KR (1) | KR101168851B1 (de) |
WO (1) | WO2005066004A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007253692A (ja) * | 2006-03-22 | 2007-10-04 | Nissin Kogyo Co Ltd | 車両用ブレーキ液圧制御装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3742172A1 (de) * | 1987-12-12 | 1989-06-22 | Teves Gmbh Alfred | Verfahren zum steuern einer blockiergeschuetzten hydraulischen bremsanlage |
DE4121470A1 (de) * | 1990-07-03 | 1992-01-09 | Nippon Denso Co | Bremsdruck-steuervorrichtung fuer kraftfahrzeuge |
DE19841334A1 (de) * | 1998-03-31 | 1999-10-07 | Itt Mfg Enterprises Inc | Drucksensorbaugruppe |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6382738B1 (en) | 1998-03-31 | 2002-05-07 | Continental Teves Ag & Co., Ohg | Pressure sensor assembly |
-
2005
- 2005-01-03 KR KR1020067013578A patent/KR101168851B1/ko not_active IP Right Cessation
- 2005-01-03 WO PCT/EP2005/050004 patent/WO2005066004A1/de active Application Filing
- 2005-01-03 EP EP05701420A patent/EP1713675B1/de not_active Ceased
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3742172A1 (de) * | 1987-12-12 | 1989-06-22 | Teves Gmbh Alfred | Verfahren zum steuern einer blockiergeschuetzten hydraulischen bremsanlage |
DE4121470A1 (de) * | 1990-07-03 | 1992-01-09 | Nippon Denso Co | Bremsdruck-steuervorrichtung fuer kraftfahrzeuge |
DE19841334A1 (de) * | 1998-03-31 | 1999-10-07 | Itt Mfg Enterprises Inc | Drucksensorbaugruppe |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007253692A (ja) * | 2006-03-22 | 2007-10-04 | Nissin Kogyo Co Ltd | 車両用ブレーキ液圧制御装置 |
Also Published As
Publication number | Publication date |
---|---|
KR20070005556A (ko) | 2007-01-10 |
KR101168851B1 (ko) | 2012-07-26 |
EP1713675A1 (de) | 2006-10-25 |
EP1713675B1 (de) | 2008-11-05 |
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