WO2005063541A1 - Verfahren zur regelung des druckaufbaus in einer elektronisch regelbaren bremsanlage - Google Patents
Verfahren zur regelung des druckaufbaus in einer elektronisch regelbaren bremsanlage Download PDFInfo
- Publication number
- WO2005063541A1 WO2005063541A1 PCT/EP2004/053584 EP2004053584W WO2005063541A1 WO 2005063541 A1 WO2005063541 A1 WO 2005063541A1 EP 2004053584 W EP2004053584 W EP 2004053584W WO 2005063541 A1 WO2005063541 A1 WO 2005063541A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure
- booster
- brake
- point
- determined
- 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
- B60T8/44—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
- B60T8/441—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 using hydraulic boosters
- B60T8/442—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 using hydraulic boosters the booster being a fluid return pump, e.g. in combination with a brake pedal force booster
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
- B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
- B60T13/161—Systems with master cylinder
- B60T13/162—Master cylinder mechanically coupled with booster
-
- 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
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
Definitions
- the invention relates to a method for regulating the pressure build-up in an electronically controllable brake system for preferably motor vehicles, with a master brake cylinder, in particular a tandem master brake cylinder (THZ), a vacuum brake booster, at least one further pressure source for brake force support, preferably a hydraulic pump, which is operated by a Control unit can be controlled and the pressure of which wheel brakes of the vehicle can be applied.
- a master brake cylinder in particular a tandem master brake cylinder (THZ)
- a vacuum brake booster at least one further pressure source for brake force support, preferably a hydraulic pump, which is operated by a Control unit can be controlled and the pressure of which wheel brakes of the vehicle can be applied.
- the invention also relates to a device for regulating the pressure build-up in an electronically controllable brake system for preferably motor vehicles, with a master brake cylinder, a vacuum brake booster, at least one further pressure source having a pump, which can be controlled by a control unit and with its pressure wheel brakes of the vehicle are acted upon.
- the invention also relates to a hydraulic motor vehicle brake system.
- Vacuum brake boosters require a vacuum supply provided by the engine to support the pedal force to be applied by the driver. Depending on the negative pressure supply, a condition is reached with certain pedal forces in which a further increase in the force on the actuating unit is only possible by an increase in the pedal force, since the Vacuum brake booster has reached the maximum possible support force. The state is called the modulation point of the amplifier.
- an additional braking force or an additional braking pressure is the use of an "active" hydraulic braking force support. This is e.g. achieved by means of a hydraulic pump.
- the hydraulic pump also increases the hydraulic pressure in the hydraulic master brake cylinder resulting from the braking force which the driver controls via the brake pedal and which is increased by means of a vacuum brake booster.
- This pump is driven by an electric motor that is controlled by an electronic brake control unit.
- EP 0 754 607 AI discloses a brake system with a brake booster and a hydraulic brake control system for vehicles, which can generate a higher pressure than the input pressure.
- the system is characterized by an evaluation device that detects when the ratio of the auxiliary power to the actuating force falls below (control point of a booster), by a control device that generates a setpoint pressure in the wheel brakes after falling below this ratio by means of the hydraulic brake control system, and by a Desired pressure through which at least partial compensation of the effects of one in relation to the actuating force is available standing assistant.
- valve switching or pump runs only result in a step-wise pressure increase.
- the valve circuits and / or pump runs required for active pressure increase can only be carried out when one evaluable control deviation was formed.
- Actuation speed a shorter time frame is not sufficient to compensate for the increasing pressure in the vacuum chamber due to the reduction in space with the already reduced available vacuum (low engine vacuum). That means the pressure difference across the membrane in the vacuum brake booster is less than the z. B. would be the case with a quasi-stationary gradient. The brake's actuation forces are too high for the driver.
- a master brake cylinder in particular tandem master brake cylinder (THZ)
- a vacuum brake booster at least one further pressure source for brake force support, preferably a hydraulic pump, which can be controlled by a control unit and the pressure of which can be applied to the vehicle's wheel brakes, such that an approach to a point of falling below a predetermined ratio of the auxiliary power to the actuating power (modulation point) of the
- Vacuum brake booster is determined that a pressure gradient in the master brake cylinder (THZ pressure gradient) is determined, and that when a detected approach to the control point of the booster and when a pressure gradient limit value of the determined THZ pressure gradient is exceeded, the further pressure source for brake force support is controlled in order to build up additional brake pressure.
- THZ pressure gradient a pressure gradient in the master brake cylinder
- modulation point is defined here in particular by the brake pressure at which the predetermined one Ratio of the assistant to the operating force is fallen below. This also means a “modulation point brake pressure value”.
- This procedure determines and sets the brake pressure (boost) before a control deviation is formed. If the driver's foot force is increased on the brake pedal (pedal force), the pressure in the system and thus the wheel brake pressure can be increased with a corresponding factor without (noticeable) deceleration. There is no "dull" pedal feeling for the driver. Rather, the comfortable pedal feeling familiar to the driver - as with booster support alone - is almost retained.
- the pressure gradient limit is in a range from 150 bar / s to 250 bar / s, preferably 190 bar / s to 210 bar / s, in particular approximately 200 bar / s.
- the further pressure source for braking power assistance is activated when the exceeding of the pressure gradient limit value has been recognized for a predetermined or determined minimum period of time, which is in a range from 10 ms to 100 ms, preferably 20 ms to 40 ms. lies and in particular is approx. 30 ms.
- a predetermined or calculated, preferably a calculated, control point of the booster is provided a predetermined or determined suitable one
- Downdraft depressurization value is decreased and so a corrected downdraft point, i. H. a corrected one
- Control point brake pressure value which is determined at a
- a pressure in the master brake cylinder (THZ pressure) is determined and used as a guide variable representing a driver specification for a brake pressure control and when the THZ pressure is exceeded via the (pre-shifted) control point or the (according to the invention "advanced") control point brake pressure value and / or the corrected control point of the booster, the further pressure source is controlled in order to build up additional brake pressure.
- the modulation point of the booster for the brake pressure control is assumed to be constant if, in the course of an ongoing increase in the brake pressure, the modulation point (corrected modulation point) reduced by the modulation point reduction value is reached or fallen below.
- control point of the booster is continuously calculated and a detected change in the calculated control point of the booster is also taken into account when determining a predetermined or determined suitable control point reduction value.
- the approach to the modulation point of the booster is determined or estimated in accordance with a stored, calibrated booster characteristic.
- the control unit Determination and control unit has, for determining an approach to a point of falling below a predetermined ratio of the auxiliary force to the actuating force (modulation
- At least one hydraulic pump is preferably used as the pump for the further pressure source, alone or in combination with a hydraulic pressure accumulator.
- the object is also achieved by a hydraulic motor vehicle brake system with an electronic control with a device according to the invention.
- a motor vehicle has a hydraulic brake system with an electronic control with a device according to the invention.
- a determined THZ pressure gradient below the control point of the booster is evaluated by means of a brake control unit. The observation of the gradient preferably begins at a THZ pressure greater than 3 bar. If the gradient exceeds the value of preferably about 200 bar / s, and this is at least for a time of z.
- B. 3 runs of a controller program (controller loop), in this example a time of preferably about 30 ms, the calculated The control point is lowered by a suitable value, advantageously approx. 5 bar, and a corrected control point is determined.
- the value of the reduction is chosen so that when the THZ pressure, which is the reference variable or the value of the driver's specification, is exceeded via the modulation point, a control (full control) corresponding to the driver's brake specification (his "start") is carried out by those responsible for the active body Pump is guaranteed.
- control point or control point brake pressure value is kept constant.
- the non-offset "raw value" of the control point i.e. the control point without the reduction is calculated in the background. If this further determined value of the modulation point increases again by releasing or keeping the brake pedal constant, the corrected, offset-dependent modulation point is also increased further when the actuation point is reached, in order to ensure a harmonious transition when exiting from the regulation of the brake pressure increase by means of the pump.
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Regulating Braking Force (AREA)
- Braking Systems And Boosters (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/584,031 US8038228B2 (en) | 2003-12-24 | 2004-12-17 | Method for controlling the pressure buildup in an electronically controllable brake system |
EP04816346A EP1697191A1 (de) | 2003-12-24 | 2004-12-17 | Verfahren zur regelung des druckaufbaus in einer elektronisch regelbaren bremsanlage |
DE112004002497.8T DE112004002497B4 (de) | 2003-12-24 | 2004-12-17 | Verfahren zur Regelung des Druckaufbaus in einer elektronisch regelbaren Bremsanlage |
JP2006546166A JP2007516897A (ja) | 2003-12-24 | 2004-12-17 | 電子制御可能なブレーキ設備での圧力生成制御方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10361241 | 2003-12-24 | ||
DE10361241.6 | 2003-12-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005063541A1 true WO2005063541A1 (de) | 2005-07-14 |
Family
ID=34716207
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2004/053584 WO2005063541A1 (de) | 2003-12-24 | 2004-12-17 | Verfahren zur regelung des druckaufbaus in einer elektronisch regelbaren bremsanlage |
Country Status (5)
Country | Link |
---|---|
US (1) | US8038228B2 (de) |
EP (1) | EP1697191A1 (de) |
JP (1) | JP2007516897A (de) |
DE (1) | DE112004002497B4 (de) |
WO (1) | WO2005063541A1 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5227293B2 (ja) * | 2009-11-30 | 2013-07-03 | トヨタ自動車株式会社 | 助勢限界認定装置、助勢限界認定方法および助勢限界認定装置を備えた車両用ブレーキシステム |
GB2486669A (en) * | 2010-12-22 | 2012-06-27 | Land Rover Uk Ltd | Brake control to ensure automatic service brake effort does not exceed parking brake effort |
US8641152B2 (en) * | 2011-11-07 | 2014-02-04 | Ford Global Technologies, Llc | Method and system for brake control |
WO2015007728A1 (de) * | 2013-07-16 | 2015-01-22 | Ford Global Technologies, Llc | Verfahren zur steuerung eines bremsdruckverstärkers mit hydraulischer bremsdruckverstärkung sowie bremsdruckverstärkeranordnung |
DE102013218330A1 (de) * | 2013-09-12 | 2015-03-12 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Bremskraftverstärkers, Steuergerät zur Durchführung des Verfahrens und ein den Bremskraftverstärker und das Steuergerät umfassendes Bremssystem |
DE102019206612B3 (de) * | 2019-05-08 | 2020-07-16 | Volkswagen Aktiengesellschaft | Verfahren zur Steuerung eines elektromechanischen Bremssystems sowie elektromechanisches Bremssystem |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19825110C1 (de) * | 1998-06-05 | 2000-02-03 | Lucas Automotive Gmbh | Bremsdruckgebervorrichtung für eine hydraulische Fahrzeugbremsanlage |
DE19925794A1 (de) * | 1999-06-05 | 2000-12-07 | Bosch Gmbh Robert | Bremsdruck-Steuereinrichtung und Verfahren zur Aktivierung und Deaktivierung einer hydraulischen Bremskraftverstärkung |
DE19925783A1 (de) * | 1999-06-05 | 2000-12-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Bremskraftverstärkung bei einem Fahrzeug |
DE10022957A1 (de) * | 2000-05-11 | 2001-11-15 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung wenigstens einer Radbremse eines Fahrzeugs |
DE10156401A1 (de) * | 2001-01-24 | 2002-08-01 | Continental Teves Ag & Co Ohg | Verfahren und Vorrichtung zur Regelung des Druckaufbaus in einer elektronisch regelbaren Bremsanlage |
FR2829451A1 (fr) * | 2001-09-11 | 2003-03-14 | Bosch Gmbh Robert | Procede de calibrage d'un servomoteur d'assistance pneumatique pour un circuit de freinage de vehicule automobile |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19525985A1 (de) * | 1995-07-17 | 1997-01-23 | Bayerische Motoren Werke Ag | Bremsanlage für Kraftfahrzeuge mit einem Bremskraftverstärker |
JP3752756B2 (ja) * | 1996-04-08 | 2006-03-08 | 株式会社デンソー | 車両用ブレーキ装置 |
US5938297A (en) * | 1996-12-13 | 1999-08-17 | General Motors Corporation | Method and device for brake application |
DE19756080A1 (de) * | 1997-12-17 | 1999-07-01 | Bosch Gmbh Robert | Bremsdruck-Steuereinrichtung, insbesondere für ein Straßenfahrzeug |
US6318815B1 (en) * | 1998-01-31 | 2001-11-20 | Continental Teves Ag & Co., Ohg | Braking force boosting device, in particular for automotive vehicles |
EP1474321B1 (de) * | 2002-02-07 | 2008-08-20 | Continental Teves AG & Co. oHG | Verfahren zur ermittlung oder kalibrierung der aussteuerungskennlinie eines unterdruckbremskraftverstärkers |
-
2004
- 2004-12-17 WO PCT/EP2004/053584 patent/WO2005063541A1/de active Application Filing
- 2004-12-17 JP JP2006546166A patent/JP2007516897A/ja active Pending
- 2004-12-17 US US10/584,031 patent/US8038228B2/en active Active
- 2004-12-17 EP EP04816346A patent/EP1697191A1/de not_active Withdrawn
- 2004-12-17 DE DE112004002497.8T patent/DE112004002497B4/de active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19825110C1 (de) * | 1998-06-05 | 2000-02-03 | Lucas Automotive Gmbh | Bremsdruckgebervorrichtung für eine hydraulische Fahrzeugbremsanlage |
DE19925794A1 (de) * | 1999-06-05 | 2000-12-07 | Bosch Gmbh Robert | Bremsdruck-Steuereinrichtung und Verfahren zur Aktivierung und Deaktivierung einer hydraulischen Bremskraftverstärkung |
DE19925783A1 (de) * | 1999-06-05 | 2000-12-07 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Bremskraftverstärkung bei einem Fahrzeug |
DE10022957A1 (de) * | 2000-05-11 | 2001-11-15 | Bosch Gmbh Robert | Verfahren und Vorrichtung zur Steuerung wenigstens einer Radbremse eines Fahrzeugs |
DE10156401A1 (de) * | 2001-01-24 | 2002-08-01 | Continental Teves Ag & Co Ohg | Verfahren und Vorrichtung zur Regelung des Druckaufbaus in einer elektronisch regelbaren Bremsanlage |
FR2829451A1 (fr) * | 2001-09-11 | 2003-03-14 | Bosch Gmbh Robert | Procede de calibrage d'un servomoteur d'assistance pneumatique pour un circuit de freinage de vehicule automobile |
Also Published As
Publication number | Publication date |
---|---|
US8038228B2 (en) | 2011-10-18 |
DE112004002497B4 (de) | 2022-08-25 |
DE112004002497D2 (de) | 2006-12-14 |
EP1697191A1 (de) | 2006-09-06 |
US20070164605A1 (en) | 2007-07-19 |
JP2007516897A (ja) | 2007-06-28 |
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