[특허]Road vehicle hydraulic service-brake system and activation process

Road vehicle hydraulic service-brake system and activation process 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60T-008/34
출원번호	US-0140973 (1993-10-25)
우선권정보	DE-4037468 (1990-11-24); JP-0319600 (1990-11-23)
발명자 / 주소	Zimmer Richard (Fellbach DEX) Gautsch Wolfgang (Kngen DEX) Mller Armin (Backnang DEX) Freitag Rainer (Nrtingen DEX)
출원인 / 주소	Mercedes-Benz AG (DEX 03)
인용정보	피인용 횟수 : 40 인용 특허 : 0

초록 ▼

A vehicle is equipped both with an anti-lock system working on the return-flow principle and with a drive-slip control device working on the differential brake principle, in which the return pump is utilized as an auxiliary pressure source for loading the driven vehicle wheels with brake pressure. In an operational situation requiring drive-slip control, a pump working at a low pressure level is actuated, even before the control responds, and conveys brake fluid both into the brake circuit of the driven vehicle wheel and into the brake circuit of the non-driven vehicle wheels, which are shut off from the brake unit of the brake system by, on one hand, an ASR-function control valve and, on the other hand, by an isolating valve. The pre-charge pump of the return pump of the brake circuits of the driven vehicle wheels is used as a low-pressure pump. This pressurization of the brake circuits with a moderate brake pressure causes a compensation of the lifting play and is utilized both for the drive-slip control and for normal braking.

대표청구항 ▼

A brake system for activating a vehicle hydraulic service-brake system, comprising a vehicle anti-lock system operable in accordance with a return-flow principle, a drive-slip control device operable in accordance with a differential brake principle, wheel brakes of driven vehicle wheels constituting a first brake circuit, wheel brakes of non-driven vehicle wheels constituting a second brake circuit, a return pump operatively arranged in the anti-lock system to function as an auxiliary pressure source for a drive-slip control mode and operatively associated with the first brake circuit of the driven vehicle wheels, a pre-charge pump configured to work at a low outlet-pressure level for supplying an inlet of the return pump with brake fluid from a reservoir of the service-brake system, a brake-light switch configured as a position-sensitive switch member to transmit an output signal as the brake pedal of the brake system is shifted out of a basic position, and an electronic control unit configured and operatively connected with the brake system and with vehicle wheel-speed sensors to detect, via output signals from the sensors, occurrence of at least one of the output signal of the brake-light switch and development and then commencement of a vehicle operational situation requiring the drive-slip control mode, and to trigger an output signal activating the pre-charge pump and controlling a drive-slip control-function control valve into a blocking position, at least for a time period sufficient for generating maximum outlet pressure of the pre-charge pump and corresponding at least to a period of time after which, in the event of a brake actuation taking place with average pedal force and speed of pedal adjustment, the wheel brakes are applied, wherein an isolating valve is operatively arranged for shutting off a portion of a main brake-line of the second brake circuit which leads to a branch point thereof, for at least the time period, from a delivery outlet of a brake unit assigned to the second brake circuit, and a delivery outlet of a low pressure pump is connected to the branch point of the second brake circuit, by way of the portion of the main brake-line connecting the branch point to the isolating valve, via a non-return valve which is loaded in an opening direction by a relatively higher pressure at the delivery outlet of the low-pressure pump than in this portion of the main brake-line.

이 특허를 인용한 특허 (40)

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Peter Rieth DE; Jochen Burgdorf DE; Alfred Eckert DE, Automatically actuated braking system.
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Yonemura Shuichi,JPX ; Abe Yoichi,JPX ; Sawada Mamoru,JPX, Brake control apparatus for a vehicle.
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Watanabe Kazuya,JPX, Brake pressure control device for vehicle including brake pressure equalizing device.
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Kunz, Michael; Strengert, Stefan, Brake system for a vehicle and method for operating a brake system of a vehicle.
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Kunz, Michael; Strengert, Stefan, Brake system for a vehicle and method for operating a brake system of a vehicle.
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Yamada Yoshihisa,JPX, Brake system for behavior control of vehicle having pump to start on forecast of execution of control by a plurality of parameters.
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Hara Masahiro,JPX ; Shimizu Satoshi,JPX, Braking force control apparatus.
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Satoshi Shimizu JP; Yoshiyuki Hashimoto JP, Braking force controller.
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Eckert Alfred,DEX, Braking system for motor vehicles.
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Brand, John; Goodermuth, Todd; Peltz, David; Cooper, Jared; Mckay, David; Smith, Eugene; McManus, Brian, Communication system and method for a rail vehicle consist.
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Cooper, Jared; Goodermuth, Todd; Peltz, David; McKay, David; Sherin, Scott C.; Brand, John; Smith, Eugene; Teeter, David; Bryant, Robert; Kraeling, Mark, Communication system and method for a rail vehicle consist.
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Bruex, Thomas; Schmieg, Benno, Control device for a brake system of a vehicle, and method for operating a brake system of a vehicle.
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Cooper, Jared Klineman; Goodermuth, Todd William; Smith, Eugene A., Data communication system and method.
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Cooper, Jared Klineman; Goodermuth, Todd William; Smith, Eugene A.; Kraeling, Mark Bradshaw; Noffsinger, Joseph Forrest; Shaffer, Glenn Robert, Data communication system and method.
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Golden, Samuel William; Cooper, Jared Klineman; Eldredge, David Allen, Data communication system and method.
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Feigel, Hans-Jörg; Dinkel, Dieter, Externally controllable electrohydraulic vehicle brake system.
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Hofmann Dirk,DEX ; Binder Juergen,DEX ; Pfau Martin,DEX ; Schunck Eberhardt,DEX, Hydraulic brake system for a vehicle.
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Steffes Helmut,DEX ; Dehio Gottfried,DEX ; Volz Peter,DEX, Hydraulic brake system with a priming pump for motor vehicles.
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Murayama, Takashi, Hydraulic braking system.
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Takahiro Yamaguchi JP; Toshiya Morikawa JP; Shuichi Yonemura JP; Yoichi Abe JP; Mamoru Sawada JP; Takashi Sato JP; Hideshi Mori JP; Takeshi Fuchida JP, Hydraulic circuit having a rotary type pump and brake apparatus for a vehicle provided with the same.
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Yamaguchi Takahiro,JPX ; Morikawa Toshiya,JPX ; Yonemura Shuichi,JPX ; Abe Yoichi,JPX ; Sawada Mamoru,JPX, Hydraulic circuit having a rotary type pump and brake apparatus for a vehicle provided with the same.
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Okazaki Koji,JPX ; Kiso Takahiro,JPX ; Yogo Kazutoshi,JPX ; Ohno Sadayuki,JPX ; Goshima Takahiro,JPX ; Morikawa Toshiya,JPX ; Shinkai Hiroyuki,JPX, Hydraulic structure of automatic brake control system.
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Domsalla, Eberhard; Gastauer, Heiko; Greiff, Uwe; Hartmann, Ralf; Heise, Andreas; Hinz, Axel; Hoffmann, Jan; Wolf, Hans-Peter, Hydraulic trailer brake system.
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Erban Andreas,DEX ; Weiss Karl-Josef,DEX ; Gerdes Manfred,DEX, Method and device for determining a value representing the system pressure in a brake circuit.
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Smith, Eugene A.; Goodermuth, Todd, Method and system for rail vehicle control.
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Baumgartner, Johann; Geissler, Steffen; Pericevic, Aleksandar; Trimpe, Robert; Gruber, Robert, Method for actuating a wet multiple disc brake and a wet multiple disc brake.
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Cooper, Jared Klineman; Foy, Robert James; Peltz, David Michael; Smith, Eugene; Kellner, Steven Andrew; Schroeck, Brian William; Gilbertson, Keith; Noffsinger, Joseph Forrest; Daum, Wolfgang, Methods and systems for data communications.
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Rajendran, Santhanakrishnan; Vihol, Praful Babuji; Pati, Dibyajyoti; Cooper, Jared Klineman; Foy, Robert James; Peltz, David Michael; Smith, Eugene; Kellner, Steven Andrew; Schroeck, Brian William; Gilbertson, Keith; Noffsinger, Joseph Forrest; Daum, Wolfgang, Methods and systems for data communications.
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Lenz,Thomas; Möllenhoff,Jörg; Struwe,Otmar, Process for automatic drive slip control (ASR).
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Johnston Gary L. (Pleasant Hill OH) Zehnder ; II James W. (Huber Heights OH) Kruckemeyer William C. (Beaver Creek OH) Oliver Michael L. (Xenia OH) Longhouse Richard E. (Dayton OH), Proportional braking system with dual poppet valves.
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Daum, Wolfgang; Noffsinger, Joseph; Brand, John; Cooper, Jared Klineman; Goodermuth, Todd; Kraeling, Mark, Rail vehicle control communication system and method for communicating with a rail vehicle.
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Albert Timothy Jay ; Goodzey Gregory Paul, Secondary braking control.
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Kraeling, Mark Bradshaw; Cooper, Jared; Goodermuth, Todd, System and method for communicating data in a locomotive consist or other vehicle consist.
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Goodermuth, Todd; Peltz, David, System and method for communicating data in a train having one or more locomotive consists.
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Cooper, Jared Klineman; Goodermuth, Todd William; Smith, Eugene A., System and method for communicating data in locomotive consist or other vehicle consist.
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Keitel, Todd Allen, Systems and methods for implementing control logic.
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Linden Christoph,DEX, Vehicle brake system of a motor vehicle.
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Road vehicle hydraulic service-brake system and activation process 원문보기

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