[특허]Brake pressure control device for a road vehicle

Brake pressure control device for a road vehicle 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	F15B-009/10
출원번호	US-0134839 (1993-10-12)
우선권정보	DE-4234041 (1992-10-09)
발명자 / 주소	Nell Joachim (Ostfildern DEX) Steiner Manfred (Winnenden DEX) Coermann Georg (Stuttgart DEX)
출원인 / 주소	Mercedes-Benz AG (DEX 03)
인용정보	피인용 횟수 : 33 인용 특허 : 0

초록 ▼

A brake pressure control device for a road vehicle with a hydraulic brake system has a pneumatic braking force amplifier which is provided with a switch-over device which switches ever the braking force amplifier to operation with increased amplification factor when the speed with which the driver actuates the brake pedal exceeds a threshold value fs. In the axial force transmission train leading from the brake pedal via a reaction piston of the control part, via a reaction element and via the actuating piston of the braking force amplifier to the main cylinder. A rigid force transmission element is in mechanical parallel connection to a flexible transmission element and associated with which there is a position engaged in the force transmission train as the basic position for the judicious braking operation, and an actuation device, which responds when the threshold value fs of the pedal actuation speed is exceeded and then disengages the distance piece from its supporting position.

대표청구항 ▼

A brake pressure control device for a road vehicle with a hydraulic multi-circuit brake system comprising a main cylinder for generating the brake pressures to be coupled into wheel brakes, a pedal-controlled pneumatic braking force amplifier operatively arranged to actuate the main cylinder, and operatively associated with the braking force amplifier for a switch-over device responding to actuation behavior of a road vehicle driver and configured to cause the braking force amplifier to be automatically switched over from a value of an amplification factor meeting a judicious braking requirement to a higher value of the amplification factor meeting a full braking requirement at least where a speed with which a driver actuates a brake pedal in an introductory phase of a braking action exceeds a threshold value, the braking force amplifier having a vacuum chamber connected to an induction connection of the road vehicle and, opposite the vacuum chamber, an actuation chamber movably bounded by an actuating piston and configured to be acted on by a pressure higher than a pressure prevailing in the vacuum chamber in proportion to a control force exerted on the brake pedal via a control part configured to act as a proportional valve and actuable by the brake pedal, the control part having a valve casing permanently connected to the actuating piston and axially displaceable therewith and a reaction piston forming a valve body and axially displaceable in the valve casing so as to be displaceable relative to the valve casing by actuation of the brake pedal in the direction of a force path marked by the control force and a resulting reaction force on actuation of the main cylinder, the reaction piston being supported by a reaction element, configured to be flexible at least in an axial direction, on a pressure rod for transmitting to the main cylinder an actuation force developed by action of pressure on the actuating piston, which reaction element exerts a reaction force directed in a direction opposite to the control force on the reaction piston and corresponding to a defined fraction of the actuation force acting on the main cylinder given by the reciprocal of the amplification factor of the braking force amplifier effective during the judicious braking operation, wherein in an axial force transmission train, leading from the brake pedal via the reaction piston of the control part, via the reaction element and via the actuating piston of the braking force amplifier to the main cylinder, for the control and actuation forces and for the reaction force resulting from the actuation of the main cylinder, which provides the driver with feedback on the functional condition of the brake system, a rigid force transmission element is provided in mechanical parallel connection to a flexible transmission element, with which force transmission element is associated a position engaged in the force transmission train as a basic position for the judicious braking operation, in which basic position the rigid force transmission element constitutes a distance piece between two force transmission train elements following sequentially in the force path direction, and a switch-over device is provided for the distance piece so as to respond when the threshold value of the pedal actuation speed is exceeded and then disengages the distance piece from a supporting position thereof and thereby frees a displacement path within which the reaction piston of the control part can be displaced against a reduced return force in the sense of a pressure buildup control of the control part,

이 특허를 인용한 특허 (33)

Jeon Jae-Wook,KRX, Automatic emergency brake system for automotive vehicle.
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Yonemura Shuichi,JPX ; Abe Yoichi,JPX ; Sawada Mamoru,JPX, Brake control apparatus for a vehicle.
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Hashimoto Yoshiyuki,JPX, Brake force control apparatus.
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Shimizu Satoshi,JPX, Brake force control apparatus.
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Yoshida Hiroaki,JPX, Brake force control apparatus.
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Yoshida Hiroaki,JPX, Brake force control apparatus.
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Nakanishi Nobuyasu,JPX ; Yamada Akiyoshi,JPX ; Shimizu Satoshi,JPX ; Aizawa Hideyuki,JPX ; Hara Masahiro,JPX, Brake force control apparatus accurately detecting an amount of brake operation intended by a vehicle operator.
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Nakanishi Nobuyasu,JPX ; Yamada Akiyoshi,JPX ; Shimizu Satoshi,JPX ; Aizawa Hideyuki,JPX ; Hara Masahiro,JPX, Brake force control apparatus for properly performing both an ABS function and a BA function.
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Shimizu Satoshi,JPX, Brake force control device.
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Terazawa Tadashi,JPX ; Nishii Michiharu,JPX, Brake pressure control system for a vehicle.
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Hara Masahiro,JPX ; Shimizu Satoshi,JPX, Braking force control apparatus.
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Ohnuma Yutaka,JPX, Braking force control apparatus.
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Shimizu Satoshi,JPX, Braking force control apparatus.
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Shimizu Satoshi,JPX ; Hashimoto Yoshiyuki,JPX, Braking force control apparatus.
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Yoshida Hiroaki,JPX, Braking force control apparatus.
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Koike Shin,JPX ; Nakanishi Nobuyasu,JPX ; Yamada Akiyoshi,JPX ; Shimizu Satoshi,JPX ; Aizawa Hideyuki,JPX ; Hara Masahiro,JPX, Braking force controller.
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Satoshi Shimizu JP; Yoshiyuki Hashimoto JP, Braking force controller.
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Shimizu Satoshi,JPX, Braking force controller.
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Hiroaki Yoshida JP; Satoshi Shimizu JP, Braking force controlling apparatus.
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Sawada Mamoru,JPX ; Yonemura Shuichi,JPX ; Abe Youichi,JPX, Braking system for a vehicle.
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Eckert Alfred,DEX, Braking system for motor vehicles.
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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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Klarer Martin (Kernen DEX) Brugger Franz (Winnenden DEX) Knoff Bernd (Esslingen DEX) Eckl Albrecht (Stuttgart DEX), Method for controlling the initiation sensitivity of an automatic braking procedure.
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Matoy, Eric; Jollerichs, Rainer; Wohltmann, Dirk, Method, system and device for controlling a vehicle brake system.
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Tsubouchi Kaoru,JPX, Negative pressure type booster.
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Weiberle, Reinhard; Jahnz, Timo, Operation of a brake booster as a pedal simulator.
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Thomas Hannus DE; Gerd Puscher DE, Pneumatic brake booster with variable force transmission ratio.
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Berthomieu,Bruno; Bacardit,Juan Simon; Sacristan,Fernando, Pneumatic servo unit, method for making same and device.
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Calvo Martinez, José Manuel; Sparfeld, Jens; Knigge, Detlev; Zinnkann, Ulrich, Vacuum brake servo for a motor vehicle braking system.
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Terazawa,Tadashi; Inoue,Yoji, Vehicle brake hydraulic pressure generator.
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Dieringer Werner (Vallendar DEX) Kohrt Jens-Peter (Koblenz DEX) Mohr Kurt (Halsenbach-Ehr DEX) Heibel Helmut (Moschheim DEX) Michels Erwin (Kail DEX) Renn Hans-Werner (Andernach DEX), Vehicle brake system having an electronically controlled booster.
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Brake pressure control device for a road vehicle 원문보기

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