[특허]Electro-hydraulic actuator for motor vehicle brake

[미국특허] Electro-hydraulic actuator for motor vehicle brake 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B60T-008/42
출원번호	US-0270560 (1999-03-16)
발명자 / 주소	Hageman John Benjamin Schenk Donald Edward Shaw Schuyler Scott
출원인 / 주소	Delphi Technologies, Inc.
대리인 / 주소	Sigler
인용정보	피인용 횟수 : 49 인용 특허 : 5

초록 ▼

An electro-hydraulic actuator for a motor vehicle brake-by-wire brake system including a housing, a piston bore in the housing, a T-shaped piston in the piston bore, and an electric motor connected to the piston through a speed reducer. The T-shaped piston includes a disc-shaped head in the piston bore and a tubular stem perpendicular slidable in and out of the piston bore through a sealed guide in the bottom of the piston bore. The top side of the piston head opposite the stem constitutes a large effective area of the piston for rapidly expelling a relatively large volume of fluid from the piston bore in a low pressure interval of operation the actuator. When the fluid pressure in the piston bore exceeds a transition pressure, a transition valve opens a bypass passage to the piston bore behind the piston head so that the same fluid pressure reacts against the bottom side of the piston head around the stem. A high pressure interval of operation of the electro-hydraulic actuator then ensues in which the effective area of the piston is reduced to the area of the cross-sectional profile of the stem.

대표청구항 ▼

[ What is claimed is:] [1.]1. An electro-hydraulic actuator for a motor vehicle brake-by-wire brake system including a fluid pressure operated wheel brake comprising:a housing including a piston bore having a top end and a bottom end,a T-shaped piston including a disc-shaped piston head having top side and a bottom side and a tubular stem perpendicular to the bottom side of the disc-shaped head,a mounting means operative to support the disc-shaped piston head in the piston bore for linear translation with the tubular stem concurrently guided in and out of the bottom end of the piston bore so that the disc-shaped piston head divides the piston bore into a cylindrical primary chamber between the top end of the piston bore and the top side of the disc-shaped piston head and an annular secondary chamber between the bottom end of the piston bore and the bottom side of the disc-shaped piston,a first fluid passage means operative to connect the wheel brake to the primary chamber,a drive means operative to effect linear translation of the piston toward the top end of the piston bore to increase fluid pressure in the primary chamber and in the wheel brake,a second fluid passage means connecting the primary and secondary chambers;means for sensing fluid pressure in the primary chamber; anda valve in the second fluid passage opening the second fluid passage when the sensed fluid pressure in the primary chamber exceeds a transition fluid pressure in the primary chamber to expose the secondary chamber to the fluid pressure in the primary chamber and otherwise closing the second fluid passage, so that in a low pressure interval of operation of the electro-hydraulic actuator below the transition pressure the effective area of the piston is the area of the top side of the disc-shaped piston head and in an ensuing high pressure interval of operation of the electro-hydraulic actuator above the transition pressure the effective area of the piston is the area of the cross-sectional profile of the stem of the piston.

이 특허에 인용된 특허 (5) 인용/피인용 타임라인 분석

Tierney Gordon L. (Washington MI) Hammersmith Robert J. (Shelby Township MI) Paul Ronald (Detroit MI) Parker Donald L. (Middletown OH) Schenk Donald E. (Vandalia OH), Combined traction control and anti-lock braking system.
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Schenk Donald Edward ; Shaw Schuyler Scott, Electro-hydraulic brake apply system with emulator latch.
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Quinn James F. (Troy MI), Integrated anti-lock braking and traction control system.
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Villec George N. (Ann Arbor MI), Integrated anti-lock braking and traction control system.
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Weigert Thomas,DEX ; Oliveri Salvatore,DEX ; Ferger Robert L.,DEX ; Kingston Andrew W.,DEX, Programmable electronic pedal simulator.
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이 특허를 인용한 특허 (49) 인용/피인용 타임라인 분석

Chernoff, Adrian B.; Borroni-Bird, Christopher E.; Shabana, Mohsen D.; Vitale, Robert Louis, Accelerated vehicle development process.
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Krisher, James A., Actuator assembly.
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Feigel, Hans-Jörg; Tarandek, Kristjan, Brake actuating unit.
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Tamura, Jun; Hirabayashi, Tomoki, Brake equipment of vehicle with driver seat whose direction is changeable.
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Reuter,David F.; Kriz, II,Richard J; Shaw,Schuyler Scott, Brake-by-wire braking system with hydraulic fail-safe.
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Chernoff, Adrian B.; White, Tommy E., Chassis frame module and method of use for same.
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Chernoff, Adrian B.; White, Tommy E., Chassis frame packaging cavity loading method.
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Borroni Bird,Christopher E.; Chernoff,Adrian B.; Embach,James T.; Montousse,Julien; Shabana,Mohsen D.; Szczerba,Joseph F., Driver control input device for drive-by-wire system.
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Borroni Bird,Christopher E.; Chernoff,Adrian B.; Embach,James Thomas; Montousse,Julien; Shabana,Mohsen D.; Szczerba,Joseph F., Driver control input device for drive-by-wire system.
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Chernoff,Adrian B.; Szczerba,Joseph F.; Montousse,Julien, Driver control input device for drive-by-wire vehicle.
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Chernoff, Adrian B.; Szczerba, Joseph F.; Montousse, Julien, Driver control input device having opposing movable posts for steering.
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Chernoff, Adrian B.; White, Tommy E., Lower vehicle body structure and method of use therefor.
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Thomas, Richard James, Method and apparatus for control of a motor-driven brake actuator.
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Chernoff,Adrian B.; Borroni Bird,Christopher E.; Shabana,Mohsen D.; Vitale,Robert Louis, Method of designing and manufacturing vehicles.
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Chernoff,Adrian B.; Borroni Bird,Christopher E.; Shabana,Mohsen D.; Vitale,Robert Louis, Methods of conducting vehicle business transactions.
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Chernoff,Adrian B.; Borroni Bird,Christopher E.; Shabana,Mohsen D.; Vitale,Robert Louis, Mobile chassis and interchangeable vehicle body with a heating, ventilation and air conditioning system.
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Chernoff,Adrian B.; Borroni Bird,Christopher E.; Shabana,Mohsen D.; Vitale,Robert Louis, Mobile chassis and interchangeable vehicle body with waste heat rejection system.
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Borroni Bird,Christopher E.; Chernoff,Adrian B.; Shabana,Mohsen D.; Vitale,Robert Louis; White,Tommy E., Modular chassis with simplified body-attachment interface.
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Chernoff, Adrian B.; Szczerba, Joseph F., Pivoting arm driver control input device.
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Chernoff,Adrian B.; White,Tommy E., Pre-engineered frame portion and method of use therefor.
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Chernoff, Adrian B.; Szczerba, Joseph F.; Montousse, Julien, Rotary driver control input device.
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Chernoff,Adrian B.; Borroni Bird,Christopher E.; Shabana,Mohsen D.; Vitale,Robert Louis, Systems packaged within flat vehicle chassis.
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Barron,Luis F.; Carrillo,Conrado, Vehicle actuator with valve seat cushioned by o-ring.
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Chernoff, Adrian B.; Borroni-Bird, Christopher E.; Shabana, Mohsen D.; Ryntz, Edward Frank; Vitale, Robert Louis, Vehicle belly pan.
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Chernoff, Adrian B.; Borroni-Bird, Christopher E.; White, Tommy E.; Shabana, Mohsen D.; Vitale, Robert Louis, Vehicle body configurations.
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Chernoff, Adrian B.; Borroni-Bird, Christopher E.; Shabana, Mohsen D.; Vitale, Robert Louis, Vehicle body manufacturing process.
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Chernoff, Adrian B.; Borroni-Bird, Christopher E.; Shabana, Mohsen D.; Vitale, Robert Louis; Ryntz, Edward Frank, Vehicle body platform.
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Hageman, John B.; Rymoff, Paul, Vehicle brake by wire actuator.
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Szczerba, Joseph F.; Chernoff, Adrian B., Vehicle braking system.
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Chernoff, Adrian B.; Borroni-Bird, Christopher E.; Shabana, Mohsen D.; Vitale, Robert Louis, Vehicle chassis having programmable operating characteristics and method for using same.
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Chernoff, Adrian B.; Borroni-Bird, Christopher E.; Shabana, Mohsen D.; Vitale, Robert Louis, Vehicle chassis having systems responsive to non-mechanical control signals.
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Chernoff, Adrian B.; Borroni-Bird, Christopher E.; Shabana, Mohsen D.; Vitale, Robert Louis; Johnson, Tucker J., Vehicle chassis having systems responsive to non-mechanical control signals.
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A	생활필수품
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A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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[미국특허] Electro-hydraulic actuator for motor vehicle brake 원문보기