Method and device for the hydraulic actuation of a clutch, especially for automobiles
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
F16D-048/02
출원번호
US-0704466
(1996-08-28)
우선권정보
DE-0033420 (1996-08-20)
발명자
/ 주소
Bohme Holger,DEX
Heubner Wilhelm,DEX
Oberlack Norbert,DEX
Peuker Karl,DEX
Sauer Herbert,DEX
출원인 / 주소
Fahrzeugtechnik Ebern GmbH, DEX
대리인 / 주소
McAndrews, Held & Malloy, Ltd.
인용정보
피인용 횟수 :
15인용 특허 :
10
초록
A method and a device for the hydraulic actuation of a clutch operatively connected to a clutch receiver cylinder (6), especially for automobiles, are disclosed, in which, in a servo circuit (S), a servo pressure is generated, which
대표청구항▼
[ We claim:] [1.] An improved method for hydraulically actuating of an automobile clutch so that the clutch may be tuned, in an optimum manner, to at least one selected operating characteristic of the automobile; where the clutch is operatively connected with power circuit, which includes a clutch r
[ We claim:] [1.] An improved method for hydraulically actuating of an automobile clutch so that the clutch may be tuned, in an optimum manner, to at least one selected operating characteristic of the automobile; where the clutch is operatively connected with power circuit, which includes a clutch receiver cylinder that is actuable by the application thereto of a working pressure fluid having a preselected pressure; and where the automobile includes an engine, the method comprising the steps of:providing a source of working pressure fluid having variable pressure, including the preselected pressure, and including generating a servo pressure fluid in a servo circuit where the pressure of the servo pressure fluid is proportional to a preselected operating characteristic of the automobile; andapplying working pressure fluid, which has the preselected pressure, to the clutch receiver cylinder for actuating the clutch receiver cylinder in response to generation of the servo pressure fluid in the servo circuit. [11.] An improved system for the hydraulic actuation of an automobile clutch such that clutch activation may be tuned, in an optimum manner, to at least one selected operating characteristic of the automobile and where the automobile includes an engine, the system comprising:a power circuit;a servo circuit operatively connected with the power circuit;a clutch receiver cylinder that is in the power circuit, that is operatively connected with the clutch, and that is selectively actuable by the application thereto of a working pressure fluid having a preselected pressure;means for providing a source of working pressure fluid having varying pressures, which pressures include the preselected pressure, and including means for generating pressure in a servo pressure fluid in the servo circuit, with the pressure of the servo pressure fluid being proportional to a selected operating characteristic of the automobile; andmeans for applying working pressure fluid, having the preselected pressure, to the clutch receiver cylinder for activation of the clutch receiver cylinder in response to generation of the servo pressure fluid in the servo circuit. The system according to claim 11 which includes a clutch transmitter cylinder that has a servo chamber, a working chamber and a piston reciprocally movable in the working chamber; and wherein the servo pressure fluid is applied at the servo chamber of the clutch transmitter cylinder for the purpose of generating, by loading the piston in the working chamber of the clutch transmitter cylinder, the pressure of the working pressure fluid, which is applied at a clutch receiver cylinder, for the purpose of creating a disengagement force at the clutch, characterized in that the servo circuit includes a proportional valve by which the pressure of the servo pressure fluid in the servo circuit may be adjustable in a preselected manner. The system according to claim 12, characterized in that the hydraulic effective surface of the piston in the clutch transmitter cylinder on the servo chamber side is greater than the hydraulic effective surface of the piston on the working chamber side. The system according to claim 11, characterized in that the servo circuit comprises a proportional valve by which the pressure of the servo pressure fluid in the servo circuit may be adjustable in defined manner. The system according to claim 11 wherein the servo circuit includes a proportional valve that includes a pressure chamber and a valve body, which is adapted to define a valve gap through which servo pressure fluid is forced when the clutch is actuated; and wherein the valve body is adapted to control, in an electromagnetically controlled manner, the valve gap for the purpose of adjusting, in defined manner, the pressure of the servo pressure fluid as pressure head in the pressure chamber of the proportional valve, which pressure chamber is hydraulically connected selectively to the clutch transmitter cylinder or the clutch receiver cylinder. The system according to claim 15, characterized in that the pressure chamber of the proportional valve is also connected to a hydraulic pump so that when the clutch is actuated, the hydraulic pump is adapted to the supply servo pressure fluid to and through the valve gap of the proportional valve. The system according to claim 11, wherein the servo circuit includes a proportional valve characterized in that the proportional valve is prestressed to a blocking-zero-setting; wherein the proportional valve includes a pressure chamber hydraulically connected to a fluid pressure source and selectively to one of the servo chamber of the clutch transmitter cylinder or the clutch receiver cylinder; and wherein the proportional valve includes a valve body which is adapted to define a valve gap that limits, in electromagnetically controllable manner, the valve gap through which servo pressure fluid is forced when the clutch is being engaged so as to adjust the pressure of the servo pressure fluid in defined manner as pressure head in the pressure chamber, and that is prestressed against the pressure in the pressure chamber by a closure spring. The system according to claim 17, characterized in that the proportional valve is a ball seat valve having a spherical valve body that, together with an annular valve seating, defines the valve gap.
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (10)
Bertin Patrice (Mery/Oise FRX) Chazot Frank (Margency FRX) Pankowiak Christian (Saint-Ouen FRX), Actuator for a motor vehicle clutch.
Heubner, Wilhelm; Lenke, Sonja, Hydraulic actuating device for actuation of one or more setting elements in, in particular, a motor vehicle transmission.
Jung,Mario; Schweizer,Alexander; Kuepper,Klaus, Method and device for referencing an incremental travel sensor in an electronically controlled actuation device of a clutch.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.