Invention Grant
US07771317B2 Control valve assembly for controlling a starting clutch of an automatic transmission
有权
用于控制自动变速器的起动离合器的控制阀组件
- Patent Title: Control valve assembly for controlling a starting clutch of an automatic transmission
- Patent Title (中): 用于控制自动变速器的起动离合器的控制阀组件
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Application No.: US12088880Application Date: 2006-10-13
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Publication No.: US07771317B2Publication Date: 2010-08-10
- Inventor: Georg Gierer , Thilo Schmidt , Anton Fritzer , Markus Herrmann
- Applicant: Georg Gierer , Thilo Schmidt , Anton Fritzer , Markus Herrmann
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Davis & Bujold, P.L.L.C.
- Priority: DE102005050493 20051021
- International Application: PCT/EP2006/009904 WO 20061013
- International Announcement: WO2007/045401 WO 20070426
- Main IPC: B60W10/02
- IPC: B60W10/02 ; F16H61/26

Abstract:
A valve assembly for controlling actuation of at least one starting clutch of an automatic transmission includes at least one clutch control valve through which a supply pressure is directed to a clutch actuation device, a pressure control valve controlled by a control device to supply at least one control valve of the valve assembly with a pilot pressure, a self-maintained hydraulic unit to maintain operation of an engaged starting clutch upon failure of the control device and loss of the pilot pressure. The valve assembly has a self-maintained valve and an activation valve. The self-maintained valve directs an activation pressure or control pressure, depending on the engine or transmission speed, to the activation valve. The actuation valve directs the activation to at least one clutch-regulating valve. The valve assembly also controls actuation or de-activation of the emergency operation function with a clutch actuation pressure.
Public/Granted literature
- US20080234099A1 Control Valve Assembly for Controlling a Starting Clutch of an Automatic Transmission Public/Granted day:2008-09-25
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