Oil pressure control apparatus

Details Oil pressure control apparatus Oil pressure control apparatus

2011-05-31

2011-05-31

Wright, Dirk (Department: 3655)

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Fluid pressure actuator for adjustment of member

Reexamination Certificate

active

07951026

ABSTRACT:
In one embodiment, an oil pressure control apparatus includes a belt-driven continuously variable transmission, a lockup clutch provided in a torque converter, a primary regulator valve that regulates a line oil pressure that becomes a source pressure of oil pressure of various parts, and a lockup control valve that performs switching when controlling engagement/release of the lockup clutch. Control of the primary regulator valve and control of the lockup control valve are performed with a single linear solenoid valve. In this case, control of the primary regulator valve and control of the lockup control valve are performed in different ranges.

REFERENCES:
patent: 6503169 (2003-01-01), Nakano et al.
patent: 2009/0069131 (2009-03-01), Soga
patent: 2009/0264231 (2009-10-01), Ogata et al.
patent: 2010/0151977 (2010-06-01), Ogata
patent: 101 10 144 (2001-09-01), None
patent: 2000-130574 (2000-05-01), None
patent: 2006-316832 (2006-11-01), None
patent: 2007-255663 (2007-10-01), None
German Office Action for corresponding German patent application No. DE 10 2008 046 305.1 dated Jul. 13, 2010, pages.

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