Camshaft adjuster of an internal combustion engine

Details Camshaft adjuster of an internal combustion engine Camshaft adjuster of an internal combustion engine

2007-07-03

2007-07-03

Chang, Ching (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150

Reexamination Certificate

active

11133456

ABSTRACT:
In a camshaft adjuster for an internal combustion engine comprising a control valve having a control piston slidably supported in a valve housing, an operating unit for adjusting the angular position of the camshaft relative to a crankshaft of the engine and a drive unit with an electric motor and a transmission structure for actuating the control piston, the transmission is non-self-locking so that backward movement of the valve piston can be achieved by a backward force on the valve piston.

REFERENCES:
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patent: 6779501 (2004-08-01), Simpson et al.
patent: 7025023 (2006-04-01), Lehmann et al.
patent: 36 19 956 (1987-12-01), None
patent: 43 11 264 (1994-10-01), None
patent: 199 05 234 (2000-08-01), None
patent: 101 20 451 (2001-10-01), None

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