Internal combustion engine with hydraulic device for...

Details Internal combustion engine with hydraulic device for... Internal combustion engine with hydraulic device for...

2007-10-23

2007-10-23

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

11012883

ABSTRACT:
A hydraulic device in an internal combustion engine for adjusting a rotation angle of a camshaft in relation to a crankshaft includes a tubular stator and a rotor connected in fixed rotative engagement with the camshaft and having plural vanes in spaced apart relationship to define pressure chambers on both sides of the vanes. The stator is connected in fixed rotative engagement with a crankshaft-drive timing pulley and constructed to define with the rotor vanes the pressure chambers. The stator is made by a shaping process without material to effect a mass reduction. Pressure medium is supplied to or purged from the pressure chambers to selectively adjust the position of the rotor in relation to the stator and thereby the position of the camshaft in relation to the crankshaft.

REFERENCES:
patent: 6311657 (2001-11-01), Sugawara et al.
patent: 6418897 (2002-07-01), Urban et al.
patent: 6443113 (2002-09-01), Kanada et al.
patent: 6487996 (2002-12-01), Motz et al.
patent: 2001/0027763 (2001-10-01), Simpson et al.
patent: 199 51 390 (2001-05-01), None
patent: 101 48 687 (2002-06-01), None
patent: 101 34 320 (2003-01-01), None

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