Internal combustion engine with hydraulic device for...

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

2005-11-15

2005-11-15

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

06964250

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 formed in single-piece construction with an end wall to thereby exhibit a pot-shaped structure. The pot is made without material removal from a sheet metal part and constructed to define with the rotor vanes the pressure chambers. 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: 6412462 (2002-07-01), Lichti et al.
patent: 39 37 644 (1991-05-01), None
patent: 197 40 215 (1998-03-01), None
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patent: 101 49 056 (2002-07-01), None
patent: 101 34 320 (2003-01-01), None
patent: 101 43 862 (2003-03-01), None

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