Variable camshaft timing system for an internal combustion...

Details Variable camshaft timing system for an internal combustion... Variable camshaft timing system for an internal combustion...

2006-06-30

2009-10-20

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

07603974

ABSTRACT:
A system is disclosed which has a first camshaft coupled to a first gearwheel via a camshaft adjuster, the camshaft adjuster allowing the camshaft to be rotated with respect to the gearwheel, and a second camshaft fixedly coupled to a second gearwheel. The first and second gearwheels are coupled to a crankshaft via a belt or a chain. The camshaft adjuster is fixed to the first camshaft by a first fastener; the second gearwheel is fixed to the second camshaft by a second fastener. The fasteners are arranged at substantially the same depth, as assembled. The fasteners may be screws, adhesives, or welds. The second gearwheel includes: a gearwheel body having teeth, a disk-shaped body, and a spacer between the gearwheel basic body and the disk-shaped body, by which the axial length of the spacer causes the depth of the first and second fasteners to be substantially equivalent.

REFERENCES:
patent: 4858572 (1989-08-01), Shirai et al.
patent: 5293845 (1994-03-01), Yamazaki et al.
patent: 6135077 (2000-10-01), Moriya et al.
patent: 6155220 (2000-12-01), Marriott
patent: 19850947 (2000-05-01), None
patent: 10149759 (2003-05-01), None

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