Valve timing control apparatus of internal combustion engine

Details Valve timing control apparatus of internal combustion engine Valve timing control apparatus of internal combustion engine

2007-02-08

2008-11-04

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

07444971

ABSTRACT:
A valve timing control apparatus is adapted to an exhaust valve side of an internal combustion engine. A vane member is arranged to rotate with a camshaft relative to a timing sprocket member. The vane member is rotated at low speed engine operation dominantly by a camshaft-torque actuation mechanism and at high speed engine operation dominantly by a hydraulic actuation mechanism. The camshaft-torque actuation mechanism is actuated by an alternating torque of the camshaft, whereas the hydraulic actuation mechanism is actuated by a fluid pump. The camshaft-torque actuation mechanism and hydraulic actuation mechanism are controlled independently of each other.

REFERENCES:
patent: 2006/0086332 (2006-04-01), Simpson et al.
patent: 2007/0101962 (2007-05-01), Tsukada et al.
patent: 1 533 484 (2005-05-01), None
patent: 2005-147153 (2005-06-01), None

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