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

2006-11-01

2008-10-28

Bui, Bryan (Department: 2863)

Data processing: measuring, calibrating, or testing

Testing system

Of mechanical system

C123S090150, C123S090170

Reexamination Certificate

active

07444254

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 vane member includes a first vane arranged to operate in the camshaft-torque actuation mechanism and a second vane arranged to operate in the hydraulic actuation mechanism. The first vane has a shorter radial length and a smaller pressure-receiving area than the second vane.

REFERENCES:
patent: 5657725 (1997-08-01), Butterfield et al.
patent: 2002/0062803 (2002-05-01), Sato et al.
patent: 2005/0028773 (2005-02-01), Komaki
patent: 2005/0103297 (2005-05-01), Simpson
patent: 1 533 484 (2005-05-01), None
patent: 2005-147153 (2005-06-01), None

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