Valve timing controller

Details Valve timing controller Valve timing controller

2007-05-17

2008-05-27

Eshete, Zelalem (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090150, C123S090310

Reexamination Certificate

active

07377245

ABSTRACT:
A valve timing controller includes an electric motor generating a cogging torque on the motor shaft, an current control means for controlling an electricity supplied to the electric motor, and a phase-changing mechanism varying a relative rotational phase between the crankshaft and the camshaft according to a rotation of the motor shaft. The cogging torque has a peak value which is greater than an absolute value of a cam torque applied to the motor shaft from the camshaft through the phase-changing mechanism.

REFERENCES:
patent: 2003/0005899 (2003-01-01), Scheidt
patent: 2006/0112921 (2006-06-01), Schafer et al.
patent: 41 10 195 (1992-10-01), None
patent: 2005-98142 (2005-04-01), None
patent: 2005-146993 (2005-06-01), None

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