Variable valve timing controller for an engine

Details Variable valve timing controller for an engine Variable valve timing controller for an engine

2006-06-20

2006-06-20

Wolfe, Jr., Willis R. (Department: 3747)

Internal-combustion engines

Spark ignition timing control

Electronic control

C123S478000, C123S315000, C123S090170

Reexamination Certificate

active

07063068

ABSTRACT:
A variable valve timing controller includes an intake-valve and an exhaust-valve. When the engine is started, the intake-valve and the exhaust-valve are operated in a first mode in which the exhaust-valve is closed before top dead center and then the intake-valve is opened. When a first predetermined condition is met, the intake-valve and the exhaust-valve are operated in a second mode in which the opening time of the intake-valve in the first mode is advanced before top dead center.

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patent: 1164259 (2001-12-01), None
patent: 2001-50040 (2001-02-01), None
patent: 2002-13419 (2002-01-01), None

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