Control system and method for a valve actuator

Details Control system and method for a valve actuator Control system and method for a valve actuator

2005-12-20

2005-12-20

Denion, Thomas (Department: 3748)

Internal-combustion engines

Poppet valve operating mechanism

With means for varying timing

C123S090170, C123S478000

Reexamination Certificate

active

06976459

ABSTRACT:
A method of controlling an engine having a valve actuation system is provided. The engine is started. A first parameter indicative of a first temperature of the engine is sensed. A second parameter indicative of a second temperature of the engine is sensed. The valve actuation system is disabled to prevent the implementation of a variation on conventional engine valve actuation timing in response to each of the first and second temperatures being below a predetermined value.

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