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US 2006/0065221 A1Published application
Control system and method for a valve actuator
AssigneeCaterpillar Inc.
InventorsRobert Kagy, Jason Bloms, Steven Funke
Life of this patent
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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.
Claims2
A method of controlling an engine having a valve actuator, comprising:
- sensing a first parameter indicative of a first temperature of the engine;
- sensing a second parameter indicative of a second temperature of the engine;
- and
- disabling the valve actuator 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.
1 more element
2-30. (canceled)
Dependencies are inferred from the claim text.