Valve control to reduce modal frequencies that may cause vibration
First Claim
Patent Images
1. A method for controlling at least a valve that may be deactivated to operate in at least a cylinder of an internal combustion engine, the method comprising:
- operating at least a cylinder in said internal combustion engine;
adjusting the number of valves that operate in a cycle of said cylinder based at least on an operating condition of at least a vehicle chassis system.
2 Assignments
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Accused Products
Abstract
A method to reduce chassis vibration in an engine with valves that may be deactivated. Valves are controlled to avoid exciting modal frequencies of mechanical components and systems.
132 Citations
27 Claims
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1. A method for controlling at least a valve that may be deactivated to operate in at least a cylinder of an internal combustion engine, the method comprising:
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operating at least a cylinder in said internal combustion engine;
adjusting the number of valves that operate in a cycle of said cylinder based at least on an operating condition of at least a vehicle chassis system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 24)
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8. A method for controlling at least an electrically actuated valve to operate in at least a cylinder of an internal combustion engine, the method comprising:
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determining an operating condition of a vehicle chassis system;
evaluating whether to operate said electrically actuated valve in said cylinder based on said operating condition;
operating said electrically actuated valve during a cycle of said cylinder based on said evaluation. - View Dependent Claims (9, 10, 11, 12, 25)
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13. A method for controlling at least an electrically actuated valve to operate in at least a cylinder of an internal combustion engine, the method comprising:
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determining an operating condition of a vehicle mechanical component;
evaluating whether to operate said electrically actuated valve in said cylinder based on said operating condition;
operating said selected electrically actuated valve during a cycle of said cylinder based on said evaluation. - View Dependent Claims (14, 15, 16, 17, 18, 19, 26)
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20. A method for controlling electrically actuated valves in an internal combustion engine, the method comprising:
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determining an operating condition of a vehicle chassis system;
evaluating whether to activate a cylinder based on said operating condition;
activating said cylinder during a cycle of said cylinder based on said evaluation. - View Dependent Claims (21, 22, 27)
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23. A computer readable storage medium having stored data representing instructions executable by a computer to control an internal combustion engine of a vehicle, said storage medium comprising:
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instructions for operating at least a cylinder in said internal combustion engine with a first number of valves active during a cycle of said cylinder at least during a first vehicle chassis system condition; and
instructions for operating at least a cylinder in said internal combustion engine with a second number of valves active during a cycle of said cylinder at least during a second vehicle chassis system condition, with said first number different from said second number, and said first vehicle chassis system condition different from said second vehicle chassis condition.
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Specification