Variable incremental activation and deactivation of cylinders in a displacement on demand engine
First Claim
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1. A method of regulating displacement in a displacement on demand engine, comprising:
- determining a desired engine displacement;
determining a current engine displacement;
adjusting activation of a first cylinder to partially achieve said desired engine displacement and subsequently adjusting activation of a second cylinder to fully achieve said desired engine displacement from said current engine displacement; and
changing said engine displacement from said current engine displacement to a full engine displacement by adjusting activation of all cylinders when a critical engine fault occurs.
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Abstract
A method of regulating displacement in a displacement on demand engine includes determining a desired engine displacement and determining a current engine displacement. The method further includes adjusting activation of a first cylinder to partially achieve the desired engine displacement and subsequently adjusting activation of a second cylinder to fully achieve the desired engine displacement from the current engine displacement. The method adjusts activation of the cylinders one at a time to reduce vibration in the engine.
78 Citations
18 Claims
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1. A method of regulating displacement in a displacement on demand engine, comprising:
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determining a desired engine displacement; determining a current engine displacement; adjusting activation of a first cylinder to partially achieve said desired engine displacement and subsequently adjusting activation of a second cylinder to fully achieve said desired engine displacement from said current engine displacement; and changing said engine displacement from said current engine displacement to a full engine displacement by adjusting activation of all cylinders when a critical engine fault occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An engine control system that regulates displacement in a displacement on demand engine, comprising:
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a first cylinder; a second cylinder; and a control module that determines a desired engine displacement, that determines a current engine displacement, that adjusts activation of said first cylinder to partially achieve said desired engine displacement and subsequently adjusts activation of said second cylinder to fully achieve said desired engine displacement from said current engine displacement, and that changes said engine displacement from said current engine displacement to a full engine displacement by adjusting activation of all cylinders when a critical engine fault occurs. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method of regulating displacement in a displacement on demand engine, comprising:
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determining a desired engine displacement; determining a current engine displacement; adjusting activation of a second cylinder after adjusting activation of a first cylinder and after a predetermined amount of engine timing pulses to achieve said desired engine displacement from said current engine displacement, and changing said engine displacement from said current engine displacement to a full engine displacement by adjusting activation of all cylinders when a critical engine fault occurs. - View Dependent Claims (17, 18)
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Specification