Engine operation during cylinder deactivation
First Claim
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1. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
- an engine control that generates a load control signal based on one of an activation and a deactivation signal; and
an accessory control that manipulates operation of an accessory driven by said engine based on said load control signal.
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Abstract
An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine system includes an engine control that generates a load control signal based on one of an activation and a deactivation signal. An accessory control manipulates operation of an accessory driven by the engine based on the load control signal.
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Citations
44 Claims
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1. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
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an engine control that generates a load control signal based on one of an activation and a deactivation signal; and
an accessory control that manipulates operation of an accessory driven by said engine based on said load control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
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an alternator that is driven by said engine and that has an adjustable duty cycle; and
a controller that transitions said engine between said activated mode and said deactivated mode, that monitors a velocity of a vehicle driven by said engine and that increases said duty cycle of said alternator when said vehicle decelerates during said deactivated mode. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method for controlling engine operation during activated and deactivated modes in a displacement on demand engine, comprising:
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detecting deceleration of a vehicle driven by said engine; and
increasing a duty cycle of an alternator driven by said engine when said vehicle decelerates during operation of said engine during said deactivated mode. - View Dependent Claims (15, 16, 17, 18, 19)
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20. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
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a pump that is driven by said engine and that has an adjustable displacement; and
a controller that transitions said engine between said activated mode and said deactivated mode and that decreases a displacement of said pump when said engine transitions from said activated mode to said deactivated mode. - View Dependent Claims (21, 22, 23, 24, 25)
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26. A method for controlling engine operation during activated and deactivated modes in a displacement on demand engine, comprising:
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transitioning said engine from said activated mode to said deactivated mode; and
reducing a displacement of a pump driven by said engine. - View Dependent Claims (27, 28, 29, 30, 31, 32)
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33. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
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cylinders that are selectively activated and deactivated; and
a controller that transitions said engine between said activated mode and said deactivated mode, that monitors a velocity of a vehicle driven by said engine and that terminates fuel supply to activated cylinders of said engine when said vehicle decelerates during said deactivated mode. - View Dependent Claims (34, 35, 36, 37, 38)
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39. A method for controlling engine operation during activated and deactivated modes in a displacement on demand engine, comprising:
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detecting deceleration of a vehicle driven by said engine; and
terminating fuel supply to activated cylinders of said engine when said vehicle decelerates during said deactivated mode. - View Dependent Claims (40, 41, 42, 43, 44)
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Specification