CYLINDER ACTIVATION/DEACTIVATION SEQUENCE CONTROL SYSTEMS AND METHODS
First Claim
1. A cylinder control system of a vehicle, comprising:
- a target cylinder count module that determines a target number of cylinders of an engine to be activated during a future period,wherein the future period includes N sub-periods and N is an integer greater than or equal to two;
a first sequence setting module that, based on the target number, generates a sequence indicating N target numbers of cylinders to be activated during the N sub-periods, respectively;
a second sequence setting module that retrieves N predetermined sequences for activating and deactivating cylinders of the engine during the N sub-periods, respectively, and that generates a target sequence for activating and deactivating cylinders of the engine during the future period based on the N predetermined sequences; and
a cylinder actuator module that, during the future period;
activates opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the target sequence; and
deactivates opening of intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the target sequence.
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Accused Products
Abstract
A target cylinder count module determines a target number of cylinders of an engine to be activated during a future period. The future period includes N sub-periods, and N is an integer greater than one. Based on the target number, a first sequence setting module generates a sequence indicating N target numbers of cylinders to be activated during the N sub-periods, respectively. A second sequence setting module retrieves N predetermined sequences for activating and deactivating cylinders during the N sub-periods, respectively, and generates a target sequence for activating and deactivating cylinders during the future period based on the N predetermined sequences. During the future period, a cylinder actuator module: activates opening of intake and exhaust valves of the cylinders that are to be activated based on the target sequence; and deactivates opening of intake and exhaust valves of the cylinders that are to be deactivated based on the target sequence.
180 Citations
20 Claims
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1. A cylinder control system of a vehicle, comprising:
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a target cylinder count module that determines a target number of cylinders of an engine to be activated during a future period, wherein the future period includes N sub-periods and N is an integer greater than or equal to two; a first sequence setting module that, based on the target number, generates a sequence indicating N target numbers of cylinders to be activated during the N sub-periods, respectively; a second sequence setting module that retrieves N predetermined sequences for activating and deactivating cylinders of the engine during the N sub-periods, respectively, and that generates a target sequence for activating and deactivating cylinders of the engine during the future period based on the N predetermined sequences; and a cylinder actuator module that, during the future period; activates opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the target sequence; and deactivates opening of intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the target sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A cylinder control method of a vehicle, comprising:
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determining a target number of cylinders of an engine to be activated during a future period, wherein the future period includes N sub-periods and N is an integer greater than or equal to two; based on the target number, generating a sequence indicating N target numbers of cylinders to be activated during the N sub-periods, respectively; retrieving N predetermined sequences for activating and deactivating cylinders of the engine during the N sub-periods, respectively; generating a target sequence for activating and deactivating cylinders of the engine during the future period based on the N predetermined sequences; and during the future period; activating opening of intake and exhaust valves of first ones of the cylinders that are to be activated based on the target sequence; and deactivating opening of intake and exhaust valves of second ones of the cylinders that are to be deactivated based on the target sequence. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification