SPARK VOLTAGE LIMITING SYSTEM FOR ACTIVE FUEL MANAGEMENT
First Claim
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1. An engine control system for a vehicle comprising:
- a variable displacement module that deactivates N of M cylinders of an engine during a fuel management mode, where N is an integer and M is an integer greater than 1; and
a spark control module that generates a spark timing signal for the N cylinders based on a pre-dwell time and a fuel management dwell modifier during the fuel management mode,wherein the spark control module reduces dwell time of the N cylinders during the fuel management mode based on the fuel management dwell modifier.
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Abstract
An engine control system for a vehicle includes a variable displacement module that deactivates N of M cylinders of an engine during a fuel management mode. N is an integer and M is an integer greater than 1. A spark control module generates a spark timing signal for the N cylinders based on a pre-dwell time and a fuel management dwell modifier during the fuel management mode. The spark control module reduces dwell time of the N cylinders during the fuel management mode based on the fuel management dwell modifier.
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Citations
17 Claims
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1. An engine control system for a vehicle comprising:
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a variable displacement module that deactivates N of M cylinders of an engine during a fuel management mode, where N is an integer and M is an integer greater than 1; and a spark control module that generates a spark timing signal for the N cylinders based on a pre-dwell time and a fuel management dwell modifier during the fuel management mode, wherein the spark control module reduces dwell time of the N cylinders during the fuel management mode based on the fuel management dwell modifier. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An engine control system for a vehicle comprising:
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a variable displacement module that deactivates N of M cylinders of an engine during a fuel management mode, where N is an integer and M is an integer greater than 1; a spark control module that generates a spark timing signal for the N cylinders; and an ignition coil circuit that limits at least one of a current level of a coil of a spark plug of the N cylinders to a predetermined current level and a secondary voltage of the spark plug to a predetermined voltage level during the fuel management mode. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification