Invention Grant
- Patent Title: System and method for controlling spark timing when cylinders of an engine are deactivated to reduce noise and vibration
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Application No.: US13798590Application Date: 2013-03-13
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Publication No.: US09719439B2Publication Date: 2017-08-01
- Inventor: Daniel G. Brennan , Sanjeev M. Naik
- Applicant: GM Global Technology Operations LLC
- Applicant Address: US MI Detroit
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F02D41/00
- IPC: F02D41/00 ; F02D17/00 ; F02D37/02 ; F02P5/15

Abstract:
A system according to the principles of the present disclosure includes a cylinder activation module and a spark timing module. The cylinder activation module selectively deactivates and reactivates a cylinder of an engine based on a driver torque request. When the cylinder is deactivated, the spark timing module selectively increases an amount by which spark timing of at least one active cylinder of the engine is retarded based on noise and vibration generated by the engine when the cylinder is deactivated.
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