System and method for controlling spark timing when cylinders of an engine are deactivated to reduce noise and vibration
First Claim
Patent Images
1. A system comprising:
- a cylinder activation module that selectively deactivates and reactivates a cylinder of an engine based on a driver torque request; and
a spark timing module that, when the cylinder is deactivated for multiple engine cycles, selectively increases an amount of spark retard for at least one other cylinder of the engine that is active based on noise and vibration generated by the engine when the cylinder is deactivated.
3 Assignments
0 Petitions
Accused Products
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.
303 Citations
20 Claims
-
1. A system comprising:
-
a cylinder activation module that selectively deactivates and reactivates a cylinder of an engine based on a driver torque request; and a spark timing module that, when the cylinder is deactivated for multiple engine cycles, selectively increases an amount of spark retard for at least one other cylinder of the engine that is active based on noise and vibration generated by the engine when the cylinder is deactivated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
-
-
11. A method comprising:
-
selectively deactivating and reactivating a cylinder of an engine based on a driver torque request; and when the cylinder is deactivated for multiple engine cycles, selectively increasing an amount of spark retard for at least one other cylinder of the engine that is active based on noise and vibration generated by the engine when the cylinder is deactivated. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
-
Specification