Component vibration based cylinder deactivation control system and method

Abstract

The present invention relates to air cylinder stop control system based on component vibrating and method thereof, particularly relates to a method of changing an active cylinder count of an engine may include determining a vehicle vibration limit and a vehicle vibration level. The cylinder count may be modified (increased or decreased) based upon the vehicle vibration limit and the vehicle vibration level. The vehicle vibration limit may be based upon a vehicle speed, and a coolant temperature of the engine. The vehicle vibration level may be based upon at least one of a desired torque of the engine and a number of active cylinders of the engine. According to other features, the vehicle vibration level may be based upon a measured vibration level of a vehicle component.

Description

[0001] Cross References to Related Patents

[0001] This application claims the benefit of US Provisional Application No. 61 / 018,956, filed January 4, 2008. The disclosure of the invention of the above application is incorporated herein by reference. technical field

[0002] The present disclosure relates to the control of internal combustion engines, and more particularly to a cylinder deactivation control system and method based on component vibration levels. Background technique

[0003] The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.

[0004] The internal combustion engine is operable in an all-cylinder mode of operation and a cylinder deactivation mode of operation. In such engines, a certain number of cylinders may be deactivated (misfired) during low load conditions. For example, an eight cylinder engine may operate with all eight cylinders during an all cylinders m...

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