Active cylinder count changing method for internal combustion engine of vehicle, involves determining vehicle vibration level, and modifying active cylinder count based on vehicle vibration limit and vehicle vibration level

摘要

The method involves determining a vehicle vibration limit based upon a vehicle speed (KPH) or a coolant temperature of an internal combustion engine (12). A vehicle vibration level is determined based on a number of active cylinders of the engine, a desired torque of the engine and a measured vibration level of a vehicle component e.g. seat track. An active cylinder count is modified based on the vehicle vibration limit and the vehicle vibration level. The vibration limit is increased by a correction factor based on a signal from a user actuated economy switch (38). An independent claim is also included for a control module comprising a vibration limit module.