Engine control apparatus and a method for transitioning between an all cylinder operation mode and a deactivated cylinder operation mode of a multiple cylinder internal combustion engine

摘要

Engine control apparatus includes, but is not limited to a determining device for determining whether or not the engine is operated under predetermined deceleration operating conditions or predetermined acceleration operating conditions and for individually deactivating two or more cylinders in a disenabling sequence which is different from the firing sequence if the engine is operated under predetermined deceleration operating conditions, and/or for individually reactivating two or more of the cylinders in a reactivating sequence which is different from the firing sequence if the engine is operated under predetermined acceleration conditions.

主权项

1. A method for transitioning between an all-cylinder operation mode and a deactivated cylinder operation mode of a plurality of cylinders in an internal combustion engine, the plurality of cylinders having a firing sequence in the all-cylinder operation mode, the method comprising:
determining whether the internal combustion engine is operated under predetermined deceleration operating conditions when in the all-cylinder operation mode; individually deactivating at least two cylinders of the plurality of cylinders in a disenabling sequence that is different from the firing sequence if the internal combustion engine is operated under predetermined deceleration operating conditions; determining whether the internal combustion engine is operated under predetermined acceleration operating conditions when in the deactivated cylinder operation mode; and individually reactivating at least two cylinders of the plurality of cylinders in a reactivating sequence which is different from the firing sequence if the internal combustion engine is operated under predetermined acceleration operating conditions.