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
First Claim
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.
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Accused Products
Abstract
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.
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Citations
20 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An engine control apparatus, comprising:
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a first determinator configured to determine whether an internal combustion engine is operated under predetermined deceleration operating conditions and predetermined acceleration operating conditions; a deactivator configured to individually deactivate two or more of a plurality of cylinders in a disenabling sequence that is different from a firing sequence if the internal combustion engine is operated under predetermined deceleration operating conditions, the deactivator further configured to individually reactivate two or more 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 conditions. - View Dependent Claims (17)
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18. A computer readable medium embodying a computer program product, said computer program product comprising:
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a transition program 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 transition program configured to; determine whether the internal combustion engine is operated under predetermined deceleration operating conditions when in the all-cylinder operation mode; individually deactivate 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; determine whether the internal combustion engine is operated under predetermined acceleration operating conditions when in the deactivated cylinder operation mode; and individually reactivate 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. - View Dependent Claims (19, 20)
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Specification