Honda Motor Co., Ltd.

Atsushi Hagihara

Shigetaka Kuroda

Hiroyuki Isegawa

The present invention provides a hybrid vehicle driving system in which quick response and improvement in fuel economy are compatible. A hybrid vehicle driving systemof the invention includes a cylinder deactivated operation necessity determination unit for determining the necessity of a cylinder deactivated operation of an enginewhen a required driving force required on a vehicle is smaller than a driving force of the enginethat runs in the cylinder deactivated operation. When the cylinder deactivated operation is determined to be unnecessary by the cylinder deactivated operation necessity determination unit, the vehicle can be driven in an EV driving by disengaging a first clutchand a second clutch, whereas when the cylinder deactivated operation is determined to be necessary by the cylinder deactivated operation necessity determination unit, the engineruns in the cylinder deactivated operation and at least one of the first clutchand the second clutchis engaged.

Hybrid vehicle driving system

A hybrid vehicle driving systemof the invention includes a cylinder deactivated operation necessity determination unit for determining the necessity of a cylinder deactivated operation of an enginewhen a required driving force required on a vehicle is smaller than a driving force of the enginethat runs in the cylinder deactivated operation. When the cylinder deactivated operation is determined to be unnecessary by the cylinder deactivated operation necessity determination unit, the vehicle can be driven in an EV driving by disengaging a first clutchand a second clutch, whereas when the cylinder deactivated operation is determined to be necessary by the cylinder deactivated operation necessity determination unit, the engineruns in the cylinder deactivated operation and at least one of the first clutchand the second clutchis engaged.

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Saitama, Japan

Atsushi Hagihara