US 9,283,956 B2 · Hybrid vehicle rapid deceleration control device

Abstract

Provided is a hybrid vehicle in which a motor/generator 5 is positioned between an engine 1 and an automatic transmission 3, the engine 1 and the motor/generator 5 are connected through a first clutch 6 and a second clutch 7 is provided between the motor/generator 5 and a drive road wheel 2. In an HEV mode in which the first clutch 6 is engaged, when deceleration of a vehicle is determined to be rapid deceleration of a threshold value or greater, the first clutch 6 is released and at the same time fuel supply to the engine 1 is stopped through an engine controller 21. Even when, due to rapid decelerating, the engine speed Ne drops to an idling speed or lower due to delay in the release of the first clutch 6, there is no combustion or explosion and thus floor vibration does not occur.

Claims12

Dependent claims

A rapid deceleration control device of a hybrid vehicle in which a motor is positioned between an engine and a drive road wheel and the engine and the motor are connected through a clutch,

the rapid deceleration control device comprising:
a rapid deceleration judging means for judging whether or not a deceleration of the vehicle is a rapid deceleration of a predetermined value or greater, wherein the rapid deceleration causes the engine to be disconnected from the motor through disengagement of the clutch;
and
a fuel cut means for stopping feeding of fuel to the engine,
wherein when, under running of the vehicle with the clutch engaged, the rapid deceleration judging means judges that the deceleration is equal to or greater than the predetermined value, the fuel cut means stops feeding of fuel to the engine.

2 more elements

Dependencies are inferred from the claim text.

Hybrid vehicle rapid deceleration control device

Life of this patent

Hybrid vehicle rapid deceleration control device

Life of this patent

Abstract

Claims12