Control device for vehicle drive device
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsKenta Kumazaki, Tooru Matsubara, Atsushi Tabata, Tatsuya Imamura
Life of this patent
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Abstract
A control device of a vehicle drive device includes: a hydraulic power transmission device having a lockup clutch mechanically coupling an input-side rotating member to which power from an engine is input and an output-side rotating member outputting power to drive wheels; and an electric motor coupled to a power transmission path between the hydraulic power transmission device and the drive wheels. If regeneration braking of a vehicle is performed with the electric motor, an engagement force of the lockup clutch is made larger when a vehicle speed related value varying depending on a vehicle speed is higher.
Claims9
A control device of a vehicle drive device for use with a vehicle having an engine and drive wheels, the control device comprising:
- a hydraulic power transmission device having a lockup clutch mechanically coupling:
- an input-side rotating member to which power from the engine is input, and an output-side rotating member outputting power to the drive wheels;
- an electric motor coupled to a power transmission path between the hydraulic power transmission device and the drive wheels;
- and
- an engagement force of the lockup clutch is increased in response to:
- (i) regeneration braking of a vehicle being performed with the electric motor and (ii) a vehicle speed related value varying depending on a vehicle speed is higher than a first predetermined vehicle speed determination value,
- an engine coupled electric motor is disposed that is coupled to a power transmission path between the engine and the hydraulic power transmission device, wherein the engine-coupled electric motor is configured to be regeneratively operated along with the electric motor, and
- during release of the lockup clutch when the regeneration braking of the vehicle is performed, a rotation speed of the engine is made lower by the engine-coupled electric motor when the vehicle speed related value is lower than a second predetermined vehicle speed determination value.
Dependencies are inferred from the claim text.