US 12,703,343 B2Granted

Vehicle drive device

AssigneeAisin Corporation

InventorsYoshiaki Ito, Takahiro Fujiwara, Makoto Chujo

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Abstract

In engagement control for changing a clutch WSC from a disengaged state to a fully engaged state after engagement determination is made on the clutch WSC, a control device executes an engagement preparation phase in which no torque capacity is generated and an actual engagement phase in which a torque capacity is generated and the fully engaged state is achieved. In a case where a vehicle is traveling with a driving force of a rear motor drivingly connected to a rear wheel when executing the engagement control, the control device controls a rotation speed of a rotary electric machine to be higher than a rotation speed of a transmission member when the vehicle is accelerating, and controls the rotation speed of the rotary electric machine to be lower than the rotation speed of the transmission member when the vehicle is decelerating.

Claims6

Dependent claims

A vehicle drive device comprising:

a rotary electric machine;
a first clutch that is interposed between the rotary electric machine and a transmission member drivingly connected to one wheel out of a front wheel and a rear wheel and that is able to connect or disconnect power transmission between the rotary electric machine and the transmission member;
and
a control device that controls engagement and disengagement of the first clutch, wherein
in engagement control for changing the first clutch from a disengaged state to a fully engaged state after engagement determination is made when the first clutch is disengaged,
in a case where a vehicle is traveling with a driving force of a drive source drivingly connected to the other wheel out of the front wheel and the rear wheel when executing the engagement control,
the control device:
controls a rotation speed of the rotary electric machine to be higher than a rotation speed of the transmission member when the vehicle is accelerating;
and
controls the rotation speed of the rotary electric machine to be lower than the rotation speed of the transmission member when the vehicle is decelerating.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/274,087Filed 16 Feb 2022
Priority: JP 2021-05871830 Mar 2021
Published: US 2025/0178584 A15 Jun 2025
Granted: 11 Aug 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification35 codes

B60L 15/2054
For control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed: by…
B60W 20/10
Control systems specially adapted for hybrid vehicles: controlling the power contribution of each of the prime movers to meet required power demand
B60K 6/387
Characterised by the driveline clutches: actuated clutches, i.e. clutches engaged or disengaged by electric, hydraulic or mechanical actuating means
B60K 6/448
Series-parallel type: electrical distribution type