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US 2021/0276537 A1Published application
Drive device for hybrid vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYoshio HASEGAWA, Takeshi AKIRA
Life of this patent
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Abstract
An ECU executes a first control when an automatic transmission has a shift range changed from an N range to a D range. In the first control, the ECU initially rotates an EOP and also sets a motor generator's rotational speed to a prescribed rotational speed. The ECU rapidly engages a Drive clutch while maintaining the motor generator's rotational speed at the prescribed rotational speed. The ECU then increases the motor generator's rotational speed to a target rotational speed set for the D range.
Claims8
A drive device for a hybrid vehicle, comprising:
- an internal combustion engine;
- an electric motor;
- an automatic transmission that transmits power of at least one of the internal combustion engine and the electric motor to a driving wheel;
- a first engagement element provided between the internal combustion engine and the electric motor;
- an electrically driven hydraulic pressure source that supplies hydraulic pressure to the first engagement element and engagement elements included in the automatic transmission;
- and
- a control device that controls the electric motor and the electrically driven hydraulic pressure source, wherein
- when the automatic transmission has a shift range changed and the first engagement element is disengaged, the control device executes a prescribed control, and
- in the prescribed control, the control device
- sets a rotational speed of the electric motor to be equal to or lower than a prescribed rotational speed,
- switches an engagement state of the engagement elements included in the automatic transmission to an engagement state corresponding to the changed shift range, and
- increases the rotational speed of the electric motor to a target rotational speed corresponding to the changed shift range.
9 more elements
Dependencies are inferred from the claim text.