Control apparatus for vehicle

Patent metadata

Field	Value
Publication number	US-10800417-B2
Application number	US-201815949951-A
Country	US
Kind code	B2
Filing date	Apr 10, 2018
Priority date	Apr 18, 2017
Publication date	Oct 13, 2020
Grant date	Oct 13, 2020

Abstract

A control apparatus for a vehicle that includes an engine includes an electric generator, a throttle valve, an electric generator control unit, and a throttle control unit. The electric generator is configured to be coupled to the engine. The throttle valve is configured to control an amount of intake air of the engine. The electric generator control unit is configured to allow the electric generator to perform regenerative power-generation on decelerated travel of the vehicle. The throttle control unit is configured to control the throttle valve openwise on the decelerated travel. The electric generator control unit is configured to cause an increase in power-generation torque of the electric generator, upon a switchover of the engine from a fuel cut state to a fuel injection state on the decelerated travel.

First claim

The invention claimed is:

1. A control apparatus for a vehicle that includes an engine, the control apparatus comprising:
an electric generator configured to be coupled to the engine;
a lock up clutch configured to be coupled to the engine;
a throttle valve configured to control an amount of intake air of the engine;
an electric generator control unit configured to allow the electric generator to perform regenerative power generation on decelerated travel of the vehicle; and
a throttle control unit configured to control the throttle valve openwise on the decelerated travel,
the electric generator control unit being configured to cause an increase in power-generation torque of the electric generator, upon a switchover of the engine from a fuel cut state to a fuel injection state on the decelerated travel,
wherein the throttle control unit controls the throttle valve from openwise to closewise, on a condition that the lock up clutch is controlled from an engaged state to a disengaged state, with the throttle valve having been controlled openwise on the decelerated travel.

2. The control apparatus for the vehicle according to claim 1 , wherein the electric generator control unit controls the power-generation torque of the electric generator on a basis of a rotation speed of the engine, in causing the increase in the power-generation torque of the electric generator in accompaniment with the switchover of the engine to the fuel injection state.

3. The control apparatus for the vehicle according to claim 2 , further comprising an engine control unit configured to control the engine, wherein
the engine control unit executes an ignition retard control, in controlling the engine from the fuel cut state to the fuel injection state, the ignition retard control including retarding ignition timing.

4. The control apparatus for the vehicle according to claim 3 , wherein, at a first time, in a coasting in which a stepping down of an accelerator pedal is released, the engine is controlled to the fuel cut state, the electric generator control unit is controlled to perform the regenerative power generation, and the lock up clutch is controlled to the engaged state.

5. The control apparatus for the vehicle according to claim 2 , wherein, at a first time, in a coasting in which a stepping down of an accelerator pedal is released, the engine is controlled to the fuel cut state, the electric generator control unit is controlled to perform the regenerative power generation, and the lock up clutch is controlled to the engaged state.

6. The control apparatus for the vehicle according to claim 1 , further comprising an engine control unit configured to control the engine, wherein
the engine control unit executes an ignition retard control, in controlling the engine from the fuel cut state to the fuel injection state, the ignition retard control including retarding ignition timing.

7. The control apparatus for the vehicle according to claim 6 , wherein, at a first time, in a coasting in which a stepping down of an accelerator pedal is released, the engine is controlled to the fuel cut state, the electric generator control unit is controlled to perform the regenerative power generation, and the lock up clutch is controlled to the engaged state.

8. The control apparatus for the vehicle according to claim 1 , wherein, a throttle plate position is adjusted as to prevent a shortage of a negative pressure of an unexpected vacuum booster when the controlling controls the throttle valve openwise.

9. A control apparatus for a vehicle that includes an engine, the control apparatus comprising:
an electric generator configured to be coupled to the engine;
a lock up clutch configured to be coupled to the engine;
a throttle valve configured to control an amount of intake air of the engine; and
circuitry configured to allow the electric generator to perform regenerative power-generation on decelerated travel of the vehicle,
control the throttle valve openwise on the decelerated travel, and
cause an increase in power-generation torque of the electric generator, upon a switchover of the engine from a fuel cut state to a fuel injection state on the decelerated travel,
wherein the throttle valve is controlled from openwise to closewise, on a condition that the lock up clutch is controlled from an engaged state to a disengaged state, with the throttle valve having been controlled openwise on the decelerated travel.

Assignees

• Subaru Corp

Inventors

• Kinoshita Takahiro
• Shimizu Hirofumi

Classifications

• B60W2510/0652

  Speed change rate · CPC title

• F02D35/0023

  Controlling air supply · CPC title

• F02P5/1504

  with particular means during a transient phase, e.g. acceleration, deceleration, gear change (during starting F02P5/1506) · CPC title

• F02N11/0866

  comprising several power sources, e.g. battery and capacitor or two batteries · CPC title

• F02N2011/0885

  Capacitors, e.g. for additional power supply · CPC title