IP Library › Granted Patent US 9,434,390
Granted Patent B2
US 9,434,390 · App. 14/737,752 · Granted Sep 6, 2016

Vehicle control device and vehicle control method

Inventors: Takahiro Yokokawa (Susono, JP); Masami Kondo (Niwa-gun, JP); Youhei Hareyama (Gotenba, JP)
Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHA
B60W50/0098B60W10/02B60W10/06B60W10/10B60W2710/02B60W2710/06B60W2710/10
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Quick Facts
Patent No.
US 9,434,390
App. No.
14/737,752
Granted
Sep 6, 2016
Kind
B2
Abstract

A vehicle control device includes a control unit configured to execute free-run traveling in which an engine is stopped and a clutch that transmits power of the engine to a drive wheel is disengaged, at a time acceleration is not requested during traveling. The control unit is configured to prohibit upshifting of a continuously variable transmission at least during execution of the free-run traveling, drive the engine from the free-run traveling state in response to an acceleration request, and upshift the continuously variable transmission at a time of returning to a normal traveling state in which the clutch is engaged.

Claims (12)

1. A vehicle control device comprising:

a control unit configured to execute free-run traveling in which an engine is stopped and a clutch that transmits power of the engine to a drive wheel is disengaged, at a time acceleration is not requested during traveling, wherein

the control unit is configured to prohibit upshifting of a continuously variable transmission at least during execution of the free-run traveling, drive the engine from the free-run traveling state in response to an acceleration request, and upshift the continuously variable transmission at a time of returning to a normal traveling state in which the clutch is engaged.

2. The vehicle control device according to claim 1 , wherein the control unit is configured to upshift the continuously variable transmission before starting engagement of the clutch.

3. The vehicle control device according to claim 2 , wherein the control unit is configured to fix a variable speed ratio of the continuously variable transmission during the execution of the free-run traveling.

4. The vehicle control device according to claim 1 , wherein the control unit is configured to fix a variable speed ratio of the continuously variable transmission during the execution of the free-run traveling.

5. A vehicle control method comprising:

a control step of executing free-run traveling in which an engine is stopped and a clutch that transmits power of the engine to a drive wheel is disengaged, at a time acceleration is not requested during traveling, wherein

the control step includes:

prohibiting upshifting of a continuously variable transmission at least during execution of the free-run traveling;

driving the engine from the free-run traveling state in response to an acceleration request; and

upshifting the continuously variable transmission at a time of returning to a normal traveling state in which the clutch is engaged.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 12, 2015
From: YOKOKAWA, TAKAHIRO; KONDO, MASAMI; HAREYAMA, YOUHEI
To: TOYOTA JIDOSHA KABUSHIKI KAISHA
Reel/Frame 035827/0399 →
Priority Claims (1)
JP 2014-144147 · Jul 14, 2014 · national
Continuity (1)
Related Publication 20160009292A1 · Jan 14, 2016