Title:
Control device for vehicle power transmission device
Document Type and Number:
Japanese Patent JP6323186
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a control device of a vehicle power transmission system for appropriately improving the accuracy of an engagement hydraulic pressure learning control.SOLUTION: If an operating state of a power source is switched from any one operating state including motoring, engine load operation, engine no-load operation, and engine operation stop to another operating state during gearshift in a step transmission unit, an engagement hydraulic pressure learning control is prohibited. Owing to this, if the operating state of the power source is switched from one of the motoring, the engine load operation, the engine no-load operation, and the engine operation stop to another operating state, and a torque change acts on a transmission member that is an input shaft of the step transmission unit to influence learning parameters AD and BD of the engagement hydraulic pressure learning control, the engagement hydraulic pressure learning control is prohibited and the learning parameters AD and BD are not used. It is, therefore, possible to appropriately improve the accuracy of the engagement hydraulic pressure learning control.
Inventors:
Kumazaki Kenta
Kazuyuki Shiiba
Toru Matsubara
Kazuyuki Shiiba
Toru Matsubara
Application Number:
JP2014116305A
Publication Date:
May 16, 2018
Filing Date:
June 04, 2014
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
B60W20/40; B60K6/445; B60K6/547; B60L50/16; B60W10/10; F16H61/00
Domestic Patent References:
| JP9322312A | ||||
| JP4224360A | ||||
| JP2057438A | ||||
| JP2007099265A | ||||
| JP2008114803A |
Attorney, Agent or Firm:
Haruyuki Ikeda
Kojiro Ikeda
Kojiro Ikeda