Control device for automatic transmission and control method for automatic transmission
US10527161B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Sep 7, 2016 |
| Grant date | Jan 7, 2020 |
| Priority date | — |
| Expiry date | Sep 30, 2036 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/6614
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control device that controls an automatic transmission is provided, in which device the automatic transmission includes a variator disposed in a power transmission path between a driving source and a driving wheel of a vehicle, and a friction engaging element disposed between the variator and the driving wheel, in a manner capable of transmitting a power disconnectably via the power transmission path. The control device increases a speed ratio of the variator toward a predetermined target speed ratio with disengaging the friction engaging element during a vehicle stop of the vehicle, and executes a learning regarding a hydraulic control of the friction engaging element when the friction engaging element is disengaged during the vehicle stop. The control device decreases the target speed ratio at a time of learning when the learning is executed during the vehicle stop, compared to a time of vehicle stop other than the time of learning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.