Control device for transmission and braking torque generation determination method for transmission
US9174630B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 30, 2012 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Mar 30, 2032 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/1208
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A control device for a transmission including m (m≧3) solenoid valves and configured to establish a plurality of shift speeds by engaging n1 (2≦n1<m) engagement elements using hydraulic pressures of n1 solenoid valves among the m solenoid valves, the control device. The control device having an actual current value detection unit that detects respective values of actual currents flowing through solenoids of the m solenoid valves; and a determination unit that determines whether or not braking torque is generated on an output shaft of the transmission by comparing the detected actual current values for solenoids of n2 (n1<n2≦m) solenoid valves and a current threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.