Idling control system for an automatic transmission providing smooth starting off action
US4644826A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 1985 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Aug 26, 2005 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2312/02
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An automatic transmission has a gear transmission mechanism with a a forward clutch which is engaged when the gear transmission mechanism is engaged to a forward speed stage, a one way clutch which is in cooperation with the forward clutch provides a first speed stage by rotation prevention, and a brake which, when engaged, in cooperation with the one way clutch prevents the power output shaft of the gear transmission mechanism from rotating in the direction to allow reverse motion of the vehicle. An idling control system for the transmission includes a first mechanism for engaging the forward clutch selectively either to a maximum amount or to an intermediate amount; a second means for selectively engaging the brake; and a third mechanism for controlling the first and second mechanism. When the transmission is in a forward driving mode, the vehicle is substantially stationary, the engine is substantially idling, and the braking system is applied, the third mechanism engages the forward clutch to the intermediate amount and engages the brake. Thereafter, if the application of the braking system is terminated, it engages the forward clutch to the maximum amount and continues engagin…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.