Lock up clutch controls—high idle set point
US9216741B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 14, 2014 |
| Grant date | Dec 22, 2015 |
| Priority date | — |
| Expiry date | Mar 13, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/146
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An engine control system is provided where the engine control system includes a torque converter, an engine connected to the torque converter, a transmission connected to the torque converter, a lock-up clutch housed in the torque converter wherein the lock-up clutch is configured to mechanically connect the engine and the transmission when the lock-up clutch is engaged, an engine speed sensor configured to obtain a prior engine speed which is measured prior to engagement of the lock-up clutch, a transmission speed sensor configured to obtain a prior transmission speed which is measured prior to the engagement of the lock-up clutch, and an engine control module configured to determine a desired engine speed at a speed lower than the prior engine speed and adjust a speed of the engine to the desired engine speed just prior to the movement of the lock-up clutch for the engagement or as the lock-up clutch moves toward the engagement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.