System for controlling idling speed in internal combustion engine for vehicle with automatic transmission
US4841447A · kind A · utility
21Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 22, 1986 |
| Grant date | Jun 20, 1989 |
| Priority date | — |
| Expiry date | May 22, 2006 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M3/075
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The engine idling speed control system in an internal combustion engine for a vehicle provided with an automatic transmission device. A shift down operation induced for attaining an engine braking effect is detected, and upon detection of such a shift down operation, the idling speed control system is controlled so that the intake air amount is incremented. As a result, an increase in an engine torque is obtained for decreasing shock during a shift down operation executed in an automatic transmission.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.