Idle rotation speed learning control apparatus and method of engine
US6016787A · kind A · utility
1Cited by
5References
12Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Jul 2, 1998 |
| Grant date | Jan 25, 2000 |
| Priority date | — |
| Expiry date | Jul 2, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/2464
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
In an engine whose target air-fuel ratio during the idle state is set to a leaner value than a theoretical air-fuel ratio, the target air-fuel ratio is forcibly switched to the theoretical air-fuel ratio and the learning is performed, when learning a learning correction quantity of the idle rotation speed, and the learning performed by switching to said theoretical air-fuel ratio is executed only once during an on state of an ignition switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.