Fuel injection system of an internal combustion engine
US4864998A · kind A · utility
22Cited by
1References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1988 |
| Grant date | Sep 12, 1989 |
| Priority date | — |
| Expiry date | Jul 25, 2008 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/2451
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system of an internal combustion engine in which the fuel injection amount is controlled corresponding to an atmospheric pressure change by utilizing an altitude compensating learning correction factor stored in a backup RAM. Even thought a battery is disconnected from the memory of the backup RAM and the stored data of the learning correction factor is lost, the altitude compensating learning correction factor is directly determined based on the atmospheric pressure without executing learning control so that the fuel injection amount is corrected at the time of the initial cranking of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.