Fuel injection control means for internal combustion engines
US4641620A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 13, 1985 |
| Grant date | Feb 10, 1987 |
| Priority date | — |
| Expiry date | Aug 13, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An engine intake system including a primary and secondary intake passages which are separated from each other and are respectively provided with a primary and a secondary fuel injection valve. The secondary intake passage is closed and the secondary fuel injection valve is inoperable for light load engine operation. When the secondary fuel injection valve is restarted to operate for heavy load engine operation, the quantity of fuel supply is momentarily increased to avoid any stepwise change in the engine output torque. The amount of the increase in the fuel supply is increased in response to a decrease in the engine speed. When operation of the secondary fuel injection valve is stopped, the fuel supply is decreased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.