Fuel injection control system for internal combustion engine
US5213082A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 5, 1992 |
| Grant date | May 25, 1993 |
| Priority date | — |
| Expiry date | May 5, 2012 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/064
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection control system for an internal combustion engine equipped with a heater for heating an air-fuel mixture in cold engine start. In the system, the timing to cease injection is first obtained by the coolant temperature and the engine load. The value is then deferred by an amount if the heater is turned on. The amount increases as the heater on-time increases. Then an injection period is added to the timing to cease injection and another timing to commence injection is determined. Thus, the injection timing is deferred if an air-fuel mixture is heated so as to minimize the residence time of the heated fuel. This ensures that the fuel will be quickly drawn to the cylinder to be burnt completely and the composition of the gas is thus improved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.