Fuel injection control method and system in a cylinder-inside direct injection type spark ignition combustion engine
US5970955A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 4, 1998 |
| Grant date | Oct 26, 1999 |
| Priority date | — |
| Expiry date | Mar 4, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection control method and system in a multi-cylinder direct injection type internal combustion engine. A first sensor detects whether the engine is in a start-up condition and, upon detection, generates a start-up signal. A second sensor generates an engine operating condition indicative signal. A third sensor detects an operative condition of the fuel pump. A basic period of injection based on the second sensor signal is calculated. A decrease in injection amount based on the fuel pump operative conditions sensed by the third sensor is determined and the basic period of injection is modified to compensate for the decrease in the injection amount. The injection valves are controlled according to the modified injection period.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.