Fuel injection control apparatus for internal combustion engine
US5402760A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 20, 1993 |
| Grant date | Apr 4, 1995 |
| Priority date | — |
| Expiry date | May 20, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A pilot injection amount QP, a main injection amount QM, and a lag TDF between the main and pilot injections are obtained (S130). The pilot injection initiating timing TTP, the pilot injection period TP, the main injection initiating timing TTM, and the main injection period TM are obtained on the basis of the pilot injection amount QP, the main injection amount QM, the fundamental injection initiating timing KT and the common rail pressure Pc (S150). The main injection period correction amount .DELTA.TQM and the injection initiating timing correction shift amount .DELTA.T are then obtained on the basis of the pilot injection period TP and the time lag TDF (S160). Finally, modified by these correction amount .DELTA.TQM and the shift amount .DELTA.T, the pilot injection initiating timing TTP', the main injection initiating timing TTM' and the main injection period TM' are obtained as final values (S170). With this arrangement, a fuel injection control apparatus for an internal combustion engine becomes capable of reducing adverse affects of residual magnetic flux and the pressure pulsation in the fuel injection initiating timing of the main injection, thereby suppressing smoke gener…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.