Fuel injection system for an internal-combustion engine
US5105788A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 24, 1991 |
| Grant date | Apr 21, 1992 |
| Priority date | — |
| Expiry date | Jun 24, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B3/06
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection system, in which the injection quantity and the start of injection are controlled with solenoid valves, in view of engine-specific data and various parameters. Rotational-speed pulses are measured at the camshaft and/or at the crankshaft. Trigger times, which establish the start of injection and the injection quantity, are calculated on the basis of the rotational-speed pulses and a start-of-injection reference mark. Based upon an instantaneous rotational speed before the metering-in stage, an estimated value is determined, and based upon an instantaneous rotational speed during the metering-in stage, a control value is determined. The estimated value is compared to the control value and, if need be, the estimated value is adjusted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.