Fuel injection control system for an internal combustion engine
US5934259A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Mar 25, 2018 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2041/0092
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel injection control system provides a superior start characteristic of an internal combustion engine without deterioration of an exhaust emission. The internal combustion engine has a plurality of cylinders. The fuel injection control system controls a time for injecting fuel into each of the cylinders. A first reference signal is generated each time a crank shaft of the internal combustion engine rotates 360 degrees. A second reference signal is generated each time the crank shaft rotates 720 degrees. A crank angle signal is generated each time the crank shaft rotates a first predetermined angle. Fuel is supplied to the cylinders after the first reference signal is generated for the first time after the internal combustion engine is started. The fuel is sequentially injected into each of the cylinders in a predetermined order in synchronization with a rotation of the crank angle. One of the cylinders in which the fuel supplied by the first asynchronous injection means is consumed for the first time is assumed so as to set the one of the cylinders as a cylinder from which the synchronous injection is started. An assumption of the one of the cylinders is made based on a determi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.