Engine fuel injection controller
US5495839A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 10, 1994 |
| Grant date | Mar 5, 1996 |
| Priority date | — |
| Expiry date | Aug 10, 2014 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/047
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The delay of fuel flow in an intake passage of an engine is divided into two categories, namely a short-term delay having a relatively fast time constant and a long-term delay having a relatively slow time constant. The corrections for each delay are stored separately depending on the engine running conditions. A mechanism is provided for estimating the particle diameter of the fuel spray, and either the long-term delay correction is modified so that it increases or the short-term delay correction is modified so that it decreases as the particles of fuel spray become smaller. The basic fuel injection amount during transient engine running conditions is corrected by applying the delay flow correction thereby modified, and error in the air-fuel ratio during transient conditions due to atomization of fuel particles is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.