Injection supply device for internal combustion engine, with electronic control
US5033439A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1990 |
| Grant date | Jul 23, 1991 |
| Priority date | — |
| Expiry date | Mar 15, 2010 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/062
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel supply device for an internal combustion engine comprises at least one electrically controlled injector feeding fuel under pressure into the intake manifold of the engine and an electronic control circuit connected to sensors responsive to operating parameters of the engine, particularly the engine speed, and delivering periodic signals of variable duty ratio to the injector. The control circuit applies asynchronous electrical signals to the injector as long as the running speed of the engine does not reach a predetermined threshold value. The asynchronous signals have a frequency very much higher than that which the synchronous operative law would cause.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.