Fuel pump control apparatus
US4800859A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 24, 1987 |
| Grant date | Jan 31, 1989 |
| Priority date | — |
| Expiry date | Jun 24, 2007 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/3082
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A vehicle fuel pump control apparatus controls the operating speed of a fuel pump to adjust the quantity of fuel forced to at least one fuel injector. When the required fuel quantity of the engine which is based on its operating condition is determined to be greater than a reference level predetermined in correspondence to the operating condition, the pump operating speed is increased, whereas the pump operating speed is decreased when the required fuel quantity is determined smaller than the reference level. When an insufficient fuel supply is detected during the low speed operation, the reference level is updated or readjusted to a lower level in such a manner that the required fuel quantity is determined greater than the corrected level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.