Fuel supply system responsive to engine fuel demand
US6279541A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 2000 |
| Grant date | Aug 28, 2001 |
| Priority date | — |
| Expiry date | Dec 1, 2020 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M2037/087
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A no-return system for supplying fuel from a tank to a fuel injected internal combustion engine of an automotive vehicle in response to the fuel demand of the engine. The pump supplies more fuel than that required by the operating engine and the excess fuel is diverted from the engine by a bypass fuel pressure regulator and returned to the tank through a fluid-activatable switch movable to electrically open and closed states in response to the rate of flow of excess fuel through the switch. An electric control circuit is responsive to the state of the switch to change the magnitude of the power applied to the electric motor to change its operating speed and thereby modulate the output fuel flow rate of the pump in response to the fuel demand of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.