Apparatus for enriching fuel upon engine starting operation
US4480618A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Oct 27, 1982 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Oct 27, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M1/046
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An apparatus for enriching an air-fuel mixture supplied by a carburetor upon starting operation of an internal combustion engine comprises a fuel quantity increasing passage which is operative independent of main fuel supply system. The passage has an inlet communicated to a fuel supply source and an outlet opened at a location downstream of a throttle valve. The amount of fuel ejected from the outlet of the passage is controlled by a control signal which represents a product of a value variable in dependence on a suction vacuum, the rotational frequency of the engine and a value variable in dependence on the temperature of engine cooling water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.