Fuel supply devices for internal combustion engines
US4227496A · kind A · utility
12Cited by
5References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 8, 1978 |
| Grant date | Oct 14, 1980 |
| Priority date | — |
| Expiry date | Nov 8, 1998 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D41/1443
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A fuel supply device for an internal combustion engine having at least two groups of combustion chambers, each group having a separate exhaust pipe, comprises a carburettor which delivers a mixture whose air/fuel ratio is adjusted responsive to the composition of the exhaust gases of the "richer" group. The carburettor is connected to a manifold having two branches each associated with one group. The branch feeding the "leaner" group is provided with an air/fuel ratio correction circuit comprising a solenoid valve controlled by a circuit whose input detector is located in the exhaust pipe of the "leaner" group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.