Engine induction system
US4475486A · kind A · utility
18Cited by
12References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 18, 1982 |
| Grant date | Oct 9, 1984 |
| Priority date | — |
| Expiry date | Feb 18, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/465
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A port fuel injection system for an automotive engine has injectors delivering fuel across an air gallery and through subsonic nozzles into the engine inlet manifold to provide enhanced mixing of air and fuel for combustion in the engine. A staged throttle mechanism operates a primary throttle controlling air flow through the air gallery and a secondary throttle controlling air flow directly into the manifold so that the air gallery provides substantially the entire air flow required for low speed light load engine operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.