Fuel/air mixture supply system with additional air supply
US4347816A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1979 |
| Grant date | Sep 7, 1982 |
| Priority date | — |
| Expiry date | Dec 17, 1999 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M69/044
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Disclosed is a fuel/air mixture supply system for an internal combustion engine of the single-point fuel injection type wherein, the intake manifold system is formed with a first fuel/air supply passage which inspires atmospheric air and which has fitted generally at a midpoint thereof a fuel injection valve which injects fuel into the inspired air. The fuel/air mixture then proceeds to a first set of branched passages, each one of which conducts the fuel/air mixture to a cylinder of the engine. Further, there is provided a second air supply passage which inspires atmospheric air and which branches into a second set of branched passages, each one of which conducts air to a cylinder of the engine. The first fuel/air supply passage is smaller than the second air supply passage, and the first set of branched passages are smaller than the second set of branched passages. The flow of air/fuel mixture in the first fuel/air supply passage is controlled by a first throttle valve, and the flow of air in the second air supply passage and/or the second branched passages is controlled by a regulating means responsive to the operation of the first throttle valve, so as to be substantially zero …
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.