Intake system of an internal combustion engine
US4480606A · kind A · utility
8Cited by
10References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1982 |
| Grant date | Nov 6, 1984 |
| Priority date | — |
| Expiry date | Oct 12, 2002 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/40
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An internal combustion engine having a helically-shaped intake port. When the intake manifold vacuum is in the range of about -500 through -250 mmHg, a super lean mixture is fed into the cylinders of the engine. When the intake manifold vacuum is in the range of about -250 through -100 mmHg, a fuel mixture, having the stoichiometric air-fuel ratio, is fed into the cylinders of the engine. When the intake manifold vacuum is smaller than about -100 mmHg, a rich mixture is fed into the cylinders of the engine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.