Intake system for multiple valve type engine
US4520775A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 19, 1981 |
| Grant date | Jun 4, 1985 |
| Priority date | — |
| Expiry date | Nov 19, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
An improved performance internal combustion engine having a pair of intake passages that supply the charge to a single chamber of the engine. A valving arrangement is provided so that the idle charge is supplied primarily through one of the intake passages and the full load charge is supplied through both passages. An interconnecting passage interconnects the passages with each other downstream of the throttle valves so that at least a portion of even the idle charge will be supplied through both passages to cool the intake valves associated with the passages and to ensure against the collection of deposits. In accordance with a feature of the invention, a pair of spark plugs are positioned in the chamber at its outer periphery on diametrically opposite sides of the cylinder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.