Two cycle loop scavenged engine with improved transfer passage flow
US4549507A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 19, 1984 |
| Grant date | Oct 29, 1985 |
| Priority date | — |
| Expiry date | Sep 19, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
Horsepower and fuel economy improvements, and a reduction in horsepower variation, are realized in a two cycle loop scavenged internal combustion engine by enhancing combustion chamber (10) intake directional flow (28) by directing flow along the outermost portions (54) of the transfer passages (12), and blocking flow along shorter paths (56) adjacent the cylinder (6) which otherwise short-circuit the outermost flow and adversely affect directional flow into the combustion chamber from the intake ports (16), to substantially eliminate intake flow directed toward the exhaust port (26) from the intake port otherwise caused by the short-circuiting. The intake port flow in the combustion chamber is afforded in a direction determined by the non-short-circuited path in the transfer passage, and the direction-altering flow in the combustion chamber from the intake port otherwise due to the short-circuit path is substantially eliminated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.