Multiple port cylinder for crankchamber precompression type two stroke engines
US4329948A · kind A · utility
8Cited by
0References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 26, 1980 |
| Grant date | May 18, 1982 |
| Priority date | — |
| Expiry date | Mar 26, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02B2075/025
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A cylinder for crankchamber precompression type two stroke engines includes three pairs of main scavenging ports which are symmetrical with respect to a longitudinal plane passing through the centers of the intake and exhaust ports and containing the longitudinal center line of the cylinder. A pair of auxiliary scavenging ports are provided at the opposite sides of the longitudinal plane in such a manner that in a horizontal cross-section the flows from the auxiliary ports do not intersect with the flows from the main ports. Further, the auxiliary scavenging ports are directed further upwardly than the main ports.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.