Stratified scavenging two-stroke engine
US9206736B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 9, 2013 |
| Grant date | Dec 8, 2015 |
| Priority date | — |
| Expiry date | Mar 28, 2034 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02M35/10275
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A stratified scavenging two-stroke engine includes a first scavenging passage that extends from a first scavenging intake that opens to the inside of the crankcase to a first scavenging port that opens to the inside of a cylinder, and a second scavenging passage that extends from a second scavenging intake that opens to the inside of the crankcase to a second scavenging port that opens to the inside of the cylinder. The first and second passages are formed so as to communicate with each other via a communicating portion. An air passage is connected to the first passage at a position closer to the first scavenging intake than the communicating portion. A first check valve inhibits a flow from the first passage to the inside of the crankcase, and a second check valve inhibits a flow from the first passage through the air passage to the outside.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.