Two-cycle engine
US4995354A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1989 |
| Grant date | Feb 26, 1991 |
| Priority date | — |
| Expiry date | Dec 13, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T10/12
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
A two-cycle engine having a fuel injector, scavenge port and an exhaust port is provided with a scavenge pump for supplying scavenging air into a cylinder. An exhaust rotary valve is connected to the exhaust port to open and close the port. Similarly, a scavenge rotary valve is connected to the scavenge port to open and close the port. Engine operating condition including engine speed and degree of depressing the accelerator pedal, representing the engine load, is inputted to a control unit, which variably controls the timings of opening and closing the exhaust and scavenge rotary valves in accordance with the engine operating condition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.