Stratified scavenging two-cycle engine
US6216650A · kind A · utility
Assignees
Inventor
Key dates
| Filing date | Apr 14, 1999 |
| Grant date | Apr 17, 2001 |
| Priority date | — |
| Expiry date | Apr 14, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF02D2400/04
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a stratified scavenging two-cycle engine, in which control of an air flow rate provides favorable acceleration performance and can prevent deterioration of exhaust gas. The stratified scavenging two-cycle engine includes a scavenging flow passage (3) for connection between a cylinder chamber (4a) and a crank chamber (1a), an air flow passage (2) connected to the scavenging flow passage (3), an air flow rate control means (12) for controlling a flow rate of air fed to the scavenging flow passage (3) from the air flow passage (2), and a fuel mixture flow rate controller (11) for controlling a flow rate of a fuel mixture drawn into the crank chamber (1a) from a fuel mixture flow passage (10). The air flow rate controller (12) throttles an air flow rate at the time of acceleration. Alternatively, the air flow rate controller (12) is opened later than the mixture flow rate controller (11) at the time of acceleration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.