| 摘要 |
PURPOSE:To facilitate the start-up with low-quality fuel by providing an ultrasonic fuel atomizer separately from the Venturi section of a carburetor, connecting the inlet of the atomizing chamber to an air clearner, connecting the outlet to the vicinity of the terminal of a scavenging path, and providing a heater between them. CONSTITUTION:In a two-cycle engine for low-quality liquid fuel, an ultrasonic fuel atomizer F is provided separately from a Venturi section 25 of a carburetor 19, and the ultrasonic fuel atomizer F is provided with an ultrasonic wave generator 31 in an ultrasonic fuel atomizing chamber 29. The inlet 33 of the ultrasonic fuel atomizing chamber 29 is communicated to an air cleaner 20, and the outlet 34 of the ultrasonic fuel atomizer 29 is communicated to the vicinity of the terminal of a scavenging path via an outflow path 39 not via an intake path and a crank chamber 17. In addition, a fuel gasification promoting heater 22 is provided on a path from the inlet 21 of the air cleaner 20 to the terminal of the outflow path 39 via the ultrasonic fuel atomizing chamber 29. Then, the air heated by the heater 22 and the low-quality fuel stored in the carburetor 19 is mixed and fed to the crank chamber of the engine. |
