2-cycle engine

Abstract

Abstract PURPOSE:To prevent fuel blow-by as well as to improve scavenging air efficiency in such a way that residual gas is scavenged by fresh aeration composed of air, then fuel is put to be injected. CONSTITUTION:Provision of air intake pipes 16, 17 to lead air into crank chambers 6, 7, scavenging air passages 22, 23, 24, 25 to lead air from both crank chambers 6, 7 into plural scavenging air ports 26, 27, 28, 29, and a fuel injecting valve 30 installed on part of said scavenging air ports facilitates to hasten the opening timing of other scavenging air ports 27, 28, 29 than that of the scavenging air port 26 which is installed said fuel injecting valve 30. Said constitution makes it possible to first scavenge residual gas by fresh aeration composed of air, then to inject fuel, to improve the scavenging air efficiency and to prevent fuel blowby.

Inventors

• 👤 Masaaki Noguchi
• 👤 Yukiyasu Tanaka
• 👤 Taro Tanaka
• 👤 Nobukatsu Ueshima

Bibliographic Details