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1. 发明授权

US4237831A Two-cycle engine 失效
标题翻译：双循环发动机
公开(公告)号：US4237831A
公开(公告)日：1980-12-09
申请号：US961369
申请日：1978-11-16
申请人： Masaaki Noguchi , Taro Tanaka , Norikatsu Uejima , Yukiyasu Tanaka, deceased , by Koichiro Tanaka, successor , by Mihoko Miyazaki, successor
发明人： Masaaki Noguchi , Taro Tanaka , Norikatsu Uejima , Yukiyasu Tanaka, deceased , by Koichiro Tanaka, successor , by Mihoko Miyazaki, successor
IPC分类号： F01B11/00 , F02B1/12 , F02B3/06 , F02B75/02 , F02B25/08 , F02B25/20
CPC分类号： F02B1/12 , F01B11/00 , F02B2075/025 , F02B3/06
摘要： A two-cycle engine including first set of passages formed outside a cylinder connecting a first crank case with scavenging ports for feeding air-fuel mixtures from the first crank case to the cylinder, second set of passages formed outside the cylinder connecting a second crank case with the scavenging ports for feeding air-fuel mixtures from the second crank case to the cylinder, and scavenging gas merging chamber cooperative with the first and second sets of passages and located upstream of the scavenging ports for restricting flow of air-fuel mixtures in vicinity of the scavenging ports. First and second pistons are mounted in opposed relation to each other in the cylinder, the first piston opening and closing an exhaust port and the second piston opening and closing the scavenging ports. The scavenging ports are formed substantially tangentially of the cylinder in a plane normal to the latter, so charges of mixtures gently introduced into the cylinder flow along the top of the second piston in vortical form and the mixtures thus introduced and burned gases remaining in the cylinder are arranged in stratified relation. Fuel in the mixtures in the boundary of the two stratified masses is heated by the heat of the burned gases and the heat caused by the compression stroke of the pistons and has its temperature raised producing radicals of C.sub.2, CH, CHO, OOH and H. These radicals provide multitude of sources of ignitiion enabling compression-ignition of the mixtures to be effected.
摘要翻译：一种双循环发动机，其包括形成在气缸外部的第一组通道，所述第一组通道将第一曲柄箱与用于将空气 - 燃料混合物从第一曲柄箱供给到气缸的扫气口连接，第二组通道形成在气缸外部，连接第二曲轴箱具有用于将空气 - 燃料混合物从第二曲轴箱输送到气缸的扫气口，以及清扫气体合流室与第一和第二组通道协作并位于扫气口的上游，以限制附近的空气 - 燃料混合物的流动的清理港口。第一活塞和第二活塞在气缸中彼此相对安装，第一活塞打开和关闭排气口，第二活塞打开和关闭扫气口。清扫口在垂直于后者的平面中基本上与圆筒相切地形成，因此轻轻地引入气缸中的混合物的电荷沿涡流形式沿着第二活塞的顶部流动，并且由此引入的混合物和残留在气缸中的燃烧气体以分层关系排列。两层分层边界混合物中的燃料被燃烧气体的热量和活塞的压缩冲程引起的热量加热，并使其温度升高，产生C2，CH，CHO，OOH和H的自由基。这些自由基提供了许多点燃源，使压缩点燃的混合物得以实现。

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