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公开(公告)号：US5044159A
公开(公告)日：1991-09-03
申请号：US496639
申请日：1990-03-21
CPC分类号： F02B27/04 , Y02T10/146
摘要： In an exhaust system for two-stroke cycle engines, comprising an exhaust pipe whose front end, which is characterised by a constant cross-section, is followed by two or more conical sections, these conical sections are configured as diffusers, which are connected to the front end of the exhaust pipe with its constant cross-section by means of branch pipes of different length, and which open into a common exhaust header at the other end, which header in turn is connected to the exhaust tail pipe comprising a catalytic converter and/or a silencer. This arrangement has the effect that a pressure wave coming from the cylinder is twice reflected as a suction wave arriving at the still open exhaust port at different times due to the difference in pipe length. In this manner the effective duration of the suction wave is prolonged over that of comparable exhaust systems of a known kind.
摘要翻译： 在用于二冲程循环发动机的排气系统中，包括排气管，其前端的特征在于恒定的横截面，后面是两个或更多个锥形部分，这些锥形部分被构造为扩散器，其连接到 排气管的前端通过不同长度的分支管具有恒定的横截面，并且在另一端开口到共同的排气集管，该集管又连接到排气尾管，该排气尾管包括催化转化器 和/或消音器。 这种布置具有这样的效果：由于管长度的差异，来自气缸的压力波作为从不同时间到达静止排气口的吸力波反射两次。 以这种方式，吸入波的有效持续时间比已知类型的排气系统的有效持续时间延长。
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公开(公告)号：US5279266A
公开(公告)日：1994-01-18
申请号：US4269
申请日：1993-01-14
申请人： Klaus Landfahrer , Hans Alten , Karl Wojik
发明人： Klaus Landfahrer , Hans Alten , Karl Wojik
CPC分类号： F02B27/04 , F02F1/22 , F02B2075/025 , Y02T10/146
摘要： In a two-stroke internal combustion engine with at least one cylinder opeg into an exhaust passage with a diffuser-type flare whose shape is determined mainly by that of the lower contour, an optimum flow pattern in the exhaust passage is obtained by providing the exhaust passage with a nozzle-like throat in the immediate vicinity of the cylinder, which is formed by the lower contour and is followed by the diffuser-type flare, either immediately or at a distance.
摘要翻译： 具有一个或多个气缸（1）的二冲程内燃机，排气口（3）从中排出，其具有特别是通过底部轮廓（3b）的成形而形成的扩散器状膨胀。 实现排气口（3）中的最佳流动，即在汽缸（1）之后的排气口（3）具有通过底部轮廓（3b）的成形而形成的喷嘴状限制，并且 扩散器样扩展直接或间隔地连接。
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