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2. 发明授权

US5154894A Variable cross section catalytic converter 失效
标题翻译：可变截面催化转化器
公开(公告)号：US5154894A
公开(公告)日：1992-10-13
申请号：US747065
申请日：1991-08-19
申请人： Glen R. MacFarlane , Jordan R. Lee , Ronald J. Cantrell
发明人： Glen R. MacFarlane , Jordan R. Lee , Ronald J. Cantrell
IPC分类号： F01N3/20 , F01N3/28
CPC分类号： F01N3/20 , F01N3/28
摘要： A catalytic converter for use in the exhaust system of an internal combustion engine having a rigid outer canister with a catalyst support disposed therein for movement between a first position adjacent in inlet end of the canister and a second position located in spaced relationship with said inlet end. In its first position, the substrate seals the inlet thereby forcing the entire exhaust flow through the fluid flow passages within the catalyst support which are in axial alignment with the converter inlet. The effect of forcing the totality of flow reduced volume of the substrate to the entire thermal energy of the exhaust stream thereby assisting in a reduction in the catalyst light-off time. Following catalyst light-off, the catalyst support is moved to its second, spaced position in which the entire frontal area of the converter is exposed to the exhaust flow thereby lowering backpressure of the converter and preventing converter overtemperature problems.
摘要翻译：一种用于内燃机的排气系统的催化转化器，其具有刚性外罐，其中设置有催化剂载体，用于在与所述罐的入口端相邻的第一位置与位于所述入口端间隔开的第二位置之间移动。在其第一位置，基板密封入口，从而迫使整个排气流过催化剂载体内的与转换器入口轴向对准的流体流动通道。迫使整体流动减少衬底的体积对排气流的整个热能的影响，从而有助于催化剂熄灭时间的减少。在催化剂熄灭之后，催化剂载体移动到其第二间隔位置，在该位置，转换器的整个正面区域暴露于排气流，从而降低转换器的背压并防止转换器过热问题。

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