公开(公告)号：US4250860A

公开(公告)日：1981-02-17

申请号：US13993

申请日：1979-02-22

申请人： Francesco Cavallino ,  Pasquale Martinez ,  Roberto Schiavuzzi ,  Michele Allione

发明人： Francesco Cavallino ,  Pasquale Martinez ,  Roberto Schiavuzzi ,  Michele Allione

IPC分类号： F02M1/04 ,  F02M1/16 ,  F02M7/133 ,  F02M23/08 ,  F02M25/07 ,  F02M23/10

CPC分类号： F02M23/085 ,  F02M1/04 ,  F02M1/16 ,  F02M26/42 ,  F02M7/133 ,  Y02T10/146

摘要： A spark ignition internal combustion engine having an exhaust emission control system including an air pump driven by the engine to pump fresh air directly into the exhaust duct in order to promote a further combustion of partly burnt components in the gases coming from the combustion chambers, excess air pressure being released by a pressure relief valve into an air filter for the induction air; the system also comprises an exhaust gas recirculating system comprising a pneumatic valve which opens, when the conditions are appropriate, to draw off a proportion of the exhaust gases from the exhaust side of the engine and admit them to the induction side of the engine; in addition there is a system for admitting supplementary air to the induction manifold downstream of the carburettor during engine overrun conditions except when the engine is cold, and the carburettor is provided with supplementary pumps and valves which only function when the engine is cold, being inhibited as the engine approaches its normal working temperature.

摘要翻译： 具有废气排放控制系统的火花点火内燃机，其包括由发动机驱动的空气泵，以将新鲜空气直接泵送到排气管道中，以促进来自燃烧室的气体中部分燃烧的组分的进一步燃烧， 空气压力由压力释放阀释放到用于感应空气的空气过滤器中; 该系统还包括排气再循环系统，该排气再循环系统包括气动阀，其在条件适当时打开一部分来自发动机的排气侧的废气并将其引入发动机的感应侧; 另外还有一个系统，用于在发动机超载条件下，在发动机超载条件下，向化油器下游的辅助空气进行辅助空气，除非发动机处于冷却状态，并且化油器设有仅在发动机冷时起作用的补充泵和阀门 当发动机接近其正常工作温度时。

公开(公告)号：US4269029A

公开(公告)日：1981-05-26

申请号：US13994

申请日：1979-02-22

申请人： Francesco Cavallino ,  Pasquale Martinez ,  Michele Allione ,  Roberto Schiavuzzi

发明人： Francesco Cavallino ,  Pasquale Martinez ,  Michele Allione ,  Roberto Schiavuzzi

IPC分类号： F01N3/30 ,  F02M1/04 ,  F02M7/093 ,  F02M23/08 ,  F02M25/07 ,  F02M23/10 ,  F01N3/10

CPC分类号： F02M23/085 ,  F01N3/30 ,  F02M1/04 ,  F02M26/00 ,  F02M26/42 ,  F02M7/093 ,  F02M2026/002 ,  Y02T10/146 ,  Y02T10/20

摘要： A four cylinder spark ignition internal combustion engine has an exhaust emission control system including means for admitting fresh air into the exhaust system in order to promote a further combustion of partly burnt components in the gases coming from the combustion chambers, this means include a "reed" valve connected to the exhaust ports leading from the first and fourth cylinders (numbering from one end of the engine) through internal passages within the cylinder head; the system also comprises an exhaust gas recirculating system comprising a pneumatic valve which opens, when the conditions are appropriate, to draw off a proportion of the exhaust gases from the exhaust side of the engine and admit them to the induction side of the engine taking exhaust gases from branches of the exhaust manifold carrying exhaust gases from the second and third cylinders; in addition there is a system for admitting supplementary air to the induction manifold downstream of the carburettor during engine overrun conditions except when the engine is cold, and the carburettor is provided with supplementary pumps and valves which only function when the engine is cold, being inhibited as the engine approaches its normal working temperature.

摘要翻译： 四缸火花点火内燃机具有废气排放控制系统，其包括用于将新鲜空气引入排气系统中的装置，以便促进来自燃烧室的气体中部分燃烧的组分的进一步燃烧，这意味着包括“芦苇 “连接到从第一和第四气缸（从发动机的一端编号）引出的排气口通过气缸盖内的内部通道连接; 该系统还包括排气再循环系统，该排气再循环系统包括气动阀，当适合条件时，气动阀能够从发动机排气侧排出一部分废气，并将其排入发动机的进气侧，排气 来自排气歧管的分支的气体携带来自第二和第三气缸的废气; 另外还有一种系统，用于在发动机超载条件下，在发动机超载条件下，在化油器下游的辅助空气进入辅助空气，除非发动机处于冷态，并且化油器设置有只在发动机冷时起作用的辅助泵和阀门 当发动机接近其正常工作温度时。

公开(公告)号：US4250707A

公开(公告)日：1981-02-17

申请号：US970075

申请日：1978-12-14

申请人： Francesco Cavallino ,  Pasquale Martinez ,  Stefano Vaccaneo ,  Michele Allione

发明人： Francesco Cavallino ,  Pasquale Martinez ,  Stefano Vaccaneo ,  Michele Allione

IPC分类号： F01N3/34 ,  F02D37/02 ,  F02M1/04 ,  F02M7/133 ,  F02M23/08 ,  F02M25/07 ,  F02P5/10 ,  F02M23/10 ,  F01N3/10

CPC分类号： F02D37/02 ,  F01N3/34 ,  F02M1/04 ,  F02M23/085 ,  F02M26/42 ,  F02M7/133 ,  F02P5/106 ,  F02M2026/002 ,  F02M2026/004 ,  Y02T10/146 ,  Y02T10/20

摘要： An exhaust emission control system for a spark ignition internal combustion engine comprises a first pressure sensitive valve for recycling a proportion of the exhaust gases from the exhaust to the induction when the engine is warm, being inhibited when the engine is cold, valves for admitting a small amount of fresh air to the exhaust manifold, a second pressure sensitive valve for admitting fresh air to the induction manifold downstream of the carburettor when the engine is warm, being closed when the engine is cold and when the starter motor is energized, a first fuel/air mixture enrichment valve in the carburettor sensitive to induction manifold pressure and de-sensitized when the engine is cold, a second fuel/air mixture enrichment valve sensitive to induction manifold pressure and de-sensitized when the engine is hot, and a vacuum advance delay which is by-passed when the engine is warm.

摘要翻译： 一种用于火花点火内燃机的废气排放控制系统包括：第一压力敏感阀，用于在发动机冷却时将来自排气的一部分排气回收到感应，当发动机冷却时被抑制，用于接纳 少量的新鲜空气到排气歧管，第二压敏阀，用于当发动机冷却时将化油器下游的新鲜空气引入化油器下游，当发动机冷却时和当起动器电动机通电时，第一压力敏感阀，第一 化油器上的燃料/空气混合物浓缩阀对于感应歧管压力敏感，当发动机冷时敏感，第二燃料/空气混合物浓缩阀对感应歧管压力敏感，并且在发动机处于热状态时对其进行去敏化;以及真空 发动机温暖时旁路的提前延时。