公开(公告)号：US5315823A

公开(公告)日：1994-05-31

申请号：US922103

申请日：1992-07-31

申请人： Seiithirou Nishikawa ,  Toshiaki Kikuchi ,  Masumi Kinugawa

发明人： Seiithirou Nishikawa ,  Toshiaki Kikuchi ,  Masumi Kinugawa

IPC分类号： F01N3/22 ,  F02B75/02 ,  F02D41/02 ,  F02D41/14 ,  F02P5/04 ,  F02P5/15 ,  F01N3/00

CPC分类号： F01N3/222 ,  F01N3/22 ,  F02D41/0255 ,  F02D41/1441 ,  F02P5/1506 ,  F01N2430/06 ,  F02B2075/027 ,  F02D41/1456 ,  F02P5/045 ,  Y02T10/26 ,  Y02T10/46

摘要： A control apparatus for speedily warming up a catalyst disposed within an exhaust pipe connected to an internal combustion engine. The control apparatus calculates a demand fuel injection quantity into the engine on the basis of an operating state of said engine, and corrects the calculated demand fuel injection quantity on the basis of a warming-up state of a catalyst provided in an exhaust pipe of the engine so that an air fuel ratio in the engine is repeatedly controlled to a rich side and a lean side in a state that the warming-up of the catalyst is not completed. The control apparatus is equipped with an inhibiting function to inhibit the air fuel ratio from being controlled to the rich side and the lean side when the engine takes an operating state that the injection quantity is set to a rich side with respect to the theoretical air fuel ratio.

摘要翻译： 一种控制装置，用于快速升温设置在与内燃机连接的排气管内的催化剂。 控制装置基于所述发动机的运转状态，计算发动机的需求燃料喷射量，并根据设置在所述发动机的排气管内的催化剂的预热状态来修正所计算出的需求燃料喷射量 发动机，使得在催化剂的升温未完成的状态下，发动机中的空燃比被重复地控制到浓侧和稀侧。 控制装置配备有抑制空燃比被控制到浓侧的倾向的抑制功能，而当发动机处于相对于理论空气燃料的喷射量设定为浓侧的运转状态时 比。

公开(公告)号：US5211011A

公开(公告)日：1993-05-18

申请号：US833651

申请日：1992-02-11

申请人： Seiithirou Nishikawa ,  Toshiaki Kikuchi ,  Masumi Kinugawa

发明人： Seiithirou Nishikawa ,  Toshiaki Kikuchi ,  Masumi Kinugawa

IPC分类号： F01N3/20 ,  F01N3/24 ,  F02B75/02 ,  F02D41/02 ,  F02D41/06 ,  F02D43/00 ,  F02P5/04 ,  F02P5/15

CPC分类号： F01N3/2006 ,  F02D41/024 ,  F02D41/0255 ,  F02P5/1506 ,  F01N2430/06 ,  F02B2075/027 ,  F02D41/1441 ,  F02P5/045 ,  Y02T10/26 ,  Y02T10/46

摘要： A control apparatus for rapidly warming up a catalyst disposed within an exhaust pipe connected to an internal combustion engine. The control apparatus first determines a fuel injection amount and an ignition timing of the engine on the basis of an engine operating condition such as an intake air pressure of the engine and a rotational speed of the engine. The control apparatus is also responsive to temperature information of the catalyst for adjusting the fuel injection amount and the ignition timing in accordance with the catalyst temperature information. When the catalyst temperature does not reach the effective emission-purifying temperature, the control apparatus alternately adjusts the fuel injection amount to a rich amount and a lean amount and further intermittently retards the ignition timing. This injection and ignition control operation allows acceleration of the warming-up of the catalyst to suppress the deterioration of the emissions from the engine.