公开(公告)号：US5056308A

公开(公告)日：1991-10-15

申请号：US470135

申请日：1990-01-25

申请人： Tateo Kume ,  Michiyasu Yoshida ,  Yoshiaki Kodama ,  Kazuo Koga

发明人： Tateo Kume ,  Michiyasu Yoshida ,  Yoshiaki Kodama ,  Kazuo Koga

IPC分类号： F02D41/14

CPC分类号： F02D41/1443 ,  F02D41/1495 ,  F02D2041/1432 ,  F02D41/1456

摘要： A feedback control system for an air-fuel ratio according to the present invention comprises a first oxygen sensor for detecting the oxygen concentration of exhaust gas flowing through a first exhaust pipe of an internal combustion engine, a second oxygen sensor for detecting the oxygen concentration of the exhaust gas passed through an exhaust gas disposer in a common exhaust passage which is connected with both first and second exhaust pipes of the engine, and an electronic control unit for calculating the amount of fuel supply to each cylinder of the engine in accordance with the oxygen concentration of the exhaust gas detected by means of the first oxygen sensor. The electronic control unit contains therein a correction circuit for correcting the amount of fuel supply to that cylinder of the engine which is associated with the second exhaust pipe, in accordance with the oxygen concentration of the exhaust gas detected by means of the second oxygen sensor.

摘要翻译： 根据本发明的用于空燃比的反馈控制系统包括用于检测流过内燃机的第一排气管的排气的氧浓度的第一氧传感器，用于检测内燃机的第一排气管的氧浓度的第二氧传感器 排气通过与发动机的第一排气管和第二排气管连接的公共排气通道中的废气处理器，以及电子控制单元，用于计算根据该发动机的每个气缸的燃料供给量 通过第一氧传感器检测的废气的氧浓度。 电子控制单元包含校正电路，用于根据通过第二氧传感器检测的排气的氧气浓度来校正与第二排气管相关联的发动机气缸的燃料量。

公开(公告)号：US4835964A

公开(公告)日：1989-06-06

申请号：US145772

申请日：1988-01-19

申请人： Satoru Kume ,  Michiyasu Yoshida ,  Tateo Kume ,  Hiroki Oshima ,  Mitsuhiro Kawagoe ,  Kazuo Koga

发明人： Satoru Kume ,  Michiyasu Yoshida ,  Tateo Kume ,  Hiroki Oshima ,  Mitsuhiro Kawagoe ,  Kazuo Koga

IPC分类号： F01N3/021 ,  F01N3/023 ,  F01N3/035 ,  F01N3/20 ,  F01N3/22 ,  F01N3/30 ,  F01N3/36 ,  F01N7/00 ,  F01N9/00 ,  F02B1/04 ,  F02B3/06 ,  F02D11/08 ,  F02D21/08 ,  F02D41/02 ,  F02D41/08 ,  F02D41/14 ,  F02D41/38 ,  F02D41/40 ,  F02M25/07 ,  G01L19/06

CPC分类号： F01N3/2033 ,  F01N3/0211 ,  F01N3/023 ,  F01N3/035 ,  F01N3/222 ,  F01N3/30 ,  F01N3/36 ,  F01N9/00 ,  F01N9/002 ,  F02D11/08 ,  F02D41/0055 ,  F02D41/0235 ,  F02D41/029 ,  F02D41/08 ,  F02D41/1446 ,  F02D41/38 ,  F02D41/401 ,  F02M26/57 ,  G01L19/0609 ,  F01N2250/02 ,  F01N2330/06 ,  F01N2390/02 ,  F01N2430/02 ,  F01N2610/1453 ,  F01N2900/0422 ,  F02B1/04 ,  F02B3/06 ,  F02B37/00 ,  F02D2041/0022 ,  F02D2200/0406 ,  F02D2200/0812 ,  F02D2250/32 ,  F02D41/408 ,  F02M26/15 ,  Y02T10/26 ,  Y02T10/42 ,  Y02T10/44 ,  Y02T10/47

摘要： Flammable fine particles (particulates) consisting principally of carbon and hydrocarbons are discharged from a diesel engine to its exhaust system. A diesel particulate oxidizer (DPO) is disposed in the exhaust passage for collecting and burning the particulates without allowing the particulates to be discharged directly to the atmosphere. This DPO comprises a ceramic foam with catalyst. When the quantity of particulates collected is above a predetermined value, the DPO will undergo clogging. To prevent this, a high temperature gas containing oxygen is fed to the DPO to burn (regenerate) the collected particulates. In order to accelerate the normal regeneration of the DPO, there are provided a regeneration means for making a retard control of the fuel injection timing in the diesel engine, and a regeneration timing control means for controlling the operation of the regeneration means. Further, there is provided a regeneration timing detection means for detecting the regeneration timing of the DPO.

摘要翻译： 主要由碳和烃组成的易燃微粒（颗粒）从柴油发动机排放到其排气系统。 柴油颗粒氧化剂（DPO）设置在排气通道中用于收集和燃烧颗粒而不使颗粒直接排放到大气中。 该DPO包括具有催化剂的陶瓷泡沫。 当收集的颗粒物的数量超过预定值时，DPO会发生堵塞。 为了防止这种情况，含氧气体的高温气体被供给到DPO以燃烧（再生）所收集的微粒。 为了加速DPO的正常再生，提供了一种用于对柴油发动机中的燃料喷射正时进行延迟控制的再生装置，以及用于控制再生装置的运转的再生定时控制装置。 此外，提供了一种用于检测DPO的再生定时的再生定时检测装置。