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1.发明申请公开(公告)号：US20110191005A1
公开(公告)日：2011-08-04
申请号：US13020878
申请日：2011-02-04
申请人： Yasushi Iwazaki , Mie Sasai , Hiroshi Sawada , Hiroshi Miyamoto , Keiji Imamura
发明人： Yasushi Iwazaki , Mie Sasai , Hiroshi Sawada , Hiroshi Miyamoto , Keiji Imamura
摘要： An apparatus for detecting an abnormal air-fuel ratio variation among cylinders of a multi-cylinder internal combustion engine includes: a catalyst that is arranged in an exhaust passage of the multi-cylinder internal combustion engine; a catalyst temperature detecting unit that detects a temperature of the catalyst; and an abnormality detecting unit that detects an abnormal air-fuel ratio variation among the cylinders on the basis of the detected catalyst temperature, wherein the abnormality detecting unit calculates a temperature parameter on the basis of the detected catalyst temperature, and the abnormality detecting unit detects the abnormal air-fuel ratio variation among the cylinders on the basis of the temperature parameter at the time when a predetermined period of time has elapsed after a cold start of the internal combustion engine.
摘要翻译： 一种用于检测多缸内燃机的气缸之间的异常空燃比变动的装置，包括：设置在所述多缸内燃机的排气通路中的催化剂; 催化剂温度检测单元，其检测催化剂的温度; 以及异常检测单元，其基于检测到的催化剂温度来检测气缸之间的异常空燃比变动，其中异常检测单元基于检测到的催化剂温度计算温度参数，异常检测单元检测 基于在内燃机的冷启动之后经过预定时间段时的温度参数，气缸之间的异常空燃比变化。
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2.发明授权公开(公告)号：US08024105B2
公开(公告)日：2011-09-20
申请号：US12416262
申请日：2009-04-01
IPC分类号： F02D41/22
CPC分类号： F01N11/00 , F01N3/10 , F01N2550/02 , F01N2560/06 , Y02T10/47
摘要： An apparatus and a method for detecting abnormal air-fuel ratio variation among cylinders of a multi-cylinder internal combustion engine are provided. The apparatus includes: a catalyst that is provided in an exhaust passage of the multi-cylinder internal combustion engine; a catalyst temperature detection unit that detects a temperature of the catalyst; a catalyst temperature estimation unit that estimates a temperature of the catalyst based on an engine operating state; and an abnormality detection unit that determines whether abnormal air-fuel ratio variation among the cylinders has occurred based on the detected temperature of the catalyst and the estimated temperature of the catalyst.
摘要翻译： 提供一种用于检测多缸内燃机的气缸之间的异常空燃比变动的装置和方法。 该装置包括：设置在多气缸内燃机的排气通路中的催化剂; 催化剂温度检测单元，其检测催化剂的温度; 催化剂温度估计单元，其基于发动机运转状态来估计催化剂的温度; 以及异常检测单元，其基于检测到的催化剂的温度和催化剂的估计温度来判定是否发生了气缸之间的异常空燃比变动。
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3.发明授权公开(公告)号：US08047064B2
公开(公告)日：2011-11-01
申请号：US12393597
申请日：2009-02-26
IPC分类号： G01M15/10
CPC分类号： G01M15/104 , F02D41/0085 , F02D41/1441 , F02D41/1456
摘要： An apparatus or a method for detecting an abnormality of inter-cylinder air-fuel ratio dispersion in a multi-cylinder internal combustion engine according to the invention is equipped with a catalytic element that purifies exhaust gas of hydrogen, a first air-fuel ratio sensor that detects an air-fuel ratio of exhaust gas that has not passed through the catalytic element, a second air-fuel ratio sensor that detects an air-fuel ratio of exhaust gas that has passed through the catalytic element, a device that detects an abnormality of inter-cylinder air-fuel ratio dispersion on the basis of a divergence state of a detected value of a second air-fuel ratio to a lean side from a detected value of a first air-fuel ratio, and a device that forcibly reduces fuel injection amounts in cylinders individually when an abnormality on dispersion is detected by the abnormality detector, detects a divergence state of the detected value of the second air-fuel ratio to the lean side from the detected value of the first air-fuel ratio at this time, and specifies as an abnormal cylinder that one of the cylinders in which a value indicating this divergence state has become smaller than at a time of detection of the abnormality of dispersion.
摘要翻译： 根据本发明的用于检测多缸内燃机中的缸内空燃比分散异常的装置或方法装备有净化氢气废气的催化元件，第一空燃比传感器 检测未通过催化剂元件的废气的空燃比，检测通过催化元件的废气的空燃比的第二空燃比传感器，检测异常的装置 基于第一空燃比对第一空燃比的检测值与第一空燃比的检测值的偏差状态的液压缸间空燃比的分散，以及强制地减少燃料的装置 当由异常检测器检测到异常异常时，分别在气缸中的喷射量，从检测到的va检测到第二空气燃料比的检测值与偏斜侧的发散状态 此时指定第一空燃比，并且指定作为异常气缸，其中指示该发散状态的值的气缸中的一个已经变得比检测到色散异常时的小。
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4.发明申请公开(公告)号：US20090211350A1
公开(公告)日：2009-08-27
申请号：US12393597
申请日：2009-02-26
IPC分类号： G01M15/10
CPC分类号： G01M15/104 , F02D41/0085 , F02D41/1441 , F02D41/1456
摘要： An apparatus or a method for detecting an abnormality of inter-cylinder air-fuel ratio dispersion in a multi-cylinder internal combustion engine according to the invention is equipped with a catalytic element that purifies exhaust gas of hydrogen, a first air-fuel ratio sensor that detects an air-fuel ratio of exhaust gas that has not passed through the catalytic element, a second air-fuel ratio sensor that detects an air-fuel ratio of exhaust gas that has passed through the catalytic element, a device that detects an abnormality of inter-cylinder air-fuel ratio dispersion on the basis of a divergence state of a detected value of a second air-fuel ratio to a lean side from a detected value of a first air-fuel ratio, and a device that forcibly reduces fuel injection amounts in cylinders individually when an abnormality on dispersion is detected by the abnormality detector, detects a divergence state of the detected value of the second air-fuel ratio to the lean side from the detected value of the first air-fuel ratio at this time, and specifies as an abnormal cylinder that one of the cylinders in which a value indicating this divergence state has become smaller than at a time of detection of the abnormality of dispersion.
摘要翻译： 根据本发明的用于检测多缸内燃机中的缸内空燃比分散异常的装置或方法装备有净化氢气废气的催化元件，第一空燃比传感器 检测未通过催化剂元件的废气的空燃比，检测通过催化元件的废气的空燃比的第二空燃比传感器，检测异常的装置 基于第一空燃比对第一空燃比的检测值与第一空燃比的检测值的偏差状态的液压缸间空燃比的分散，以及强制地减少燃料的装置 当由异常检测器检测到异常异常时，分别在气缸中的喷射量，从检测到的va检测到第二空气燃料比的检测值与偏斜侧的发散状态 此时指定第一空燃比，并且指定作为异常气缸，其中指示该发散状态的值的气缸中的一个已经变得比检测到色散异常时的小。
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公开(公告)号：US5198617A
公开(公告)日：1993-03-30
申请号：US761725
申请日：1991-09-18
IPC分类号： H02G9/06 , H02G3/22 , H02G9/10 , H02G15/013
摘要： A distributing box for laying a cable duct in the construction field in is sealed, after laying the cable duct, with mortar and then buried in the ground. Accordingly, setting up the distributing box is simplified. Also, underground water must not permeate the distributing box. In the present invention, therefore, a duct laying fixture is constructed includes a box-shaped barrel of a water-expansible elastic material attached to the bellows type cable duct, and a water-expansible sheet which is stuck on the outer surface of the barrel. The barrel includes a duct mounting port in which the bellows type cable duct is mounted. Ribs are formed on the peripheral wall surface of the port to come into close contact with the outer peripheral surface of the bellows type cable duct. A slit permits spreading the barrel. The sheet is stuck on the outer surface of the barrel after the duct has been passed by spreading the barrel.
摘要翻译： 用于在施工现场敷设电缆管道的分配箱在铺设电缆管道之后，用砂浆密封，然后埋在地下。 因此，简化了分配箱的设置。 而且，地下水不得渗透到配电箱。 因此，在本发明中，管道敷设固定装置包括：附着在波纹管式电缆管道上的可水膨胀弹性材料的盒状筒，以及粘贴在筒体外表面上的水可膨胀片 。 枪管包括安装波纹管式电缆管道的管道安装口。 在端口的周壁面形成有与波纹管式电缆管道的外周面紧密接触的肋。 狭缝允许扩展桶。 在通过扩展枪管通过管道之后，片材卡在枪管的外表面上。
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