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1.发明授权
公开(公告)号：US5936152A
公开(公告)日：1999-08-10
申请号：US889153
申请日：1997-07-07
摘要： Detection of abnormalities of an idle speed control system is performed based on whether a deviation of an on-idle engine speed from a target engine speed is within a critical range which is changed so as to make the idle speed control system harder to be judged abnormal when the engine is in a lapped state where the engine is apt to change speed than when in a green state where the engine is hardly changeable in speed.
摘要翻译： 怠速控制系统的异常检测基于怠速发动机转速与目标发动机转速的偏差是否在改变的临界范围内，使怠速控制系统难以判断为异常 当发动机处于发动机容易改变速度的重叠状态时，当发动机的速度几乎不变化的绿色状态时。
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2.发明授权Valve operation verification system for verifying valve operation of valve disposed in hot gas flow passage 失效阀门操作验证系统，用于验证热气流通道中阀门的阀门操作
公开(公告)号：US6035835A
公开(公告)日：2000-03-14
申请号：US980442
申请日：1997-11-28
申请人： Shingo Shigihama , Tetsushi Hosokai , Tamotsu Kamakura , Katsuhiko Sakamoto , Futoshi Nishioka , Masanobu Kotoku , Kazuhiro Shinmoto
发明人： Shingo Shigihama , Tetsushi Hosokai , Tamotsu Kamakura , Katsuhiko Sakamoto , Futoshi Nishioka , Masanobu Kotoku , Kazuhiro Shinmoto
IPC分类号： F02M25/07
摘要： A valve operation verifying system for making verification of valve operation of an EGR valve of a type having a diaphragm elastically deformable according to operating conditions of an engine to admit controlled amounts of exhaust gas that is recirculated into an intake air stream which verifies, on a basis of gas pressure in an EGR passage, whether the diaphragm remains elastically deformable as specified and whether a pressure sensor remains free from freezing, and executes the verification of valve operation of the EGR valve on a basis of a change in the gas pressure in the EGR passage when the EGR valve opens and when it closes, and when the temperature of ambient air is lower than a critical point, verifying that the diaphragm remains elastically deformable as specified and that said pressure sensor is free from freezing.
摘要翻译： 一种阀操作验证系统，用于验证具有根据发动机的操作条件可弹性变形的隔膜的类型的EGR阀的阀操作，以允许再循环到进气流中的受控量的废气，所述排气在 基于EGR通路中的气体压力，隔膜是否按规定保持弹性变形，以及压力传感器是否保持冷冻，并且基于气体压力的变化来执行EGR阀的阀操作的验证 当EGR阀打开时和当其关闭时，当环境空气的温度低于临界点时，确认隔膜保持弹性变形，并且所述压力传感器没有冻结。
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3.发明授权System for detecting deterioration of exhaust gas purifying catalyst for automobile engine 失效用于检测汽车发动机废气净化催化剂劣化的系统
公开(公告)号：US5979160A
公开(公告)日：1999-11-09
申请号：US889154
申请日：1997-07-07
CPC分类号： F01N11/007 , F01N2550/02 , F01N2900/0422 , Y02T10/47
摘要： A diagnosis of deterioration and/or normality of an exhaust gas purifying catalyst is made by comparing a ratio of reversal frequencies of outputs from oxygen sensors disposed on opposite sides of the exhaust gas purifying catalyst with a threshold ratio. Discrimination is performed on both normality and deterioration in a standard gas quantity zone, on only normality in a large gas quantity zone, and on only deterioration in a small gas quantity zone, and nothing is made in an extra large gas quantity zone.
摘要翻译： 废气净化催化剂的劣化和/或正常性的诊断是通过比较设置在排气净化催化剂的相对侧的氧传感器的输出的反转频率与阈值比的比率来进行的。 对标准气体区域的正常性和劣化进行歧视，仅在大气体区域中仅为正常状态，并且仅在小气体量区域中的恶化，并且在超大气体量区域中不进行歧视。
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