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21. 发明授权

US06637194B2 Exhaust emission control for engine 有权
公开(公告)号：US06637194B2
公开(公告)日：2003-10-28
申请号：US09958842
申请日：2001-10-15
申请人： Masatomo Kakuyama , Shigeaki Kakizaki , Osamu Matsuno
发明人： Masatomo Kakuyama , Shigeaki Kakizaki , Osamu Matsuno
IPC分类号： F01N300
CPC分类号： B01D53/9454 , B01D53/9495 , B01D2255/908 , F01N11/007 , F01N2550/02 , F01N2900/0421 , F01N2900/0422 , F02D41/0295 , F02D41/14 , F02D41/1441 , F02D41/1456 , F02D2200/0814 , F02D2200/0816 , Y02T10/22 , Y02T10/47
摘要： An engine exhaust emission control arrangement has a catalytic converter including a three-way catalyst. A first oxygen sensor detects an oxygen concentration of exhaust gas upstream of the catalyst and a second oxygen sensor detects an oxygen concentration of exhaust gas downstream of the catalyst. A microprocessor calculates a specific period oxygen storage amount of a catalyst while the upstream oxygen concentration is higher than the stoichiometric concentration and the downstream oxygen concentration is in a predetermined concentration range which has a value approximately equal to the stoichiometric oxygen concentration. The microprocessor also calculates a specific period oxygen release amount of a catalyst while the upstream oxygen concentration is lower than the stoichiometric concentration and the downstream oxygen concentration produces an indication of a predetermined concentration range. A specific period oxygen storage amount is sampled at a time at which the downstream oxygen concentration becomes greater than the predetermined concentration range as a maximum oxygen storage amount and a specific period oxygen release amount is sampled at a time at which the downstream oxygen concentration becomes smaller than the predetermined concentration range as a maximum oxygen release amount. The engine air-fuel ratio is controlled to cause the oxygen storage amount of the catalyst to coincide with a target value which is set at approximately half of an average value of the maximum oxygen storage amount and the maximum oxygen release amount.

22. 发明授权

US06619032B2 Engine exhaust purification device 有权
公开(公告)号：US06619032B2
公开(公告)日：2003-09-16
申请号：US09958935
申请日：2001-10-16
申请人： Masatomo Kakuyama , Shigeaki Kakizaki , Osamu Matsuno
发明人： Masatomo Kakuyama , Shigeaki Kakizaki , Osamu Matsuno
IPC分类号： F01N300
CPC分类号： F02D41/0295 , F01N11/00 , F01N11/007 , F01N2550/02 , F01N2570/16 , F01N2900/0422 , F02D41/1441 , F02D41/187 , F02D2200/0814 , F02D2200/0816 , Y02T10/47
摘要： A microprocessor (6) computes an oxygen storage amount of a catalyst (3) separately for a high speed component and a low speed component in accordance with real characteristic. A target air-fuel ratio of an engine (1) is computed and air-fuel ratio control of the engine (1) it is performed so that the high speed component is constant. The deterioration of the catalyst (3) is determined by integrating the high speed component of the oxygen storage amount computed during the air-fuel ratio control process for a predetermined number of times, and comparing its average value with a determining value. The oxygen storage amount of the high speed component which is sensitive to catalyst deterioration is integrated so as to obtain a highly precise determining result to determine the deterioration.

23. 发明授权

US06564544B2 Engine exhaust purification arrangement 有权
公开(公告)号：US06564544B2
公开(公告)日：2003-05-20
申请号：US09959405
申请日：2001-10-24
申请人： Masatomo Kakuyama , Shigeaki Kakizaki , Osamu Matsuno
发明人： Masatomo Kakuyama , Shigeaki Kakizaki , Osamu Matsuno
IPC分类号： F01N300
CPC分类号： F01N11/007 , F01N2550/02 , F02D41/0295 , F02D41/126 , F02D2200/0814 , F02D2200/0816 , Y02T10/22 , Y02T10/47
摘要： A controller (6) computes an oxygen storage amount of a catalyst (3) separately as a high speed component/amount and a low speed component/amount according to predetermined release/adsorption characteristics. A target air-fuel ratio of an engine is computed and the air-fuel ratio of the engine is controlled so that the high speed component is maintained constant. The target air-fuel ratio of the engine (1) is limited by an upper limiter and lower limiter so that the high speed component converges to the target value, an excessively large variation of the air-fuel ratio is prevented, and impairment of drivability and fuel cost-performance is also prevented. Further, after lean running due to fuel cut, etc., the lower limiter is lowered to the rich side, and the oxygen storage amount is rapidly induced to converge on the target value.

24. 发明授权

US5729971A Engine catalyst temperature estimating device and catalyst diagnostic device 失效
标题翻译：发动机催化剂温度估计装置及催化剂诊断装置
公开(公告)号：US5729971A
公开(公告)日：1998-03-24
申请号：US735872
申请日：1996-10-23
申请人： Osamu Matsuno , Hiroshi Abe
发明人： Osamu Matsuno , Hiroshi Abe
IPC分类号： F01N3/18 , B01D53/86 , F01N3/20 , F01N9/00 , F01N11/00 , G01K13/00
CPC分类号： F01N9/005 , F01N11/00 , F01N11/005 , F01N11/007 , F01N2550/02 , F01N2900/0422 , Y02T10/47
摘要： The suitability of diagnosing deterioration of a catalyst which purifies engine exhaust is determined based on estimated catalyst temperature. A value depending on condensation in the catalyst, and a value corresponding to a state without condensation, are respectively set as a reference heat amount for a cold start and a hot start. A catalyst temperature during steady state running condition of the engine is also computed based on the engine running conditions. The heat amount given by the exhaust to the catalyst is computed from this catalyst temperature and the engine intake air volume. When the total heat amount given to the catalyst after engine startup is equal to or less than the reference heat amount, a catalyst temperature estimated value is set to a fixed value. In all other cases, the catalyst temperature estimated value is calculated by a first order delay equation having catalyst temperature during steady running conditions as a parameter. In this way, the catalyst temperature is estimated with high precision.
摘要翻译：基于估计的催化剂温度来确定净化发动机排气的催化剂的劣化的诊断的适用性。分别设定取决于催化剂中的冷凝的值和对应于无冷凝状态的值作为冷启动和热启动的参考热量。发动机稳态运行状态下的催化剂温度也根据发动机运行条件进行计算。从催化剂温度和发动机进气量计算由排气给催化剂的热量。当发动机起动后的催化剂的总热量等于或小于基准热量时，将催化剂温度推定值设定为固定值。在所有其他情况下，催化剂温度估计值通过在稳定运行条件下具有催化剂温度的一阶延迟方程作为参数来计算。以这种方式，以高精度估计催化剂温度。

25. 发明授权

US5440921A Device for detecting misfire of internal combustion engine 失效
标题翻译：用于检测内燃机失火的装置
公开(公告)号：US5440921A
公开(公告)日：1995-08-15
申请号：US960819
申请日：1992-10-14
申请人： Osamu Matsuno , Takashi Aramaki , Katsuhiko Kawamura , Jun Nakanowatari
发明人： Osamu Matsuno , Takashi Aramaki , Katsuhiko Kawamura , Jun Nakanowatari
IPC分类号： G01M15/11 , G01N15/00
CPC分类号： G01M15/11
摘要： In a device for judging of misfire of an internal combustion engine from a variation of crankshaft rotational speed during combustion stroke of each cylinders, a measurement period for measurement of crankshaft rotational speed at a cylinder is set by counting a predetermined number of first signals indicative of a predetermined rotational angle of a crankshaft firstly on the basis of a second signal indicative of a reference position of a camshaft and secondly and onward on the basis of the first signals used for setting the previous measurement section.
摘要翻译：在用于根据每个气缸的燃烧冲程期间的曲轴转速的变化来判断内燃机的失火的装置中，通过计算指示数量的预定数量的第一信号来设定用于测量气缸上的曲轴转速的测量周期首先基于表示凸轮轴的基准位置的第二信号，并且基于用于设定前一测量部分的第一信号，二次并向前的曲轴的预定旋转角度。

26. 发明授权

US5408866A Leak diagnosis system for evaporative emission control system 失效
标题翻译：蒸发排放控制系统泄漏诊断系统
公开(公告)号：US5408866A
公开(公告)日：1995-04-25
申请号：US153516
申请日：1993-11-17
申请人： Katsuhiko Kawamura , Osamu Matsuno , Yoichi Kishimoto
发明人： Katsuhiko Kawamura , Osamu Matsuno , Yoichi Kishimoto
IPC分类号： F02M25/08 , F02M33/02 , G01M3/26
CPC分类号： F02M25/0809
摘要： A leak diagnosis system which diagnoses a leak condition of an evaporative emission control system for an internal combustion engine. The leak diagnosis system detects a changing speed of a pressure in the evaporative emission control system for plural times during when the evaporative emission control system is put into a negative pressure condition by the negative pressure of the engine and is then closed by a purge-cut valve. The leak diagnosis system diagnoses a leak condition of the evaporative emission control system according to the detected plural pressure changing speeds while taking a fuel condition in the evaporative emission control system into consideration on the basis of the detected plural pressure changing speeds. Accordingly, the leak condition in the evaporative emission control system is accurately diagnosed without being effected by the fuel condition.
摘要翻译：一种用于诊断内燃机的蒸发排放控制系统的泄漏状况的泄漏诊断系统。泄漏诊断系统在蒸发排放控制系统通过发动机的负压进入负压状态期间，在蒸发排放控制系统中检测压力的变化速度多次，然后通过吹扫切断阀。泄漏诊断系统根据检测到的多个压力变化速度，在根据检测出的多个压力变化速度考虑蒸发排放控制系统中的燃料条件的同时，对蒸发排放控制系统的泄漏状况进行诊断。因此，蒸发排放控制系统的泄漏状况被准确地诊断而不受燃料条件的影响。

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