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1.发明授权
公开(公告)号：US5485596A
公开(公告)日：1996-01-16
申请号：US20831
申请日：1993-02-22
CPC分类号： F02M25/0809
摘要： An evaporative fuel-processing system for an internal combustion engine, comprises an evaporative emission control system in which a first control valve is arranged across an evaporative fuel-guiding passage extending between a fuel tank and a canister, a second control valve across a purging passage extending between the canister and the intake system of the engine, and a third control valve at an air inlet port of the canister, respectively. An external diagnostic device is humanly operatable for diagnosing operating conditions of the engine and the vehicle. An ECU is responsive to an output from an external diagnostic device which diagnoses operating conditions of the engine, for determining whether there is an abnormality in the evaporative emission control system, based upon an output from the tank internal pressure sensor, which is obtained when the evaporative emission control system has been brought into the predetermined negatively pressurized state, when the engine is in a predetermined operating condition.
摘要翻译： 一种用于内燃机的蒸发燃料处理系统，包括蒸发排放控制系统，其中第一控制阀跨越在燃料箱和罐之间延伸的蒸发燃料引导通道，跨过清洗通道的第二控制阀 在所述罐和所述发动机的进气系统之间延伸，以及分别在所述罐的进气口处的第三控制阀。 外部诊断装置可人工操作，用于诊断发动机和车辆的运行状况。 ECU响应于外部诊断装置的输出，该外部诊断装置诊断发动机的运行状况，用于基于来自罐内部压力传感器的输出来确定蒸发排放控制系统是否存在异常，该输出是当 当发动机处于预定操作状态时，蒸发排放控制系统已经进入预定的负压状态。
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2.发明授权
公开(公告)号：US5398662A
公开(公告)日：1995-03-21
申请号：US20838
申请日：1993-02-22
CPC分类号： F02M25/0809 , F02D2200/0606
摘要： An evaporative fuel-processing system for an internal combustion engine, incorporates an evaporative emission control system in which a first control valve is arranged across an evaporative fuel-guiding passage extending between a fuel tank and a canister, a second control valve across a purging passage extending between the canister and the intake system of the engine, and a third control valve at an air inlet port of the canister, respectively. An ECU generates operation command signals to the first to third control valves for closing or opening the same to bring the evaporative emission control system into a predetermined negatively pressurized state. The ECU is responsive to an output from a parameter sensor which detects at least one of vehicle speed, temperature within the fuel tank, and an amount of fuel within the fuel tank, for determining whether there is an abnormality in the evaporative emission control system, based upon an output from a tank internal pressure sensor. The output is obtained when the evaporative emission control system has been brought into the predetermined negatively pressurized state, when the value of at least one parameter detected by the parameter sensor falls within a predetermined range.
摘要翻译： 一种用于内燃机的蒸发燃料处理系统包括蒸发排放控制系统，其中第一控制阀跨越在燃料箱和罐之间延伸的蒸发燃料引导通道，跨过清洗通道的第二控制阀 在所述罐和所述发动机的进气系统之间延伸，以及分别在所述罐的进气口处的第三控制阀。 ECU向第一至第三控制阀产生操作命令信号以关闭或打开该控制阀，以使蒸发排放控制系统处于预定的负压状态。 ECU响应于检测汽车速度，燃料箱内的温度和燃料箱内的燃料量中的至少一个的参数传感器的输出，用于确定蒸发排放控制系统中是否存在异常， 基于来自罐内部压力传感器的输出。 当由参数传感器检测到的至少一个参数的值落在预定范围内时，当蒸发排放控制系统已经进入预定的负压状态时，获得输出。
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公开(公告)号：USRE35054E
公开(公告)日：1995-10-10
申请号：US270778
申请日：1994-07-05
申请人： Masataka Chikamatsu , Masayoshi Yamanaka , Hiroshi Maruyama , Shigetaka Kuroda , Kazutomo Sawamura
发明人： Masataka Chikamatsu , Masayoshi Yamanaka , Hiroshi Maruyama , Shigetaka Kuroda , Kazutomo Sawamura
CPC分类号： F02M25/0809
摘要： A tank internal pressure-detecting device for an internal combustion engine having an evaporative emission control system for controlling purging of evaporative fuel generated in a fuel tank thereof into an intake system thereof. An ECU interrupts purging of evaporative fuel by the evaporative emission control system for a predetermined period of time after the engine is started. The ECU causes control valves of the evaporative emission control system to open the interior of the fuel tank to the atmosphere, and stores a value of pressure within the fuel tank detected by a tank internal pressure sensor as a reference value while the purging is being interrupted and at the same time the interior of the fuel tank is opened to the atmosphere. The ECU corrects an output value of the tank internal pressure sensor, based upon the reference value stored.
摘要翻译： 一种用于内燃机的罐内压检测装置，具有蒸发排放控制系统，用于控制在其燃料箱中产生的蒸发燃料的清洗进入其进气系统。 发动机启动后，ECU将通过蒸发排放控制系统中断预定时间段内的蒸发燃料的清除。 ECU使蒸发排放控制系统的控制阀将燃料箱的内部打开到大气中，并且在吹扫中断期间将由罐内压力传感器检测到的燃料箱内的压力值存储为参考值 并且同时燃料箱的内部向大气敞开。 ECU根据存储的参考值校正油箱内部压力传感器的输出值。
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公开(公告)号：US5396873A
公开(公告)日：1995-03-14
申请号：US168383
申请日：1993-12-17
申请人： Masayoshi Yamanaka , Hiroshi Maruyama , Masataka Chikamatsu , Yasunari Seki , Kenichi Maeda , Kazutomo Sawamura
发明人： Masayoshi Yamanaka , Hiroshi Maruyama , Masataka Chikamatsu , Yasunari Seki , Kenichi Maeda , Kazutomo Sawamura
CPC分类号： F02M25/0809
摘要： An evaporative fuel-processing system includes a first control valve arranged in a charging passage connecting between a fuel tank and a canister for adsorbing evaporative fuel generated from the fuel tank, a second control valve arranged in a purging passage connecting between the canister and an intake passage of the engine, a third control valve arranged in an air inlet port of the canister, and a system internal pressure sensor for detecting pressure within the system. The system is checked for a leak by monitoring a value of the pressure detected by the sensor after the system is negatively pressurized by closing the third control valve and opening the second control valve. The sensor is provided at a location upstream of the first control valve, and the first control valve is closed to detect a value of the pressure or a change thereof. Abnormality determination is carried out based on the detected value of the pressure. Alternatively, all of the above valves are closed in the negatively-pressurized state of the system to detect a first amount of change in the pressure, and then the first control valve alone is opened to detect a second amount of change in the pressure. Abnormality determination can be carried out based on the first and second amounts of change in the pressure, or by comparing a value of the pressure detected when the first and second valves are closed after negative pressurization with a value of the pressure detected after the first control valve is opened.
摘要翻译： 蒸发燃料处理系统包括：第一控制阀，其布置在连接在燃料箱和用于吸附从燃料箱产生的蒸发燃料的罐之间的充电通道中的第二控制阀;布置在连接在罐和进气口之间的清洗通道中的第二控制阀 发动机通过，布置在罐的进气口中的第三控制阀，以及用于检测系统内的压力的系统内部压力传感器。 通过关闭第三控制阀并打开第二控制阀，通过监视系统负压后由传感器检测到的压力值，来检查系统的泄漏。 传感器设置在第一控制阀的上游位置，第一控制阀关闭以检测压力值或其变化。 基于检测到的压力值进行异常判定。 或者，所有上述阀在系统的负压状态下关闭，以检测第一压力变化量，然后单独打开第一控制阀以检测第二压力变化量。 可以基于第一和第二压力变化量进行异常判定，或者通过将在第一和第二控制之后检测到的压力值与负压之后的第一和第二阀关闭时的压力值进行比较 阀打开。
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公开(公告)号：US5299545A
公开(公告)日：1994-04-05
申请号：US942875
申请日：1992-09-10
申请人： Shigetaka Kuroda , Kazutomo Sawamura , Masayoshi Yamanaka , Hiroshi Maruyama , Masataka Chikamatsu , Shoichi Nemoto , Takeshi Suzuki
发明人： Shigetaka Kuroda , Kazutomo Sawamura , Masayoshi Yamanaka , Hiroshi Maruyama , Masataka Chikamatsu , Shoichi Nemoto , Takeshi Suzuki
CPC分类号： F02M25/0809 , F02D41/003 , F02D2041/225 , F02D2200/0406 , F02D2200/0414 , F02D2200/0606 , F02D2200/703 , F02D41/1454 , F02M2025/0845
摘要： An evaporative fuel processing system adapted to be capable of detecting abnormality of an evaporative emission control system for storing, in a canister, evaporative fuel generated from a fuel tank for holding fuel to be supplied to an internal combustion engine, and purging evaporative fuel into the intake system of the engine. A first control valve is arranged across a passage extending between the fuel tank and the canister. A second control valve is arranged across a passage extending between the canister and the intake system of the engine. A third control valve is provided for an air inlet port of the canister communicatable with the atmosphere. Through operating these control valves to open and close them, the evaporative emission control system is negatively pressurized, and abnormality of this system is detected based on the pressure detected in this negatively pressurized state thereof. Timing for carrying out abnormality determination is determined depending on conditions of the fuel tank. Before starting the whole process for abnormality diagnosis of the system, evaporative fuel stored in the canister is allowed to be purged for a predetermined time period. When the temperature of fuel in the fuel tank exceeds a predetermined value, the abnormality determination is inhibited.
摘要翻译： 一种蒸发燃料处理系统，其适于能够检测蒸发排放控制系统的异常，所述蒸发排放控制系统用于将从燃料箱产生的蒸发燃料储存在用于保持要供应到内燃机的燃料中，并将蒸发燃料吹入 发动机进气系统。 第一控制阀横跨在燃料箱和罐之间延伸的通道布置。 第二控制阀跨过在发动机的罐和进气系统之间延伸的通道布置。 第三控制阀设置为可与大气通信的罐的进气口。 通过操作这些控制阀来打开和关闭它们，蒸发排放控制系统被负压，并且基于在其负压状态下检测到的压力来检测该系统的异常。 用于进行异常判定的定时取决于燃料箱的状况。 在开始系统的异常诊断的整个过程之前，允许储存在罐中的蒸发燃料被清洗预定的时间段。 当燃料箱中的燃料的温度超过预定值时，禁止异常判定。
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公开(公告)号：USRE37895E1
公开(公告)日：2002-10-29
申请号：US08620299
申请日：1996-03-22
申请人： Shigetaka Kuroda , Kazutomo Sawamura , Masayoshi Yamanaka , Hiroshi Maruyama , Masataka Chikamatsu , Shoichi Nemoto , Takeshi Suzuki
发明人： Shigetaka Kuroda , Kazutomo Sawamura , Masayoshi Yamanaka , Hiroshi Maruyama , Masataka Chikamatsu , Shoichi Nemoto , Takeshi Suzuki
IPC分类号： F02M3302
CPC分类号： F02M25/0809 , F02D41/003 , F02D41/1454 , F02D2041/225 , F02D2200/0406 , F02D2200/0414 , F02D2200/0606 , F02D2200/703 , F02M2025/0845
摘要： An evaporative fuel processing system adapted to be capable of detecting abnormality of an evaporative emission control system for storing, in a canister, evaporative fuel from a fuel tank for holding fuel to be supplied to an internal combustion engine, and purging evaporative fuel into the intake system of the engine. A first control valve is arranged across a passage extending between the fuel tank and the canister. A second control valve is arranged across a passage extending between the canister and the intake system of the engine. A third control valve is provided for an air inlet part of the canister communicatable with the atmosphere. Through operating these control valves to open and close them, the evaporative emission control system is negatively pressurized, and abnormality of this system is detected based on the pressure detected in this negatively pressurized state thereof. Timing for carrying out abnormality determination is determined depending on conditions of the fuel tank. Before starting the whole process for abnormality diagnosis of the system evaporative fuel stored in the canister is allowed to be purged for a predetermined time period. When the temperature of fuel in the fuel tank exceeds a predetermined value, the abnormality determination is inhibited.
摘要翻译： 一种蒸发燃料处理系统，其适于能够检测蒸发排放控制系统的异常，所述蒸发排放控制系统用于将来自燃料箱的蒸发燃料储存在用于保持要供应到内燃机的燃料的蒸发排放控制系统中，并将蒸发燃料吹入进气口 发动机系统。 第一控制阀横跨在燃料箱和罐之间延伸的通道布置。 第二控制阀跨过在发动机的罐和进气系统之间延伸的通道布置。 第三控制阀设置用于可与大气通信的罐的空气入口部分。 通过操作这些控制阀来打开和关闭它们，蒸发排放控制系统被负压，并且基于在其负压状态下检测到的压力来检测该系统的异常。 用于进行异常判定的定时取决于燃料箱的状况。 在开始用于系统的异常诊断的整个过程之前，允许存储在罐中的蒸发燃料被清洗预定时间段。 当燃料箱中的燃料的温度超过预定值时，禁止异常判定。
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公开(公告)号：US5267547A
公开(公告)日：1993-12-07
申请号：US5993
申请日：1993-01-19
申请人： Masataka Chikamatsu , Masayoshi Yamanaka , Hiroshi Maruyama , Shigetaka Kuroda , Kazutomo Sawamura
发明人： Masataka Chikamatsu , Masayoshi Yamanaka , Hiroshi Maruyama , Shigetaka Kuroda , Kazutomo Sawamura
CPC分类号： F02M25/0809
摘要： A tank internal pressure-detecting device for an internal combustion engine having an evaporative emission control system for controlling purging of evaporative fuel generated in a fuel tank thereof into an intake system thereof. An ECU interrupts purging of evaporative fuel by the evaporative emission control system for a predetermined period of time after the engine is started. The ECU causes control valves of the evaporative emission control system to open the interior of the fuel tank to the atmosphere, and stores a value of pressure within the fuel tank detected by a tank internal pressure sensor as a reference value while the purging is being interrupted and at the same time the interior of the fuel tank is opened to the atmosphere. The ECU corrects an output value of the tank internal pressure sensor, based upon the reference value stored.
摘要翻译： 一种用于内燃机的罐内压检测装置，具有蒸发排放控制系统，用于控制在其燃料箱中产生的蒸发燃料的清洗进入其进气系统。 发动机启动后，ECU将通过蒸发排放控制系统中断预定时间段内的蒸发燃料的清除。 ECU使蒸发排放控制系统的控制阀将燃料箱的内部打开到大气中，并且在吹扫中断期间将由罐内压力传感器检测到的燃料箱内的压力值存储为参考值 并且同时燃料箱的内部向大气敞开。 ECU根据存储的参考值校正油箱内部压力传感器的输出值。
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8.发明授权
公开(公告)号：US5325664A
公开(公告)日：1994-07-05
申请号：US961794
申请日：1992-10-16
申请人： Yasunari Seki , Toshihiko Sato , Katuhiro Kumagai , Hiroshi Maruyama , Yoichi Iwata , Tsuyoshi Takizawa , Kenichi Maeda , Shigetaka Kuroda , Masataka Chikamatsu , Shukoh Terata , Kazutomo Sawamura , Hajime Uto , Takuya Aoki , Makoto Kobayashi
发明人： Yasunari Seki , Toshihiko Sato , Katuhiro Kumagai , Hiroshi Maruyama , Yoichi Iwata , Tsuyoshi Takizawa , Kenichi Maeda , Shigetaka Kuroda , Masataka Chikamatsu , Shukoh Terata , Kazutomo Sawamura , Hajime Uto , Takuya Aoki , Makoto Kobayashi
CPC分类号： F01N11/002 , F01N11/007 , F01N13/009 , F01N2550/02 , F01N2900/0422 , Y02T10/47
摘要： A catalyst deterioration-determining system determines deterioration of a catalyst arranged in the exhaust passage of an internal combustion engine. An ECU is responsive to an output from an O.sub.2 sensor arranged upstream of the catalyst or outputs from O.sub.2 sensors arranged upstream and downstream of the catalyst for controlling the air-fuel ratio of a mixture supplied to the engine by means of an air-fuel ratio correction value (first air-fuel ratio control). When the engine is in a predetermined operating condition, the system effects changeover from the first air-fuel ratio control to a second air-fuel ratio control which is responsive to the output from the downstream O.sub.2 sensor for controlling the air-fuel ratio of the mixture by means of the air-fuel ratio correction value. After the changeover has been effected, a time period is measured which elapses from the time the second air-fuel ratio control causes a change in the air-fuel ratio correction value from a richer side to a leaner side or vice versa with respect to a stoichiometric air-fuel ratio to the time the output from the downstream O.sub.2 sensor is inverted from the richer side to the leaner side or vice versa with respect to the stoichiometric air-fuel ratio. It is determined that the catalyst is deteriorated, when the measured time period is shorter than the predetermined time period.
摘要翻译： 催化剂劣化确定系统确定布置在内燃机的排气通道中的催化剂的劣化。 ECU响应于设置在催化剂上游的O 2传感器的输出或者从设置在催化剂上游和下游的O2传感器输出，用于通过空燃比控制供给发动机的混合物的空燃比 校正值（第一空燃比控制）。 当发动机处于预定的运行状态时，该系统实现从第一空燃比控制切换到第二空燃比控制，第二空燃比控制响应于来自下游O2传感器的输出，用于控制发动机的空燃比 通过空燃比校正值进行混合。 在切换已经实现之后，测量从第二空燃比控制引起空燃比校正值从更丰富侧到更瘦侧的变化时间经过的时间段，反之亦然 化学计量空燃比与下游O2传感器的输出相对于化学计量空燃比从更丰富的一侧反转到更稀的侧，反之亦然。 当测量的时间段短于预定时间段时，确定催化剂劣化。
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公开(公告)号：US5349299A
公开(公告)日：1994-09-20
申请号：US989438
申请日：1992-12-11
申请人： Masaki Kanehiro , Yuichi Shimasaki , Takuji Ishioka , Shigeki Baba , Takashi Hisaki , Shigeru Maruyama , Masataka Chikamatsu , Shukoh Terata , Kenichi Maeda , Kazuhito Kakimoto
发明人： Masaki Kanehiro , Yuichi Shimasaki , Takuji Ishioka , Shigeki Baba , Takashi Hisaki , Shigeru Maruyama , Masataka Chikamatsu , Shukoh Terata , Kenichi Maeda , Kazuhito Kakimoto
CPC分类号： F02P17/12 , F02P2017/125
摘要： A misfire-detecting system detects a misfire occurring in an internal combustion engine. A value of sparking voltage for discharging a spark plug of the engine is detected. A differentiating circuit differentiates the detected value of the sparking voltage. A misfire-determining circuit compares the differential value of the sparking voltage with a predetermined value, and determines, based upon a result of the comparison, whether a misfire has occurred in the engine.
摘要翻译： 失火检测系统检测内燃机中发生的失火。 检测用于排放发动机的火花塞的火花电压的值。 微分电路使检测到的火花电压值区分开来。 失火确定电路将火花电压的微分值与预定值进行比较，并且基于比较结果确定发动机中是否发生失火。
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公开(公告)号：US5226394A
公开(公告)日：1993-07-13
申请号：US967927
申请日：1992-10-28
申请人： Yuuichi Shimasaki , Masataka Chikamatsu , Takuji Ishioka , Shigetaka Kuroda , Hideaki Arai , Masaki Kanehiro , Takashi Hisaki , Shigeru Maruyama
发明人： Yuuichi Shimasaki , Masataka Chikamatsu , Takuji Ishioka , Shigetaka Kuroda , Hideaki Arai , Masaki Kanehiro , Takashi Hisaki , Shigeru Maruyama
IPC分类号： F02P17/12
CPC分类号： F02P17/12 , F02P2017/121 , F02P2017/125
摘要： A misfire-detecting system for an internal combustion engine detects a value of sparking voltage generated after generation of an ignition command signal, compares the detected value of sparking voltage with a predetermined voltage value, and determines whether or not a misfire has occurred in the engine, based upon results of the comparison. The determination as to occurrence of the misfire is effected, based upon results of the comparison between the detected value of the sparking voltage and the predetermined voltage value, obtained within a previously set limited comparison period.
摘要翻译： 用于内燃机的失火检测系统检测在产生点火指令信号之后产生的火花电压值，将检测到的火花电压值与预定电压值进行比较，并确定发动机是否发生失火 ，基于比较结果。 基于在先前设定的限制比较周期内获得的火花电压的检测值与预定电压值之间的比较结果，进行关于发生失火的确定。
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