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公开(公告)号：US07040302B2
公开(公告)日：2006-05-09
申请号：US10845405
申请日：2004-05-14
申请人： Takashi Yamaguchi , Hideyuki Oki , Satoru Kubo , Mahito Shikama , Tomohiro Yamagami , Koichi Yoshiki
发明人： Takashi Yamaguchi , Hideyuki Oki , Satoru Kubo , Mahito Shikama , Tomohiro Yamagami , Koichi Yoshiki
IPC分类号： F02M37/04
CPC分类号： F02M25/0809 , F02M25/0827
摘要： A failure diagnosis apparatus for diagnosing a failure of an evaporative fuel processing system. A pressure in the evaporative fuel processing system is detected, and a purge control valve and a vent shut valve are closed when stoppage of the engine is detected. A determination is made as to whether there is a leak in the evaporative fuel processing system based on the detected pressure during a predetermined determination period after closing of the purge control and vent shut valves.
摘要翻译： 一种故障诊断装置，用于诊断蒸发燃料处理系统的故障。 检测到蒸发燃料处理系统中的压力，并且在检测到发动机的停止时，关闭净化控制阀和排气关闭阀。 根据在关闭清洗控制和排气关闭阀之后的预定确定时段期间基于检测到的压力确定蒸发燃料处理系统中是否存在泄漏。
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公开(公告)号：US20060179928A1
公开(公告)日：2006-08-17
申请号：US11346367
申请日：2006-02-03
IPC分类号： G01M19/00
CPC分类号： F02M25/0809
摘要： A failure diagnosis apparatus for diagnosing a failure of an evaporative fuel processing system. The system includes a fuel tank, a canister having adsorbent for adsorbing evaporative fuel generated in the fuel tank, an air passage connected to the canister for communicating the canister with the atmosphere, a first passage for connecting the canister and the fuel tank, a second passage for connecting the canister and an intake system of an internal combustion engine, and a purge control valve provided in the second passage. A pressure in the evaporative fuel processing system is detected. An opening of the purge control valve is controlled by changing a duty ratio of a drive signal which drives the purge control valve. First and second filterings of the detected pressure are performed. A second passing frequency band of the second filtering is narrower than a first passing frequency band of the first filtering. A flow rate abnormality of a purge gas flowing in the second passage is determined based on the filtered pressures.
摘要翻译： 一种故障诊断装置，用于诊断蒸发燃料处理系统的故障。 该系统包括燃料箱，具有用于吸附在燃料箱中产生的蒸发燃料的吸附剂的罐，连接到罐的空气通道，用于将罐与大气连通，用于连接罐和燃料箱的第一通道，第二 用于连接罐和内燃机的进气系统的通道以及设置在第二通道中的净化控制阀。 检测蒸发燃料处理系统中的压力。 通过改变驱动清洗控制阀的驱动信号的占空比来控制清洗控制阀的打开。 执行检测到的压力的第一和第二过滤。 第二滤波的第二通过频带比第一滤波的第一通过频带窄。 基于过滤的压力确定在第二通道中流动的吹扫气体的流量异常。
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公开(公告)号：US07367326B2
公开(公告)日：2008-05-06
申请号：US11346367
申请日：2006-02-03
CPC分类号： F02M25/0809
摘要： A failure diagnosis apparatus for diagnosing a failure of an evaporative fuel processing system. The system includes a fuel tank, a canister having adsorbent for adsorbing evaporative fuel generated in the fuel tank, an air passage connected to the canister for communicating the canister with the atmosphere, a first passage for connecting the canister and the fuel tank, a second passage for connecting the canister and an intake system of an internal combustion engine, and a purge control valve provided in the second passage. A pressure in the evaporative fuel processing system is detected. An opening of the purge control valve is controlled by changing a duty ratio of a drive signal which drives the purge control valve. First and second filterings of the detected pressure are performed. A second passing frequency band of the second filtering is narrower than a first passing frequency band of the first filtering. A flow rate abnormality of a purge gas flowing in the second passage is determined based on the filtered pressures.
摘要翻译： 一种故障诊断装置，用于诊断蒸发燃料处理系统的故障。 该系统包括燃料箱，具有用于吸附在燃料箱中产生的蒸发燃料的吸附剂的罐，连接到罐的空气通道，用于将罐与大气连通，用于连接罐和燃料箱的第一通道，第二 用于连接罐和内燃机的进气系统的通道以及设置在第二通道中的净化控制阀。 检测蒸发燃料处理系统中的压力。 通过改变驱动清洗控制阀的驱动信号的占空比来控制清洗控制阀的打开。 执行检测到的压力的第一和第二过滤。 第二滤波的第二通过频带比第一滤波的第一通过频带窄。 基于过滤的压力确定在第二通道中流动的吹扫气体的流量异常。
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公开(公告)号：US07159580B2
公开(公告)日：2007-01-09
申请号：US11204970
申请日：2005-08-17
CPC分类号： F02M25/0827 , F02M25/0809
摘要： A failure diagnosis apparatus for diagnosing a failure of an evaporative fuel processing system wherein a pressure in the evaporative fuel processing system is detected, and a purge control valve and a vent shut valve are closed when stoppage of the engine is detected. A determination is made as to whether there is a leak in the evaporative fuel processing system based on the detected pressure during a predetermined determination period after closing of the purge control and vent shut valves. The determination result is decided according to a parameter indicative of an amount of evaporative fuel generated in the fuel tank after stoppage of the engine.
摘要翻译： 一种用于诊断蒸发燃料处理系统的故障的故障诊断装置，其中检测到所述蒸发燃料处理系统中的压力，并且在检测到所述发动机停机时，清除控制阀和排气关闭阀关闭。 根据在关闭清洗控制和排气关闭阀之后的预定确定时段期间基于检测到的压力确定蒸发燃料处理系统中是否存在泄漏。 决定结果根据指示在发动机停止后在燃料箱中产生的蒸发燃料量的参数来决定。
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公开(公告)号：US20060052931A1
公开(公告)日：2006-03-09
申请号：US11204970
申请日：2005-08-17
IPC分类号： G01M15/09
CPC分类号： F02M25/0827 , F02M25/0809
摘要： A failure diagnosis apparatus for diagnosing a failure of an evaporative fuel processing system wherein a pressure in the evaporative fuel processing system is detected, and a purge control valve and a vent shut valve are closed when stoppage of the engine is detected. A determination is made as to whether there is a leak in the evaporative fuel processing system based on the detected pressure during a predetermined determination period after closing of the purge control and vent shut valves. The determination result is decided according to a parameter indicative of an amount of evaporative fuel generated in the fuel tank after stoppage of the engine.
摘要翻译： 一种用于诊断蒸发燃料处理系统的故障的故障诊断装置，其中检测到所述蒸发燃料处理系统中的压力，并且在检测到所述发动机停机时，清除控制阀和排气关闭阀关闭。 根据在关闭清洗控制和排气关闭阀之后的预定确定时段期间基于检测到的压力确定蒸发燃料处理系统中是否存在泄漏。 决定结果根据指示在发动机停止后在燃料箱中产生的蒸发燃料量的参数来决定。
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公开(公告)号：US06880534B2
公开(公告)日：2005-04-19
申请号：US10870937
申请日：2004-06-21
申请人： Koichi Yoshiki , Kazuhiko Imamura , Ryuji Kohno , Mahito Shikama , Toshiichi Terakado , Kenichi Maeda , Masayuki Wakui
发明人： Koichi Yoshiki , Kazuhiko Imamura , Ryuji Kohno , Mahito Shikama , Toshiichi Terakado , Kenichi Maeda , Masayuki Wakui
CPC分类号： F02D41/0045 , F02D41/0032 , F02D41/187 , F02M25/08
摘要： An evaporative fuel processing system for processing evaporative fuel generated a fuel tank. A canister temporarily stores evaporative fuel generated in the fuel tank. A charge passage connects the fuel tank and the canister. A first purge passage connects the canister and an intake pipe of an internal combustion engine having a turbocharger. A purge control valve is provided in the first purge passage for adjusting a flow rate of gases flowing through the first purge passage. A second purge passage connects a downstream side of the purge control valve of the first purge passage and an upstream side of the turbocharger of the intake pipe. A jet pump is mounted on the second purge passage. A pressurized air supply passage supplies air pressurized by the turbocharger to the jet pump. The jet pump includes a nozzle for discharging the pressurized air supplied through the pressurized air supply passage.
摘要翻译： 用于处理蒸发燃料的蒸发燃料处理系统产生燃料箱。 罐临时存储在燃料箱中产生的蒸发燃料。 充电通道连接燃料箱和罐。 第一吹扫通道连接罐和具有涡轮增压器的内燃机的进气管。 净化控制阀设置在第一吹扫通道中，用于调节流过第一吹扫通道的气体的流量。 第二吹扫通道连接第一吹扫通道的净化控制阀的下游侧和进气管的涡轮增压器的上游侧。 喷射泵安装在第二吹扫通道上。 加压空气供应通道将由涡轮增压器加压的空气供应到喷射泵。 喷射泵包括用于排出通过加压空气供应通道供应的加压空气的喷嘴。
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公开(公告)号：US20050011498A1
公开(公告)日：2005-01-20
申请号：US10870937
申请日：2004-06-21
申请人： Koichi Yoshiki , Kazuhiko Imamura , Ryuji Kohno , Mahito Shikama , Toshiichi Terakado , Kenichi Maeda , Masayuki Wakui
发明人： Koichi Yoshiki , Kazuhiko Imamura , Ryuji Kohno , Mahito Shikama , Toshiichi Terakado , Kenichi Maeda , Masayuki Wakui
CPC分类号： F02D41/0045 , F02D41/0032 , F02D41/187 , F02M25/08
摘要： An evaporative fuel processing system for processing evaporative fuel generated a fuel tank. A canister temporarily stores evaporative fuel generated in the fuel tank. A charge passage connects the fuel tank and the canister. A first purge passage connects the canister and an intake pipe of an internal combustion engine having a turbocharger. A purge control valve is provided in the first purge passage for adjusting a flow rate of gases flowing through the first purge passage. A second purge passage connects a downstream side of the purge control valve of the first purge passage and an upstream side of the turbocharger of the intake pipe. A jet pump is mounted on the second purge passage. A pressurized air supply passage supplies air pressurized by the turbocharger to the jet pump. The jet pump includes a nozzle for discharging the pressurized air supplied through the pressurized air supply passage.
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8.发明授权Fault determining apparatus, fault determining method and engine control unit for variable valve timing mechanism 失效故障判定装置，故障判定方法和可变气门正时机构的发动机控制单元公开(公告)号：US06885976B2
公开(公告)日：2005-04-26
申请号：US10173592
申请日：2002-06-19
申请人： Koichi Yoshiki , Yukio Miyashita , Hideyuki Oki , Takashi Isobe , Tetsuya Ohno , Kojiro Tsutsumi
发明人： Koichi Yoshiki , Yukio Miyashita , Hideyuki Oki , Takashi Isobe , Tetsuya Ohno , Kojiro Tsutsumi
CPC分类号： F02D13/0219 , F01L1/34 , F01L2001/3443 , F01L2800/00 , F01L2800/11 , F02D41/221 , F02D2041/001 , Y02T10/18 , Y02T10/40
摘要： A fault determining apparatus for a variable valve timing mechanism is provided for shortly and accurately determining a fault even at low oil temperatures. The mechanism is driven by an oil pressure to change a cam phase of an intake cam and/or an exhaust cam with respect to a crank shaft of an internal combustion engine, thereby controlling the actual cam phase to reach a target cam phase. The apparatus has a fault determining routine executed by an ECU (electric control unit) for determining that the mechanism is faulty when a cam phase difference between the target cam phase and the actual cam phase is not within a predetermined range, an oil temperature sensor for detecting the temperature of the working oil, and a correcting routine executed by the ECU for correcting the predetermined range in an increasing direction when the detected oil temperature is low.
摘要翻译： 提供了一种用于可变气门正时机构的故障确定装置，用于即使在低油温下即时且精确地确定故障。 该机构由油压驱动，以相对于内燃机的曲轴改变进气凸轮和/或排气凸轮的凸轮相位，从而控制实际凸轮相位达到目标凸轮相位。 该装置具有当目标凸轮相位和实际凸轮相位之间的凸轮相位差不在预定范围内时由ECU（电气控制单元）执行的用于确定机构故障的故障确定程序，用于 检测工作油的温度，以及由ECU执行的校正程序，用于当检测到的油温低时，在增加的方向上校正预定范围。
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9.发明授权Failure determination apparatus and method and engine control unit for determining a failure of a temperature sensor 有权用于确定温度传感器故障的故障确定装置和方法以及发动机控制单元公开(公告)号：US06684154B2
公开(公告)日：2004-01-27
申请号：US10188040
申请日：2002-07-03
申请人： Takashi Isobe , Kojiro Tsutsumi , Hideyuki Oki , Yukio Miyashita , Koichi Yoshiki , Tetsuya Ohno
发明人： Takashi Isobe , Kojiro Tsutsumi , Hideyuki Oki , Yukio Miyashita , Koichi Yoshiki , Tetsuya Ohno
IPC分类号： G06F1900
CPC分类号： F02D41/222 , F01P11/16 , F02D35/025 , F02D41/042 , F02D2041/1433 , Y02T10/40
摘要： There is provided a failure determination apparatus which is capable of determining the failure of a temperature sensor promptly and correctly regardless of environmental conditions at the start of an internal combustion engine. An ECU calculates an operation progress parameter indicative of a degree of progress of operation of the internal combustion engine from the start thereof. A RAM of the ECU stores a value of the temperature detected by the temperature sensor at a stoppage of the engine. Further, the ECU measures a stop time period from the stoppage to a start of the engine, and determines that the temperature sensor is faulty, when the difference between a value of the temperature detected by the temperature sensor at the start of the present operation of the engine and the value of the temperature stored in the RAM is equal to or smaller than a predetermined reference value on condition that the operation progress parameter calculated during the immediately preceding operation of the engine is larger than a predetermined value, and that the stop time period before the present operation of the engine is longer than a predetermined time period.
摘要翻译： 提供了一种故障确定装置，其能够在内燃机的启动时立即确定温度传感器的故障，而不管环境条件如何。 ECU从其开始计算表示内燃机的运转进度的运转进行参数。 ECU的RAM存储由发动机停止时温度传感器检测到的温度的值。 此外，ECU在当前运行开始时由温度传感器检测到的温度值之间的差异，判定从停止到发动机起动的停止时间段，并且判定为温度传感器故障， 在发动机的前一操作中计算出的操作进度参数大于预定值的情况下，存储在RAM中的发动机和温度值等于或小于预定参考值，并且停止时间 在发动机的当前操作之前的时间段比预定时间段长。
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公开(公告)号：US20050011499A1
公开(公告)日：2005-01-20
申请号：US10892114
申请日：2004-07-16
申请人： Takeshi Hara , Masakazu Kitamoto , Hiroaki Mihara , Koichi Yoshiki , Satoru Kubo
发明人： Takeshi Hara , Masakazu Kitamoto , Hiroaki Mihara , Koichi Yoshiki , Satoru Kubo
CPC分类号： F02D41/0032 , F02M25/089
摘要： An atmosphere-vented valve (a pressure relief section) is opened in a predetermined amount so as to reduce an inside pressure of a canister to a predetermined negative pressure (S14) while preventing an inside pressure in a fuel tank from becoming an excessively negative pressure by closing a charge passageway opening and closing valve (S18), and purging is controlled while the canister inside pressure is being reduced, whereby from a similar principle to that of vacuum distillation, the release of vaporized fuel from an absorbent is promoted so as not only to increase the purge efficiency but also to prevent the application of an unnecessary stress to the fuel tank.
摘要翻译： 排气阀（减压部）以预定量打开，以便将罐的内部压力降低到预定的负压（S14），同时防止燃料箱中的内部压力变得过大的负压 通过关闭充电通道开闭阀（S18），并且在内部压力降低的同时控制清洗，由此，与类似于真空蒸馏的原理相同，促进从吸收剂中释放蒸发的燃料，从而不会 只是为了提高吹扫效率，同时也是为了防止对燃料箱施加不必要的压力。
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