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公开(公告)号：US20070062495A1
公开(公告)日：2007-03-22
申请号：US11522523
申请日：2006-09-18
IPC分类号： F02M25/08
CPC分类号： F02M25/0836 , F02D41/0045 , F02D2200/0406 , F02D2200/703 , F02D2250/41 , F02M25/089
摘要： An evaporative fuel treatment system is disclosed that includes a canister, a detection passage having a reduced area portion, and switching device that switches fluid communication. Also included is a depressurizing device for depressurizing the detection passage coupled to the detection passage on a side of the reduced area portion opposite to the switching device, and a pressure detecting device. Moreover, the system includes an evaporative fuel state calculating device for calculating an evaporative fuel state in the mixture based on a cutoff pressure, an air pressure, and a mixture pressure of a mixture of air and the evaporative fuel. In one embodiment, the cutoff pressure, the air pressure, and the mixture pressure are detected independently and discontinuously. In another embodiment, the cutoff pressure and the air pressure are detected on a continual basis during purge of the evaporative fuel.
摘要翻译： 公开了一种蒸发燃料处理系统，其包括罐，具有减小的面积部分的检测通道和切换流体连通的开关装置。 还包括减压装置，用于对与开关装置相对的减小区域部分的一侧耦合到检测通道的检测通道进行减压，以及压力检测装置。 此外，该系统包括蒸发燃料状态计算装置，用于基于空气和蒸发燃料的混合物的截止压力，空气压力和混合压力来计算混合物中的蒸发燃料状态。 在一个实施例中，独立且不连续地检测截止压力，空气压力和混合压力。 在另一个实施例中，在净化蒸发燃料期间，连续地检测截止压力和空气压力。
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公开(公告)号：US07418952B2
公开(公告)日：2008-09-02
申请号：US11522523
申请日：2006-09-18
CPC分类号： F02M25/0836 , F02D41/0045 , F02D2200/0406 , F02D2200/703 , F02D2250/41 , F02M25/089
摘要： An evaporative fuel treatment system is disclosed that includes a canister, a detection passage having a reduced area portion, and switching device that switches fluid communication. Also included is a depressurizing device for depressurizing the detection passage coupled to the detection passage on a side of the reduced area portion opposite to the switching device, and a pressure detecting device. Moreover, the system includes an evaporative fuel state calculating device for calculating an evaporative fuel state in the mixture based on a cutoff pressure, an air pressure, and a mixture pressure of a mixture of air and the evaporative fuel. In one embodiment, the cutoff pressure, the air pressure, and the mixture pressure are detected independently and discontinuously. In another embodiment, the cutoff pressure and the air pressure are detected on a continual basis during purge of the evaporative fuel.
摘要翻译： 公开了一种蒸发燃料处理系统，其包括罐，具有减小的面积部分的检测通道和切换流体连通的开关装置。 还包括减压装置，用于对与开关装置相对的减小区域部分的一侧耦合到检测通道的检测通道进行减压，以及压力检测装置。 此外，该系统包括蒸发燃料状态计算装置，用于基于空气和蒸发燃料的混合物的截止压力，空气压力和混合压力来计算混合物中的蒸发燃料状态。 在一个实施例中，独立且不连续地检测截止压力，空气压力和混合压力。 在另一个实施例中，在净化蒸发燃料期间，连续地检测截止压力和空气压力。
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公开(公告)号：US07318425B2
公开(公告)日：2008-01-15
申请号：US11398755
申请日：2006-04-06
申请人： Masao Kano , Shinsuke Takakura , Tomoaki Nakano , Noriyasu Amano , Shinsuke Kiyomiya , Yuusaku Nishimura
发明人： Masao Kano , Shinsuke Takakura , Tomoaki Nakano , Noriyasu Amano , Shinsuke Kiyomiya , Yuusaku Nishimura
IPC分类号： F02M33/04
CPC分类号： F02M25/089 , F02D41/0032 , F02D41/0045
摘要： A fuel vapor treatment apparatus includes a first canister, a purge passage, an atmosphere passage, a first detection passage provided with a restrictor, and a passage-changing valve for changing the connection passage of the first detection passage between the purge passage and the atmosphere passage. The apparatus further includes a second canister connecting with the first detection passage on the opposite side of the passage-changing valve across the restrictor. A differential pressure sensor detects a pressure difference between both ends of the restrictor. An ECU computes the concentration of fuel vapor on the basis of the detection result of the differential pressure sensor.
摘要翻译： 燃料蒸气处理装置包括第一罐，净化通道，大气通道，设有限流器的第一检测通道和用于改变净化通道和大气之间的第一检测通道的连接通道的通道切换阀 通道。 该装置还包括在通过限制器的通道切换阀的相反侧与第一检测通道连接的第二罐。 差压传感器检测节流器两端之间的压力差。 ECU根据差压传感器的检测结果计算燃料蒸气的浓度。
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公开(公告)号：US20060225713A1
公开(公告)日：2006-10-12
申请号：US11398755
申请日：2006-04-06
申请人： Masao Kano , Shinsuke Takakura , Tomoaki Nakano , Noriyasu Amano , Shinsuke Kiyomiya , Yuusaku Nishimura
发明人： Masao Kano , Shinsuke Takakura , Tomoaki Nakano , Noriyasu Amano , Shinsuke Kiyomiya , Yuusaku Nishimura
IPC分类号： F02M33/04
CPC分类号： F02M25/089 , F02D41/0032 , F02D41/0045
摘要： A fuel vapor treatment apparatus includes a first canister, a purge passage, an atmosphere passage, a first detection passage provided with a restrictor, and a passage-changing valve for changing the connection passage of the first detection passage between the purge passage and the atmosphere passage. The apparatus further includes a second canister connecting with the first detection passage on the opposite side of the passage-changing valve across the restrictor. A differential pressure sensor detects a pressure difference between both ends of the restrictor. An ECU computes the concentration of fuel vapor on the basis of the detection result of the differential pressure sensor.
摘要翻译： 燃料蒸气处理装置包括第一罐，净化通道，大气通道，设有限流器的第一检测通道和用于改变净化通道和大气之间的第一检测通道的连接通道的通道切换阀 通道。 该装置还包括在通过限制器的通道切换阀的相反侧与第一检测通道连接的第二罐。 差压传感器检测节流器两端之间的压力差。 ECU根据差压传感器的检测结果计算燃料蒸气的浓度。
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5.发明申请GAS DENSITY RATIO DETECTOR, GAS CONCENTRATION DETECTOR, AND FUEL VAPOR TREATMENT APPARATUS 有权气体密度比例检测器，气体浓度检测器和燃油蒸汽处理装置公开(公告)号：US20070157907A1
公开(公告)日：2007-07-12
申请号：US11397891
申请日：2006-04-05
CPC分类号： F02D41/0045 , F01N11/007 , F02D41/0032 , F02M25/089
摘要： When a gas flow producer is driven, plural kinds of gases flow into a measure-passage at respective timing. An orifice is provided in the measure-passage. The orifice has a diameter-changing portion which restricts a separation of gases from an inner surface of the measure-passage. A pressure sensor is provided in the measure-passage to detect a pressure determined by the orifice and the gas flow producer. A microcomputer calculates a density ratio between the gases based on the detected differential pressure.
摘要翻译： 当气流生成器被驱动时，多种气体在各自的时刻流入测量通道。 在测量通道中设有孔口。 孔具有直径变化部分，其限制气体与测量通道的内表面的分离。 在测量通道中设置压力传感器以检测由孔口和气体流量产生器确定的压力。 微型计算机基于检测到的压差来计算气体之间的密度比。
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6.发明授权Gas density ratio detector, gas concentration detector, and fuel vapor treatment apparatus 有权气体密度比检测器，气体浓度检测器和燃料蒸气处理装置公开(公告)号：US07234450B1
公开(公告)日：2007-06-26
申请号：US11397891
申请日：2006-04-05
IPC分类号： F02M51/00
CPC分类号： F02D41/0045 , F01N11/007 , F02D41/0032 , F02M25/089
摘要： When a gas flow producer is driven, plural kinds of gases flow into a measure-passage at respective timing. An orifice is provided in the measure-passage. The orifice has a diameter-changing portion which restricts a separation of gases from an inner surface of the measure-passage. A pressure sensor is provided in the measure-passage to detect a pressure determined by the orifice and the gas flow producer. A microcomputer calculates a density ratio between the gases based on the detected differential pressure.
摘要翻译： 当气流生成器被驱动时，多种气体在各自的时刻流入测量通道。 在测量通道中设有孔口。 孔具有直径变化部分，其限制气体与测量通道的内表面的分离。 在测量通道中设置压力传感器以检测由孔口和气体流量产生器确定的压力。 微型计算机基于检测到的压差来计算气体之间的密度比。
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公开(公告)号：US07246608B2
公开(公告)日：2007-07-24
申请号：US11295729
申请日：2005-12-07
IPC分类号： F02M33/02
CPC分类号： F02D41/0045 , F02D41/004 , F02D2200/703 , F02M25/089
摘要： A fuel vapor processing apparatus includes a canister, a purge passage, a detection passage including an atmosphere passage and a restrictor, a passage changing valve for changing the connection passage of the detection passage between the purge passage and the atmosphere passage, a pump connecting with the detection passage on the opposite side of the passage changing valve across the restrictor, a pressure sensor for detecting a pressure between the restrictor and the pump, and an ECU for computing the concentration of fuel vapor. When the passage changing valve causes the purge passage to connect with the detection passage and the pump reduces pressure in the detection passage to pass the air-fuel mixture through the restrictor, the pressure sensor detects the pressure during a detection period of time that elapses after the air-fuel mixture passes through the restrictor until the air-fuel mixture reaches the pump.
摘要翻译： 一种燃料蒸汽处理装置，包括罐，净化通道，包括大气通道和限流器的检测通道，用于改变在净化通道和大气通道之间的检测通道的连接通道的通道改变阀， 在通过限制器的通道改变阀的相对侧的检测通道，用于检测限制器和泵之间的压力的压力传感器和用于计算燃料蒸气浓度的ECU。 当通道切换阀使清扫通道与检测通道连接时，泵减小检测通道中的压力以使空气 - 燃料混合物通过限流器，压力传感器在经过的检测时段之后检测压力 空气 - 燃料混合物通过限流器直到空气 - 燃料混合物到达泵。
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公开(公告)号：US20060144373A1
公开(公告)日：2006-07-06
申请号：US11295729
申请日：2005-12-07
IPC分类号： F02M33/04
CPC分类号： F02D41/0045 , F02D41/004 , F02D2200/703 , F02M25/089
摘要： A fuel vapor processing apparatus includes a canister, a purge passage, a detection passage including an atmosphere passage and a restrictor, a passage changing valve for changing the connection passage of the detection passage between the purge passage and the atmosphere passage, a pump connecting with the detection passage on the opposite side of the passage changing valve across the restrictor, a pressure sensor for detecting a pressure between the restrictor and the pump, and an ECU for computing the concentration of fuel vapor. When the passage changing valve causes the purge passage to connect with the detection passage and the pump reduces pressure in the detection passage to pass the air-fuel mixture through the restrictor, the pressure sensor detects the pressure during a detection period of time that elapses after the air-fuel mixture passes through the restrictor until the air-fuel mixture reaches the pump.
摘要翻译： 一种燃料蒸汽处理装置，包括罐，净化通道，包括大气通道和限流器的检测通道，用于改变在净化通道和大气通道之间的检测通道的连接通道的通道改变阀， 在通过限制器的通道改变阀的相对侧的检测通道，用于检测限制器和泵之间的压力的压力传感器和用于计算燃料蒸气浓度的ECU。 当通道切换阀使清扫通道与检测通道连接时，泵减小检测通道中的压力以使空气 - 燃料混合物通过限流器，压力传感器在经过的检测时段之后检测压力 空气 - 燃料混合物通过限流器直到空气 - 燃料混合物到达泵。
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公开(公告)号：US07603990B2
公开(公告)日：2009-10-20
申请号：US12135303
申请日：2008-06-09
申请人： Shinsuke Takakura , Masao Kano , Noriyasu Amano
发明人： Shinsuke Takakura , Masao Kano , Noriyasu Amano
IPC分类号： F02M33/02
CPC分类号： F02M25/089 , F02D41/0042 , F02D41/0045
摘要： An ECU computes a transit time from a time when the fuel vapor passes the purge valve right after the purge valve is opened until a time when the fuel vapor reaches a vicinity of the fuel injector. Further more, the ECU computes a fuel vapor concentration at the vicinity of the fuel injector after the transit time has elapsed based on a first-order lag curve which is defined by a maximum variation of the fuel vapor concentration and a time constant. Correcting the fuel injection quantity according to the fuel vapor concentration at the vicinity of the injector restricts a disturbance of air-fuel ratio at a time of starting purge process.
摘要翻译： ECU在从清洗阀打开直到燃料蒸气到达燃料喷射器附近的时刻之前计算燃料蒸气经过净化阀时的通行时间。 此外，ECU基于由燃料蒸气浓度的最大变化和时间常数确定的一阶滞后曲线，在经过了通过时间之后，计算燃料喷射器附近的燃料蒸气浓度。 根据喷射器附近的燃料蒸气浓度校正燃料喷射量，限制了在开始吹扫过程时的空燃比干扰。
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公开(公告)号：US07500474B2
公开(公告)日：2009-03-10
申请号：US11878314
申请日：2007-07-23
申请人： Masao Kano , Shinsuke Takakura , Noriyasu Amano
发明人： Masao Kano , Shinsuke Takakura , Noriyasu Amano
CPC分类号： F02M25/0809 , F02M25/0827
摘要： A leak detecting apparatus includes a canister adsorbing a fuel vapor evaporated in a fuel tank, a measure passage, a pump connected with the canister through the measure passage, and a pressure senor detecting a pressure in the measure passage. The pump depressurizes the measure passage, the canister, and the fuel tank so that a leakage of the fuel vapor is detected. When a blow-by of the fuel vapor is arisen, the pump is stopped to forcibly terminate a depressurization.
摘要翻译： 泄漏检测装置包括吸附在燃料箱中蒸发的燃料蒸气的罐，测量通道，通过测量通道与罐连接的泵以及检测测量通道中的压力的压力传感器。 泵对测量通道，罐和燃料箱进行减压，从而检测到燃料蒸气的泄漏。 当出现燃料蒸汽的窜动时，停止泵以强制终止减压。
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