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1.发明授权Device for measuring concentration/flow rate of a mixture drawn into an internal combustion engine and air-fuel ratio control system of the engine incorporating the device 失效用于测量吸入内燃机的混合物的浓度/流量的测量装置以及装有该装置的发动机的空燃比控制系统
公开(公告)号：US5188085A
公开(公告)日：1993-02-23
申请号：US853289
申请日：1992-03-18
申请人： Masayuki Habaguchi , Toyohei Nakajima , Fumio Hosoda , Sachito Fujimoto , Masakazu Kitamoto , Hideo Moriwaki , Takefumi Nakamura
发明人： Masayuki Habaguchi , Toyohei Nakajima , Fumio Hosoda , Sachito Fujimoto , Masakazu Kitamoto , Hideo Moriwaki , Takefumi Nakamura
CPC分类号： F02D41/0045 , F02M25/08 , F02D41/0042
摘要： A device for measuring a flow rate of a mixture of evaporative fuel and air supplied to an internal combustion engine comprises a plurality of flowmeters arranged in a purging passage connecting between a canister and an intake passage of the engine for purging the mixture of evaporative fuel and air therethrough into the intake passage. The flowmeters have different output characteristics relative to concentration of the evaporative fuel in the mixture. At least one of the concentration of the evaporative fuel in the mixture and the volumetric flow rate of the mixture are detected based on outputs from the flowmeters. In an air-fuel ratio control system incorporating the above device, the weight per unit time of evaporative fuel supplied to the intake system is calculated from the detected concentration of the evaporative fuel and the detected volumetric flow rate of the mixture. The air-fuel ratio of a total air-fuel mixture supplied to the engine is corrected by the use of the ratio of the calculated weight per unit time of evaporative fuel supplied by purging to the intake system to weight per unit time of fuel supplied by injection to the engine.
摘要翻译： 用于测量供应到内燃机的蒸发燃料和空气的混合物的流量的装置包括多个流量计，其布置在连接在发动机的罐和进气通道之间的清洗通道中，用于清除蒸发燃料和 空气通过其进入进气通道。 流量计相对于混合物中蒸发燃料的浓度具有不同的输出特性。 基于来自流量计的输出来检测混合物中蒸发燃料的浓度和混合物的体积流量中的至少一种。 在包含上述装置的空燃比控制系统中，从检测到的蒸发燃料的浓度和检测到的混合物的体积流量计算供给到进气系统的蒸发燃料的每单位时间的重量。 提供给发动机的总空气燃料混合物的空燃比通过使用通过净化供给的蒸发燃料的每单位时间计算的重量与进气系统的重量的比率来校正， 注射到发动机。
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公开(公告)号：US5176123A
公开(公告)日：1993-01-05
申请号：US876997
申请日：1992-05-01
申请人： Fumio Hosoda , Sachito Fujimoto , Masakazu Kitamoto , Hideo Moriwaki , Takashi Kiyomiya , Koichi Hidano
发明人： Fumio Hosoda , Sachito Fujimoto , Masakazu Kitamoto , Hideo Moriwaki , Takashi Kiyomiya , Koichi Hidano
IPC分类号： F02M25/08
CPC分类号： F02M25/08
摘要： An evaporative fuel-purging control system for an internal combustion engine, which controls purging of a mixture of evaporative fuel from a fuel tank and air comprises a purge control valve arranged across a purging passage for controlling the flow rate of evaporative fuel from the fuel tank to an intake passage. The flow rate of evaporative fuel is detected and compared with a desired flow rate commensurate with an operating condition of the engine. The valve opening of the purge control valve is controlled in response to results of the comparison. The change rate of the valve opening is varied according to the concentration of evaporative fuel in the mixture. Specifically, the change rate is decreased as the evaporative fuel concentration is higher.
摘要翻译： 一种用于控制从燃料箱和空气中抽取蒸发燃料的混合物的内燃机的蒸发式燃料清除控制系统包括一个排放在净化通道上的净化控制阀，用于控制来自燃料箱的蒸发燃料的流量 进入通道。 检测蒸发燃料的流量并将其与与发动机的运行状态相称的期望流量进行比较。 根据比较结果控制清洗控制阀的开阀。 阀门开度的变化率根据混合物中蒸发燃料的浓度而变化。 具体地说，随着蒸发燃料浓度的升高，变化率降低。
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公开(公告)号：US5052357A
公开(公告)日：1991-10-01
申请号：US578582
申请日：1990-09-06
CPC分类号： F02D31/005 , F02D41/2448 , F02D2011/102 , F02D41/2464
摘要： An intake air amount control system for an internal combustion engine includes a control valve for regulating the amount of intake air supplied through the intake pipe to the engine. An ECU determines the difference between a desired idling rotational speed of the engine and an actual rotational speed of same and feedback-controls the control valve by means of a control amount responsive to the determined difference such that the actual rotational speed becomes equal to the desired idling rotational speed. The ECU learns a reference value of the control amount by calculating an average value of values of the control amount applied during the feedback control. The ECU inhibits the learning of the reference value of the control amount when the difference between atmospheric pressure and absolute pressure within the intake pipe is smaller than a predetermined value.
摘要翻译： 用于内燃机的进气量控制系统包括用于调节通过进气管供给到发动机的进气量的控制阀。 ECU确定发动机的期望怠速转速与其实际转速之间的差异，并且通过响应于所确定的差的控制量反馈控制控制阀，使得实际转速等于期望的 空转转速。 ECU通过计算在反馈控制期间施加的控制量的值的平均值来学习控制量的参考值。 当进气管内的大气压与绝对压力的差小于预定值时，ECU禁止对控制量的参考值的学习。
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公开(公告)号：US5263461A
公开(公告)日：1993-11-23
申请号：US922422
申请日：1992-07-31
CPC分类号： F02M25/0809
摘要： An evaporative fuel-purging control system for an internal combustion engine incorporates a flowmeter arranged across a purging passage for outputting an output value indicative of the flow rate of a mixture of evaporative fuel and air being purged through the purging passage. Abnormality of the flowmeter is determined, based on a value of the output value therefrom assumed when the purging of the gaseous mixture is stopped. Alternatively or in combination, abnormality of the flowmeter is determined, based on a value of the output value therefrom assumed when the purging of the gaseous mixture is resumed after stoppage thereof.
摘要翻译： 用于内燃机的蒸发燃料清除控制系统包括布置在净化通道两侧的流量计，用于输出表示蒸发燃料和通过净化通道净化的空气的混合物的流量的输出值。 基于当气体混合物的清洗停止时假定的输出值的值来确定流量计的异常。 作为替代或组合，基于在停止后重新开始气体混合物的清洗时假定的输出值的值来确定流量计的异常。
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公开(公告)号：US5224456A
公开(公告)日：1993-07-06
申请号：US876981
申请日：1992-05-01
申请人： Fumio Hosoda , Hideo Moriwaki , Masakazu Kitamoto , Sachito Fujimoto , Kazumi Yamazaki , Takashi Kiyomura
发明人： Fumio Hosoda , Hideo Moriwaki , Masakazu Kitamoto , Sachito Fujimoto , Kazumi Yamazaki , Takashi Kiyomura
CPC分类号： F02D41/064 , F02D41/0035 , F02D41/0042 , F02M25/08
摘要： A starting fuel supply control system for an internal combustion engine having a purging passage connecting between a canister and an intake passage for purging a mixture of evaporative fuel from a fuel tank and air therethrough into the intake passage, and a purge control valve arranged across the purging passage for controlling the flow rate of the evaporative fuel to be supplied to the intake passage. An ECU detects a flow rate of an evaporative fuel component in the mixture flowing in the purging passage, and sets an amount of fuel to be supplied to the engine at the start thereof, based upon the detected flow rate of the evaporative fuel component.
摘要翻译： 一种用于内燃机的启动燃料供应控制系统，其具有连接在罐和进气通道之间的清洗通道，用于从燃料箱和空气通过的蒸发燃料的混合物吹入进气通道中;以及净化控制阀， 吹扫通道，用于控制要供应到进气通道的蒸发燃料的流量。 ECU检测在清洗通道中流动的混合物中的蒸发燃料成分的流量，并且基于检测到的蒸发燃料成分的流量，设定在起动时向发动机供给的燃料量。
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公开(公告)号：US5195495A
公开(公告)日：1993-03-23
申请号：US921158
申请日：1992-07-29
CPC分类号： F02D41/0045 , F02M25/08 , F02D41/0032 , F02M2025/0845
摘要： An evaporative fuel-purging control system for an internal combustion engine having a canister in which evaporative fuel from a fuel tank is adsorbed. One or more purging control valves are arranged across a purging pipe extending between the canister and an intake system. An ECU integrates an estimated value of a flow rate of evaporative fuel supplied to the engine, which is estimated as a purging flow rate in the purging pipe, in accordance with engine operating conditions when a specific one of the purging control valves is opened to thereby obtain an integrated purging flow rate value, and subtracts a predetermined decremental value from the integrated purging flow rate value when the specific one purging control valve is closed. When the integrated purging flow rate value is equal to or smaller than a predetermined lower limit value, the ECU decreases the flow rate of the evaporative fuel supplied to the intake system, based on the integrated purging flow rate value obtained above. When an air-fuel ratio correction coefficient value is equal to or greater than a predetermined value and at the same time the integrated purging flow rate value is equal to or greater than a predetermined value, the ECU increases the flow rate, based upon the integrated purging flow rate value.
摘要翻译： 一种用于内燃机的蒸发燃料清除控制系统，其具有吸附来自燃料箱的蒸发燃料的罐。 一个或多个清洗控制阀布置在在罐和进气系统之间延伸的吹扫管上。 ECU根据发动机的运转条件，将特定的排气控制阀打开时的发动机运转状态，估计为排气管内的净化流量的估计值，推定为发动机供给的蒸发燃料的流量的估计值 获得积分净化流量值，并且当特定的一个净化控制阀关闭时从积分净化流量值减去预定的减量值。 当积分净化流量值等于或小于预定下限值时，ECU基于上面获得的积分净化流量值来降低供给到进气系统的蒸发燃料的流量。 当空燃比校正系数值等于或大于预定值，并且同时积分净化流量值等于或大于预定值时，ECU基于积分 净化流量值。
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公开(公告)号：US5216998A
公开(公告)日：1993-06-08
申请号：US812722
申请日：1991-12-23
CPC分类号： F02D41/0032 , F02M25/08
摘要： An evaporative fuel-purging control system for an internal combustion engine having a canister in which evaporative fuel from a fuel tank is absorped. Purge control valves are arranged between the canister and the intake system of the engine for controlling the flow rate of evaporative fuel supplied from the canister to the intake system. An ECU is responsive to an output from an exhaust gas ingredient concentration sensor arranged in the exhaust system of the engine for calculating an air-fuel ratio correction coefficient, based upon the output from the exhaust gas ingredient concentration sensor and controlling the air-fuel ratio of a mixture supplied to the engine by the use of the air-fuel ratio correction coefficient. The ECU calculates an average value of the air-fuel ratio correction coefficient, and is responsive to the calculated average value for controlling the purge control valves.
摘要翻译： 一种用于内燃机的蒸发燃料净化控制系统，其具有吸收来自燃料箱的蒸发燃料的罐。 吹扫控制阀布置在发动机的罐和进气系统之间，用于控制从罐向进气系统供应的蒸发燃料的流量。 ECU根据排气成分浓度传感器的输出响应于发动机的排气系统中的输出，用于根据排气成分浓度传感器的输出计算空燃比校正系数，并控制空燃比 通过使用空燃比校正系数提供给发动机的混合物。 ECU计算空燃比校正系数的平均值，并响应计算出的平均值来控制排气控制阀。
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公开(公告)号：US5178117A
公开(公告)日：1993-01-12
申请号：US884690
申请日：1992-05-18
IPC分类号： F02M25/08
CPC分类号： F02M25/0809
摘要： An evaporative fuel-purging control system for an internal combustion engine comprises a mass flowmeter and a differential pressure type flowmeter arranged in a purging passage of the engine for measuring a flow rate of a mixture of evaporative fuel and air being purged. The flowmeters have different output characteristics relative to change in the concentration of evaporative fuel in the mixture from each other. Output values from the flowmeters are compared to obtain a difference or a ratio therebetween. Failure of at least one of the flowmeters is detected based upon the difference or the ratio.
摘要翻译： 用于内燃机的蒸发式燃料净化控制系统包括：质量流量计和差压式流量计，其布置在发动机的净化通道中，用于测量蒸发燃料和被净化空气的混合物的流量。 流量计相对于混合物中蒸发燃料的浓度的变化具有不同的输出特性。 比较来自流量计的输出值以获得差值或它们之间的比率。 基于差异或比例来检测至少一个流量计的故障。
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公开(公告)号：US08235028B2
公开(公告)日：2012-08-07
申请号：US12576286
申请日：2009-10-09
IPC分类号： F02M33/02
CPC分类号： F02M25/089 , F02M37/0082 , F02M37/10
摘要： A hermetically sealed fuel tank apparatus includes a pressure-resistant fuel tank for storing a fuel therein, the pressure-resistant fuel tank being capable of holding an internal pressure equal to or higher than the atmospheric pressure, a fuel vapor inlet pipe for introducing a fuel vapor produced in the pressure-resistant fuel tank, a canister contained in the pressure-resistant fuel tank and connected to the fuel vapor inlet pipe for adsorbing the fuel vapor, a drain passage through which the canister communicates with external air, and a shutoff valve connected to the drain passage and normally closed to hermetically seal the pressure-resistant fuel tank.
摘要翻译： 一种气密密封的燃料箱装置包括用于在其中储存燃料的耐压燃料箱，能够保持等于或大于大气压的内部压力的耐压燃料箱，用于引入燃料的燃料蒸汽入口管 在耐压燃料箱中产生的蒸汽，容纳在耐压燃料箱中并连接到用于吸附燃料蒸气的燃料蒸气入口管的罐，罐与外部空气连通的排放通道，以及截止阀 连接到排水通道并且通常关闭以气密地密封耐压油箱。
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公开(公告)号：US07380543B2
公开(公告)日：2008-06-03
申请号：US11605930
申请日：2006-11-28
申请人： Gaku Hatano , Koichi Hidano , Masakazu Kitamoto , Shigeo Hidai , Shoji Uhara , Hiroshi Kitamura , Takahiro Imamura
发明人： Gaku Hatano , Koichi Hidano , Masakazu Kitamoto , Shigeo Hidai , Shoji Uhara , Hiroshi Kitamura , Takahiro Imamura
CPC分类号： F02M25/089 , F02M37/0058 , F02M37/0088 , F02M37/10 , Y10T137/86196 , Y10T137/86212
摘要： In a fuel vapor release suppression system for a fuel tank, a main tank and a sub tank communicate with each other, and the sub tank and a canister communicate with each other. When the main tank has a higher temperature, fuel vapor of the main tank is supplied to the sub tank where the fuel vapor is liquefied. When the main tank has a lower temperature, fuel vapor of the sub tank is supplied to the main tank. At this time, low concentration fuel vapor is supplied from the canister to the main tank, thereby accelerating generation of fuel vapor corresponding to sub tank fuel vapor pressure, so that the sub tank fuel vapor pressure decreases. Therefore, liquefaction is accelerated in the sub tank when the main tank temperature increases. Thus, fuel vapor generated in a fuel tank is effectively liquified irrespective of ambient air temperature.
摘要翻译： 在用于燃料箱的燃料蒸汽释放抑制系统中，主油箱和副罐彼此连通，并且副罐和罐彼此连通。 当主油箱温度较高时，主油箱的燃料蒸气被供给到燃料蒸气液化的副油箱。 当主油箱温度较低时，副油箱的燃料蒸气被供应到主油箱。 此时，将低浓度燃料蒸气从罐供给到主罐，从而加速产生对应于副罐燃料蒸气压的燃料蒸汽，使得副罐燃料蒸气压降低。 因此，当主罐温度升高时，副罐中的液化加速。 因此，不管环境空气温度如何，在燃料箱中产生的燃料蒸气都被有效地液化。
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