公开(公告)号：US5158063A

公开(公告)日：1992-10-27

申请号：US812705

申请日：1991-12-23

申请人： Fumio Hosoda ,  Sachito Fujimoto ,  Hiroshi Ito ,  Shunji Takahashi

发明人： Fumio Hosoda ,  Sachito Fujimoto ,  Hiroshi Ito ,  Shunji Takahashi

IPC分类号： F02D41/02 ,  F02D41/14 ,  F02D45/00

CPC分类号： F02D41/1488 ,  F02D41/0235 ,  F02D41/1446 ,  F02D41/1486 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/0804

摘要： An air-fuel ratio control method for an internal combustion engine. The air-fuel ratio of an air-fuel mixture supplied to the engine is feedback-controlled to a predetermined value in response to an output from the exhaust gas ingredient concentration sensor. The temperature of at least one component part of the engine, which should be controlled, is estimated based on the detected temperature of exhaust gases, engine rotational speed, and engine load. The air-fuel ratio of the air-fuel mixture is inhibited from being feedback-controlled but enriched, when the estimated temperature of any one of the at least one component part of the engine is higher than a corresponding predetermined value.

摘要翻译： 一种用于内燃机的空燃比控制方法。 供应到发动机的空气燃料混合物的空燃比响应于来自排气成分浓度传感器的输出被反馈控制到预定值。 基于检测到的排气温度，发动机转速和发动机负荷来估计发动机的至少一个组成部分的温度，其应该被控制。 当发动机的至少一个部件中的任何一个的估计温度高于相应的预定值时，空气燃料混合物的空燃比被禁止反馈控制但是富集。

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。

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

IPC分类号： F02D41/02 ,  F02D41/00 ,  F02D45/00 ,  F02M25/08

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。

公开(公告)号：US5016596A

公开(公告)日：1991-05-21

申请号：US516100

申请日：1990-04-27

申请人： Akira Fujimura ,  Sachito Fujimoto ,  Fumio Hosoda

发明人： Akira Fujimura ,  Sachito Fujimoto ,  Fumio Hosoda

IPC分类号： F02D41/10 ,  F02D41/14

CPC分类号： F02D41/10 ,  F02D41/1474 ,  F02D41/1488

摘要： A method of controlling the air-fuel ratio of an air-fuel mixture supplied to an internal combustion engine including the step of interrupting the feedback control of the air-fuel ratio responsive to a detected value of the concentration of an exhaust gas ingredient after a high load operating condition of the engine in which a detected load on the engine is above a predetermined reference value has continued over a predetermined time period. Calculation is made of a value of a parameter dependent on a ratio of a time period over which the detected load on the engine continued to be above a predetermined value to a time period over which the detected load on the engine continued to be below the predetermined value. The predetermined time is set based on the calculated value of the parameter dependent on the ratio. The predetermined value may be equal to the predetermined reference value, or alternatively may be smaller than the predetermined reference value. Alternatively, the rotational speed of the engine may be detected and counting of the predetermined time period is started when the detected rotational speed of the engine exceeds a predetermined value during the feedback control of the air-fuel ratio.

摘要翻译： 一种控制供给内燃机的空气燃料混合物的空燃比的方法，包括以下步骤：响应于废气成分的浓度的检测值，中断空燃比的反馈控制 发动机的检测负载高于预定参考值的发动机的高负载运行状态在预定时间段内持续。 根据发动机检测到的负载持续高于预定值的时间段的比例，依次检测参考值，该时间周期，检测到的发动机负荷继续低于预定值 值。 该预定时间是基于取决于比率的参数的计算值而设定的。 预定值可以等于预定的参考值，或者可以小于预定的参考值。 或者，可以检测发动机的转速，并且在空燃比的反馈控制期间当发动机的检测转速超过预定值时，开始计时预定时间段。

公开(公告)号：US4993393A

公开(公告)日：1991-02-19

申请号：US559907

申请日：1990-07-30

申请人： Fumio Hosoda ,  Sachito Fujimoto ,  Hiroshi Ono ,  Katsushi Watanabe

发明人： Fumio Hosoda ,  Sachito Fujimoto ,  Hiroshi Ono ,  Katsushi Watanabe

IPC分类号： F02D41/14

CPC分类号： F02D41/1483 ,  F02D41/1487

摘要： A method of controlling air-fuel ratio of a mixture supplied to an internal combustion engine in a feedback manner responsive to an output signal from an exhaust gas concentration sensor. The air-fuel ratio of the mixture is controlled to a desired value by means of proportional control and integral control. The proportional control is inhibited, when the value of the output signal has changed from a lean side to a rich side with respect to a predetermined reference value while the engine is operating in one of a predetermined high load condition and a predetermined high rotational speed condition.

摘要翻译： 一种响应于来自排气浓度传感器的输出信号以反馈方式控制供给内燃机的混合物的空燃比的方法。 通过比例控制和积分控制将混合物的空燃比控制到所需的值。 当发动机在预定的高负载状态和预定的高转速条件之一下操作时，当输出信号的值相对于预定的参考值从稀薄侧变为富侧时，比例控制被禁止 。

公开(公告)号：US5216998A

公开(公告)日：1993-06-08

申请号：US812722

申请日：1991-12-23

申请人： Fumio Hosoda ,  Sachito Fujimoto ,  Masakazu Kitamoto ,  Kazumi Yamazaki

发明人： Fumio Hosoda ,  Sachito Fujimoto ,  Masakazu Kitamoto ,  Kazumi Yamazaki

IPC分类号： F02D41/14 ,  F02D41/00 ,  F02M25/08

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。

公开(公告)号：US5216995A

公开(公告)日：1993-06-08

申请号：US876982

申请日：1992-05-01

申请人： Fumio Hosoda ,  Sachito Fujimoto ,  Masashi Uchiyama ,  Toshikazu Oketani ,  Yoshiharu Abe ,  Kazumi Yamazaki ,  Teruo Wakashiro ,  Hideo Moriwaki

发明人： Fumio Hosoda ,  Sachito Fujimoto ,  Masashi Uchiyama ,  Toshikazu Oketani ,  Yoshiharu Abe ,  Kazumi Yamazaki ,  Teruo Wakashiro ,  Hideo Moriwaki

IPC分类号： F02D41/02 ,  F02D41/00 ,  F02D41/04 ,  F02D45/00 ,  F02M25/08

CPC分类号： F02D41/0045 ,  F02D41/0032 ,  F02D41/0042

摘要： A mass flowmeter outputs an output value indicative of the flow rate of a gaseous mixture containing evaporative fuel and being purged into the intake system of an internal combustion engine. A calculated value of the flow rate of the mixture is obtained based on a plurality of operating parameters of the engine. The actual flow rate of the mixture and/or the actual flow rate of the evaporative fuel are/is calculated based on the output value from the mass flowmeter and the calculated value based on the engine operating parameters. The concentration of the evaporative fuel is calculated from the calculated actual flow rates of the evaporative fuel and the mixture. The calculated actual flow rate is compared with a desired flow rate value, and a purge control valve is controlled based on results of the comparison. A basic amount of fuel supplied to the engine is corrected based on the calculated actual flow rate of the evaporative fuel.

摘要翻译： 质量流量计输出表示含有蒸发燃料的气体混合物的流量并被清除到内燃机的进气系统中的输出值。 基于发动机的多个操作参数获得混合物的流量的计算值。 基于来自质量流量计的输出值和基于发动机运转参数的计算值计算混合物的实际流量和/或蒸发燃料的实际流量。 蒸发燃料的浓度由计算出的蒸发燃料和混合物的实际流量计算。 将计算出的实际流量与期望的流量值进行比较，并且基于比较的结果控制清洗控制阀。 基于计算出的蒸发燃料的实际流量来校正供给发动机的基本燃料量。

公开(公告)号：US5178117A

公开(公告)日：1993-01-12

申请号：US884690

申请日：1992-05-18

申请人： Sachito Fujimoto ,  Fumio Hosoda ,  Masakazu Kitamoto

发明人： Sachito Fujimoto ,  Fumio Hosoda ,  Masakazu Kitamoto

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。

公开(公告)号：US5263461A

公开(公告)日：1993-11-23

申请号：US922422

申请日：1992-07-31

申请人： Sachito Fujimoto ,  Fumio Hosoda ,  Masakazu Kitamoto ,  Kojiro Tsutsumi

发明人： Sachito Fujimoto ,  Fumio Hosoda ,  Masakazu Kitamoto ,  Kojiro Tsutsumi

IPC分类号： F02D41/00 ,  F02D41/22 ,  F02M25/08 ,  F02M33/02 ,  F02B77/00

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。

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

IPC分类号： F02D41/00 ,  F02D41/02 ,  F02D41/06 ,  F02D41/34 ,  F02M25/08

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。