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    Catalyst deterioration-detecting device for internal combustion engines
    1.
    发明授权
    Catalyst deterioration-detecting device for internal combustion engines 失效
    内燃机用催化剂劣化检测装置

    公开(公告)号：US5357754A

    公开(公告)日：1994-10-25

    申请号：US122362

    申请日：1993-09-17

    申请人： Ken Ogawa ,  Atsushi Kato ,  Yoshikazu Oshima

    发明人： Ken Ogawa ,  Atsushi Kato ,  Yoshikazu Oshima

    IPC分类号： F01N3/18 ,  F01N3/20 ,  F01N11/00 ,  F02B77/08 ,  F02D45/00 ,  G01M15/04 ,  F02D41/14

    CPC分类号： F01N11/007 ,  F01N2550/02 ,  F02B2275/18 ,  F02D41/1456 ,  Y02T10/47

    摘要： A catalyst deterioration-detecting device for an internal combustion engine has at least one catalyst arranged in an exhaust passage of the engine,for purifying exhaust gases emitted from the engine, first and second exhaust component concentration sensors arranged in the exhaust passage upstream and downstream of the catalyst, respectively. The catalyst deterioration-detecting device calculates an average value of an output value from the second exhaust component concentration sensor, calculates an output fluctuation width with respect to the average value, based on the output value from the second exhaust component concentration sensor, and determines whether the catalyst is deteriorated, based on the calculated average value and the calculated output fluctuation width. The detection of the catalyst deterioration is carried out when the engine is in a predetermined operating condition defined by engine temperature, engine speed and engine load.

    摘要翻译： 一种用于内燃机的催化剂劣化检测装置，具有布置在发动机的排气通道中的至少一个催化剂，用于净化从发动机排放的废气，布置在排气通道中的排气通道中的上游和下游的第一和第二排气成分浓度传感器 催化剂。 催化剂劣化检测装置根据来自第二排气成分浓度传感器的输出值，算出来自第二排气成分浓度传感器的输出值的平均值，算出相对于平均值的输出变动幅度， 基于计算的平均值和计算的输出波动宽度，催化剂劣化。 当发动机处于由发动机温度，发动机转速和发动机负荷限定的预定操作条件时，执行催化剂劣化的检测。

    Catalyst deterioration-detecting system for internal combustion engines
    2.
    发明授权
    Catalyst deterioration-detecting system for internal combustion engines 失效
    内燃机用催化剂劣化检测系统

    公开(公告)号：US5713197A

    公开(公告)日：1998-02-03

    申请号：US533209

    申请日：1995-09-25

    申请人： Ken Ogawa ,  Hidehito Ikebe ,  Yoshikazu Oshima ,  Yasunori Ehara

    发明人： Ken Ogawa ,  Hidehito Ikebe ,  Yoshikazu Oshima ,  Yasunori Ehara

    IPC分类号： F02B77/08 ,  F01N3/20 ,  F01N11/00 ,  F02D41/14 ,  F02P5/15 ,  F01N3/28

    CPC分类号： F02P5/1516 ,  F01N11/007 ,  F01N2550/02 ,  F01N2900/0422 ,  F02B2275/18 ,  F02D41/1456 ,  Y02T10/46 ,  Y02T10/47

    摘要： There is provided a catalyst deterioration-detecting system for an internal combustion engine having at least one catalyst arranged in the exhaust passage, for purifying noxious components present in exhaust gases emitted from the engine, and an exhaust gas component concentration sensor arranged in the exhaust passage at a location downstream of the catalyst, for detecting concentration of a specific component in the exhaust gases. An ECU of the system controls the ignition timing of the engine, and detects the degree of deterioration of the catalyst, based on an output value from the exhaust gas component concentration sensor. The ignition timing of the engine is retarded in dependence on the detected degree of deterioration of the catalyst.

    摘要翻译： 提供了一种用于内燃机的催化剂劣化检测系统，其具有布置在排气通道中的至少一个催化剂，用于净化从发动机排放的废气中存在的有害成分，以及布置在排气通道中的排气组分浓度传感器 在催化剂下游的位置处，用于检测废气中特定组分的浓度。 系统的ECU控制发动机的点火正时，并根据来自排气成分浓度传感器的输出值检测催化剂的劣化程度。 根据检测到的催化剂的劣化程度，发动机的点火正时被延迟。

    Ignition timing control system for internal combustion engines
    3.
    发明授权
    Ignition timing control system for internal combustion engines 失效
    内燃机点火正时控制系统

    公开(公告)号：US5509389A

    公开(公告)日：1996-04-23

    申请号：US343104

    申请日：1994-11-22

    申请人： Yoshikazu Oshima ,  Ken Ogawa ,  Toshiyuki Nishida

    发明人： Yoshikazu Oshima ,  Ken Ogawa ,  Toshiyuki Nishida

    IPC分类号： F02D37/02 ,  F02D41/04 ,  F02D41/10 ,  F02D41/12 ,  F02D41/34 ,  F02D43/00 ,  F02P5/15

    CPC分类号： F02P5/1504 ,  F02D37/02 ,  F02D41/047 ,  F02D41/126 ,  F02B2275/18 ,  Y02T10/46

    摘要： An ignition timing control system for an internal combustion engine is associated with a fuel injection amount control system for calculating an amount of fuel to be supplied to the engine, based on operating conditions of the engine, correcting the calculated amount of fuel, based on an adherent amount of fuel adhering to the inner wall surface of the intake passage, and a carried-off amount of fuel to be carried off from the adherent fuel into each combustion chamber of the engine, and injecting the corrected fuel amount into the intake passage. The ignition timing control system comprises an ECU which detects whether the engine has been recovered from a fuel cut state to a fuel supply state, and calculates ignition timing of the engine, based on operating conditions of the engine detected by engine operating parameter sensors, including pressure within the intake passage. A retard amount by which the ignition timing is to be retarded is calculated based on the detected operating conditions of the engine when it is detected that the engine has been recovered from the fuel cut state to the fuel supply state. Further, the ignition timing is corrected based on the calculated retard amount.

    摘要翻译： 一种用于内燃机的点火正时控制系统与用于计算供给到发动机的燃料量的燃料喷射量控制系统相关联，该燃料喷射量控制系统基于发动机的操作条件，基于 粘附在进气通道的内壁表面上的附着量的燃料，以及将从附着燃料排出到发动机的每个燃烧室中的燃料的排出量，并将校正的燃料量注入进气通道。 点火正时控制系统包括ECU，其检测发动机是否已经从燃料切断状态恢复到燃料供给状态，并且基于由发动机操作参数传感器检测到的发动机的运行状况来计算发动机的点火正时，包括 进气通道内的压力。 当检测到发动机已经从燃料切断状态恢复到燃料供给状态时，基于检测到的发动机的运行状况来计算点火正时延迟的延迟量。 此外，基于所计算的延迟量来校正点火正时。

    Control system for internal combustion engines
    4.
    发明授权
    Control system for internal combustion engines 失效
    内燃机控制系统

    公开(公告)号：US5638792A

    公开(公告)日：1997-06-17

    申请号：US313442

    申请日：1994-09-27

    申请人： Ken Ogawa ,  Yoshikazu Oshima

    发明人： Ken Ogawa ,  Yoshikazu Oshima

    IPC分类号： F02D41/04

    CPC分类号： F02D41/047 ,  F02B2275/18

    摘要： A control system for an internal combustion engine comprises an ECU which calculates an amount of fuel to be supplied to the engine and determines a direct supply ratio and a carry-off ratio, based on operating conditions of the engine. The direct supply ratio is a ratio of a fuel amount directly drawn into the engine in a predetermined operating cycle of the engine to the whole fuel amount injected in the same operating cycle, and the carry-off ratio is a ratio of a fuel amount carried off the inner surface of the intake pipe and drawn into the engine in the predetermined operating cycle to the whole fuel amount which adhered to the inner surface of the intake pipe in an operating cycle immediately preceding the predetermined operating cycle. An adherent fuel amount which is to adhere to the intake pipe inner surface in the predetermined operating cycle is estimated based on the direct supply ratio and the carry-off ratio, and the carried-off fuel amount is estimated based on the direct supply ratio and the adherent fuel amount. The supply fuel amount is corrected based on the estimated adherent fuel amount and carried-off fuel amount, and then the corrected fuel amount is injected into the engine. The direct supply ratio and the carry-off ratio are corrected when the two ratios are in a predetermined relationship.

    摘要翻译： 内燃机的控制系统包括：ECU，其根据发动机的运转条件计算供给到发动机的燃料量，并确定直接供给比和起动比。 直接供给比是在发动机的预定运转循环中直接吸入发动机的燃料量与在同一运转循环中喷射的全部燃料量的比例，起动比是所携带的燃料量的比例 离开进气管的内表面，并在预定操作循环中被吸入发动机，使其在紧接在预定操作循环之前的操作循环中附着到进气管的内表面的整个燃料量。 基于直接供给比和起始比来估计在预定运行周期中粘附到进气管内表面的粘附燃料量，并且基于直接供给比估计排出燃料量， 附着燃料量。 基于估计的粘附燃料量和排出燃料量来校正供给燃料量，然后将校正后的燃料量注入发动机。 当两个比率处于预定关系时，校正直接供应比和起始比。

    Air-fuel ration control system for internal combustion engines
    5.
    发明授权
    Air-fuel ration control system for internal combustion engines 失效
    内燃机空燃比控制系统

    公开(公告)号：US5483938A

    公开(公告)日：1996-01-16

    申请号：US313376

    申请日：1994-09-27

    申请人： Yoshikazu Oshima ,  Ken Ogawa

    发明人： Yoshikazu Oshima ,  Ken Ogawa

    IPC分类号： F02M25/07 ,  F02D21/08 ,  F02D41/00 ,  F02D41/02 ,  F02D41/04 ,  F02D43/00 ,  F02D45/00 ,  F02M51/00

    CPC分类号： F02D41/0072 ,  F02M26/48 ,  Y02T10/47

    摘要： An air-fuel ratio control system for an internal combustion engine controls an amount of fuel supplied to the engine. Operating conditions of the engine, including engine rotational speed and intake pressure, are detected. Also detected is a valve opening of a recirculation control valve arranged in an exhaust recirculation passage, for controlling recirculation of exhaust gases. An amount of recirculation gas is determined based on a detected value of the valve opening of the recirculation control valve. A fuel supply amount is calculated based on the engine rotational speed and the intake pressure. The fuel supply amount is corrected based on the amount of recirculation gas determined.

    摘要翻译： 用于内燃机的空燃比控制系统控制供给发动机的燃料量。 检测发动机的运行状况，包括发动机转速和进气压力。 还检测到设置在排气再循环通道中的再循环控制阀的阀开口，用于控制废气的再循环。 基于再循环控制阀的阀开度的检测值来确定再循环气体的量。 基于发动机转速和进气压力计算燃料供给量。 基于确定的再循环气体的量来校正燃料供给量。

    Control system for internal combustion engines
    6.
    发明授权
    Control system for internal combustion engines 失效
    内燃机控制系统

    公开(公告)号：US5426938A

    公开(公告)日：1995-06-27

    申请号：US122190

    申请日：1993-09-17

    申请人： Ken Ogawa ,  Yoshikazu Oshima ,  Yasunori Ehara ,  Kei Machida ,  Atsushi Kato

    发明人： Ken Ogawa ,  Yoshikazu Oshima ,  Yasunori Ehara ,  Kei Machida ,  Atsushi Kato

    IPC分类号： F02D21/08 ,  F02D37/02 ,  F02D41/00 ,  F02D41/04 ,  F02M25/08 ,  F02P5/04 ,  F02D43/00

    CPC分类号： F02D41/0065 ,  F02D37/02 ,  F02D41/0042 ,  F02D41/0045 ,  F02D41/005 ,  F02D41/047 ,  F02M25/08 ,  F02P5/045 ,  F02B2275/18 ,  F02D41/0047 ,  Y02T10/47

    摘要： A control system for an internal combustion engine according to one aspect of the invention calculates a total amount of evaporative fuel purged from a canister based on dynamic characteristics and concentration of purged gas. The system calculates an amount of evaporative fuel supplied to the combustion chamber of the engine based on the total amount of evaporative fuel and depending on dynamic characteristics of the purged gas. Then, the system determines a required amount of fuel to be injected by a fuel injection valve based on the amount of evaporative fuel supplied to the combustion chamber. A control system according to another aspect of the invention calculates an amount of fuel to be injected by the injection valve and the ratio of the amount of fuel to be injected to the amount of fuel to be purged from the canister based on operating conditions of the engine, and based on this ratio, controls the purge control valve and at the same time decreases the amount of fuel to be injected, while setting a limit to this ratio for maintaining the linear relationship of the valve opening period of the fuel injection valve and the fuel injection amount.

    摘要翻译： 根据本发明的一个方面的用于内燃机的控制系统基于动态特性和净化气体的浓度来计算从罐排出的蒸发燃料的总量。 该系统基于蒸发燃料的总量和取决于净化气体的动态特性来计算供应到发动机的燃烧室的蒸发燃料的量。 然后，系统基于供给到燃烧室的蒸发燃料量，确定燃料喷射阀所要喷射的燃料量。 根据本发明的另一方面的控制系统基于所述喷射阀的操作条件来计算要由所述喷射阀喷射的燃料量和要喷射的燃料量与要从所述罐排出的燃料量的比率 发动机，并且基于该比例，控制排气控制阀，并且同时减少要喷射的燃料量，同时设定该比率的极限，以保持燃料喷射阀的阀打开周期和 燃料喷射量。

    Air-fuel ratio control system for internal combustion engines
    7.
    发明授权
    Air-fuel ratio control system for internal combustion engines 失效
    内燃机空燃比控制系统

    公开(公告)号：US5353773A

    公开(公告)日：1994-10-11

    申请号：US51877

    申请日：1993-04-26

    申请人： Ken Ogawa ,  Yoshikazu Oshima ,  Kei Machida

    发明人： Ken Ogawa ,  Yoshikazu Oshima ,  Kei Machida

    IPC分类号： F02D41/04 ,  F02D41/14 ,  F02D41/34 ,  F02D45/00

    CPC分类号： F02D41/047 ,  F02D41/1483 ,  F02B2275/14 ,  F02D41/1456 ,  Y02T10/123

    摘要： An air-fuel ratio control system for an internal combustion engine calculates an amount of fuel to be supplied to the engine in response to the rotational speed of the engine and a parameter indicative of load on the engine, and an amount of fuel injected into an intake passage and adhering to the inner surface of the intake passage, based upon a direct supply ratio and a carry-off ratio. A feedback correction value is set to such a value that an air-fuel ratio in exhaust gases from the engine becomes equal to a desired value, and the amount of fuel calculated as above is corrected by the direct supply ratio, the carry-off ratio, and the feedback correction value set as above. A control speed at which the feedback correction value is corrected is set based upon at least one of the direct supply ratio and the carry-off ratio.

    摘要翻译： 用于内燃机的空燃比控制系统响应于发动机的转速和指示发动机的负荷的参数来计算供给到发动机的燃料量，以及喷射到发动机的燃料量 进气通道，并且基于直接供应比和起降比率附着在进气通道的内表面上。 将反馈校正值设定为使来自发动机的排气中的空燃比成为期望值的值，并且通过直接供给比率校正上述计算出的燃料量，将起动比 ，反馈校正值如上所述。 基于直接供给比和起动比中的至少一个来设定校正反馈修正值的控制速度。

    Control system for internal combustion engines
    9.
    发明授权
    Control system for internal combustion engines 失效
    内燃机控制系统

    公开(公告)号：US5343846A

    公开(公告)日：1994-09-06

    申请号：US156070

    申请日：1993-11-23

    申请人： Ken Ogawa ,  Yoshikazu Oshima

    发明人： Ken Ogawa ,  Yoshikazu Oshima

    IPC分类号： F02D45/00 ,  F02D41/00 ,  F02M25/08 ,  F02M33/02 ,  F02D41/04

    CPC分类号： F02D41/0045 ,  F02B2275/18 ,  F02D41/0042

    摘要： A control system for an internal combustion engine controls an amount of auxiliary air supplied to the engine in the following manner: Concentration of evaporative fuel contained in a gas purged from an evaporative emission control system into an intake passage of the engine is calculated based on a purging flow rate estimated based on operating conditions of the engine, and an output from a flowmeter arranged in the evaporative emission control system. A volume of the gas purged over a predetermined time period is calculated based on the output from the flowmeter. A parameter indicative of dynamic characteristics of the gas is calculated based on operating conditions of the engine. An amount of air contained in the purged gas drawn into a combustion chamber of the engine is calculated at least based on the concentration of evaporative fuel, the volume of the purged gas, and the parameter indicative of dynamic characteristics of the gas. The amount of auxiliary air supplied to the engine is controlled in a manner dependent on the amount of air contained in the purged gas.

    摘要翻译： 用于内燃机的控制系统以下列方式控制供应给发动机的辅助空气量：从蒸发排放控制系统吹入到发动机的进气通道中的气体中所含的蒸发燃料的浓度基于 基于发动机的运行条件估计的净化流量，以及来自设置在蒸发排放控制系统中的流量计的输出。 基于流量计的输出计算在预定时间段内净化的气体体积。 基于发动机的运行条件计算表示气体的动态特性的参数。 至少基于蒸发燃料的浓度，净化气体的体积和表示气体的动态特性的参数，计算吸入到发动机的燃烧室中的净化气体中所含的空气量。 供给到发动机的辅助空气的量以取决于吹扫气体中所含的空气量的方式进行控制。