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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
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。
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公开(公告)号：US5657627A
公开(公告)日：1997-08-19
申请号：US517857
申请日：1995-08-22
申请人： Shusuke Akazaki , Kotaro Miyashita , Ken Ogawa , Yoshihisa Hara
发明人： Shusuke Akazaki , Kotaro Miyashita , Ken Ogawa , Yoshihisa Hara
IPC分类号： F02D41/14
CPC分类号： F02D41/1441 , F02B2275/18 , F02D41/1456
摘要： An air-fuel ratio control system for an internal combustion engine having at least one catalytic converter arranged in the exhaust passage, comprises an ECU which changes air intake characteristics of the engine, based on operating conditions of the engine, and a plurality of exhaust gas component concentration sensors including at least upstream and downstream exhaust gas component concentration sensors arranged in the exhaust passage at respective locations upstream and downstream of the at least one catalytic converter. The air-fuel ratio of an air-fuel mixture to be supplied to the engine is controlled to a desired air-fuel ratio in a feedback manner responsive to an output from the upstream exhaust gas component concentration sensor. A feedback control parameter for use in the air-fuel ratio feedback control is calculated based on an output from the downstream exhaust gas component concentration sensor. The updating rate of the feedback control parameter is changed when the feedback control parameter is calculated, according to the air intake characteristics of the engine.
摘要翻译： 一种用于内燃机的空燃比控制系统，其具有布置在排气通道中的至少一个催化转化器，包括基于发动机的运行条件改变发动机的进气特性的ECU，以及多个废气 组分浓度传感器至少包括在所述至少一个催化转化器的上游和下游的相应位置处布置在所述排气通道中的上游和下游排气组分浓度传感器。 供应到发动机的空气燃料混合物的空燃比以响应于上游排气组分浓度传感器的输出的反馈方式被控制到期望的空燃比。 基于来自下游侧废气成分浓度传感器的输出，计算用于空燃比反馈控制的反馈控制参数。 根据发动机的进气特性，计算反馈控制参数时，反馈控制参数的更新率发生变化。
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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
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。
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公开(公告)号：US5426935A
公开(公告)日：1995-06-27
申请号：US64219
申请日：1993-05-19
申请人： Ken Ogawa , Yasunori Ehara
发明人： Ken Ogawa , Yasunori Ehara
CPC分类号： F02D41/1441 , F02D41/2454 , F02D41/1456 , F02D41/2448 , F02D41/2477
摘要： An air-fuel ratio control system for an internal combustion engine includes a LAF sensor and an O2 sensor arranged in an exhaust pipe at respective locations upstream and downstream of a catalytic converter. A desired air-fuel ratio coefficient used in calculating an amount of fuel supplied to the engine is calculated based on operating conditions of the engine, and corrected based on output from the O2 sensor. The air-fuel ratio of a mixture supplied to the engine is feedback-controlled to a stoichiometric air-fuel ratio based on the corrected desired air-fuel ratio coefficient. When the output from the O2 sensor falls within a predetermined range, the desired air-fuel ratio coefficient is not corrected, but held at an immediately preceding value thereof.
摘要翻译： 用于内燃机的空燃比控制系统包括在催化转化器的上游和下游的各个位置处布置在排气管中的LAF传感器和O2传感器。 根据发动机的运转条件，计算出用于计算供给发动机的燃料量所需的空燃比系数，并根据O2传感器的输出进行修正。 提供给发动机的混合物的空燃比基于校正的所需空燃比系数反馈控制为理论空燃比。 当O2传感器的输出落在预定范围内时，所需的空燃比系数不被校正，而是保持在其前一个值。
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公开(公告)号：US5386694A
公开(公告)日：1995-02-07
申请号：US110776
申请日：1993-08-23
申请人： Ken Ogawa , Yasunori Ehara , Kei Machida
发明人： Ken Ogawa , Yasunori Ehara , Kei Machida
CPC分类号： F02D37/02 , F01N3/2053 , F02D41/0002 , F02D41/047 , F02D41/1441 , F02P5/1516 , F02B2275/18 , F02D41/1456 , Y02T10/42 , Y02T10/46
摘要： A control system for controlling operation of an internal combustion engine detects a selected one of two exhaust modes: a first exhaust mode in which exhaust gases are guided through a first catalytic converter upstream of a second catalytic converter, and a second exhaust mode in which exhaust gases are guided through a bypass passage bypassing the first catalytic converter. A control mode is determined according to the selected one of the two exhaust modes, in which the operation of the engine is to be controlled by the control system.
摘要翻译： 用于控制内燃机的操作的控制系统检测两种排气模式中选择的一种：第一排气模式，其中排气通过第二催化转化器上游的第一催化转化器引导，而第二排气模式中排气 气体被引导通过绕过第一催化转化器的旁路通道。 根据所选择的两种排气模式中的一种来确定控制模式，其中发动机的操作将由控制系统控制。
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26.发明授权
公开(公告)号：US5383126A
公开(公告)日：1995-01-17
申请号：US951232
申请日：1992-09-25
申请人： Ken Ogawa , Yoshihisa Hara , Kotaro Miyashita , Kei Machida
发明人： Ken Ogawa , Yoshihisa Hara , Kotaro Miyashita , Kei Machida
CPC分类号： F02D41/0072 , F02D41/047 , F02P5/1516 , Y02T10/46 , Y02T10/47
摘要： A control system for an internal combustion engine estimates an amount of adherent fuel adhering to the inner surface of the intake passage, as well as an amount of carried-off fuel evaporated form fuel adhering to the inner surface of the intake passage and carried into combustion chambers, determines an amount of supply fuel to be supplied to the engine, based upon operating conditions of the engine, the estimated adherent fuel amount, and the estimated carried-off fuel amount, and supplies the determined supply fuel amount into the intake passage. The control system calculates an amount of exhaust gases to be recirculated from the exhaust passage to the intake passage, and corrects the estimated adherent fuel amount and the estimated carried-off fuel amount, based upon the calculated exhaust gas recirculating amount, based upon the calculated exhaust gas recirculating amount. Advantageously, the exhaust gas recirculating amount is calculated based upon dynamic characteristics of an exhaust gas recirculation control valve and those of exhaust gases being recirculated.
摘要翻译： 用于内燃机的控制系统估计粘附在进气通道的内表面上的附着燃料的量以及附着在进气通道的内表面上并被运载到燃烧中的燃料蒸发的燃料蒸发量 根据发动机的运行条件，估计的粘附燃料量和估计的排出燃料量，确定供给到发动机的供给燃料的量，并将确定的供给燃料量供给到进气通道中。 控制系统计算要从排气通道再循环到进气通道的废气量，并基于计算出的废气再循环量来校正估计的粘附燃料量和估计的排出燃料量， 废气循环量。 有利地，基于废气再循环控制阀的动态特性和被再循环的废气的动态特性来计算废气再循环量。
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公开(公告)号：US07730717B2
公开(公告)日：2010-06-08
申请号：US11498163
申请日：2006-08-03
申请人： Ken Ogawa , Toru Kitamura
发明人： Ken Ogawa , Toru Kitamura
IPC分类号： F01N3/00
CPC分类号： F02B11/02 , F02B1/12 , F02D13/0215 , F02D13/0253 , F02D13/0265 , F02D41/0062 , F02D41/0225 , F02D41/024 , F02D41/3035 , F02D41/3076 , F02M26/01 , F02M26/05 , F02M26/10 , Y02T10/18 , Y02T10/47
摘要： In a control system for a compression-ignition engine whose operation is switchable between a compression-ignition operation in which an air-fuel mixture supplied to a combustion chamber auto-ignites to burn owing to compression and a spark-ignition operation in which the air-fuel mixture is ignited to burn by a spark of a spark plug, it is determined whether a predetermined permissible condition to permit switching from the spark-ignition to the compression-ignition operation is satisfied, and switching from the spark-ignition operation to the compression-ignition operation is permitted when the predetermined permissible condition is satisfied, thereby enabling to expand the compression-ignition operation utilization region so long as permissible in light of the engine operating condition.
摘要翻译： 在用于压燃式发动机的控制系统中，其操作可在压缩点火操作之间切换，其中供给燃烧室的空气燃料混合物由于压缩而自动点燃以及火花点火操作，其中空气 燃料混合物通过火花塞的火花点火燃烧，确定是否满足允许从火花点火到压缩点火操作的切换的预定允许条件，并且从火花点火操作切换到 当满足预定的允许条件时，允许压缩点火操作，从而能够根据发动机工作状态长时间地扩大压缩点火操作利用区域。
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公开(公告)号：US07290521B2
公开(公告)日：2007-11-06
申请号：US11498172
申请日：2006-08-03
申请人： Ken Ogawa , Toru Kitamura
发明人： Ken Ogawa , Toru Kitamura
IPC分类号： F02B11/00
CPC分类号： F02D41/3076 , F02D13/0253 , F02D41/0002 , F02D41/006 , F02D41/221 , F02D41/3035 , F02D2041/001 , F02M26/01 , Y02T10/18 , Y02T10/42 , Y02T10/47
摘要： In a control system for a compression-ignition engine whose operation is switchable between a compression-ignition operation in which an air-fuel mixture supplied to a combustion chamber auto-ignites to burn owing to compression and a spark-ignition operation in which the air-fuel mixture is ignited to burn by a spark of a spark plug, it is determined whether a predetermined prohibitive condition to prohibit switching from the spark-ignition to the compression-ignition operation is satisfied, and switching from the spark-ignition operation to the compression-ignition operation is prohibited when the predetermined prohibitive condition is satisfied, thereby enabling to avoid premature ignition and misfire and to prevent drivability and fuel consumption performance from being affected therefrom.
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29.发明申请EGR failure determination system and control system for internal combustion engine 失效EGR故障判定系统和内燃机控制系统公开(公告)号：US20070144502A1
公开(公告)日：2007-06-28
申请号：US11526804
申请日：2006-09-26
申请人： Ken Ogawa , Toru Kitamura
发明人： Ken Ogawa , Toru Kitamura
CPC分类号： F02D41/0002 , F02D13/0219 , F02D13/0246 , F02D13/0265 , F02D41/0062 , F02D41/0072 , F02D41/221 , F02D41/3035 , F02M26/01 , F02M26/48 , F02M26/49 , F02M26/53 , Y02T10/18 , Y02T10/42 , Y02T10/47
摘要： An EGR failure determination system for an internal combustion engine, which is capable of accurately determining failures of both an external EGR device and an internal EGR device, irrespective of whether the EGR amount is large or small, thereby making it possible to enhance marketability of the system. The EGR failure determination system includes an ECU. The ECU calculates an actual fresh air ratio, and sets a target value thereof. Further, it calculates a feedback correction coefficient according to the actual fresh air ratio and the target value, and controls an exhaust recirculation mechanism and three variable mechanism. When the feedback correction coefficient is not within a predetermined range, and if it is larger than 0.5, at least one of the three variable mechanism is determined to be faulty, whereas if it is not larger than 0.5, the exhaust recirculation mechanism is determined to be faulty.
摘要翻译： 一种用于内燃机的EGR故障确定系统，其能够精确地确定外部EGR装置和内部EGR装置的故障，而不管EGR量是大还是小，从而使得可以提高 系统。 EGR故障判定系统包括ECU。 ECU计算实际的新鲜空气比，并设定其目标值。 此外，它根据实际新鲜空气比和目标值计算反馈校正系数，并控制排气再循环机构和三个可变机构。 当反馈校正系数不在预定范围内时，如果大于0.5，则三个可变机构中的至少一个被确定为有故障，而如果不大于0.5，则将排气再循环机构确定为 有错误
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30.发明授权Brake negative pressure control apparatus and method, and engine control unit for internal combustion engine 失效制动负压控制装置和方法，以及用于内燃机的发动机控制单元公开(公告)号：US06773374B2
公开(公告)日：2004-08-10
申请号：US10294588
申请日：2002-11-15
申请人： Ken Ogawa , Choichi Sugawara , Kazuyoshi Ishii
发明人： Ken Ogawa , Choichi Sugawara , Kazuyoshi Ishii
IPC分类号： B60K4120
CPC分类号： F02D41/021 , B60T13/52 , B60T13/72 , B60T17/221 , F02D41/3029 , F02D41/3076 , F02D2200/602 , F02D2250/41 , Y10T477/81 , Y10T477/817 , Y10T477/87
摘要： A brake negative pressure control apparatus and method, and an engine control unit for an internal combustion engine are provided for ensuring a negative pressure within a brake booster and a stable combustion while avoiding a complicated control. The brake negative pressure control apparatus comprises a negative pressure sensor for detecting a negative pressure within the brake booster, and an ECU for disabling the combustion mode to be set to the stratified combustion when the detected negative pressure is lower than a first predetermined negative pressure. The ECU controls a throttle valve opening in accordance with a target throttle valve opening in a homogeneous combustion mode when the ECU disables the combustion mode to be set to the stratified combustion.
摘要翻译： 制动负压控制装置和方法以及用于内燃机的发动机控制单元用于确保制动助力器内的负压和稳定的燃烧，同时避免复杂的控制。 制动负压控制装置包括用于检测制动助力器内的负压的负压传感器和当检测到的负压低于第一预定负压时将燃烧模式设定为分层燃烧的ECU。 当ECU将燃烧模式设置为分层燃烧时，ECU以均匀燃烧模式中的目标节气门开度控制节气门开度。
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