公开(公告)号：US5591905A

公开(公告)日：1997-01-07

申请号：US524169

申请日：1995-08-31

申请人： Shinya Fujimoto ,  Hirofumi Ohuchi

发明人： Shinya Fujimoto ,  Hirofumi Ohuchi

IPC分类号： G01N27/409 ,  B01D53/86 ,  F01N3/20 ,  F01N11/00 ,  G01N27/00 ,  G01N27/26 ,  G01M15/00

CPC分类号： F01N11/007 ,  F01N2550/02 ,  F01N2900/0422 ,  Y02T10/47

摘要： A deterioration detecting apparatus for catalytic converter is provided to surely detect deterioration of a catalytic converter. In the deterioration detecting apparatus for catalytic converter, an electronic control unit decides whether or not a catalyst is activated in the catalytic converter for removing injurious ingredients from an exhaust gas of an engine, and the electronic control unit decides the deterioration of the catalyst only when it decides that the catalyst is activated. It is thereby possible to avoid erroneous decision of the deterioration since the deterioration of the catalyst is not decided when the catalytic converter is not activated.

摘要翻译： 提供一种用于催化转化器的劣化检测装置，用于可靠地检测催化转化器的劣化。 在催化转化器的劣化检测装置中，电子控制单元判定在用于从发动机的废气中除去有害成分的催化转化器中的催化剂是否活化，并且电子控制单元仅在 它决定催化剂被活化。 因此，可以避免由于催化剂未被活化而未决定催化剂的劣化时，会导致劣化的错误判定。

公开(公告)号：US5519992A

公开(公告)日：1996-05-28

申请号：US212740

申请日：1994-03-14

申请人： Yasuhiko Hosoya ,  Hirofumi Ohuchi ,  Tatsuhiko Takahashi

发明人： Yasuhiko Hosoya ,  Hirofumi Ohuchi ,  Tatsuhiko Takahashi

IPC分类号： F01N3/22 ,  F01N3/30 ,  F01N3/32 ,  F01N9/00 ,  F01N11/00 ,  F01N13/02 ,  F02D35/00 ,  F02D41/22 ,  F01N3/20

CPC分类号： F01N3/222 ,  F01N11/00 ,  F01N13/009 ,  F01N13/0097 ,  F01N3/22 ,  F01N3/306 ,  F01N3/32 ,  F01N9/00 ,  F02D35/0038 ,  F02D41/221 ,  F01N2550/14 ,  Y02T10/20 ,  Y02T10/40 ,  Y02T10/47

摘要： In an exhaust gas purification system for an internal combustion engine including a catalytic converter disposed in an exhaust pipe, an apparatus for controlling an amount and temperature of fresh air fed into the exhaust pipe so that optimal purification efficiency of the catalytic converter can realized. The apparatus includes an air pump for taking in fresh air, a control valve for controlling air flow, a heater for heating the air and the controller for controlling the pump, the valve and the hater in dependence on engine operation states so that nitrogen oxides, carbon monoxide and hydrocarbon contained in the exhaust gas can be removed to a maximum through reduction and oxidation reactions. An abnormality detecting device detects occurrence of abnormality in the air feeding control apparatus for ensuring fail-safe operation thereof.

摘要翻译： 在具有设置在排气管内的催化转化器的内燃机的排气净化系统中，能够实现供给到排气管的新鲜空气的量和温度的控制装置，从而能够实现催化转化器的最佳净化效率。 该装置包括用于吸入新鲜空气的空气泵，用于控制空气流量的控制阀，用于加热空气的加热器和用于根据发动机操作状态控制泵，阀和加热器的控制器，使得氮氧化物， 排气中所含的一氧化碳和烃可以通过还原和氧化反应去除最大程度。 异常检测装置检测供气控制装置中的异常发生，以确保其故障安全操作。

公开(公告)号：US5503131A

公开(公告)日：1996-04-02

申请号：US305711

申请日：1994-09-14

申请人： Hirofumi Ohuchi

发明人： Hirofumi Ohuchi

IPC分类号： F02D21/08 ,  F02M25/07 ,  H02P8/22 ,  H02P8/00

CPC分类号： H02P8/22 ,  F02D41/0077 ,  F02M26/54 ,  F02M26/67 ,  Y02T10/47

摘要： An exhaust gas recirculation control system includes a stepping motor driven valve for controlling the flow rate of exhaust gas through a recirculation pipe of an internal combustion engine, and arithmetic circuitry for calculating the exhaust gas recirculation flow rate in dependence on the operating state of the engine. A two-phase excitation driving scheme and a one/two-phase excitation driving scheme are exchangeably adopted for driving the stepping motor to control the opening of the recirculation control valve. When a rapid response is required, the two-phase excitation driving scheme is put into effect, with the one/two-phase excitation driving scheme being adopted when high resolution is required.

摘要翻译： 排气再循环控制系统包括用于控制通过内燃机的再循环管的排气流量的步进马达驱动阀和用于根据发动机的运行状态来计算废气再循环流量的运算电路 。 可交换地采用两相励磁驱动方案和一/二相励磁驱动方案来驱动步进电机以控制再循环控制阀的开启。 当需要快速响应时，两相励磁驱动方案实施，当需要高分辨率时采用一/二相励磁驱动方案。

公开(公告)号：US5488938A

公开(公告)日：1996-02-06

申请号：US397641

申请日：1995-03-02

申请人： Hirofumi Ohuchi

发明人： Hirofumi Ohuchi

IPC分类号： G01M15/04 ,  F02B77/08 ,  F02D41/22 ,  F02M25/07

CPC分类号： F02D41/0055 ,  F02M26/49 ,  F02D2200/0406 ,  F02M26/57 ,  Y02T10/47

摘要： A fault detecting apparatus for an exhaust gas recirculation control system of an internal combustion engine includes a throttle valve provided in an intake pipe of the engine, an exhaust gas recirculation pipe for introducing an exhaust gas of the engine to the intake pipe downstream of the throttle valve, an exhaust gas recirculation valve for regulating a recirculation flow rate of the exhaust gas, sensors for detecting operation state inclusive of an intake pressure, an exhaust gas recirculation valve control unit for controlling the exhaust gas recirculation valve in accordance with operation state information, a fault decision enabling condition detecting means for detecting satisfaction of the condition enabling the decision about occurrence of fault in the recirculation valve control unit on the basis of the operation state information, a unit for forcibly opening and/or closing the exhaust gas recirculation valve when the fault decision enabling condition is satisfied, a fault decision means for comparing a value derived from the intake pressures detected upon enforcive opening/closing of the exhaust gas recirculation control valve with a fault decision reference value to decide whether any fault occurs in the recirculation valve control unit, and a compensation means for compensating for influence of a parameter which affects the intake pressures detected upon enforcive opening/closing of the recirculation valve. The range within which the fault decision is enabled can be widened and/or reliability of the fault decision can be improved.

摘要翻译： 一种用于内燃机的废气再循环控制系统的故障检测装置，包括设置在发动机的进气管内的节流阀，用于将发动机的排气引入到节气门下游的进气管的排气再循环管 阀，用于调节废气的再循环流量的排气再循环阀，用于检测包括进气压力的运行状态的传感器，用于根据运行状态信息控制排气再循环阀的排气再循环阀控制单元， 故障判定启用条件检测装置，用于基于操作状态信息来检测能够判定再循环阀控制单元中的故障的发生的状态的满足度;强制打开和/或关闭排气再循环阀的单元， 故障判定使能条件满足，故障 决定装置，用于将从排气再循环控制阀的强制性打开/关闭检测到的进气压力导出的值与故障判定基准值进行比较，以决定在再循环阀控制单元中是否发生故障;以及补偿装置， 影响在强制开启/关闭再循环阀时检测到的进气压力的参数的影响。 可以扩大启用故障判定的范围，提高故障判定的可靠性。

公开(公告)号：US5417061A

公开(公告)日：1995-05-23

申请号：US272649

申请日：1994-07-11

申请人： Mie Maeda ,  Hirofumi Ohuchi

发明人： Mie Maeda ,  Hirofumi Ohuchi

IPC分类号： F01N3/20 ,  F01N11/00 ,  F02B77/08 ,  F02D41/14 ,  F02D41/22 ,  G01N27/417 ,  F01N3/00

CPC分类号： G01N27/4175 ,  F01N11/007 ,  F02D41/1441 ,  F01N2550/02 ,  Y02T10/47

摘要： A device for detecting the deterioration of a catalyst wherein oxygen sensors are provided on the upstream and downstream sides of the catalytic converter. Circuitry is provided for calculating integration values corresponding to areas surrounded by output signals of the oxygen sensors and designated signals; for calculating time periods between which the sensor signals reverse polarity with respect to the designated signals; for calculating a parameter for determining deterioration of the catalyst based on the integration values, the time periods or a combination of both; for determining deterioration of the catalyst by comparing the calculated parameter with a predetermined value; and for issuing an alarm when the catalyst is determined as deteriorated.

摘要翻译： 一种用于检测催化剂劣化的装置，其中氧传感器设置在催化转化器的上游侧和下游侧。 提供电路用于计算对应于由氧传感器和指定信号的输出信号包围的区域的积分值; 用于计算传感器相对于指定信号反向极性的时间段; 用于基于积分值，时间段或两者的组合来计算用于确定催化剂劣化的参数; 用于通过将所计算的参数与预定值进行比较来确定催化剂的劣化; 并且当催化剂确定为劣化时发出报警。

公开(公告)号：US5152273A

公开(公告)日：1992-10-06

申请号：US778245

申请日：1991-10-17

申请人： Hirofumi Ohuchi

发明人： Hirofumi Ohuchi

IPC分类号： F02D21/08 ,  F02D41/00 ,  F02D41/22 ,  F02M25/07 ,  G01M15/10

CPC分类号： G01M15/102 ,  F02D41/005 ,  F02D41/221 ,  F02M26/47 ,  F02M26/49 ,  F02M26/57 ,  Y02T10/47

摘要： An exhaust gas recirculation control device adapted to control a recirculation of part of exhaust gas of an internal combustion engine back to the engine which comprises a recirculation pipe for recirculating the exhaust gas of the internal combustion engine back to an intake air pipe; a recirculation valve for controlling a flow quantity of the exhaust gas flowing in the recirculation pipe; a recirculation valve passage area controlling means for controlling a passage area of the recirculation valve; a running condition detecting means for detecting a running condition of the internal combustion engine; a pressure difference detecting means for detecting a pressure difference between pressures at two arbitrary points in the recirculation pipe from an exit of the recirculation valve to the intake air pipe or a pressure difference between pressures at two arbitrary points in the recirculation pipe from an inlet of the recirculation valve to an exhaust pipe; a first exhaust gas recirculation ratio calculating means for calculating a first exhaust gas recirculation ratio from the pressure difference and a detected value of the running condition detecting means; and a second exhaust gas recirculation ratio calculating means for calculating a second exhaust gas recirculation ratio corresponding with the detected value of the running condition detecting means; wherein a feed back control is performed in which the passage area of the recirculation valve is increased or decreased so that a difference between the first exhaust gas recirculation ratio and a second exhaust gas recirculation ratio is nullified.

摘要翻译： 一种废气再循环控制装置，其适于控制内燃机的废气的一部分再循环回发动机，所述废气再循环控制装置包括用于将内燃机的废气再循环回进气管的再循环管; 用于控制在再循环管中流动的废气的流量的再循环阀; 再循环阀通道区域控制装置，用于控制再循环阀的通道面积; 运行条件检测装置，用于检测内燃机的运行状态; 压力差检测装置，用于检测从再循环阀的出口到进气管的再循环管中的两个任意点处的压力差，或者从再循环管的入口处的再循环管的两个任意点处的压力差 再循环阀到排气管; 第一排气再循环比计算装置，用于根据压力差和运行状态检测装置的检测值计算第一废气再循环比; 以及第二废气再循环比率计算装置，用于根据运行状态检测装置的检测值计算第二排气再循环比; 其中进行反馈控制，其中再循环阀的通道面积增加或减小，使得第一废气再循环比和第二废气再循环比之间的差异被消除。

公开(公告)号：US06318152B1

公开(公告)日：2001-11-20

申请号：US09419111

申请日：1999-10-15

申请人： Keizo Hagihara ,  Tadahiro Azuma ,  Hirofumi Ohuchi

发明人： Keizo Hagihara ,  Tadahiro Azuma ,  Hirofumi Ohuchi

IPC分类号： G01M1500

CPC分类号： F02D41/06 ,  F02D19/0636 ,  F02D19/0649 ,  F02D35/021 ,  F02D41/0025 ,  F02D2200/0612 ,  Y02T10/36

摘要： To provide a fuel property judgement device for an internal combustion engine, in which, without increasing costs, fuel property is judged earlier and an optimum control suitable for the fuel property is carried out earlier whereby the predicted degradation of the controllability at the time of starting operation, caused by the difference in fuel property, immediately after the start and during a transient period may be prevented, there are provided a unit for detecting an initial combustion at the time of starting operation of the internal combustion engine, a unit for counting a turn-on number of a crank angle signal until the initial combustion is detected, a unit for setting a standard number, a unit for comparing the turn-on number with the standard number, and a unit for determining the fuel property on the basis of a comparison result.

摘要翻译： 为了提供一种用于内燃机的燃料特性判断装置，其中，在不增加成本的情况下，早期判断燃料性质，并且更早地执行适合于燃料特性的最佳控制，由此预测在启动时的可控制性的劣化 由于燃料特性的不同引起的操作，可以防止刚刚开始之后和过渡时期期间的燃料特性的差异，所以提供了一种用于检测内燃机起动时的初始燃烧的单元， 曲柄角信号的开启次数直到检测到初始燃烧为止，用于设定标准数量的单元，用于将接通数量与标准数量进行比较的单元，以及用于基于 比较结果。

公开(公告)号：US06283074B1

公开(公告)日：2001-09-04

申请号：US09432794

申请日：1999-11-03

申请人： Tatsuhiko Takahashi ,  Satoshi Wachi ,  Atsuko Hashimoto ,  Hirofumi Ohuchi

发明人： Tatsuhiko Takahashi ,  Satoshi Wachi ,  Atsuko Hashimoto ,  Hirofumi Ohuchi

IPC分类号： F02D1302

CPC分类号： F02D13/0219 ,  F02D13/0238 ,  F02D13/0261 ,  F02D2013/0292 ,  Y02T10/18

摘要： A valve timing control system for an internal combustion engine, comprising a required advance amount calculating section for calculating a required advance amount on the basis of operating condition of the engine, a valve timing control section for calculating a valve timing control variable on the basis of an obtained advance amount and the required advance amount calculated by the required advance amount calculating section, and a time period measuring section for measuring an elapsed time after the start of the engine. The required advance amount calculating section makes a calculation so that the required advance amount assumes a value smaller than that in an normal state until the time period measuring section measures a predetermined period of time. Hence, exhaust gas clarification immediately after the engine start, fuel consumption and drivability can be improved.

摘要翻译： 一种用于内燃机的气门正时控制系统，包括：用于根据发动机运行状态计算所需提前量的所需提前量计算部分，用于根据发动机运转状态计算气门正时控制变量的气门正时控制部分 获得的提前量和由所需提前量计算部计算出的所需提前量，以及用于测量发动机起动之后经过时间的时间段测量部。 所需的提前量计算部进行计算，使得所需的提前量假定比正常状态下的值小，直到时间段测量部测量预定时间段为止。 因此，可以提高发动机起动后的排气净化，燃料消耗和驾驶性能的提高。

公开(公告)号：US5560202A

公开(公告)日：1996-10-01

申请号：US467925

申请日：1995-06-06

申请人： Yasuhiko Hosoya ,  Hirofumi Ohuchi ,  Tatsuhiko Takahashi

发明人： Yasuhiko Hosoya ,  Hirofumi Ohuchi ,  Tatsuhiko Takahashi

IPC分类号： F01N3/20 ,  F01N3/22 ,  F01N3/30 ,  F01N13/02 ,  F02D41/02 ,  F02P5/04 ,  F02P5/15 ,  F01N3/28

CPC分类号： F01N3/222 ,  F01N13/009 ,  F01N3/2006 ,  F01N3/22 ,  F01N3/306 ,  F02D41/024 ,  F02P5/045 ,  F02P5/1506 ,  F02P5/1512 ,  Y02T10/26 ,  Y02T10/46

摘要： Exhaust gas cleaner system for an automotive internal combustion engine includes an air introduction pipe 8 for introducing secondary air, heated initially by a heater 23, to the catalytic converter unit 7 mounted on the exhaust pipe 3. The ignition timings of the engine is retarded at least during the time when the secondary air is heated by the heater 23. Preferably, the number of ignition timings are counted by a counter modulo 5, for example, in the case of a four-cylinder engine, and the ignition timings are retarded when the counter content is 3 or 4, such that the ignition timings of the cylinders are retarded intermittently. Alternatively, the retardation of the ignition timings may be terminated before the introduction of the heated secondary air is terminated.Where two first and second catalytic converter units 7a and 7b are provided, secondary air distributed by a change-over valve 10a is heated separately by heaters 23b and 23c.To reduce the burden imposed on the engine, the generation of power by the AC generator 28 may be suspended when either the flow control valve 10b or the heater 23 is operated.

公开(公告)号：US5459999A

公开(公告)日：1995-10-24

申请号：US269681

申请日：1994-07-01

申请人： Yasuhiko Hosoya ,  Hirofumi Ohuchi ,  Tatsuhiko Takahashi

发明人： Yasuhiko Hosoya ,  Hirofumi Ohuchi ,  Tatsuhiko Takahashi

IPC分类号： F01N3/20 ,  F01N3/22 ,  F01N3/30 ,  F01N13/02 ,  F02D41/02 ,  F02P5/04 ,  F02P5/15

CPC分类号： F01N3/222 ,  F01N13/009 ,  F01N3/2006 ,  F01N3/22 ,  F01N3/306 ,  F02D41/024 ,  F02P5/045 ,  F02P5/1506 ,  F02P5/1512 ,  Y02T10/26 ,  Y02T10/46

摘要： Exhaust gas cleaner system for an automotive internal combustion engine includes an air introduction pipe 8 for introducing secondary air, heated initially by a heater 23, to the catalytic converter unit 7 mounted on the exhaust pipe 3. The ignition timings of the engine is retarded at least during the time when the secondary air is heated by the heater 23. Preferably, the number of ignition timings are counted by a counter modulo 5, for example, in the case of a four-cylinder engine, and the ignition timings are retarded when the counter content is 3 or 4, such that the ignition timings of the cylinders are retarded intermittently. Alternatively, the retardation of the ignition timings may be terminated before the introduction of the heated secondary air is terminated.Where two first and second catalytic converter units 7a and 7b are provided, secondary air distributed by a change-over valve 10a is heated separately by heaters 23b and 23c.To reduce the burden imposed on the engine, the generation of power by the AC generator 28 may be suspended when either the flow control valve 10b or the heater 23 is operated.

摘要翻译： 用于汽车内燃机的废气净化器系统包括用于将初始由加热器23加热的二次空气引入到安装在排气管3上的催化转化器单元7的空气引入管8。发动机的点火正时延迟 最少在二次空气被加热器23加热的时间内。优选地，例如在四缸发动机的情况下，以5为计数器对点火正时数进行计数，并且当点火正时被延迟时 计数器内容为3或4，使得气缸的点火正时间歇地延迟。 或者，可以在终止加热的二次空气的引入之前终止点火正时的延迟。 在提供两个第一和第二催化转化器单元7a和7b的情况下，由转换阀10a分配的二次空气由加热器23b和23c单独加热。 为了减轻对发动机的负担，当流量控制阀10b或加热器23工作时，交流发电机28产生的动力可能被暂停。