利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

230 条记录 (耗时 0.03 秒)

    Failure detection system of exhaust secondary air supply system of internal combustion engine
    1.
    发明授权
    Failure detection system of exhaust secondary air supply system of internal combustion engine 失效
    内燃机排气二次供气系统故障检测系统

    公开(公告)号：US5852929A

    公开(公告)日：1998-12-29

    申请号：US677315

    申请日：1996-07-02

    申请人： Hiroaki Kato ,  Yuichi Shimasaki ,  Takashi Komatsuda ,  Takuya Aoki ,  Hiroaki Muramatsu ,  Hajime Uto ,  Toshiaki Ichitani

    发明人： Hiroaki Kato ,  Yuichi Shimasaki ,  Takashi Komatsuda ,  Takuya Aoki ,  Hiroaki Muramatsu ,  Hajime Uto ,  Toshiaki Ichitani

    IPC分类号： F01N3/22 ,  F01N3/32 ,  F01N11/00 ,  F01N13/02 ,  F02B77/08 ,  F02D41/14 ,  F02D41/22 ,  F01N3/20

    CPC分类号： F02D41/221 ,  F01N11/00 ,  F01N13/0097 ,  F01N3/32 ,  F02B77/08 ,  F01N2550/14 ,  Y02T10/20 ,  Y02T10/47

    摘要： A failure detection system detects a failure occurring in an exhaust secondary air supply system of an internal combustion engine, and has a catalytic converter installed in an exhaust pipe of an exhaust system of the engine for reducing pollutants from exhaust gases emitted from the engine, a conduit connected, at one end, to the exhaust pipe at a location upstream of the catalytic converter and an air pump connected to an opposite end of the conduit for supplying compressed air in the conduit. The conduit is closed by the a valve which opens in response to the negative pressure and a second valve which opens in response to the conduit pressure. In the system a first prescribed level and the second prescribed level are set and two pressure switches are provided for generating output at the levels. A failure occurring in the air pump and the valve is detected based on operation of the air pump and the output of the pressure detectors. Alternatively, the failure is detected by changing the timing of the termination of the air pump and closing of the second valve while using one switch and the second prescribed level. The system is simple in configuration.

    摘要翻译： 故障检测系统检测在内燃机的排气二次空气供给系统中发生的故障，并且具有安装在发动机的排气系统的排气管中的催化转化器，用于减少从发动机排出的废气中的污染物， 导管在一端连接到催化转化器上游位置处的排气管，以及连接到导管的相对端的空气泵，用于在管道中供应压缩空气。 导管由响应于负压而打开的阀闭合，并且响应于导管压力而打开的第二阀闭合。 在系统中，设定第一规定级别和第二规定级别，并且提供两个压力开关用于在电平上产生输出。 基于气泵的操作和压力检测器的输出，检测出气泵和阀门发生的故障。 或者，通过在使用一个开关和第二规定水平时改变气泵的终止和第二阀的闭合的定时来检测故障。 该系统配置简单。

    Failure detection system of exhaust secondary air supply system of internal combustion engine
    2.
    发明授权
    Failure detection system of exhaust secondary air supply system of internal combustion engine 失效
    内燃机排气二次供气系统故障检测系统

    公开(公告)号：US5782086A

    公开(公告)日：1998-07-21

    申请号：US674691

    申请日：1996-07-02

    申请人： Hiroaki Kato ,  Yuichi Shimasaki ,  Takashi Komatsuda ,  Akihisa Saito ,  Tetsu Teshirogi ,  Takuya Aoki ,  Hideo Furumoto ,  Hiroaki Muramatsu ,  Takayoshi Nakayama

    发明人： Hiroaki Kato ,  Yuichi Shimasaki ,  Takashi Komatsuda ,  Akihisa Saito ,  Tetsu Teshirogi ,  Takuya Aoki ,  Hideo Furumoto ,  Hiroaki Muramatsu ,  Takayoshi Nakayama

    IPC分类号： F01N3/22 ,  F01N11/00 ,  F02D41/14 ,  F02D41/22 ,  F01N3/20 ,  F01N3/30

    CPC分类号： F02D41/1475 ,  F01N11/00 ,  F02D41/221 ,  F01N2550/14 ,  Y02T10/47

    摘要： A system and method for detecting a failure occurring in an exhaust secondary air supply system of an internal combustion engine. A conduit is connected to the exhaust pipe to supply secondary air to the exhaust pipe to promote oxidization of the emissions in the exhaust gases. A valve is provided in the conduit for opening/closing it. The failure of the valve is detected by operating the air pump to supply the air in the conduit, while closing the conduit by the valve. The air/fuel ratio is detected by an oxygen sensor installed downstream of the conduit to be compared with a desired air/fuel ratio. If the detected air/fuel ratio is leaner than a desired air/fuel ratio, the air flows to the exhaust pipe so that the valve is considered to be stuck to open. Alternatively, a pump current is detected and is compared with a reference value indicative of the current at no air flow. If the detected current is less than the reference value, the valve is considered to be in failure. Moreover, the movement of a valve member is sensed to detect whether the valve is stuck to close.

    摘要翻译： 一种用于检测在内燃机的排气二次空气供给系统中发生的故障的系统和方法。 导管连接到排气管，以向排气管提供二次空气以促进废气中的排放物的氧化。 管道中设有阀门，用于打开/关闭阀门。 通过操作气泵来检测阀门的故障，以便通过阀门关闭导管时在管道中供应空气。 空气/燃料比由安装在管道下游的氧传感器检测，以与期望的空气/燃料比进行比较。 如果检测到的空气/燃料比比期望的空气/燃料比更稀，则空气流向排气管，从而认为该阀被打开。 或者，检测泵电流并将其与表示无气流的电流的参考值进行比较。 如果检测到的电流小于参考值，则认为阀门处于故障状态。 此外，检测阀构件的移动以检测阀是否被卡住以关闭。

    Control system for electrically heated catalyst of internal combustion engine
    6.
    发明授权
    Control system for electrically heated catalyst of internal combustion engine 失效
    内燃机电加热催化剂控制系统

    公开(公告)号：US5555725A

    公开(公告)日：1996-09-17

    申请号：US503340

    申请日：1995-07-17

    申请人： Yuichi Shimasaki ,  Takashi Komatsuda ,  Hiroaki Kato ,  Takuya Aoki

    发明人： Yuichi Shimasaki ,  Takashi Komatsuda ,  Hiroaki Kato ,  Takuya Aoki

    IPC分类号： F02B77/08 ,  F01N3/20 ,  F01N3/24 ,  F01N9/00 ,  F01N11/00 ,  F01N3/28

    CPC分类号： F01N11/00 ,  F01N3/2013 ,  F01N9/00 ,  F01N2550/02 ,  Y02T10/26 ,  Y02T10/47

    摘要： A control system controls an electrically heated catalyst for purifying exhaust gases emitted from an internal combustion engine. Voltage applied to the electrically heated catalyst and electric current flowing through the same are detected. A changeover is made between supply and interrupt of power to the electrically heated catalyst. A parameter indicative of an operative state of the electrically heated catalyst is calculated based on the detected voltage and the detected current, and the operative state of the electrically heated catalyst is detected based on the parameter. The changeover between the supply and interrupt of power to the electrically heated catalyst is controlled based the operative state of the electrically heated catalyst thus detected.

    摘要翻译： 控制系统控制用于净化从内燃机排出的废气的电加热催化剂。 检测施加到电加热的催化剂的电压和流过其的电流。 在电加热催化剂的供电和中断之间进行切换。 基于检测到的电压和检测电流计算表示电加热催化剂的操作状态的参数，并且基于该参数检测电加热催化剂的操作状态。 基于所检测的电加热催化剂的操作状态来控制电加热催化剂的供电和中断切换。

    Catalyst activating system in multi-cylinder internal combustion engine
    9.
    发明授权
    Catalyst activating system in multi-cylinder internal combustion engine 失效
    多气缸内燃机催化剂活化系统

    公开(公告)号：US5531203A

    公开(公告)日：1996-07-02

    申请号：US377736

    申请日：1995-01-25

    申请人： Takashi Komatsuda ,  Hiroaki Kato ,  Yuichi Shimasaki ,  Akihisa Saito ,  Toshikazu Oketani ,  Takuya Aoki

    发明人： Takashi Komatsuda ,  Hiroaki Kato ,  Yuichi Shimasaki ,  Akihisa Saito ,  Toshikazu Oketani ,  Takuya Aoki

    IPC分类号： F01L13/00 ,  F01L1/26 ,  F01N3/18 ,  F01N3/20 ,  F01N3/30 ,  F02D13/02 ,  F02D17/02 ,  F02D41/00 ,  F02D41/02 ,  F02D41/06 ,  F02D41/36 ,  F02D45/00 ,  F02D7/00

    CPC分类号： F02D41/025 ,  F01L1/267 ,  F01N3/2006 ,  F02D41/0087 ,  F01N2430/02 ,  F01N3/30 ,  Y02T10/26

    摘要： In a multi-cylinder internal combustion engine including a plurality of fuel injection valves corresponding to a plurality of cylinders, respectively, and a catalytic converter provided in an exhaust system common to the cylinders, the concentration of oxygen in the exhaust gas from the engine is precisely controlled in accordance with the operational condition of the engine in a low-temperature state of the engine for the prompt activation of the catalyst. When the engine is at a low temperature, the operation of the fuel injection valves is controlled so as to stop the supplying of a fuel into the particular cylinders and, the operation of a valve operating characteristic changing means is controlled to adjust the amounts of air drawn and discharged on the basis of conditions detected by operational condition detecting means and at such low temperature to thereby control the oxygen supplied to the catalyst in the catalytic converter whereby the activity of the catalyst can be controlled.

    摘要翻译： 在包括分别对应于多个气缸的多个燃料喷射阀的多气缸内燃机和设置在与气缸共用的排气系统中的催化转化器中，来自发动机的废气中的氧浓度为 在发动机的低温状态下，根据发动机的运转状况进行精确控制，以迅速激活催化剂。 当发动机处于低温时，控制燃料喷射阀的操作，以便停止向特定气缸中供应燃料，并且控制阀操作特性改变装置的操作以调节空气量 基于由操作条件检测装置检测的条件并在这样低的温度下拉出和排出，从而控制供给催化转化器中的催化剂的氧气，从而可以控制催化剂的活性。