Exhaust gas-purifying system for internal combustion engines
    2.
    发明授权
    Exhaust gas-purifying system for internal combustion engines 失效
    内燃机排气净化系统

    公开(公告)号:US5806307A

    公开(公告)日:1998-09-15

    申请号:US698108

    申请日:1996-08-15

    CPC分类号: H02J9/02 F01N3/2013 Y02T10/26

    摘要: An exhaust gas-purifying system is provided for an internal combustion engine for use in a vehicle having an alternator driven by the engine to generate electric power. An electrically-heated catalyzer is arranged in the exhaust system of the engine and connected to the alternator to be electrically heated thereby. A changeover switch is provided for selectively switching the destination of electric power generated by the alternator to the electrically-heated catalyzer and to the electrical equipment. An ECU controls the electric power generated by the alternator, depending upon a direction in which the changeover switch has been switched. The ECU detects abnormality of the changeover switch, and when the abnormality is detected, the electric power generated by the alternator is changed to a value smaller than a value assumed when the changeover switch is normal.

    摘要翻译: 本发明提供一种用于内燃机的排气净化系统,该内燃机用于具有由发动机驱动的交流发电机以产生电力的车辆。 发动机的排气系统中布置有电加热催化剂,并连接到交流发电机,从而被电加热。 提供转换开关,用于选择性地将由交流发电机产生的电力的目的地切换到电加热催化器和电气设备。 ECU根据切换开关的方向控制交流发电机产生的电力。 ECU检测到切换开关的异常,并且当检测到异常时,由交流发电机产生的电力变为小于当切换开关正常时假设的值。

    Alternator control system
    3.
    发明授权
    Alternator control system 失效
    发电机控制系统

    公开(公告)号:US5754032A

    公开(公告)日:1998-05-19

    申请号:US736659

    申请日:1996-10-25

    CPC分类号: H02J7/1438

    摘要: A control system for controlling an alternator driven by an engine, for generating electric power, has a changeover switch for selectively switching destination of electric power generated by the alternator to a plurality of electric loads having respective different load voltage values. An ECU controls switching operation of the changeover switch and controls the alternator electric power, according to a direction in which the changeover switch has been switched. The ECU detects voltage of the alternator electric power when the destination of the alternator electric power is to be switched from a first electric load having a higher load voltage value of the plurality of electric loads to a second electric load having a lower load voltage value of the same, and causes the changeover switch to switch the destination of the alternator electric power from the first electric load to the second electric load after it is determined that the voltage of the alternator electric power has been changed from a predetermined higher voltage value to a predetermined lower voltage value.

    摘要翻译: 用于控制由发动机驱动的用于发电的交流发电机的控制系统具有切换开关,用于选择性地将由交流发电机产生的电力的目的地切换到具有不同负载电压值的多个电负载。 ECU根据切换开关的切换方向,控制切换开关的切换动作,控制交流发电机的电力。 当将交流发电机的目的地从具有多个电负载的较高负载电压值的第一电负载切换到具有较低负载电压值的第二电负载时,ECU检测交流发电机电力的电压 并且在确定交流发电机的电压已经从预定的更高的电压值变为一个预定的较高的电压值之后,使得切换开关将交流发电机的电力的目的地从第一电力负载切换到第二电力负载 预定的较低电压值。

    Catalyst activating system in multi-cylinder internal combustion engine
    5.
    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

    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。

    Failure detection system of exhaust secondary air supply system of
internal combustion engine
    8.
    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

    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。

    Electrode structure and electric heater comprising the same
    10.
    发明授权
    Electrode structure and electric heater comprising the same 失效
    电极结构和包括其的电加热器

    公开(公告)号:US6031213A

    公开(公告)日:2000-02-29

    申请号:US567326

    申请日:1995-12-05

    摘要: An electrode structure includes: a metallic electrode; a case for accommodating and holding the electrode, and one end of a lead wire connecting to the electrode; and an insulating member interposed between the electrode and the case in order to ensure insulation between the electrode and the case, in which structure a waterproof member is interposed between the case and the lead wire in order to prevent the incoming of water from between the case and the lead wire, and an electric heater havinging the above electrode structure. An electrode structure of an electric heater, includes: a first electrode; a second electrode of a cylinder shape, having a base portion connected with the first electrode and a top end portion connected with a lead wire; an insulating member having a thermal resistance, pierced by the second electrode; an elastic insulator having a thermal resistance, covering at least a portion of the second electrode; a case for accommodating and holding the second electrode, having a predetermined length L; and a rubber sealing member attached to the top end of the case. The electrode structure is preferably used by connecting to a conductive substance accommodated in a metallic housing, to apply electricity to the conductive substance. The conductive substance is preferably a metallic honeycomb structure. The given length L mentioned above is preferably L.gtoreq.40 mm.

    摘要翻译: 电极结构包括:金属电极; 用于容纳和保持电极的壳体,以及连接到电极的引线的一端; 以及插入在电极和壳体之间的绝缘构件,以便确保电极和壳体之间的绝缘,其中防水构件插入在壳体和引线之间的结构中,以防止水从壳体之间进入 和引线,以及具有上述电极结构的电加热器。 电加热器的电极结构包括:第一电极; 圆柱形的第二电极,具有与第一电极连接的基部和与导线连接的顶端部; 具有由第二电极刺穿的热阻的绝缘构件; 具有热阻的弹性绝缘体,其覆盖所述第二电极的至少一部分; 用于容纳和保持具有预定长度L的第二电极的壳体; 以及附接到壳体的顶端的橡胶密封构件。 电极结构优选通过连接到容纳在金属壳体中的导电物质来使用,以向导电物质施加电力。 导电性物质优选为金属蜂窝结构体。 上述给定长度L优选为L≥0.4mm。