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。

公开(公告)号：US5732550A

公开(公告)日：1998-03-31

申请号：US674693

申请日：1996-07-02

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

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

IPC分类号： F01N3/20 ,  F01N9/00 ,  F02D41/02 ,  F02D41/14 ,  F01N3/18

CPC分类号： F01N9/00 ,  F01N3/2013 ,  F02D41/0255 ,  F02D41/1446 ,  Y02T10/26 ,  Y02T10/47

摘要： A current control system of an electrically heated catalytic converter installed in the exhaust system of an internal combustion engine. In the engine, fuel metering is controlled by correcting a basic quantity of fuel injection by correction factors. The correction factors are grouped into the factors for increasing the fuel injection quantity at engine warmup and other factors. Therefore, the total value of the factors for increasing the fuel injection quantity at engine warmup are compared with a predetermined value, and if the total value exceeds the predetermined value, the current supply to the heater is inhibited. Alternatively, the cranking time is compared with a predetermined value and if it exceeds the predetermined value, the current supply is inhibited. Since the quantity of fuel injection is increased in these situations, unburned emissions will accordingly be increase. With the arrangement, the exhaust temperature is prevented from rising excessively and the catalytic converter is prevented from being degraded or damaged.

摘要翻译： 一种安装在内燃机的排气系统中的电加热催化转化器的电流控制系统。 在发动机中，通过校正因子校正基本燃料喷射量来控制燃料计量。 校正因子分为增加发动机预热时燃油喷射量等因素。 因此，将发动机预热时的燃料喷射量增加的因素的总量与预定值进行比较，如果总值超过预定值，则禁止向加热器供电。 或者，将启动时间与预定值进行比较，并且如果超过预定值，则禁止电流供应。 由于在这些情况下燃料喷射量增加，因此未燃烧排放量将会增加。 通过这种布置，防止排气温度过度上升，并且防止催化转化器劣化或损坏。

公开(公告)号：US5784878A

公开(公告)日：1998-07-28

申请号：US674692

申请日：1996-07-02

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

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

IPC分类号： F02D45/00 ,  F01N3/20 ,  F01N3/22 ,  F02D41/02 ,  F02D41/08 ,  F01N3/30

CPC分类号： F02D41/083 ,  F01N3/2013 ,  F02D41/024 ,  F01N3/22 ,  Y02T10/26

摘要： A system for controlling an idle speed of an internal combustion engine having an electrically heated catalytic converter which is heated up when current is supplied from an alternator driven by the engine. In the engine idle control, a basic value of a desired idle engine speed is determined with respect to the engine coolant temperature in the same manner as the prior art. However, an augmentative correction amount of the desired idle engine speed is determined with respect to the exhaust system ambient temperature. More specifically, the desired idle engine speed is increased in response to the heating of the catalytic converter so as to prevent the alternator from generating electric power insufficient for heating up the catalytic converter.

摘要翻译： 一种用于控制具有电加热催化转化器的内燃机的空转速度的系统，其在从由发动机驱动的交流发电机供电时被加热。 在发动机怠速控制中，以与现有技术相同的方式，相对于发动机冷却剂温度确定期望的怠速发动机转速的基本值。 然而，相对于排气系统环境温度确定期望的怠速发动机转速的增强校正量。 更具体地，响应于催化转化器的加热，期望的怠速发动机速度增加，以便防止交流发电机产生不足以加热催化转化器的电力。

公开(公告)号：US5791140A

公开(公告)日：1998-08-11

申请号：US634507

申请日：1996-04-18

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

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

IPC分类号： F01N3/20 ,  F01N3/24 ,  F01N9/00

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

摘要： An exhaust gas-purifying system for an internal combustion engine includes an alternator driven by the engine. A regulator controls voltage generated by the alternator. An electrically-heated catalyzer is arranged in the exhaust system of the engine and connected to the alternator to be electrically heated by electric power generated by the alternator. An ECU controls the regulator to control the voltage generated by the alternator and supplied to the electrically-heated catalyzer, according to operating conditions of the engine detected by sensors such as an engine coolant temperature sensor and an intake air temperature sensor.

摘要翻译： 用于内燃机的废气净化系统包括由发动机驱动的交流发电机。 调节器控制交流发电机产生的电压。 电加热催化器布置在发动机的排气系统中并且连接到交流发电机，以由交流发电机产生的电力进行电加热。 ECU根据由诸如发动机冷却剂温度传感器和进气温度传感器的传感器检测到的发动机的操作条件控制调节器来控制由交流发电机产生的电压并提供给电加热催化器。

公开(公告)号：US5740675A

公开(公告)日：1998-04-21

申请号：US663782

申请日：1996-06-14

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

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

IPC分类号： F02D45/00 ,  F01N3/20 ,  F01N3/22 ,  F01N3/24 ,  F01N3/32 ,  F01N7/00 ,  F02D41/14 ,  F01N3/28

CPC分类号： F01N9/00 ,  F01N13/0097 ,  F01N3/2013 ,  F01N3/22 ,  F01N3/222 ,  F02D41/1441 ,  F02D41/1494 ,  F01N2550/02 ,  F01N2560/20 ,  F01N3/32 ,  Y02T10/26 ,  Y02T10/47

摘要： A system for detecting the ambient temperature of an exhaust system of an internal combustion engine, where an oxygen sensor (O.sub.2 sensor) is installed for detecting oxygen content in exhaust gases generated by the engine. The oxygen sensor has a detection element and a heater for heating the detection element when supplied with current. The exhaust system is further provided with a catalytic converter which similarly has a heater for heating the catalyst for promoting the activation thereof. The electric resistance of the sensor heater is detected and based on the detected resistance, the ambient temperature of the exhaust system is detected or estimated in accordance with characteristics preestablished with respect to the electric resistance of the heater. With the arrangement, it becomes possible to detect the ambient temperature of the exhaust system without using a temperature sensor. The detected ambient temperature is used for controlling the current supply to the heater of the catalytic converter.

摘要翻译： 一种用于检测内燃机的排气系统的环境温度的系统，其中安装有氧传感器（O2传感器），用于检测由发动机产生的废气中的氧含量。 氧传感器具有检测元件和加热器，用于当被供应电流时加热检测元件。 排气系统还设置有催化转化器，其类似地具有用于加热催化剂以促进其活化的加热器。 检测传感器加热器的电阻，根据检测到的电阻，根据加热器的电阻预先确定的特性来检测或估计排气系统的环境温度。 通过这种布置，可以在不使用温度传感器的情况下检测排气系统的环境温度。 检测到的环境温度用于控制向催化转化器加热器的电流供应。

公开(公告)号：US5806307A

公开(公告)日：1998-09-15

申请号：US698108

申请日：1996-08-15

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

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

IPC分类号： F02B77/08 ,  F01N3/20 ,  F01N3/24 ,  F02D29/06 ,  H02J9/02 ,  F01N3/28

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。

公开(公告)号：US5758492A

公开(公告)日：1998-06-02

申请号：US677314

申请日：1996-07-02

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

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

IPC分类号： F02D45/00 ,  F01N3/20 ,  F01N11/00 ,  F01N3/28 ,  F01N9/00

CPC分类号： F01N3/2013 ,  F01N11/00 ,  F01N2550/02 ,  F01N2550/22 ,  Y02T10/26 ,  Y02T10/47

摘要： A system for detecting a failure of an electrically heated catalytic converter installed in an exhaust system of the engine for reducing pollutants from exhaust gases emitted from the engine, the catalytic converter having a heater which is connected with the power source to be supplied with current. A parameter such as electric power consumption indicative of an electric resistance of the heater of the catalytic converter. If the parameter is out of a range defined by reference values, it is determined hat a failure has occurred in the heater of the catalytic converter. In the system, reference values at a specific condition based on a correction coefficient obtained on the ratio between the parameter designed before manufacturing and that measured after manufacturing.

摘要翻译： 一种用于检测安装在发动机的排气系统中的电加热催化转化器的故障的系统，用于减少从发动机排放的废气中的污染物，所述催化转化器具有与供给电流的电源连接的加热器。 诸如表示催化转化器的加热器的电阻的功率消耗的参数。 如果参数超出由参考值定义的范围，则确定催化转化器的加热器发生故障。 在系统中，基于根据制造前设计的参数与制造后测量的参数之间的比率获得的校正系数，在特定条件下的参考值。

公开(公告)号：US5689952A

公开(公告)日：1997-11-25

申请号：US634466

申请日：1996-04-18

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

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

IPC分类号： F01N3/20 ,  H02J7/14 ,  F01N9/00

CPC分类号： F01N3/2013 ,  H02J7/1438 ,  Y02T10/26

摘要： An exhaust gas-purifying system for an internal combustion engine includes an alternator driven by the engine. A regulator controls voltage generated by the alternator. An electrically-heated catalyzer is arranged in the exhaust system of the engine and connected to the alternator to be electrically heated by electric power generated by the alternator. An ECU controls the regulator to control the voltage generated by the alternator and supplied to the electrically-heated catalyzer, according to a degree of aging of the electrically-heated catalyzer.

摘要翻译： 用于内燃机的废气净化系统包括由发动机驱动的交流发电机。 调节器控制交流发电机产生的电压。 电加热催化器布置在发动机的排气系统中并且连接到交流发电机，以由交流发电机产生的电力进行电加热。 ECU根据电加热催化器的老化程度控制调节器，以控制交流发电机产生的电压并提供给电加热催化器。

公开(公告)号：US5857325A

公开(公告)日：1999-01-12

申请号：US697499

申请日：1996-08-26

申请人： Yuichi Shimasaki ,  Hiroaki Kato ,  Akihisa Saito ,  Tetsu Teshirogi ,  Hideo Furumoto ,  Takuya Aoki

发明人： Yuichi Shimasaki ,  Hiroaki Kato ,  Akihisa Saito ,  Tetsu Teshirogi ,  Hideo Furumoto ,  Takuya Aoki

IPC分类号： G01M15/04 ,  F01N3/20 ,  F01N3/32 ,  F01N11/00 ,  F02B77/08 ,  F02D45/00 ,  F01N3/30 ,  H05B1/02

CPC分类号： F01N3/2013 ,  F01N11/00 ,  F01N2550/22 ,  Y02T10/26 ,  Y02T10/47

摘要： An electrical load abnormality-detecting system for an automotive vehicle detects abnormality of each of a plurality of electrical load devices installed on the vehicle. A current sensor is provided commonly for the plurality of electrical load devices, for detecting a total load current flowing through the plurality of electrical load devices. The plurality of electrical load devices are separately put into operation, and abnormality of each of the plurality of electrical load devices is determined based on the total load current detected by the current sensor.

摘要翻译： 用于机动车辆的电气负载异常检测系统检测安装在车辆上的多个电气负载装置中的每一个的异常。 通常为多个电负载装置提供电流传感器，用于检测流过多个电负载装置的总负载电流。 多个电气负载装置分别投入运行，并且基于由电流传感器检测的总负载电流来确定多个电负载装置中的每一个的异常。

公开(公告)号：US6031213A

公开(公告)日：2000-02-29

申请号：US567326

申请日：1995-12-05

申请人： Shigeharu Hashimoto ,  Tadato Ito ,  Yuichi Shimasaki ,  Hiroaki Kato ,  Takashi Komatsuda ,  Akihisa Saito ,  Takuya Aoki ,  Tetsu Teshirogi

发明人： Shigeharu Hashimoto ,  Tadato Ito ,  Yuichi Shimasaki ,  Hiroaki Kato ,  Takashi Komatsuda ,  Akihisa Saito ,  Takuya Aoki ,  Tetsu Teshirogi

IPC分类号： H05K7/00 ,  F01N3/20 ,  F01N13/02 ,  H05B3/08 ,  F01N3/10

CPC分类号： F01N3/2026 ,  F01N13/009 ,  H05B3/08 ,  Y02T10/26

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。