公开(公告)号：US5819531A

公开(公告)日：1998-10-13

申请号：US803444

申请日：1997-02-20

申请人： Hiroaki Kato ,  Yuichi Shimasaki ,  Hironao Fukuchi ,  Akihisa Saito ,  Hideo Furumoto ,  Takayoshi Nakayama

发明人： Hiroaki Kato ,  Yuichi Shimasaki ,  Hironao Fukuchi ,  Akihisa Saito ,  Hideo Furumoto ,  Takayoshi Nakayama

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

CPC分类号： F01N3/2013 ,  F01N11/00 ,  F01N9/00 ,  F01N2550/02 ,  F01N2550/22 ,  Y02T10/26 ,  Y02T10/47

摘要： A control device is provided for controlling an electrically-heated catalyzer of an internal combustion engine. Electric power generated by an alternator driven by the engine is supplied to the electrically-heated catalyzer. At least one electrical parameter dependent on the electric power supplied to the electrically-heated catalyzer is detected. It is determined that the electrically-heated catalyzer is abnormal when the at least one electrical parameter falls outside a predetermined range. The predetermined range is changed according to the rotational speed of the engine detected by an engine rotational speed sensor.

摘要翻译： 提供一种用于控制内燃机的电加热催化剂的控制装置。 由发动机驱动的交流发电机产生的电力被供给到电加热催化剂。 检测到依赖于供给电加热催化剂的电力的至少一个电参数。 当至少一个电参数落在预定范围之外时，确定电加热催化剂是异常的。 根据由发动机转速传感器检测到的发动机的转速来改变预定范围。

公开(公告)号：US5908019A

公开(公告)日：1999-06-01

申请号：US803720

申请日：1997-02-21

申请人： Hironao Fukuchi ,  Yuichi Shimasaki ,  Hiroaki Kato ,  Akihisa Saito ,  Hideo Furumoto ,  Takayoshi Nakayama

发明人： Hironao Fukuchi ,  Yuichi Shimasaki ,  Hiroaki Kato ,  Akihisa Saito ,  Hideo Furumoto ,  Takayoshi Nakayama

IPC分类号： F01N3/20 ,  F01N3/22 ,  F02D29/06 ,  F02D31/00 ,  F02D35/00 ,  F02D41/06 ,  F02D41/08 ,  F02D43/00 ,  F02N99/00 ,  F02D41/16

CPC分类号： F02D35/0038 ,  F01N3/2013 ,  F02D31/005 ,  F02D41/083 ,  F01N3/22 ,  F02D2200/0414 ,  F02D2200/703 ,  Y02T10/26 ,  Y02T10/42

摘要： An intake air amount control system for an internal combustion engine installed in an automotive vehicle has an intake air amount control valve arranged in a bypass passage bypassing a throttle valve arranged in an intake passage of the engine. The intake air amount control valve controls the amount of air supplied to the intake passage at a location downstream of the throttle valve. The intake air amount control valve is controlled in dependence on operatives states of electric devices including an electrically-heated catalyzer which are installed on the vehicle and supplied with electric power by an alternator installed on the vehicle and driven by the engine, when the engine is in a predetermined operating condition. The intake air amount control valve is controlled by the use of a correction amount dependent on an operative state of the electrically-heated catalyzer.

摘要翻译： 安装在机动车辆中的用于内燃机的进气量控制系统具有配置在配置在发动机的进气通路内的节流阀旁路旁路的进气量控制阀。 进气量控制阀控制在节流阀下游位置供给到进气通道的空气量。 进气量控制阀根据包括电加热催化器的电气装置的操作状态进行控制，该电气装置安装在车辆上，并且当发动机为发动机时由安装在车辆上并由发动机驱动的交流发电机提供电力 在预定的操作条件下。 通过使用取决于电加热催化剂的操作状态的校正量来控制进气量控制阀。

公开(公告)号：US5818119A

公开(公告)日：1998-10-06

申请号：US802347

申请日：1997-02-11

申请人： Hironao Fukuchi ,  Yuichi Shimasaki ,  Hiroaki Kato ,  Akihisa Saito ,  Hideo Furumoto ,  Takayoshi Nakayama

发明人： Hironao Fukuchi ,  Yuichi Shimasaki ,  Hiroaki Kato ,  Akihisa Saito ,  Hideo Furumoto ,  Takayoshi Nakayama

IPC分类号： F01N3/20 ,  F01N9/00 ,  H02J7/14 ,  H02J7/16 ,  H02J7/24 ,  H02P9/00 ,  H02P9/04 ,  F01N3/10

CPC分类号： F01N9/00 ,  F01N3/2013 ,  H02J7/1438 ,  F01N2900/0422 ,  Y02T10/26 ,  Y02T10/47

摘要： A control system controls an alternator driven by an internal combustion engine, for generating electric power. A changeover switch selectively switches the destination of electric power generated by the alternator to a plurality of electric load groups having respective different load voltage values, each electric load group having at least one electric load. An ECU controls switching operation of the changeover switch and changes output voltage from the alternator between a plurality of different predetermined voltage values corresponding, respectively, to the plurality of electric load groups, according to a direction in which the changeover switch has been switched. When switching of the changeover switch has occurred, the output voltage from the alternator to be supplied to one of the plurality of electric load groups to which the destination of electric power generated by the alternator has been switched is controlled by the ECU in a manner such that the output voltage progressively changes to one of the plurality of different predetermined voltage values corresponding to the one of the plurality of electric load groups.

摘要翻译： 控制系统控制由内燃机驱动的用于产生电力的交流发电机。 切换开关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各自不同的负载电压值的多个电负载组，每个电负载组具有至少一个电负载。 ECU控制切换开关的切换操作，并且根据切换开关的切换方向，将交流发电机的输出电压分别对应于多个电负载组的多个不同的预定电压值。 当切换开关发生时，来自交流发电机的输出电压被提供给交流发电机产生的电力目的地已经切换到的多个电力负载组中的一个电负载组中的一个由ECU以这样的方式由ECU控制 输出电压逐渐变化为与多个电负载组中的一个相对应的多个不同的预定电压值之一。

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：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：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：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：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：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。