Failure detection system of exhaust secondary air supply system of
internal combustion engine
    26.
    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

    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。

    Control system for electrically heated catalyst of internal combustion
engine
    27.
    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

    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。

    Alternator control system
    28.
    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。

    Secondary air pump control system for internal combustion engines
    29.
    发明授权
    Secondary air pump control system for internal combustion engines 失效
    内燃机二次空气泵控制系统

    公开(公告)号:US5615552A

    公开(公告)日:1997-04-01

    申请号:US510169

    申请日:1995-08-02

    摘要: A secondary air pump control system for an internal combustion engine having an air pump for supplying secondary air to the exhaust passage, comprises a voltage detector for detecting voltage applied to the air pump, a current detector for detecting current flowing through the air pump, and a switch for making a changeover between supply of electric power to the air pump and cutoff of same. The flow rate of secondary air supplied by the air pump is detected based on an output from the voltage detector and an output from the current detector. The operation of the switch is controlled based on the flow rate thus detected.

    摘要翻译: 一种用于内燃机的二次空气泵控制系统,其具有用于向排气通道供应二次空气的空气泵,包括用于检测施加到空气泵的电压的电压检测器,用于检测流过空气泵的电流的电流检测器,以及 用于在供应到空气泵的电力和切断之间进行切换的开关。 基于来自电压检测器的输出和来自电流检测器的输出来检测由空气泵供应的二次空气的流量。 基于这样检测的流量来控制开关的动作。

    Motor vehicle alternator and system for controlling the same
    30.
    发明授权
    Motor vehicle alternator and system for controlling the same 失效
    机动车交流发电机及其控制系统

    公开(公告)号:US5763977A

    公开(公告)日:1998-06-09

    申请号:US683956

    申请日:1996-07-19

    IPC分类号: H02K21/00 H02K21/48

    CPC分类号: H02K21/024

    摘要: A motor vehicle alternator connected to an output shaft of an internal combustion engine mounted on a vehicle, comprising a rotor made of a permanent magnet for producing a magnetic field, an armature (stator) having a coil placed opposite to the permanent magnet rotor and a belt drive mechanism for connecting one of the permanent magnet and the armature to the output shaft of the engine to bring them into a relative rotation such that the armature relatively moves in the magnetic field produced by the permanent magnet. In the alternator, there is provided an axial displacement mechanism for displacing at least one of the permanent magnet rotor and the armature in an axial direction of the relative rotation, whereby a magnetic flux passing through the armature is changed. The axial displacement mechanism comprises a solenoid, a plunger housed in the solenoid to be movable when the solenoid is energized and a lever connected to the plunger at one end and to a carrier that carries the armature such that it pivots about a fulcrum to displace the armature in the axial direction of the relative rotation. Other types of the mechanism using a rack and pinion, etc., are used. The operation of mechanism is controlled such that a desired electric power is generated.

    摘要翻译: 一种连接到安装在车辆上的内燃机的输出轴的机动车辆交流发电机,包括由用于产生磁场的永磁体制成的转子,具有与永磁转子相对设置的线圈的电枢(定子)和 带驱动机构,用于将永磁体和衔铁中的一个连接到发动机的输出轴,以使其相对旋转,使得电枢在由永磁体产生的磁场中相对移动。 在交流发电机中,设置有轴向位移机构,用于沿着相对旋转的轴向移动永磁转子和电枢中的至少一个,从而改变通过电枢的磁通量。 轴向位移机构包括螺线管,容纳在螺线管中的柱塞,以在螺线管通电时可移动,以及在一端连接到柱塞的杆和承载衔铁的载体,使得其绕支点枢转以使 衔铁在轴向相对旋转。 使用其他类型的使用齿条齿轮等的机构。 控制机构的操作,使得产生期望的电力。