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6 条记录 (耗时 0.009 秒)

    Oil deterioration detector
    1.
    发明公开
    Oil deterioration detector 失效
    Ölqualitätsdetektor。

    公开(公告)号：EP0080632A1

    公开(公告)日：1983-06-08

    申请号：EP82110482.5

    申请日：1982-11-12

    申请人： NISSAN MOTOR CO., LTD.

    发明人： Yasuhara, Seishi ,  Kobayashi, Hiroshi ,  Kita, Toru ,  Saito, Hideyuki

    IPC分类号： G01N27/22 ,  G01R27/26

    CPC分类号： G01N33/2888 ,  F01M11/10 ,  G01N27/22 ,  G01R27/2605

    摘要： An apparatus detects the degree of deterioration of lubricating oil used in an internal combustion engine by measuring the dielectic constant of the lubricating oil. The apparatus includes a sensor (16) having a pair of spaced apart electrodes dipped under the lubricating oil to form a sensor capacitor whose capacity varies as a function of the dielectric constant of the lubricating oil. The sensor capacitor is connected to a fixed capacitor to form a voltage divider connected across an AC voltage source (14) which generates an AC voltage of a constant frequency so that a voltage is developed across the sensor capacitor which voltage corresponds to the dielectric constant of the lubricating oil. The frequency of the AC voltage is set at a value ranging from 50 KHz to 500 KHz.

    摘要翻译： 设备通过测量润滑油的介电常数来检测内燃机中使用的润滑油的劣化程度。 该装置包括传感器（16），其具有浸在润滑油下面的一对间隔开的电极，以形成容量随着润滑油的介电常数而变化的传感器电容器。 传感器电容器连接到固定电容器以形成跨越交流电压源（14）连接的分压器，该分压器产生恒定频率的交流电压，从而跨过传感器电容器产生电压，该电压对应于介电常数 润滑油。 AC电压的频率设定为50KHz〜500KHz的范围。

    Position sensing arrangement for use in a fuel injection pump or the like
    4.
    发明公开
    Position sensing arrangement for use in a fuel injection pump or the like 失效
    位置的燃料喷射泵等测量装置。

    公开(公告)号：EP0114337A2

    公开(公告)日：1984-08-01

    申请号：EP83112790.7

    申请日：1983-12-19

    申请人： NISSAN MOTOR CO., LTD.

    发明人： Kita, Toru

    IPC分类号： F02M65/00 ,  F02D41/02

    CPC分类号： F02D41/408 ,  F02M41/126 ,  F02M59/44 ,  F02M2200/20 ,  Y02T10/44

    摘要： A position sensor for a valve or the like includes a first electrode (60) disposed about the valve or a member (40) associated therewith in a manner that the interfacial area between the valve and the electrode remains constant irrespective of the position of the valve. One or more second electrodes (66, 68) are disposed in a manner that the interfacial area between the valve and the electrode varies with the position of the valve. By sensing the change in electrostatic capacity between the electrodes the position of the valve may be detected. The sensor finds application in a fuel injection pump wherein it permits a very compact solenoid (motor)/sensor arrangement.

    Flow rate measuring apparatus having vortex-generating element and hot wire element
    5.
    发明公开
    Flow rate measuring apparatus having vortex-generating element and hot wire element 失效
    流与Wirbelerzeuger-和热丝元件测量装置。

    公开(公告)号：EP0019206A1

    公开(公告)日：1980-11-26

    申请号：EP80102497.7

    申请日：1980-05-07

    申请人： NISSAN MOTOR CO., LTD.

    发明人： Kita, Toru

    IPC分类号： G01F1/32 ,  G01F7/00

    CPC分类号： G01F1/3272 ,  G01F1/684 ,  G01F1/698 ,  G01F1/72 ,  G01F7/00

    摘要： Apparatus for measuring the velocity of the rate of flow of a flowing fluid, comprising a vortex-generating element (20) disposed in a flow tube to create a Karman vortex street in the fluid flow, a hot wire element (22,22') disposed in the flow tube, transducer means (22,22',30,50,62) for producing first flow rate signal based on the frequency of shedding of Karman vortices from the vortex-generating element (20) and second flow rate signal (30,40,64) based on the cooling effect of the flowing fluid on the hot wire element (22,22') and signal selection means (68,70) for selectively putting out the first signal under steady flow conditions and the second signal under pulsating flow conditions. Preferably the hot wire element (22,22') is made to serve also as the probe element for detection of the vortex generation frequency, and the first signal under steady flow conditions is utilized alsoto calibrate the second signal.