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    • 6. 发明授权
    • Fuel injection detecting system for a diesel engine
    • 柴油机燃油喷射检测系统
    • US4669440A
    • 1987-06-02
    • US437680
    • 1982-10-29
    • Sadao TakaseYoshihisa KawamuraToyoaki Nakagawa
    • Sadao TakaseYoshihisa KawamuraToyoaki Nakagawa
    • F02B3/06F02D41/20F02D41/40F02M65/00F02M39/00
    • F02D41/401F02D41/20F02M65/005F02B3/06F02D2200/063F02D41/2096Y02T10/44
    • A fuel injection detecting system is used with a diesel engine having a fuel injection nozzle, the nozzle including a movable member for effecting fuel injection into the engine when the valve member is displaced from its normal position and interrupting fuel injection when the valve member is returned to its normal position. The detecting system includes a sensor for sensing displacement of the valve member and generating a signal indicative thereof. A comparator is provided to compare the signal from the sensor with a reference signal and to generate a signal indicative of fuel injection via the nozzle. The detecting system also includes a device for preventing the fuel injection signal from including components unrelated to fuel injection via the nozzle. This device may disable the sensor for a predetermined period immediately after the first major displacement of the valve member. Alternatively, the device may adjust the reference voltage so as to hold the voltage thereof at a level exceeding that of all features of the sensor signal except the signal largest peak during each fuel injection.
    • 燃料喷射检测系统与具有燃料喷射喷嘴的柴油发动机一起使用,该喷嘴包括可动构件,用于当阀构件从其正常位置移位时进行燃料喷射并在阀构件返回时中断燃油喷射 到正常位置。 检测系统包括用于感测阀构件的位移并产生指示其的信号的传感器。 提供比较器以将来自传感器的信号与参考信号进行比较,并产生指示经由喷嘴的燃料喷射的信号。 检测系统还包括用于防止燃料喷射信号包括经由喷嘴与燃料喷射无关的部件的装置。 该装置可以在阀构件的第一主要位移之后立即禁用传感器达预定的时间。 或者,器件可以调整参考电压,以便在每次燃料喷射期间除了信号最大峰值之外,将其电压保持在超过传感器信号的所有特征的电压。
    • 7. 发明授权
    • Crank angle detecting device for an internal combustion engine and
detecting method therefor
    • 用于内燃机的曲柄角检测装置及其检测方法
    • US4471653A
    • 1984-09-18
    • US461124
    • 1983-01-26
    • Yoshihisa KawamuraToyoaki Nakagawa
    • Yoshihisa KawamuraToyoaki Nakagawa
    • F02P17/04F02D41/34F02M65/00F02P7/077G01M15/00
    • F02D41/009F02P7/0775F02D41/0097
    • A device for determining a crank shaft angular position performs operation for determining the crank shaft angular position at an occurrence of timing control in an internal combustion engine control, such as fuel injection timing control, spark ignition timing control and so forth. In determination of the crank shaft angular position, an angular acceleration is firstly calculated with respect to respective intervals of crank reference angle signals. In calculation, the determined angular acceleration is regarded as constant instead of an angular velocity. At the same time, time intervals between respectively adjacent crank reference signals and between one of crank reference signal and a timing control signal immediately following to the one of crank reference angle signal are measured. Based on the determined angular acceleration and the time interval between the one of crank reference angle signal and the timing control signal, the crank shaft angular position at the occurrence of the timing control signal is determined. This may provide determination of the crank shaft angular position precisely following to the actual crank shaft angular position even when the engine revolutional fluctuation is significant.
    • 用于确定曲柄轴角位置的装置执行在内燃机控制中的定时控制发生时确定曲柄轴角位置的操作,例如燃料喷射正时控制,火花点火正时控制等。 在确定曲柄轴角度位置时,首先根据曲柄参考角度信号的各个间隔计算角加速度。 在计算中,所确定的角加速度被认为是恒定的而不是角速度。 同时,测量相应的曲柄参考信号之间和曲柄参考信号之一之间的时间间隔和紧跟在曲柄参考角度信号之后的定时控制信号。 基于确定的角加速度和曲柄参考角度信号与定时控制信号之间的时间间隔,确定出现定时控制信号时的曲轴角位置。 即使当发动机转动波动很大时,也可以精确地跟随实际的曲柄轴角度位置来确定曲轴角度位置。
    • 8. 发明授权
    • Device and method for measuring a temperature difference
    • 用于测量温差的装置和方法
    • US4609292A
    • 1986-09-02
    • US430727
    • 1982-09-30
    • Masaharu AsanoYoshihisa KawamuraToyoaki Nakagawa
    • Masaharu AsanoYoshihisa KawamuraToyoaki Nakagawa
    • F02D45/00F02B77/08G01K3/14G01K7/00G01M15/00G01K13/00
    • F02B77/08G01K3/14Y02T10/166
    • A device and method for measuring a temperature difference at different positions which cancels offset voltages produced by a temperature sensitive element, e.g., a thermocouple used in the device and the device itself. The device comprises: (a) an amplifier for receiving and amplifying the output signal produced by the temperature sensitive element and output ting a voltage corresponding to a sensed temperature difference; (b) a comparator for determining that the output signal of the temperature sensitive element should be zero level by sensing a condition that the temperature difference between the two different positions is zero; (c) a memory for storing the value of the voltage of the amplifying means outputted when the comparator determines that the output signal of the temperature sensitive element should be at a zero level; and (d) means for subtracting the stored voltage value in the memory from the current output voltage value of the amplifier so as to obtain a modified output voltage value accurately corresponding to the current temperature difference free from offset voltage errors.
    • 用于测量在不同位置处的温度差的装置和方法,其消除由温度敏感元件(例如装置中使用的热电偶和装置本身)产生的偏移电压。 该装置包括:(a)放大器,用于接收和放大由温度敏感元件产生的输出信号并输出​​对应于感测温度差的电压; (b)比较器,用于通过感测两个不同位置之间的温度差为零的条件来确定温度敏感元件的输出信号应为零电平; (c)存储器,用于存储当比较器确定温度敏感元件的输出信号应处于零电平时输出的放大装置的电压值; 以及(d)用于从放大器的当前输出电压值减去存储器中存储的电压值的装置,以便获得与没有偏移电压误差的当前温度差精确对应的修正的输出电压值。