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    • 3. 发明授权
    • Calibrator for timing meter
    • 计时器校准器
    • US4503509A
    • 1985-03-05
    • US402843
    • 1982-07-29
    • Thomas P. BeckerChristopher B. StoutGene P. Hopp
    • Thomas P. BeckerChristopher B. StoutGene P. Hopp
    • F02P17/02F02P17/04G01P21/02G05B23/02G01P3/481G01P21/00
    • G01P21/02F02P17/02F02P17/04F02P2017/003
    • An oscillator provides a series of pulses to the first of a plurality of cascaded counters. The BCD outputs of each counter provide a particular digit in the number of pulses counted during selected intervals. At least two AND means are coupled to respective sets of the counter outputs to provide speed signals when the corresponding numbers of pulses have been counted. A selected one of such signals resets the counters and also provides an inductive output for the magnetic probe of a timing meter. Additional AND means are respectively coupled to different sets of the counter outputs and provide timing signals when their respective numbers of pulses have been counted. A selected one of the timing signals energizes an LED which produces a light flash for the luminosity probe of the timing meter.
    • 振荡器向多个级联计数器中的第一个提供一系列脉冲。 每个计数器的BCD输出提供在选定间隔期间计数的脉冲数的特定数字。 当相应数量的脉冲被计数时,至少两个AND装置耦合到相应的计数器输出组。 所选择的一个这样的信号复位计数器,并且还为定时计的磁探针提供感应输出。 附加的和装置分别耦合到不同的计数器输出集合,并且当它们各自的脉冲数已被计数时提供定时信号。 所选择的一个定时信号激励LED,该LED产生用于定时计的发光度探针的闪光。
    • 6. 发明授权
    • Method and apparatus for measurement of engine ignition timing
    • 用于测量发动机点火正时的方法和装置
    • US4331029A
    • 1982-05-25
    • US166767
    • 1980-07-08
    • Scott E. Wilson
    • Scott E. Wilson
    • G01M15/04F02B1/04F02P17/00F02P17/04G01M15/00
    • F02P17/04F02B1/04
    • Method and apparatus for measuring ignition timing of an internal combustion engine wherein angular position of the engine crankshaft is monitored while microwave radiation is injected into a selected engine cylinder. An angular position of the engine crankshaft at an apparent top dead center position of the piston in the selected cylinder is identified as a function of microwave resonances within the cylinder. The angle of piston top dead center position is then compared with an event correlated with ignition at the selected cylinder to determine the ignition angle relative to the piston top dead center position. Ignition timing may then be adjusted to obtain a desired angular relationship between ignition and piston top dead center.
    • 用于测量内燃机的点火正时的方法和装置,其中在微波辐射被喷射到选定的发动机气缸中的同时监测发动机曲轴的角位置。 在所选择的气缸中的活塞的明显上止点位置处的发动机曲轴的角位置被识别为气缸内的微波共振的函数。 然后将活塞上止点位置的角度与与所选气缸处的点火相关的事件进行比较,以确定相对于活塞上止点位置的点火角度。 然后可以调整点火正时以获得点火和活塞上死点之间的期望的角度关系。
    • 7. 发明授权
    • Reference signal processor circuit
    • 参考信号处理器电路
    • US4255778A
    • 1981-03-10
    • US048038
    • 1979-06-13
    • Werner Breckel
    • Werner Breckel
    • F02P17/04F02P17/00
    • F02P17/04
    • To counteract the phase error in the signal from an rpm transducer of an engine test stand or analyzer at varying engine speeds, the signal processor of the invention receives the transducer signal whose amplitude varies with frequency and generates therefrom an output signal of constant amplitude. This signal is supplied to a threshold switch which includes circuitry for integrating periodic output signals and generating therefrom a control signal whose amplitude is proportional to the frequency of the input signal. This analog signal is used to alter the switching threshold of the threshold switch, thereby imparting to the output signal a frequency compensation which counteracts the inherent phase error and results in an output signal of constant phase with respect to the transducer signal. The apparatus of the invention is particularly useful for adjusting ignition timing, valve timing, etc. in internal combustion engines in which the input signal is derived from the crankshaft speed.
    • 为了在变化的发动机速度下抵消来自发动机试验台或分析仪的rpm换能器的信号的相位误差,本发明的信号处理器接收振幅随频率变化的换能器信号,并由此产生恒定幅度的输出信号。 该信号被提供给阈值开关,该阈值开关包括用于积分周期性输出信号并由此产生振幅与输入信号的频率成比例的控制信号的电路。 该模拟信号用于改变阈值开关的切换阈值,从而将输出信号赋予与固有相位误差抵消的频率补偿,并产生相对于换能器信号恒定相位的输出信号。 本发明的装置对于调节从曲轴速度导出输入信号的内燃机中的点火正时,气门正时等特别有用。