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    • 1. 发明授权
    • Rotational turbocharger speed detector
    • 旋转涡轮增压器速度检测器
    • US06298728B1
    • 2001-10-09
    • US09296470
    • 1999-04-22
    • Nicholas FeketeKarsten FingerLothar Welte
    • Nicholas FeketeKarsten FingerLothar Welte
    • G01P302
    • G01P3/48F02P5/1528G01P3/4802Y02T10/46
    • An arrangement for detecting the turbocharger rotational speed on internal-combustion engines is provided with at least one piezoelectric acceleration sensor fixed on the turbocharger and with an analyzing circuit having an analog filter arrangement for filtering the output signals of the acceleration sensor. The output signals of the filter arrangement are fed by way of a frequency-to-voltage converter in the form of an analog voltage, or directly in the form of frequency signals, as input signals to an electronic control unit of the internal-combustion engine or to a measuring and/or display unit. As a result, the turbocharger rotational speed can be detected at a reasonable cost with a small and robust arrangement suitable for mass production and requiring no constructional changes on the turbocharger.
    • 用于检测内燃机上的涡轮增压器转速的装置设置有固定在涡轮增压器上的至少一个压电加速度传感器和具有用于过滤加速度传感器的输出信号的模拟滤波器装置的分析电路。 滤波器装置的输出信号通过频率 - 电压转换器以模拟电压的形式或直接以频率信号的形式作为输入信号馈送到内燃机的电子控制单元 或测量和/或显示单元。 结果,可以以合理的成本检测涡轮增压器旋转速度,其结构适用于大规模生产并且不需要涡轮增压器的结构变化。
    • 10. 发明申请
    • Method and apparatus for detemining the rotational speed of turbochargers
    • 用于确定涡轮增压器转速的方法和装置
    • US20060064231A1
    • 2006-03-23
    • US11068847
    • 2005-03-02
    • Nicholas FeketeLorenzo Matassini
    • Nicholas FeketeLorenzo Matassini
    • G06F19/00F02D23/00
    • G01P3/44
    • The invention relates to a method and a corresponding apparatus for detecting the rotational speed of turbochargers, especially on internal combustion engines in motor vehicles, with the steps: recording the body sound (SE) of the turbocharger and analyzing the frequency spectrum (30, 31, 32, 33) of the recorded body sound (SE). According to the invention, in the analysis of the frequency spectrum several frequency signals (SD1, SD2, SD3) are determined, which represent possible rotational speeds of the turbocharger, an amplitude analysis of the recorded body sound (SE) is performed in order to determine an estimated value (SD-estimate) for the turbocharger speed, and the estimated value (SD-estimate) is correlated with the several frequency signals (SD1, SD2, SD3) in order to determine the frequency signal (SD2) as the actual turbocharger rotational speed (Dactual) which correlates with the greatest probability with the obtained estimate (SD-estimate).
    • 本发明涉及一种用于检测涡轮增压器,特别是汽车内燃机的涡轮增压器的转速的方法和相应的装置,其特征在于:记录涡轮增压器的身体声音(S E) 分析记录的身体声音(S SUB> E)的频谱(30,31,32,33)。 根据本发明,在对频谱的分析中,确定了几个频率信号(S L1,S 2,D 3,S 3 3)),哪些 表示涡轮增压器的可能的转速,执行所记录的身体声音(S SUB)的振幅分析,以便确定估计值(S D D估计值),用于 涡轮增压器速度和估计值(S&gt; D估计)与几个频率信号(S SUB D 2,S 2,D 2,S 2 以确定作为与最大概率相关的实际涡轮增压器旋转速度(D <实际)的频率信号(S SUB> D2 ) 与所获得的估计(S&lt; D - 估计)。