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    • 2. 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)。