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What RPM "KLW" mean?

Discussion in 'Physics' started by esm., Apr 7, 2012.

  1. esm.

    Thread Starter Member

    Jan 20, 2012

    Could somebody explain what RPM "KLW" mean, in an car, bus or truck vehicle?

    I know RPM mean rotations per minute of the engine, but RPM "KLW"?
    Would it be the number of rotation per minute of the alternator (battery charger) ?

    I am asking because last week I've used a Mercedes-Benz automotive scanner in a Mercedes bus, and the PC software of this scanner shows two kinds of RPM values in the screen:

    - RPM Instantaneous
    - RPM KLW

    In this Mercedes-Benz scanner, I noticed the "RPM KLW" and the "RPM Instantaneous" always have similar values.
  2. strantor

    AAC Fanatic!

    Oct 3, 2010
    is it this bosch scanner?

    If so, see appendix:
    Everything I can find seems to be in Portuguese

    Interrupção, curto circuito entre KLW e positivo ou correia patinando
    Interruption, short circuit between KLW and positive or belt slipping

    If your scanner is in another language, or even if not, the car is german and there's a high probability it's an abbreviation for something in another language. I think it's probably the alternator though.
  3. panic mode

    AAC Fanatic!

    Oct 10, 2011
    probably one reason you don't find it it because it is German and not English abbreviation.
    any of the three letters can be many things (they have more than one word starting with K).
    for example possible candidate is Kurtz (short), Kraftzeug (vehicle).
    L may be Lauf, LaufZeit etc. (run..., runtime...)
    W could be Wiedergabe (feedback).
    I don't know, just speculating... Perhaps one of German members could help.
    Last edited: Apr 21, 2012