On a mission

Discussion in 'General Discussion' started by BAZZER1, Apr 17, 2014.

  1. BAZZER1

    BAZZER1 Hardcore MB Enthusiast

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    Joined:
    Jul 18, 2011
    Location:
    FERNDOWN DORSET
    Car:
    mercedes e320cdi estate
    Hi All
    Can anyone tell me if the weather makes any difference to a cars emissions ??? for example: Hot Weather & Cold Weather/ Wet or Dry Day.
    BAZZER1
     
  2. grober

    grober MB Club Veteran

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    Location:
    Perth, Scotland
    Car:
    W204 C200CDI Estate
    Cold weather is going to markedly increase emissions since low temperatures will require fuel enrichment to achieve stable low speed engine running. Transmission drag will also increase due to increased fluid viscosity although newer oils/fluids are better in this respect. Wet and dry is more problematic but would be related the engine air charge density- I would venture that a little more moisture in the air would be a good thing but might negated if its accompanied by lower temperatures- pretty sure all the emission tests will done under standard conditions of air temperature and humidity.
     
  3. OP
    OP
    BAZZER1

    BAZZER1 Hardcore MB Enthusiast

    Messages:
    271
    Joined:
    Jul 18, 2011
    Location:
    FERNDOWN DORSET
    Car:
    mercedes e320cdi estate
    Thanks for the informative reply, I now know a little more about this. :thumb:
    Cheers Mate
    BAZZER1
     
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