Detroit series 60 15:1 issues

Discussion in 'Trucks [ Eighteen Wheelers ]' started by DDS60, Feb 21, 2018.

  1. jamespmack

    jamespmack Road Train Member

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    No, they advance it to induce fuel at later in combustion cycle. It raises cylinder temps for a hotter burn. Rising coolant temps and cyclinder temps. But its later in cycle and dont increase power but before it causes black smoke. Lowing soot. Lower temps increase Nox. But perform better. You will see a .5 mpg drop with the lo nox installed. But it's better for the environment. Just uses more fuel. That ok with the tree huggers.
     
  2. benjamin260_6

    benjamin260_6 Medium Load Member

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    Combustion at high temperatures causes higher levels of nox. Advanced timing creates higher cylinder peak pressure which creates more heat. I program Detroit's every day to pre low nox settings. Google "nox emissions" and you'll see that I'm right
     
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  3. spsauerland

    spsauerland Road Train Member

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    Cat Low NOx file is the same, timing is shifted later to lower combustion peak temp/NOx formation.
     
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  4. swaan

    swaan Road Train Member

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    You are correct on all counts but one.

    By making the fuel injection event later in the combustion cycle you are retarding the timing. Advancing the timing makes the combustion event happen sooner in the cycle..

    You have it backwards.
     
  5. swaan

    swaan Road Train Member

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    Correct. Hence the retarded timing
     
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  6. swaan

    swaan Road Train Member

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    Maybe this will help.
     

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  7. jamespmack

    jamespmack Road Train Member

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    Well I feel bad for your customers. We shall just disagree. Retarded timing results in lower cylinder temps. It will not burn hot enough to lower nox.
     
  8. Roberts450

    Roberts450 Road Train Member

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    Higher burn temp means higher NOx emissions.
     

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  9. jamespmack

    jamespmack Road Train Member

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    That link means nothing beside higher ambient temps.

    You should read before posting.
     
  10. Rideandrepair

    Rideandrepair Road Train Member

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    I really hate to get in the middle of this, But as I recall, the lo nox program was a 5% or degree? Retarding of timing, and supposed to only affect mpg by a 5% reduction.