What is the temp of gas coming out the exhaust pipe?

Discussion in 'Freightliner Forum' started by Zerofayt, Feb 6, 2020.

  1. Zerofayt

    Zerofayt Bobtail Member

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    Apr 29, 2016
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    Hello, im just wondering if anyone knows what kind of temperatures are coming out of the stacks or exhaust pipes and going into the atmosphere. Im sure its high especially during a regen cycle so if anyone knowz those 2 temp ranges, id be happy to hear.
    I understand that regen requires 600 deg celcius or 1100 deg f to conduct the proper regen cycle. But if trucks are dumping 1000deg f gases into the air for 30 min at a time once per day.... i think we have a bigger problem on our hands than the exhaust pollutants.

    Thanks in advance.
     
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  3. buddyd157

    buddyd157 Road Train Member

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    i googled it..

    Hot Exhaust Gases
    Diesel engine exhaust gases vary with speed and load. High loads and high speeds result in the highest temperatures. Generally, temperatures of 500–700°C (932–1293°F) are produced in the exhaust gases from diesel-cycle engines at 100% load to 200–300°C (392–572°F) with no load. Exhaust gases normally discharges at a temperature of around 420°C (788°F).
     
  4. pushbroom

    pushbroom Road Train Member

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    1100f is normal for a regen. Probably sub 900 out the stack depending how long your exhaust is.
    If you are doing a 30 min regen once per day something is wrong. Can usually get 100hrs between regens on newer engines.
    Not sure what you are trying to get at here. Lots of trucks run around 900f working heavy pulling a hard load. My 6.0 runs 1200f pulling my camper.
     
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  5. REO6205

    REO6205 Road Train Member

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    I sense an agenda here.
     
  6. stillwurkin

    stillwurkin Road Train Member

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    Hmm thats what I was think'in. If we could just turn the temperature down on the suns rays..lol.
     
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  7. x1Heavy

    x1Heavy Road Train Member

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    Mr Pyrometer in the older iron rates up to 1550F for short periods of time at the turbo or manifold. The turbo will be red to orange hot.

    The stacks are going to be closer to 500 degrees or so, give or take. Way less than that in some vehicles if the piping is long enough.

    Emissions trucks try to generate about 1200F or higher and you wonder why they burn up down to the frame across the USA now and then.
     
  8. JC1971

    JC1971 Road Train Member

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    Is the little snowflake going to melt?
     
  9. D.Tibbitt

    D.Tibbitt Road Train Member

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    Put ur hand up there and tell us how hot she is
     
  10. Zerofayt

    Zerofayt Bobtail Member

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    Apr 29, 2016
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    You all are real funny. I just wanted some facts. I googled too and i recognized the temps are at exhaust manifold, not out the pipe. If there is an agenda its to weigh the benefits of the dpf system vs the extra heating dpf regen requires. Because the def and dpf systems have gotten so expensive to maintain and they are so intrusive to normal operations.

    Truth is the whole climate change arguement is a whole lot of suspicions and not much evidence beyond the observations. No-one analyzes the sources of heat and their impacts, just carbon dioxide and thats not a very wholesome look at the problem.
     
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  11. Mid-May Trucker

    Mid-May Trucker Road Train Member

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    Weather reports are determined based on how many regens will be performed in the area.
     
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