1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Composition of fuel, AFR , & of air

  1. Dec 19, 2011 #1
    1. The problem statement, all variables and given/known data
    hi guys, i have problem regarding this matters.

    Products : hydrocarbon

    if i have this :

    CO2 - 80%
    CO - 0.9%
    O2 - 8.8%
    N2 - 82.3%

    1) how to determine the composition of the fuel?

    2) the air fuel ratio?
    known , the air fuel ratio is : mass of air / mass of fuel

    how can i get the mass base on the given data?

    3) the percentage of excess air used.

    please help advice to settle this problem.


  2. jcsd
  3. Dec 20, 2011 #2


    User Avatar
    Science Advisor
    Homework Helper
    Gold Member

    So you have a gas mixture composed of 80% CO2 and 82.3% N2?

    Nonsense! Think about it some more and get back to us...
  4. Dec 20, 2011 #3
    sorry, typo error..

    CO2 - 8.0%
  5. Dec 20, 2011 #4


    User Avatar

    Staff: Mentor

    No idea what the question is. Please don't ignore homework template - it requires you to post the question verbatim, not just some subset of the information.

    You mentioned hydrocarbon, so regardless of what the gas mentioned is I would expect it to contain water - but it is not listed.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook