RPM vs Fuel Consumption

  1. Why are usually more wasteful fuel engine at low RPM, as the example image below, 900 RPM more wasteful fuel consumption than 1600 RPM.
     

    Attached Files:

    Last edited: Mar 28, 2012
  2. jcsd
  3. Mr Mandala, if I may be corrected, the data shown in the picture upside down with your statement. fuel consumption at 900 rpm is higher than at 1600 rpm. why is that? What kind of analysis?
     
  4. Excuse me sir, I was wrong to write and I have to change it. Can you help me to analyze it?
     
  5. Part of the issue will be the longer time that heat can be lost to the cylinder walls, reducing the amount of energy to expand the air and be converted to mechanical energy.
     
  6. Although the engine was already in the working temperature if the heat will still be lost in the cylinder wall ?
     
  7. jim hardy

    jim hardy 5,359
    Science Advisor
    Gold Member
    2014 Award

  8. jim hardy

    jim hardy 5,359
    Science Advisor
    Gold Member
    2014 Award

Know someone interested in this topic? Share this thead via email, Google+, Twitter, or Facebook

Have something to add?