Recent content by engineer46

I will ask my question different: How CO2 emissions in an engine are produced? What factors affect the emissions? Is this statement correct: More fuel burned = more CO2 emissions?

My questions points ONLY on the typical diesel and petrol engines and a thermodynamic approach behind them. The only numbers that I am considering is the Fuel conversion efficiency, volumetric efficiency and airflow for both type of engines. How does these numbers change for diesel and how...

Diesel specific heat capacity is less than the gas capacity. Thus you need more petrol to travel the same distance as in diesel. Forget about the today's engines, turbochargers, common rail systems, direct injections etc. Before some years diesels had more miles per gallon than the petrol...

Today's engines are very different and this can be controvert. I believe that because diesel engines are more efficient, produce less CO2. I am looking information related on the thermodynamic processes of the two engine types and how diesel (or if you believe petrol, i don't think this is...

As the title says, why diesel engines produce less CO2 than gasoline engines and how is this related to the more torque and less power in diesel engines? PLEASE only a fluid dynamics or thermodynamics approach. Spent hours on searching to find why petrol engines produce more CO2 emissions...

am trying to calculate the moment: So the force is in the middle: M= (Force*distance)/length= [(0.6*10^3)*0.45]/(1.2). Is that the moment?

i will try it and i will be back to you. thank you

I have the stress-strain curve and the load-extension curve for this material. I can get the yield stress for this material but I am not sure how the thickness will be determined using the bending formula. it is not a beam, it is a large plate with b,d and t. By using the moment formula, only b...

can anyone help please?

Homework Statement I have a large polymer plate of 45cm x 120cm, with Young Modulus 0.8 GPa and I want to calculate the safe thickness (before fracture) of that plate on a middle line force across the width of the plate with magnitude of 0.6 kN. The middle line force distribution is shown...

input heat, output cooled air Homework Statement As the title says, I am looking to produce cool air with heat. Homework Equations The Attempt at a Solution

thank you for the welcome. i have already found my project and i am in the middle of it :) thank you anyway. i sent you a pm

can anyone please give me his lights?

Hi, what do you suggest me? I prefer something relevant to energies (wind, solar etc) and to be something who i can found many info on the web to help me with my project.