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## Main Question or Discussion Point

Hi, I'm not sure if I've got this in the right section, but I'm hoping someone can point me in the right direction.

I'm trying to create a model of what's actually happening during the combustion cycle in an engine and where the energy is going.

As the intake valve closes and the piston begins to compress the air in the combustion chamber, as the temperature of the air begins to rise, what type of heat transfer is happening?

The best info I can find is off of here http://en.wikipedia.org/wiki/Thermal_conductivity.

Using the equation where conduction = kA(T/x).. k being the conductivity coefficient, A being surface area, T being temp differential and x being the distance between the two temperatures.

Is this what I'm looking for? Would the variable x be for thickness of the block/head/piston (obviously needing to do a separate calculation for each of them)? And would all the heat transfered be lost from the compressed air? I realize I would need set up a spreadsheet to calculate it every couple of degrees of rotation to keep it accurate.

Just hoping someone could let me know if I'm on the right track or not!

I'm trying to create a model of what's actually happening during the combustion cycle in an engine and where the energy is going.

As the intake valve closes and the piston begins to compress the air in the combustion chamber, as the temperature of the air begins to rise, what type of heat transfer is happening?

The best info I can find is off of here http://en.wikipedia.org/wiki/Thermal_conductivity.

Using the equation where conduction = kA(T/x).. k being the conductivity coefficient, A being surface area, T being temp differential and x being the distance between the two temperatures.

Is this what I'm looking for? Would the variable x be for thickness of the block/head/piston (obviously needing to do a separate calculation for each of them)? And would all the heat transfered be lost from the compressed air? I realize I would need set up a spreadsheet to calculate it every couple of degrees of rotation to keep it accurate.

Just hoping someone could let me know if I'm on the right track or not!