Air Motor Design

1 start with the choice of cylinder number better an uneven one either 5 or 7 if you aim at a ripple free function if it is not compulsory you can build on 3 pistons basis.

2 let the dead volume be as small as possible since it reduces the volumetric efficiency

3 make the choice of the ratio stroke/ piston diameter and of the cinematic i.e. connection between pistons and shaft. Decide if you design a radial or axial motor type.

The rest is application of thermodynamics rules and formula you have in any book and computation of the mechanical strength of parts. If you have connecting rods do not forget stability check under compressive loads.

If you are with your work advanced I am willing to check it and give you further hints but I shall never make your work. For it use the PM channel

Why uneven number of pistons ? What is the advantages between 2 pistons basis and 3 piston basis ?

What is dead volume ?

I have initiated some initial calculation on power and energy . I could use more hints from you .

Regards

I would suggest first you register on CR4.

Second you explain what you already did and then I can help you further. I will always correct what you have done but first you have to do your work: thinking, computing, a. s. o.

OK? Than proceed.

Hi.. i am doing the same project and i need to know what formulas to use for calculations. any advice will be apreciated. Thanx.