As a mechanical project we have been asked to design a micro steam car

[Ronand]

[ mod note: moved from homework ]

as a mechanical project we have been asked to design a micro steam car. we have chosen to use a wobbler engine for this. The aim of the project to see how far this car can travel based on a given amount of fuel. We are making a boiler which will provide the steam to run the piston but we have no idea on how to calculate the sizing of the piston. We are assuming the pressure in the boiler will be at 2 bar. how do I calculate the piston sizing ?

 

[Jobrag]

Calculate, or if you have enough of the chassis built measure, the force needed to get started, from the diameter of the wheels calculate the torque required, from the distance of the con rod to the wheel centre calculate the force required on the con rod, from that value calculate the piston diameter.