How to make an engine simulation with DMU KINEMATICS in Catia V5!?

I've tried and tried for hours. I managed to simulate the rotation of the crankshaft and the rod but i cannot link it to the cylindrical movement of the piston.Please if anyone can help me to make it work...
5 Answers

Okay... Nice assembly. But there is an Interference in your assembly :)
Answered with a tutorial: https://grabcad.com/tutorials/how-to-make-an-engine-simulation-with-dmu-kinematics-in-catia-v5

I made the assembly but i wanted to find out what's the command that shows the interference like our couleague Shoeb Deshmukh showed us in the picture.