Engines

So basically, my dad says if i'm going to drive, i need to know how the parts of the car work. When we got to the engine, i could actually tell him stuff! Like the fact that heat goes in, expands so the piston moves, then heat moves out and the piston moves back down. And we could find out how much work it does by finding the area under a PV diagram as well as the efficiency. Of course, a car engine works much faster and the gas expands a lot quicker due to sparks, but it's all basically the same.