Sorry as I didn't fully explain my last post. He's a typical diesel in a truck is going to see around 40% thermodynamic efficiency. Internal combustion engines are chemical reaction driven. Gasoline has 8, don't hold me to that and I don't feel like looking this up, hydrocarbons and highway diesel 14 hydrocarbons. With more hydrocarbons there is more potential to make more energy, thus why diesel and heavy fuel oils are more efficient.
Turtle, your right but you can't just throw fuel at it. You have to add some air as well. If that statement was true I could just throw 100% over's in my truck and make lots of power and lots of smoke. Doesnt work like that. You need to balance timing, pulse width, and boost. I'm talking about newer common rail turbo diesels here. I'll finish this later.
