I'm rather new to the register. I've been a member for about 9 months but don't have a lot of time to post or read due to the rather poor decision of going to college late in life. Long story short... . I'm writing a paper for my Physics class on the history of the Diesel engine. There's plenty of material out there on ol' Rudy but I need some technical physics stuff to talk about when I start explaining how this engine operates. Internal combustion is internal combustion but what makes the Diesel more efficient? and so on. Are there any websites, books out there that anyone knows of that may help?