IT IS WELL RECOGNIZED that the idling and part load fuel economy of diesel engines are better than throttled controlled spark ignition gasoline engines. Using well known principles the explanations for the difference are presented. Fuel consumption rate for similar engines and mileage for similar weight vehicles are presented in graphical form.
Trends of demand, supply and reserve of crude oil for the World and the United States are shown in graphical form.
Future supply scenario of crude oil is presented. The cost of making synthetic crude from coal is very roughly predicted.