To get an idea of how realistic it would be to build an Otto cycle engine with the displacement you calculated in exercise 11, assume that your engine had cylinders each the size of a two-liter soft drink bottle (a very large cylinder for an Otto cycle engine designed for automobile use!). How many cylinders would be required to produce the desired power?

Involve the world’s fastest truck record holder, a 1940 Ford fire truck. Its top speed is 404 mph! It was powered by two Rolls Royce 601 Viper jet engines with afterburners, developing an equivalent to 1.20 × 10⁴ HP. It consumes 2.0 × 10² lbm of fuel per second (see http://www.jetfiretruck.