Engines such as automobiles and airplanes, vehicles and machines around the world are equipped with engines that generate power. Ever since the first steam engine was invented in the mid 1600's, ...

It could feel more sporting; the benefiting Alfas are still heavy First there was the four-stroke petrol engine, devised by Niklaus Otto. That's why the four-stroke system is known as the Otto cycle.

The vast majority of automotive petrol engines operate on what's referred to as the 'four-stroke cycle'. In a conventional single-cylinder petrol engine the hot, expanding gas -- created by burning ...