The Knight sleeve valve engine used the four-stroke Otto-cycle system present in most modern vehicle engines. Starting with the piston at the top of the cylinder, the crankshaft's rotation pulls ...

An engine is an engine, right? Well, no. Some are just more engine than others. This list includes 10 of the engines that ...

There are several variations of engine design that have been experimented with over the years, such as the Knight Sleeve ...