Researchers aim to meld the best attributes of both the power-dense two-stroke and the vastly cleaner four-stroke engines.

most cars nowadays use 4-stroke engines, including all Porsche engines. These strokes are effectively movements of the pistons inside the engine within one combustion cycle: intake, compression ...

Inside Porsche's Patent for a Six-Stroke Engine U.S. Patent and Trademark Office. From the January/February 2025 issue of Car ...

The Basics Of An Internal Combustion Four-Stroke Engine An internal combustion engine works by repeating the same four steps over and over. These steps are known as strokes, which give the typical ...

Combustion engines are classified initially based on how they combust fuel (either internally or externally). Within each category, there are a number of different types of designs. Two stroke engines ...

The stroke is considerably shorter, and uses energy of the engine's exhaust vacuum to assist in the combustion cycle ... multiple arrays of cylinders (2, 4, 5, 6, 8, etc.) in an engine from ...

The sounds. The smells. The feels that electrify the senses and carry you back to simpler times. For many motorcycle enthusiasts, working and riding on two-stroke bikes capture the essence of a ...