There’s a new player on the block as far as engine designs go, and this one is certainly one to watch.[youtube id=”ezuOa9QNjwE” width=”800″ height=”450″]The small four cylinder engine pictured is about a fourth the size of a conventional engine, yet it produces nearly equivalent power. The Clarke-Brayton design also improves efficiency by between 10-20 percent. The box-like and horizontal design is also a stabilizing factor, and it curbs noise and vibration.
Designed to power highway-going trucks, the new engine, produced by Motiv Engines, aims to run on natural gas and reduce the fuel consumption needs of commercial vehicles. The prototype pictured runs on diesel, but an LNG variant is in the works. The Clarke-Brayton design relies on recycling air from one cylinder to the next, allowing optimization of the cycle across a three cylinder system at any given time; combustion chamber volume is also varied in order to facilitate maximum efficiency through careful manipulation of airflow during the cycle.
Green Car Congress has given us an extensive breakdown, including the finer details of the Brayton cycle, as well as some of the additional technology employed by Motiv in the Clarke-Brayton design.