Uncover the fascinating story of the saab variable compression engine, a groundbreaking design that never made it to ...

Taking an engine compression test is sort of like checking your car's blood pressure. It's a quick and painless procedure that can reveal hidden issues.

As you may know, an engine's compression ratio is directly linked to its combustion efficiency. All else being equal, higher-compression engines tend to make more power while offering better fuel ...

A computer generated power stroke of an internal combustion engine, following ignition - Pathompong Thongsan/Getty Images When comparing engine specs for nearly any combustion engine automobile, we ...

With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...

A.Here's a pressure-volume diagram for a combustion engine. Although rough, it is an approximation of the so-called air-standard cycle. '' Point (a) is at atmospheric pressure, after which the air is ...

The same solution for very different reasons.

At the time, it was anybody's guess how durable and long-lasting the yet-unproven hybrid car, with its hybrid engine, would ...

Direct-drive fans waste energy and over-cool gas, reducing efficiency and throughput. Horton’s Gas Thermal Control Clutch ...