We may receive a commission on purchases made from links. While browsing auto repair and maintenance tools at your local parts store, you've likely come across compression testers like the Orion Motor ...

The Advanced Power Systems Research Center (APSRC) operates 11 internal combustion engine test beds, featuring dynamometers ranging from five kilowatts to 745 kilowatts for powertrain research, along ...

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 using ...

Diesel and gasoline engines might look alike under the hood, but they use oil in very different ways. Gas engines run cleaner, but diesels create much more soot, crank out higher compression forces, ...

General Motors is promising cleaner gasoline engines at the very moment Washington is making it easier to sell thirstier vehicles. The tension between those two forces, corporate pledges and looser ...

Cummins engines have long been synonymous with diesel power, but for the first time in its 100-year history, the company has introduced a gasoline-powered engine. The B6.7 Octane is the company's ...