The California Air Resources Board has approved for 2027 what the Engine Manufacturers Association refers to as “sweeping new regulations affecting heavy-duty trucks sold in the state.” The regs ...

Diesel engines vary in size and application greatly, from small cars to large vessels. The most efficient four-stroke diesel ...

We’ve reported on a lot of innovative diesel parts, concepts, and theories that have been introduced in the last decade, with various engine blocks, cylinder heads, turbochargers, and injection ...

New fuel injectors eliminate soot without expensive exhaust treatment devices. Ducted fuel injection for diesel engines, developed at Sandia National Lab’s Combustion Research Facility by Charles ...

In the past two decades, landmark legislation on air quality has had a far-reaching impact in diesel engine design and maintenance. Specifically, the EPA 2010 emission rules governing on-highway ...

The Jeep Compass, tested over two months, proves its enduring appeal with a tough suspension ideal for varied terrains. Its build quality and diesel engine are praised, though the gearbox has lag.

The best Cummins diesel engines are the result of decades of innovation, which all began with founder Clessie Cummins. They also have a history of racing at the Indianapolis 500. In 1934, Cummins ...