Dimpled pistons might sound strange, but some say they could be the future for diesel power. We've looked at the arguments ...

Diesel engine manufacturer Cummins, together with Tula Technology, will test out a six-cylinder semi truck diesel engine, outfitted with a cylinder-deactivation system dubbed Dynamic Skip Fire. The ...

You never know just just how capable something is till you push it too far. We finally managed to get the F-550 stuck, while shooting some truck-to-truck photos while plowing uphill on this gravel ...

Internal combustion engine blowby, whether gasoline or diesel, occurs when part of the compressed mixture of air and fuel leaks past the piston rings during the compression or power strokes of a ...

Internal combustion engines are incredibly complicated machines that many of us interact with on a daily basis, but don't completely understand. You get in your car, turn the key or push the start ...

Cummins released details of its 2027 X15 diesel engine, which it says meets EPA 2027 emissions requirements while improving fuel economy — and without adding weight or using more diesel exhaust fluid.

A team of engineers at the University of New South Wales (UNSW) in Sydney has figured out a way to run a diesel engine on a mix of diesel and hydrogen, dramatically lowering its emissions. Why do we ...