(Volvo Group) A new design in engine pistons is increasing fuel efficiency and reducing particulate matter in Volvo Trucks North America’s heavy-duty D11 and D13 engines, the company said.

But it also means that mixing the fuel and air can be tricky, which is why diesel engines have specially-shaped pistons. A diesel engine's piston head looks like someone took a scoop out of the top.

Cylinder Head Design Is One Of The Most Complex And Important Aspects Of Engine Building. We Seek Out The Truth From The Best Head Developers In The Country. Stephen KimWriterFeb 15, 2010 ...

By Gray Baskerville A piston is anything but a slug. It's asked to withstand the cylinder pressures generated by 200,000,000 power strokes (in its 100,000-mile ...

Widmer's head design was developing 10 years ago, as seen in these Cleveland Ford ports done for Penske NASCAR cars. Larry cast aluminum blocks to fill in port floors and the bowl behind intake ...

By Gray Baskerville A piston is anything but a slug. It's asked to withstand the cylinder pressures generated by 200,000,000 power strokes (in its 100,000-mile ...