P atent documentation was recently published by the USPTO for a revolutionary new Ferrari engine showcasing oval- or ...

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.

Kia is recalling over 100,000 vehicles due to issues involving the piston oil ring. The affected vehicles are Kia MY SOUL and ...

Although Ferrari’s patent only specifies the engine would have at least two cylinders, one of the drawings shows a V12. The ...

According to the recall, Kia voluntarily issued a recall through the NHTSA after it learned the piston oil rings may ... which could result in engine damage that "can cause a vehicle stall or ...

Kia will notify all owners with impacted vehicles with instructions to bring their cars ... each engine, replacing those with damaged cylinder walls. The dealers will also install piston-ring ...