A recently filed patent details a new GM cylinder deactivation system that appears to be heading to the next-gen V8 engines ...

Testing of a sophisticated cylinder deactivation technology on a Cummins engine showed a 74% reduction in nitrogen oxides (NOx) emissions. Cylinder deactivation is viewed as one of the main strategies ...

There has always been some debate over the relative fuel efficiency of engines of varying displacement. But regardless of the displacement, a certain amount of energy (fuel) is required to do a ...

Tula's combustion DSF/DFM systems have proven smooth and reliable in over a million V-8 Chevy and GMC trucks so far. To find out how seamlessly Tula's new DMD works in a zero-cylinder electric car, we ...