The upsides of cylinder deactivation systems are obvious: Estimates from the U.S. Department of Energy say they can improve fuel economy by about 7.5 percent. (Many manufacturers offering cylinder ...

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 ...

The 2.7-liter turbocharged four cylinder 2019 Chevrolet Silverado returned worse fuel economy than a similarly equipped 5.3-liter V8 model in a recent Car and Driver comparison test. For reference, ...

This week's Car Talk had a great problem from a caller (you can listen to that episode here - show #1045: Pi Over Two Dopes). In short, the guy calling drove an 18-wheeler truck. His fuel gauge was ...

Active Fuel Management (AFM), otherwise known as Cylinder Deactivation is a General Motors engine technology that shuts down half of the engine’s cylinders in light driving conditions to improve fuel ...

How Does Cylinder Deactivation Save Fuel? Towing a big trailer up Davis Dam may require a big, burly V-8 engine, while cruising along a level freeway when that same truck is empty barely requires a ...