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 ...

The automotive industry continues to be a hotbed of innovation, with activity driven by the demand for improved engine performance, higher fuel efficiency and the need to comply with government ...

If your car has Active Fuel Management, you've probably already considered disabling it. But are AFM disablers even safe and ...

Jacobs Vehicle Systems provides a closer look at how Cylinder Deactivation (CDA) and Active Decompression Technology (ADT) improves emissions, fuel economy and driver comfort in an International LT625 ...

Jacobs invited editors to a demonstration of cylinder deactivation (CDA) and active decompression technology (ADT) in action on an in-cab display while driving on a test track. Engine makers will have ...

Eaton announced its Vehicle Group has demonstrated cylinder deactivation (CDA) as an effective technology for meeting future global emissions requirements for diesel-engine powered commercial vehicles ...

Cummins reports that its Jacobs cyinder deactivation system boosts heavy truck fuel economy by almost 3% in on-highway testing. Cummins Valvetrain Technologies reports positive results from further on ...

If there's one bit of car tech that sounds like a contradiction, it's cylinder deactivation. (And no, we're not suggesting filling up some of the cylinders with super glue — that would lead to a ...

How does cylinder deactivation work? When not needed, the system shuts down fuel supply to the cylinders not being used and closes the valves. There are two ways to accomplish this: 1) rocker arm ...