Create a free Commercial Carrier Journal account to continue reading

Watch: Jacobs demonstrates cylinder deactivation and active decompression technology

Quimby Mug Bayou Florida Headshot
Updated Dec 1, 2022

Jacobs reports that CDA, equipped with Dynamic Skip Fire software from Tula Technology, can cut fuel consumption by up to 25% while slashing NOx 77% and carbon dioxide by 13%.

A display screen inside the LT625 shows when CDA activates and deactivates engine cylinders as the driver accelerates and decelerates the truck at the Thompson Speedway Motorsports Park in Thompson, Connecticut. 

Jacobs Tula cylinder deactivation demonstration International LTThe display screen showing how Jacobs Vehicle Systems' cylinder deactivation shuts down all six engine cylinders. The fuel-saving measure also slashes emissions.Commercial Carrier Journal

“You can see when we’re decelerating, we have zero cylinders active,” Justin Baltrucki, principal engineer at Jacobs Vehicle Systems, explains as he takes his foot off the pedal when driving the truck towards a turn.