Engine Braking and Valvetrain Technology

From inventing compression release technology to developing next-generation valvetrains and advanced engine braking systems, we are continually raising the levels of performance—for power, fuel economy, and reduced emissions—that commercial vehicles can achieve.

Trucks in desert
The Jake Brake has a new home

Since the Jake Brake® was introduced in 1961, we have been a partner in the trucking industry’s quest for safe, reliable, and efficient commercial vehicles. Today, over 10 million Jake Brakes have been sold globally, and now the Jacobs Engine Brake® has a new home at Cummins. As part of the Cummins family, we will continue to supply you with industry-leading engine brakes as well as advanced valvetrain technologies to assist in meeting current and upcoming emission regulations.

Engine Braking

We lead the way in designing, testing, and manufacturing high-performing engine brakes for engine OEMs around the world. From Exhaust Brakes to High Power Density® Engine Brakes, we have a solution for your engine and vehicle application.

Jacobs High Power Density® technology is the lightest, most cost-effective, high-power vehicle retarding technology available.
The Jacobs® Compression Release Engine Brake reduces foundation brake load by turning your engine into a power absorbing air compressor.
Jacobs® Lashless Technology improves performance and efficiency while eliminating the need to adjust valve lash.
Jacobs® Bleeder Brake technology offers a braking solution for applications on smaller displacement engines when cost and packaging is a consideration.
Jacobs Exhaust Brake® provides additional vehicle braking power by restricting the flow of exhaust gases and increasing back pressure to the engine.

Valvetrain Solutions

Our advanced valvetrain technologies help OEMs around the world meet regulations by optimizing the engine and aftertreatment systems to improve emissions, fuel economy, and exhaust thermal management.

Valvetrain Solutions
Jacobs® Cylinder Deactivation (CDA) helps achieve stringent NOx and fuel economy standards, even during extended low load cycles.
Jacobs® 2-Step VVA meets future transient emissions and fuel economy targets with minimal change to the base engine and aftertreatment system.
Jacobs® Variable Valve Actuation and control systems bring you an entire suite of solutions to help achieve performance, fuel economy, and emissions targets. This can range from fully-flexible valvetrains to very specific, targeted variability.
Jacobs ADT® allows drivers to experience smoother start-ups with faster starting times and engine shutdown without engine-induced cabin vibration.
The Journey Continues

Year after year, we provide commercial vehicle OEMs around the world with engine braking and valve actuation advances that help them put market-leading trucks on the road.

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