Exhaust Brakes
Jacobs Exhaust Brake® provides additional vehicle braking power by restricting the flow of exhaust gases and increasing backpressure to the engine. The exhaust brake can be used alone or in conjunction with other Jacobs® braking technologies.
Jacobs Exhaust Brake
Ideal for light- and medium-performance applications
Combine with a Jacobs bleeder brake
Jacobs Engine Brakes® and Exhaust Brakes have provided drivers with increased braking performance for decades and the technologies continue to evolve. Today, these technologies even help to reduce emissions. This was first accomplished with variable valve actuation, then with cylinder deactivation, and now with exhaust throttling to help meet emissions regulations. Jacobs has adapted its long-standing, robust exhaust brake technology for thermal management use for modern commercial vehicle engines, while still retaining its well-known capability as a retarding device.
How Jacobs Brake Works
The Jacobs® exhaust throttle works by actuating a flap downstream of the turbo to increase backpressure.
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Thermal management
that effectively increases the workload on the engine and reduces mass flow through the exhaust to increase the enthalpy applied to the catalyst
to significantly reduce the engine's nitrogen oxide (NOx) output
Def-resistant systems
available for dual dosing applications where the diesel exhaust fluid (DEF) has not fully decomposed before it comes into contact with the throttle
Use as a fast warm-up or keep-it-warm device
The Jacobs Exhaust Brake® works well for thermal management by increasing the enthalpy applied to the aftertreatment catalyst(s). Next-generation aftertreatment systems can include a dual dosing strategy with a diesel exhaust fluid (DEF) injector located as close to the turbo as possible. This makes it difficult to use an exhaust brake because the DEF will not be fully decomposed by the time it contacts the throttle. Our innovative DEF corrosion-resistant exhaust throttle can be used in these systems without function degradation.
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