Jacobs Vehicle Systems has made improvements to its engine brake technology. The company’s new improvements are said to deliver 50 percent more power than the traditional compression release braking product and have been designated HPD to recognize the difference from traditional compression release technology.
According to Jacobs, HPD was created in response to the global engine suppliers’ drive to provide higher power density engines for fuel economy. The new technology is said to provide large displacement retarding power in small and medium displacement engines.
Traditional engine brake technology provides up to 100 percent of the engine’s rated power, and the new Jacobs’ HPD Engine Brake is said to provide up to 150 percent of the engine’s rated power and reduce loads on the valve train.
The braking system consists of two dedicated braking rocker arms and two collapsible bridges per cylinder. Jacobs says this configuration enables a second braking event to occur during each engine cycle. This new braking process is also said to provide for even stronger braking power at low-mid range engine speeds, providing greater vehicle control, drivability and improved fuel economy.
