Jacobs unveils High Power Density engine brake technology

Jacobs Vehicle Systems announced that it has developed what it calls the next generation of engine braking technology. According to the company, this all-new technology delivers 50 percent more power than traditional Compression Release Braking product and has been designated “HPD” to recognize the difference from traditional compression release technology.

In response to the global engine suppliers’ drive to provide higher power density engines for fuel economy, Jacobs’ engineers developed HPD. This new technology provides large displacement retarding power in small and medium displacement engines.

According to Jacobs, traditional engine brake technology provides up to 100 percent of the engine’s rated power. The new Jacobs’ HPD Engine Brake can provide up to 150 percent of the engine’s rated power, while also reducing loads on the valve train. Originally designed for smaller displacement engines used in heavy duty applications, HPD can also maximize the performance of large displacement engines for applications requiring additional retarding performance.

The braking system, which will be launched globally at the Engine Expo in Stuttgart, Germany on May 17th, consists of two dedicated braking rocker arms and two collapsible bridges per cylinder. This configuration enables a second braking event to occur during each engine cycle, by deactivating the main intake and exhaust events via the collapsible bridges and actuating the two braking rockers to provide optimal braking. This new braking process provides for even stronger braking power.