Jacobs Develops High Power Density Engine Brake Technology

Jacobs Vehicle Systems announced that it has developed the next generation of engine braking technology. This all new technology is said to delivers 50 percent more power than traditional compression release braking product and has been designated HPD, high power density.

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 the company.

Traditional engine brake technology provides up to 100 percent of the engine’s rated power. The new  HPD engine brake claims to 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 also can maximize the performance of large displacement engines for applications requiring additional retarding performance.

The braking system 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 is said to provide for even stronger braking power at the low-mid range engine speeds, providing greater vehicle control, drivability and improved fuel economy.