Reduce noise engine compression release braking

A number of engine operating strategies have been developed that allow for engine braking when combustion is not needed. In these strategies, air within the engine cylinder is compressed by the cylinder piston; however, rather than introducing fuel into the cylinder to facilitate a combustion event, the cylinder is opened to an exhaust manifold and the compressed air is vented, and the energy is released by the engine. However, it has been learned that the venting of this compressed air from the engine can produce undesirable noise emissions. Thus, the present invention employs a dual exhaust valve lift strategy to reduce noise produced during engine braking while still allowing relatively high engine braking horsepowers to be achieved.