To absorb energy, the Diamond Logic® engine brake combines bleeding off compressed intake air, VGT
controlling exhaust back pressure, and vehicle driven piston movement.
• Energy is absorbed during the compression stroke, when intake air is compressed and forced through a slightly open exhaust valve, providing compressed air flow to the VGT.
• VGT turbine vanes create the desired energy absorbing, back pressure and intake boost.
• At the top of the compression stroke energy dissipates, pressure to force the piston down is eliminated, and energy is absorbed by the vehicle drive pulling the piston down.
