ISG 2017 engines and X12 engine brakes are the latest generation of in-cylinder brake technology. The compression of the cylinder is achieved through the precise electronically controlled hydraulic device integrated in the rocker arm. Compression braking is an auxiliary system. Dynamic function. Engine Brake Operation Condition The engine brake technology is integrated with the compression brake through the exhaust rocker arm. It does not inject fuel into the cylinder. It opens the exhaust valve at the end of the compression stroke, eliminating the rebound of the compressed gas energy and increasing the engine brake. The efficiency of the car provides an additional 370 hp extra powerful braking force, 50% more efficiency than the exhaust brake, and a safer brake. iBrake is particularly suitable for downhill, cornering, and high speed exits to easily control the speed and prevent braking System overheating causes braking failure. Engine braking can effectively help the driver.