X15D is an efficient Euro VI power engine developed by Cummins along with the global market, featuring high horsepower and low fuel consumption required by the market. With a horsepower range of 560-660PS and a specific fuel consumption of 176g/kW·h, its fuel economy is comprehensively improved, and its power transmission chain is optimized to the maximum extent, realizing lower fuel consumption at the same speed and a faster speed at the same fuel consumption.