“…However, for the "fast-slow" loading strategies with 50% and even bigger 50% CPL (e.g., Strategies 4,5,7,8,10,and 11), the average ratio of fuel consumption, soot and CO in transient process increased to different degrees, and the biggest increase of strategy 11 is 9%, 92.2% and 65.3%, respectively. This is because of the above loading strategies (strategy 4,5,7,8,10,11). Due to the rapid oil supply rate in the early period and the long duration of high speed injection, the AFR in the early transient process decreases rapidly and causes the larger anoxic environment in the cylinder.…”