According to data from the China Association of Automobile Manufacturers, from January to November this year, the cumulative sales of automotive diesel engines were 2,578,400 units, a cumulative increase of 10.02% year-on-year. Diesel engine companies such as Weichai, Yunnei Power and Anhui Jianghuai also changed their previous decline, and the market sales were gratifying . Since the beginning of this year, the domestic diesel engine market has been affected by the improvement of the coal market and the national high-limit and high-load limit policies. In this regard, industry sources believe that the automotive diesel engine market has bottomed out, but will not rebound significantly, and steady growth will be the main tone in the next few years.