At present, WEICHAI truck engines, with the displacement ranging from 2.3L to 15.33L and the power ranging from 70kW to 485kW, meet Euro II, Euro V, Euro Ⅵ and other emission standards, and are applicable to tractors, medium/heavy-duty dump trucks, medium/heavy-duty trucks, medium/heavy-duty special vehicles, light-duty trucks, light-duty dump trucks, and light-duty special vehicles. These engines are characterized by high reliability, strong power, fuel saving and environmental protection.