尚未引人注意的小型化发动机(Downsizing Engine)正在成为一个新的发展趋势。为了适应越来越严苛的燃油经济性限值和排放法规,在常规化石燃料汽车中,小型化发动机是唯一出路。但小型化发动机并非简单的减低排量。关键要通过提高升功率、升扭矩来实现“小马拉大车”的功能。 The unobtrusive Downsizing Engine is emerging as a new trend. To meet the increasingly stringent fuel economy limits and emissions regulations, miniaturized engines are the only way out of conventional fossil fuel vehicles. However, the miniaturization of the engine is not simply to reduce emissions. The key is to increase the power, torque rise to achieve “small horse cart” function.