目前汽车工业可持续发展面临着两大难题,即环境污染和石油资源匮乏,所以环保和节能是21世纪汽车技术发展的一个重要方向。随着国家新的排放法规的日趋严格,具有低污染和低油耗优点的油电混合动力汽车将会成为汽车产业的重点发展对象。 Currently, the sustainable development of automobile industry faces two major problems, namely, environmental pollution and lack of oil resources. Therefore, environmental protection and energy saving are an important direction for the development of automobile technology in the 21st century. As the state’s new emission laws and regulations become more stringent, with low pollution and low fuel consumption advantages of hybrid electric vehicles will become the focus of the development of the automotive industry.