1概述如果说长期以来困扰人类的重大问题是粮食、水和疾病,那么,现在还应该加上能源问题。作为生产、生活不可缺少的交通工具——汽车的发展,使得石油危机越来越严重。因此,汽车节能和节能汽车受到世界各国政府的重视,出台了一系列法律法规,以限制石油的过度消耗,同时也制定了 1 Overview If major issues that have long plagued humans are food, water and disease, then the issue of energy should now be added. As an indispensable means of production and daily life, the development of automobiles made the oil crisis worse and worse. Therefore, automobile energy-saving and energy-saving vehicles are valued by governments of all countries in the world and a series of laws and regulations have been promulgated to limit the excessive consumption of petroleum and also to formulate