原帖由 老杨 于 2007-8-8 07:34 发表 & h. |# D5 n2 g2 T2 ?4 q1、省油 1 t6 Q! v1 @2 v. J" d
平均每个铝合金轮毂比相同尺寸的钢轮毂轻2kg,一台轿车用5个便省了不起10kg重量。根据日本实验,5座的轿车重量每减轻1kg,一年约或节省20L汽油。而美国汽车工程师学会发表的研究报告指出,铝合金轮毂 ...
' K9 |, K# X* ?, i* q C - T$ t+ b" S% G z, C. NYou forgot to distinguish the difference between mounted mass and unmounted mass. The 2kg advantage is much more than it sounds, since it's unmounted mass.