原帖由 老杨 于 2007-8-8 07:34 发表 0 H- A w3 i5 W; I. E1、省油 # A8 m9 E, C8 b' f. @1 y$ w) W
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 ...
- t% z; z* n. `$ c5 ^8 H0 k6 V. N: i( j$ U- Z: S- h/ ^- M
You 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.