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2.测量方法:Ⅰ整车尺寸汽车整车尺寸参数必须在不平度不超过±3毫米的水平、硬实、光滑的平地上测量。测量结果的误差一般不应超过±2毫米。测量步骤如下:(1)确定车轮中心。予先在各车轮中心凸出部分(无凸出部分者予先装上可划线的凸出装置)用划针求出旋转中心。(2)汽车驶入场地。汽车缓缓驶入测量场地,检查并纠正转向车轮是否处于中间位置。(3)印车轮印迹。在每个轮胎前方下部表面均匀涂以墨汁,再将汽车缓缓向前推进,使涂有墨汁的部分接触地面。
2. Measurement methods: Ⅰ vehicle size vehicle size parameters must not exceed ± 3 mm unevenness level, hard, smooth and flat ground measurements. The error of the measurement results should not exceed ± 2 mm. Measurement steps are as follows: (1) to determine the wheel center. The center of rotation should be obtained by using a stylus at the protruding portion of the center of each wheel (the protruding portion without protrusion is preliminarily fitted with a scribing projection). (2) car into the venue. The car slowly into the measurement site, check and correct steering wheel is in the middle position. (3) printed wheel marks. In front of each tire, the lower surface is evenly coated with ink, and then the car is slowly pushed forward so that the ink-coated portion touches the ground.