一般情况,新车出厂有个规矩,就是必须以限定速度跑完一定的公里数,俗称“磨合”。通常是以时速40至50公里的速度跑够2千公里,使活塞与汽缸的接触面磨擦得更圆滑,其它机件各部位也得到有效磨合以后,才能放开速度大胆行驶。为了确保这一规定的落实,除了对司机进行必要的教育之外,有关部门还专门研制出子限速器安装在新车上,致使 In general, the new car factory rules, that is, must run at a limited speed of a certain number of kilometers, commonly known as “run-in.” Usually running at a speed of 40 to 50 kilometers per hour for 2 thousand kilometers, so that the contact surface between the piston and the cylinder is smoothed more smoothly. After the other parts are also effectively run-in, the vehicle can be driven boldly. In order to ensure the implementation of this provision, in addition to educating drivers on the need, the relevant departments have also specially developed sub-speed limiters to be installed on new cars, resulting in