Study on the backing velocity of the vacuum booster 汽車真空助力器回程速度的研究
The double air regulator to control riveting speed effectively 氣路加裝雙向調節閥,有效控制鉚接速度和回程速度。
( 2 ) in the original system because of the area between the piston and the piston pole is too small , the system pressure will rise when in the return stroke . and the reliever valve will open . the return velocity will reduce ( 2 )原設計中,由于活塞和活塞桿的面積差很小,回程上行時,系統壓力會迅速升高造成溢流閥的溢流而使回程速度降低,從而降低了系統的工作效率。