它由液壓控製,主要零部件有製動盤、分泵、製動鉗、油you管guan等deng。製zhi動dong盤pan用yong合he金jin鋼gang製zhi造zao並bing固gu定ding在zai車che輪lun上shang,隨sui車che輪lun轉zhuan動dong。分fen泵beng固gu定ding在zai製zhi動dong器qi的de底di板ban上shang固gu定ding不bu動dong。製zhi動dong鉗qian上shang的de兩liang個ge摩mo擦ca片pian分fen別bie裝zhuang在zai製zhi動dong盤pan的de兩liang側ce。分fen泵beng的de活huo塞sai受shou油you管guan輸shu送song來lai的de液ye壓ya作zuo用yong,推tui動dong摩mo擦ca片pian壓ya向xiang製zhi動dong盤pan發fa生sheng摩mo擦ca製zhi動dong,動dong作zuo起qi來lai**好象用鉗子鉗住旋轉中的盤子,迫使它停下來一樣。
這zhe種zhong製zhi動dong器qi散san熱re快kuai,重zhong量liang輕qing,構gou造zao簡jian單dan,調tiao整zheng方fang便bian。特te別bie是shi高gao負fu載zai時shi耐nai高gao溫wen性xing能neng好hao,製zhi動dong效xiao果guo穩wen定ding,而er且qie不bu怕pa泥ni水shui侵qin襲xi,在zai冬dong季ji和he惡e劣lie路lu況kuang下xia行xing車che,盤pan式shi製zhi動dong比bi鼓gu式shi製zhi動dong更geng容rong易yi在zai較jiao短duan的de時shi間jian內nei令ling車che停ting下xia。有you些xie盤pan式shi製zhi動dong器qi的de製zhi動dong盤pan上shang還hai開kai了le許xu多duo小xiao孔kong,加jia速su通tong風feng散san熱re提ti高gao製zhi動dong效xiao率lv。反fan觀guan鼓gu式shi製zhi動dong器qi,由you於yu散san熱re性xing能neng差cha,在zai製zhi動dong過guo程cheng中zhong會hui**大量的熱量。製動蹄片和輪鼓在高溫影響下較易發生極為複雜的變形,容易產生製動衰退和振抖現象,引起製動效率下降。 
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