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減震器(Absorber) ,是shi用yong來lai抑yi製zhi彈dan簧huang吸xi震zhen後hou反fan彈dan時shi的de震zhen蕩dang及ji來lai自zi路lu麵mian的de衝chong擊ji。廣guang泛fan用yong於yu汽qi車che,為wei加jia速su車che架jia與yu車che身shen振zhen動dong的de衰shuai減jian,以yi改gai善shan汽qi車che的de行xing駛shi平ping順shun性xing。在zai經jing過guo不bu平ping路lu麵mian時shi,雖sui然ran吸xi震zhen彈dan簧huang可ke以yi過guo濾lv路lu麵mian的de震zhen動dong,但dan彈dan簧huang自zi身shen還hai會hui有you往wang複fu運yun動dong,而er減jian震zhen器qi就jiu是shi用yong來lai抑yi製zhi這zhe種zhong彈dan簧huang跳tiao躍yue的de。
懸(xuan)架(jia)係(xi)統(tong)中(zhong)由(you)於(yu)彈(dan)性(xing)元(yuan)件(jian)受(shou)衝(chong)擊(ji)產(chan)生(sheng)震(zhen)動(dong),為(wei)改(gai)善(shan)汽(qi)車(che)行(xing)駛(shi)平(ping)順(shun)性(xing),懸(xuan)架(jia)中(zhong)與(yu)彈(dan)性(xing)元(yuan)件(jian)並(bing)聯(lian)安(an)裝(zhuang)減(jian)震(zhen)器(qi),為(wei)衰(shuai)減(jian)震(zhen)動(dong),汽(qi)車(che)懸(xuan)架(jia)係(xi)統(tong)中(zhong)采(cai)用(yong)減(jian)震(zhen)器(qi)多(duo)是(shi)液(ye)力(li)減(jian)震(zhen)器(qi),其(qi)工(gong)作(zuo)原(yuan)理(li)是(shi)當(dang)車(che)架(jia)(或車身)和he車che橋qiao間jian震zhen動dong而er出chu現xian相xiang對dui運yun動dong時shi,減jian震zhen器qi內nei的de活huo塞sai上shang下xia移yi動dong,減jian震zhen器qi腔qiang內nei的de油you液ye便bian反fan複fu地di從cong一yi個ge腔qiang經jing過guo不bu同tong的de孔kong隙xi流liu入ru另ling一yi個ge腔qiang內nei。此ci時shi孔kong壁bi與yu油you液ye間jian的de摩mo擦ca和he油you液ye分fen子zi間jian的de內nei摩mo擦ca對dui震zhen動dong形xing成cheng阻zu尼ni力li,使shi汽qi車che震zhen動dong能neng量liang轉zhuan化hua為wei油you液ye熱re能neng,再zai由you減jian震zhen器qi吸xi收shou散san發fa到dao大da氣qi中zhong。在zai油you液ye通tong道dao截jie麵mian和he等deng因yin素su不bu變bian時shi,阻zu尼ni力li隨sui車che架jia與yu車che橋qiao(或車輪)之間的相對運動速度增減,並與油液粘度有關。
jianzhenqiyudanxingyuanjianchengdanzhehuanchongjihejianzhenderenwu,zuniliguoda,jiangshixuanjiadanxingbianhuai,shenzhishijianzhenqilianjiejiansunhuai。yineryaotiaojiedanxingyuanjianhejianzhenqizheyimaodun。
(1) 在壓縮行程(車橋和車架相互靠近),減震器阻尼力較小,以便充分發揮彈性元件的彈性作用,緩和衝擊。這時,彈性元件起主要作用。
(2) 在懸架伸張行程中(車橋和車架相互遠離),減震器阻尼力應大,迅速減震。
(3) 當車橋(或車輪)與車橋間的相對速度過大時,要求減震器能自動加大液流量,使阻尼力始終保持在一定限度之內,以避免承受過大的衝擊載荷。
在(zai)汽(qi)車(che)懸(xuan)架(jia)係(xi)統(tong)中(zhong)廣(guang)泛(fan)采(cai)用(yong)的(de)是(shi)筒(tong)式(shi)減(jian)震(zhen)器(qi),且(qie)在(zai)壓(ya)縮(suo)和(he)伸(shen)張(zhang)行(xing)程(cheng)中(zhong)均(jun)能(neng)起(qi)減(jian)震(zhen)作(zuo)用(yong)叫(jiao)雙(shuang)向(xiang)作(zuo)用(yong)式(shi)減(jian)震(zhen)器(qi),還(hai)有(you)采(cai)用(yong)新(xin)式(shi)減(jian)震(zhen)器(qi),它(ta)包(bao)括(kuo)充(chong)氣(qi)式(shi)減(jian)震(zhen)器(qi)和(he)阻(zu)力(li)可(ke)調(tiao)式(shi)減(jian)震(zhen)器(qi)。