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減震器(Absorber) ,shiyonglaiyizhidanhuangxizhenhoufandanshidezhendangjilaizilumiandechongji。guangfanyongyuqiche,weijiasuchejiayucheshenzhendongdeshuaijian,yigaishanqichedexingshipingshunxing。zaijingguobupinglumianshi,suiranxizhendanhuangkeyiguolvlumiandezhendong,dandanhuangzishenhaihuiyouwangfuyundong,erjianzhenqijiushiyonglaiyizhizhezhongdanhuangtiaoyuede。
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。
減jian震zhen器qi與yu彈dan性xing元yuan件jian承cheng擔dan著zhe緩huan衝chong擊ji和he減jian震zhen的de任ren務wu,阻zu尼ni力li過guo大da,將jiang使shi懸xuan架jia彈dan性xing變bian壞huai,甚shen至zhi使shi減jian震zhen器qi連lian接jie件jian損sun壞huai。因yin而er要yao調tiao節jie彈dan性xing元yuan件jian和he減jian震zhen器qi這zhe一yi矛mao盾dun。
(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。