製動係統發展趨勢
已經普遍應用的液壓製動現在已經是非常成熟的技術,隨著人們對製動性能要求的提高,防抱死製動係統、驅動防滑控製係統、電子穩定性控製程序、主(zhu)動(dong)避(bi)撞(zhuang)技(ji)術(shu)等(deng)功(gong)能(neng)逐(zhu)漸(jian)融(rong)人(ren)到(dao)製(zhi)動(dong)係(xi)統(tong)當(dang)中(zhong),需(xu)要(yao)在(zai)製(zhi)動(dong)係(xi)統(tong)上(shang)添(tian)加(jia)很(hen)多(duo)附(fu)加(jia)裝(zhuang)置(zhi)來(lai)實(shi)現(xian)這(zhe)些(xie)功(gong)能(neng),這(zhe)就(jiu)使(shi)得(de)製(zhi)動(dong)係(xi)統(tong)結(jie)構(gou)複(fu)雜(za)化(hua),增(zeng)加(jia)了(le)液(ye)壓(ya)回(hui)路(lu)泄(xie)漏(lou)的(de)可(ke)能(neng)以(yi)及(ji)裝(zhuang)配(pei)、維wei修xiu的de難nan度du,製zhi動dong係xi統tong要yao求qiu結jie構gou更geng加jia簡jian潔jie,功gong能neng更geng加jia全quan麵mian和he可ke靠kao,製zhi動dong係xi統tong的de管guan理li也ye成cheng為wei必bi須xu要yao麵mian對dui的de問wen題ti,電dian子zi技ji術shu的de應ying用yong是shi大da勢shi所suo趨qu。
從製動係統的供能裝置、控製裝置、傳動裝置、製動器4個組成部分的發展曆程來看,都不同程度地實現了電子化。人作為控製能源,啟動製動係統,發出製動企圖;製動能源來自儲存在蓄電池或其它供能裝置;采用全新的電子製動器和集中控製的電子控製單元(ECU)進(jin)行(xing)製(zhi)動(dong)係(xi)統(tong)的(de)整(zheng)體(ti)控(kong)製(zhi),每(mei)個(ge)製(zhi)動(dong)器(qi)有(you)各(ge)自(zi)的(de)控(kong)製(zhi)單(dan)元(yuan)。機(ji)械(xie)連(lian)接(jie)逐(zhu)漸(jian)減(jian)少(shao),製(zhi)動(dong)踏(ta)板(ban)和(he)製(zhi)動(dong)器(qi)之(zhi)間(jian)動(dong)力(li)傳(chuan)遞(di)分(fen)離(li)開(kai)來(lai),取(qu)而(er)代(dai)之(zhi)的(de)是(shi)電(dian)線(xian)連(lian)接(jie),電(dian)線(xian)傳(chuan)遞(di)能(neng)量(liang),數(shu)據(ju)線(xian)傳(chuan)遞(di)信(xin)號(hao),所(suo)以(yi)這(zhe)種(zhong)製(zhi)動(dong)又(you)叫(jiao)做(zuo)線(xian)控(kong)製(zhi)動(dong)。這(zhe)是(shi)自(zi)從(cong)ABS在汽車上得到廣泛應用以來製動係統又一次飛躍式發展。
電dian液ye複fu合he製zhi動dong係xi統tong是shi從cong傳chuan統tong製zhi動dong向xiang電dian子zi製zhi動dong的de一yi種zhong有you效xiao的de過guo渡du方fang案an,采cai用yong液ye壓ya製zhi動dong和he電dian製zhi動dong兩liang種zhong製zhi動dong係xi統tong。這zhe種zhong製zhi動dong係xi統tong既ji應ying用yong了le傳chuan統tong的de液ye壓ya製zhi動dong係xi統tong以yi保bao證zheng足zu夠gou的de製zhi動dong效xiao能neng和he安an全quan性xing,又you利li用yong再zai生sheng製zhi動dong電dian機ji回hui收shou製zhi動dong能neng量liang和he提ti供gong製zhi動dong力li矩ju,提ti高gao汽qi車che的de燃ran料liao經jing濟ji性xing,同tong時shi降jiang低di排pai放fang,減jian少shao汙wu染ran。但dan是shi由you於yu兩liang套tao製zhi動dong係xi統tong同tong時shi存cun在zai,結jie構gou複fu雜za、成本偏高。結構的複雜性也增加了係統失效和出現故障的可能性,維護和保養難度增加。
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