Uninzi lweenjini zanamhlanje eziqhutywa ngamatsheyini zisebenzisa i-hydraulic tensioners.Yonke into malunga ne-hydraulic tensioners, uyilo lwabo olukhoyo kunye neempawu zomsebenzi, kunye nokukhetha okuchanekileyo kunye nokutshintshwa kwezi zixhobo - funda inqaku elicetywayo kwisiza.
Yintoni i-hydraulic timing chain tensioner?
I-Hydraulic timing tensioner (i-hydraulic chain tensioner) yiyunithi encedisayo ye-chain drive yendlela yokuhambisa igesi;i-cylinder ye-hydraulic yoyilo olukhethekileyo olubonelela ngokuyimfuneko kubukhulu kunye nokuqhubekayo ngexesha (elizimeleyo kwiimeko zangoku zeqondo lokushisa, imithwalo kunye nokugqoka kweengxenye) ukuphazamiseka kwekhonkco.
I-chain drive ye-camshaft isasasazeka, ngenxa yokuthembeka kwayo kunye nokuchasana nemithwalo ephezulu.Nangona kunjalo, ikhonkco ixhomekeke kukwandiswa kwe-thermal (njengoko yenziwe ngetsimbi), kwaye ngokuhamba kwexesha igugile kwaye ilula - konke oku kukhokelela ekutshintsheni ukuphazamiseka kwekhonkco, okubonakaliswa ngokunyuka kwee-vibrations kunye nengxolo. , yaye ekugqibeleni kusenokuphumela ekutyibilikeni ngamazinyo eenkwenkwezi, ukutshintsha izigaba nokutshabalalisa amalungu ngamanye.Zonke ezi ngxaki zisonjululwa ngokusebenzisa isixhobo esikhethekileyo - i-hydraulic chain tensioner.
I-hydraulic tensioner yenza imisebenzi emibini ebalulekileyo:
● Ukugcinwa okuzenzekelayo kokuphazamiseka kwetsheyini xa linxityiwe naxa litsalwa;
● Ukudambisa ukungcangcazela kwesebe lesekethe ngexesha lokusebenza kwe-injini.
Ukusetyenziswa kwesi sixhobo kwenza ukuba kungadingeki ukulungelelanisa ngesandla iqondo lokuphazamiseka kwekhonkco, kunye nokuphelisa imiphumo emibi yokuguga ngokuthe ngcembe kwamacandelo okuqhuba.Kwakhona, ngenxa yoyilo lwayo, i-hydraulic tensioner dampens vibrations kunye ne-vibrations ye-chain, ukunciphisa umthwalo kwiindawo kunye nenqanaba lengxolo yonke yendlela.Isixhobo sokucinezela amanzi esingasebenziyo sinokuba ngumthombo weengxaki, ngoko ke kufuneka sitshintshwe ngokukhawuleza.Kodwa ngaphambi kokuthenga okanye uku-odola i-tensioner ye-hydraulic chain tensioner, kuya kufuneka uqonde uyilo kunye nokusebenza kwezi zixhobo.
Hydraulic Chain TensionerYila i-Hydraulic Chain
Iintlobo, uyilo kunye nomgaqo wokusebenza kwee-hydraulic chain tensioners
Inkqubo yokusebenza ye-spring-hydraulic chain tensioner yeenjini zeVAZ
Ngokomgaqo, zonke i-hydraulic tensioners zanamhlanje zinesakhiwo esifanayo kunye nomgaqo wokusebenza, zihluke kuphela kwiinkcukacha kunye nokusebenza okongeziweyo.Iyunithi iqukethe i-metal cylindrical body, phambi kwayo kukho i-plunger, kwaye ngasemva - i-valve assembly.Umgodi wokusebenza ovaliweyo wenziwa phakathi kweplunger kunye ne-valve assembly.I-plunger yenziwe ngendlela ye-cylinder engenanto ehamba kunye nomzimba, ilayishwe entwasahlobo, kwindawo yayo yangaphambili kukho indawo yokumisa kwisihlangu okanye i-lever ene-chain tensioner sprocket.I-plunger ikhuselwe ekutyibilikeni ngaphandle komzimba ngephini okanye isixhobo esikhethekileyo sokutshixa.Indibano yevalvu iphethe ivalve yokukhangela ebekwe kwicala le plunger.Ivalve yenziwe ngebhola elayishwe entwasahlobo evala umjelo wokubonelela ngeoyile.Ibhola inokushukuma kuphela kumngxuma wokusebenza.
Uyilo lweTensioner Ngaphandle kweCavity yokugcina
I-flange enyukayo yenziwa kumzimba we-tensioner, kwaye umngxuma ofakwe intambo ukwabonelelwa ukuba uqhotyoshelwe ityhubhu okanye umbhobho osuka kwi-injini yokuthambisa.Isixhobo sifakwe ecaleni kwekhonkco, i-plunger yayo ixhomekeke kwisihlangu okanye i-sprocket lever, ngenxa yokuba amandla ahanjiswa ngokulinganayo kwikhonkco lexesha.
I-hydraulic tensioner isebenza ngolu hlobo lulandelayo.Xa i-injini iqala, i-oyile yoxinzelelo inikezelwa kwi-valve yokutshekisha kwaye, emva kokunqoba amandla entwasahlobo, inikezelwa kumngxunya osebenzayo.Ngaphantsi kwesenzo soxinzelelo oludaliweyo, i-plunger isuka emzimbeni kwaye iphumle ngokuchasene nesihlangu okanye i-sprocket lever.I-plunger ehambayo idala amandla apho ikhonkco litsalwa khona, kodwa ngaxa lithile ukuphazamiseka kufikelela kwixabiso eliphezulu - uxinzelelo lwe-oyile kwindawo yokusebenza alusekho ngokwaneleyo ukuqhubela phambili kwe-plunger.Ngeli xesha, ikhonkco sele lidala uxinzelelo kwi-plunger, kwaye ngaxa lithile uxinzelelo lweoyile kwindawo yokusebenza lufaniswa noxinzelelo lweoyile evela kwinkqubo yokuthambisa i-injini - oku kukhokelela ekuvalweni kwevalve yokujonga.Ngale ndlela, ioyile itshixiwe kwindawo yokusebenza, i-plunger ayisakwazi ukuhamba, ikhonkco lihlala likwindawo eqinileyo.Xa i-motor iyeka, i-tensioner enjalo ihlala kwindawo yokusebenza, ukuthintela ukuphazamiseka kwekhonkco ukuba buthathaka.
Ngokuthe ngcembe, ikhonkco lexesha liyatsalwa, nto leyo ekhokelela ekunciphiseni koxinzelelo olwenziwa yilo kwiplunger.Ngexesha elithile, uxinzelelo kwindawo yokusebenza luba ngaphantsi koxinzelelo oluvela kwi-injini ye-lubrication system - oku kukhokelela ekuvuleni i-valve yokukhangela kunye nokuphinda zonke iinkqubo ezichazwe ngasentla.Ngaphantsi kwesenzo soxinzelelo lweoyile, i-plunger yandisa kancinci ukusuka kwizindlu kwaye ihlawulela ukolula kwekhonkco, xa ukuphazamiseka kwekhonkco kufikelela kwixabiso elifunekayo kwakhona, i-valve yokukhangela iya kuvala.
Kufuneka kuqatshelwe ukuba ngexesha lokusebenza kwe-injini, i-tensioner isebenza njenge-damper - i-oyile evaliweyo kwindawo yokusebenza ithatha ngokuyinxenye izothuso kunye nokungcangcazela kwekhonkco kudluliselwe kwi-plunger.Oku kunciphisa ingxolo yokuqhuba kwaye kwandisa ubomi beendawo zayo.
Namhlanje, kukho uhlengahlengiso oluninzi lwe-hydraulic tensioners yekhonkco, eyahlukileyo kwezinye izinto zoyilo.
I-Hydraulic tensioners enendawo yokugcina indawo.Kwizixhobo ezinjalo, kukho enye imbobo emva kwendibano yevalve, apho kukho inani elincinci leoli - oku kuphucula ukusebenza kwendlela yoxinzelelo lwekhonkco kwiimodyuli ze-injini ezidlulayo nakwezinye iimeko.Kwakhona, umngxuma omncinci wenziwa kumngxuma ogcinelwe ukopha, othintela i-oyile ukuba ingangeni emoyeni kumngxuma osebenzayo.
I-Hydraulic tensioners enesixhobo sokutshixa iplunger esekwe kwiringi yokutshixa kunye nemijelo.Kwizixhobo ezinjalo, i-grooves ye-annular yenziwa ngaphakathi kwimeko, ebekwe kumgama othile ukusuka komnye nomnye, kwaye indandatho yokugcina ibekwe kwi-plunger.Xa i-plunger ishukuma, umsesane ogcinayo utsiba ukusuka kwi-groove ukuya kwi-groove, efezekisa ukufakwa kwenxalenye kwindawo esisigxina.
I-Hydraulic tensioners ene-bypass throttle (i-oyile yokukhupha kwi-system).Kwezo zixhobo, indibano yevalve ine-throttle (umngxuma omncinci wedayamitha), oqinisekisa ukuba i-oyile ikhutshiwe kumngxuma wokusebenza ibuyele kwinkqubo yokuthambisa i-injini.Ubukho be-throttle buphucula iimpawu ezidambisayo ze-tensioner kwaye zivumela i-plunger ukuba ingaqhubeli phambili kuphela, kodwa kunye nokutshona ngokuyinxenye emzimbeni kunye nokunyuka kwexesha elifutshane kwi-chain tension.
Namhlanje, zonke ezi zixhobo zisetyenziswa kwiinjini.Ngokuqhelekileyo, i-tensioner enye ye-hydraulic iqinisekisa ukusebenza okuqhelekileyo kwekhonkco enye kuphela, ngoko ke i-tensioner enye isetyenziswa kwiimotor ngekhonkco lexesha elinye, kwaye ezimbini ngamatyathanga amabini.Amacandelo angabonelelwa ngokwahlukileyo okanye ahlanganiswe kunye neebakaki, izicathulo kunye nezinye izixhobo ezincedisayo.Abaninzi be-tensioners baxhotyiswe ngetshekhi ekhuselayo evimbela ukwandiswa okuzenzekelayo kwe-plunger ngexesha lokuthutha, le tshekhi iyasuswa xa inxalenye ifakwe kwi-motor.Kukho ezinye izicwangciso, kodwa ngokubanzi zisebenza ngendlela echazwe ngasentla, zihluke kuphela kwiinkcukacha ezithile.
Indlela yokukhetha kunye nokubuyisela ikhonkco lexesha le-hydraulic tensioner
I-hydraulic tensioner ixhomekeke kwimithwalo ebalulekileyo, ngoko ke ekuhambeni kwexesha inokulahlekelwa ukuxinwa okanye ukungaphumeleli ngenxa yokuphulwa kwevalve, intwasahlobo kunye nezinye iindawo.Ukungasebenzi kakuhle kwale nxalenye kubonakaliswa ingxolo eyandisiweyo ye-timing chain drive, kwaye ekuhlolweni ngokuthe ngqo (okufuna ukuchithwa kwenxalenye ye-injini), ifunyanwe ngokunciphisa ikhonkco, ukungashukumi okanye, ngokuchaseneyo, ukuhamba ngokukhululekileyo kwe-plunger. .I-tensioner enesiphene kufuneka itshintshwe ngokukhawuleza.
Inxalenye yokutshintshwa yohlobo olufanayo kunye nemodeli efakwe ngaphambili (inqunywe yinombolo yekhathalogu) kufuneka ithathwe.Ukusetyenziswa kohlobo olwahlukileyo lwe-hydraulic tensioner kunokubangela ukuphazamiseka okwaneleyo okanye okugqithisileyo kwekhonkco kunye nokuwohloka kwe-drive yonke.Ke ngoko, isixhobo "esingesomthonyama" kufuneka sifakwe kuphela kwiimeko apho sihambelana ngqo ne "native" ngokweempawu.
I-Hydraulic chain tensioner enesixhobo sokutshixa iplunger kunye ne-oyile reverse drain
Umsebenzi wokulungisa kufuneka wenziwe ngokuhambelana nemiyalelo ye-injini.Ngesiqhelo, ukubuyisela i-tensioner, kufuneka ufikelele kwi-timing drive (efuna ukususa isigqubuthelo se-injini yangaphambili, kwaye ngamanye amaxesha uphumeze uqhaqho olubi kakhulu lweyunithi), kwaye ngokulula ukhulule iibholiti ezimbini ezibambe le ndawo.Emva koko i-tensioner entsha ifakwe endaweni yayo, kwaye, ukuba kuyimfuneko, iindawo ezongezelelweyo (i-gaskets, izitywina, iindawo eziphakathi phakathi kwe-plunger kunye nesihlangu / i-lever ye-sprocket yoxinzelelo, njl.).I-tensioner entsha akufanele izaliswe ngeoli, kwaye i-plunger yayo ayifanele yandiswe ngesandla, ngaphandle koko isixhobo asinakubonelela ngokuphazamiseka kwekhonkco elifunekayo emva kokuqalisa injini.Emva kokutshintsha inxalenye, khangela inqanaba leoli kwi-lubrication system kwaye, ukuba kuyimfuneko, yizise ngokuqhelekileyo.
Ekuqaleni kwemoto emva kokulungiswa, ingxolo yekhonkco iya kuvakala ukusuka kwicala lokuqhuba, kodwa emva kwemizuzwana embalwa - xa indawo yokusebenza ye-tensioner igcwele kwaye i-plunger ikwindawo yokusebenza - kufuneka iphele. .Ukuba ingxolo ayipheli, ke ukufakwa kwenxalenye ayilunganga okanye kukho ezinye izinto ezingalunganga.Ngokukhetha okuchanekileyo kunye nokutshintshwa kwe-tensioner ye-hydraulic, ikhonkco iya kuhlala inokuphazamiseka okulungileyo, kwaye ixesha lemoto liya kusebenza ngokuzithemba kuzo zonke iindlela.
Ixesha lokuposa: Jul-13-2023