Umgomo Osebenzayo We-Power Brake Booster

I-vacuum booster isebenzisa isimiso sokumunca umoya lapho injini isebenza, okwenza kube ne-vacuum ohlangothini lokuqala lwe-booster. Ekuphenduleni umehluko wengcindezi yomfutho womoya ojwayelekile ngakolunye uhlangothi, umehluko wengcindezi usetshenziselwa ukuqinisa i-braking thrust.

Uma kukhona ngisho nomehluko omncane wengcindezi phakathi kwezinhlangothi ezimbili ze-diaphragm, ngenxa yendawo enkulu ye-diaphragm, i-thrust enkulu isengakhiqizwa ukusunduza i-diaphragm ekugcineni ngokucindezela okuphansi. Lapho ubhuleka, i-vacuum booster system iphinde ilawule ivacuum engena ku-booster ukwenza i-diaphragm inyakaze, futhi isebenzisa induku yokusunduza ku-diaphragm ukusiza umuntu ukuthi anyathele futhi aphushe i-pedal yebhuleki emshinini wokuthutha ohlangene.

Esimeni sokungasebenzi, isiphethu esibuyayo se-valve push push rod siphusha i-valve push rod endaweni yokukhiya ngakwesokudla, futhi imbobo yevalve yokuvala isesimweni esivulekile. Isiphethu sevalvu yokulawula senza inkomishi yevalvu yokulawula kanye nesihlalo sevalvu yomoya zithintene, ngaleyo ndlela ivale imbobo yevalvu yomoya.

Ngalesi sikhathi, igumbi legesi ye-vacuum kanye negumbi legesi lesicelo le-booster lixhunyaniswa nesiteshi segumbi legesi lesicelo ngokusebenzisa isiteshi segumbi legesi ye-vacuum yomzimba we-piston ngokusebenzisa i-valve yokulawula, futhi ihlukaniswe nomoya wangaphandle. Ngemuva kokuthi injini iqalisiwe, i-vacuum (ingcindezi engalungile yenjini) ekusetshenzisweni okuningi kwenjini izokhuphukela ku -0.0667mpa (okungukuthi, inani lokucindezela komoya liyi-0.0333mpa, futhi umehluko wengcindezi nge-atmospheric pressure yi-0.0667mpa ). Kamuva, i-booster vacuum kanye ne-vacuum yegumbi lesicelo kukhuphuke kwafinyelela ku-0.0667mpa, futhi base bekulungele ukusebenza nganoma yisiphi isikhathi.

Uma ubhuleka, i-pedal ye-brake icindezelekile, futhi amandla e-pedal akhuliswa yi-lever futhi asebenze ku-push rod ye-valve yokulawula. Okokuqala, i-spring ebuyayo ye-valve push push iyacindezelwa, futhi i-valve push rod kanye nekholomu ye-valve yomoya iya phambili. Lapho i-valve yokulawula i-push rod iya phambili endaweni lapho inkomishi ye-valve yokulawula ithinta isihlalo se-vacuum valve, imbobo ye-vacuum valve ivaliwe. Ngalesi sikhathi, i-vacuum ye-booster kanye negumbi lesicelo liyahlukaniswa.

Ngalesi sikhathi, ukuphela kwekholomu ye-valve yomoya ivele ithinte indawo yediski yokusabela. Njengoba i-valve push push rod iqhubeka nokuya phambili, imbobo yevalvu yomoya izovuleka. Ngemuva kokuhlunga komoya, umoya wangaphandle ungena ekamelweni lesicelo le-booster ngokusebenzisa imbobo ye-valve yomoya evulekile kanye nesiteshi esiholela ekamelweni lokufaka isicelo, futhi amandla e-servo akhiqizwa. Ngenxa yokuthi ukwaziswa kwepuleti lokusabela kunesidingo sempahla ebonakalayo yokucindezela kweyunithi elinganayo endaweni egcizelelwe, amandla e-servo akhuphuka ngengxenye engaguquki (isilinganiso samandla e-servo) ngokwanda kancane kancane kwamandla okufakwayo we-valve push rod. Ngenxa yomkhawulo wezinsiza zamandla e-servo, lapho amandla e-servo aphezulu afinyelelwa, okungukuthi, lapho i-vacuum degree yegumbi lesicelo inguziro, amandla e-servo azoba njalo futhi ngeke asashintsha. Ngalesi sikhathi, amandla okufaka kanye namandla okukhipha i-booster azokhuphuka ngenani elifanayo; lapho ibhuleki likhanselwa, induku yokulawula i-valve ihlehla ngokuncipha kwamandla okufaka. Lapho iphuzu lokukhulisa eliphakeme lifinyelelwa, ngemva kokuvulwa kwembobo ye-vacuum valve, i-booster vacuum kanye negumbi lomoya lesicelo lixhunyiwe, izinga le-vacuum legumbi lesicelo lizokwehla, amandla e-servo azokwehla, futhi umzimba we-piston uzobuyela emuva. . Ngale ndlela, njengoba amandla okufakwayo ehla kancane kancane, amandla e-servo azokwehla ngesilinganiso esinqunyiwe (i-servo force ratio) kuze kube yilapho ibhuleki likhululwa ngokuphelele.


Isikhathi sokuthunyelwe:09-22-2022
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