valavu ya PCV

The crankcase ventilation valve (CVKG) kapena PCV (Positive Crankcase Ventilation) amagwiritsidwa ntchito kugwiritsa ntchito moyenera chopangidwa mu crankcase kusakaniza gasi. Gawoli limayikidwa pamitundu yambiri yamakono yokhala ndi jakisoni woperekera mafuta ndipo imatenga gawo lodziwika bwino pakuwongolera kusakanikirana kwamafuta a mpweya. Kugwiritsa ntchito molakwika valavu ya VKG kumabweretsa kuwononga mafuta и kusakhazikika kwa injini yoyaka moto mkati.

Tidzafotokozera mwatsatanetsatane za chipangizocho, mfundo yogwiritsira ntchito, zowonongeka ndi njira zowunikira valve ya PCV pansipa.

Kodi valavu ya PCV ili kuti ndipo ndi ya chiyani?

Malo a valve ya PCV mwachindunji amadalira kusintha kwa galimoto. Kawirikawiri, gawolo limamangidwa mu chivundikiro cha valve cha injini yoyaka mkati, koma ikhoza kuikidwa m'nyumba yosiyana, kuphatikizapo cholekanitsa mafuta, pafupi ndi icho. Njira yomaliza ikugwiritsidwa ntchito kwambiri m'mibadwo yaposachedwa ndi mitundu ya BMW ndi Volkswagen.

Mutha kupeza valavu ya mpweya wa crankcase ndi chitoliro chopyapyala chotuluka kuchokera pamenepo, cholumikizidwa ndi njira ya mpweya m'dera lomwe lili pakati pa ma intake manifold ndi throttle.

Momwe valavu ya crankcase imawonekera zitha kuwoneka pachithunzichi ndi chitsanzo chabwino.

Ili kuti valavu ya crankcase ventilation pa VW Golf 4, dinani kuti mukulitse

Ili kuti valavu ya pcv yomwe ili mu Audi A4 2.0, dinani kuti mukulitse

Malo a KVKG pa Toyota Avensis 2.0, dinani kuti mukulitse

Kodi valavu ya crankcase ventilation ndi chiyani?

Cholinga chachikulu cha valve ya PCV ndi kuwongolera kuchuluka kwa gasi wa crankcaseamaperekedwa kwa throttle danga mu njira zosiyanasiyana ntchito ya injini kuyaka mkati. Izi zimakwaniritsa dosing yolondola ya mpweya kuti ipange chiŵerengero choyenera cha kusakaniza kwa mpweya ndi mafuta. Komanso, KVKG amalepheretsa kuyaka kwa mpweya wa crankcase ndi flashback mu kudya.

Chipangizocho ndi momwe valavu ya mpweya wa crankcase imagwirira ntchito

VKG vavu chipangizo: kanema

Mwadongosolo, gawo ili mu crankcase ventilation ndi valavu yodutsa, yopangidwa ndi thupi lomwe lili ndi mapaipi awiri anthambi ndi chinthu chosunthika chogwira ntchito.

M'mavavu a PCV omangidwira, zolowera ndi zotuluka zimatsekedwa ndi plunger, ndi zomwe zili m'nyumba yosiyana ndi cholekanitsa mafuta, ndi nembanemba. Akasupe amalepheretsa chinthu chokhoma kuti chisamayende momasuka popanda kukopa kwakunja.

Momwe valavu ya VKG imagwirira ntchito

Mfundo yogwiritsira ntchito valve ya PCV imachokera pa kusintha kwa mphamvu yolowera. Ndi zovomerezeka zotheka kusiyanitsa 4 zigawo zikuluzikulu za KVKG malinga ndi kuchuluka kwa kutsegula ndi kuchuluka kwa mpweya wodutsa wa crankcase.

Mlingo wa kutsegula kwa valve ya PCV kutengera momwe amagwirira ntchito injini yoyaka mkati

Mitundu	ICE sikuyenda	Kuchepetsa / kuchepetsa	Kuyenda kofanana, liwiro lapakati	Kuthamanga, ma revs apamwamba
Vacuumu muzolowera zambiri	0	Pamwamba	Pakatikati	Otsika
Chikhalidwe cha valve ya PCV	Kutseka	ajar	nthawi zambiri amatsegula	Kutsegula kwathunthu
Kuchuluka kwa mpweya wa crankcase	0	yaying'ono	Pakatikati	Zazikulu

Kuchokera kumbali yolowera, kupanikizika komwe kumapangidwa ndi mpweya wa crankcase kumagwira ntchito pa valve. Ikadutsa mphamvu yamasika, chinthu chomwe chimatsekereza dzenje (membrane kapena plunger) chimasunthira mkati, ndikutsegula mwayi wosakanikirana ndi mpweya ku nyumba ya fyuluta.

VKG vavu chipangizo mu VW Polo

Kudzaza KVKG mu Chevrolet Lacetti

Panthawi imodzimodziyo, kuchokera kumbali ya kutulukira, valavu imakhudzidwa ndi vacuum (kupanikizika pansi pa mlengalenga), yomwe imapangidwa muzowonjezera zambiri. Kuletsa gawo loyenda la valavu kumakupatsani mwayi wolozera gawo la mpweya kuchokera ku crankcase, wosonkhanitsidwa pansi pa chivundikiro cha valve, kulowa pakati pa fyuluta ya mpweya ndi valavu ya throttle. Pakachitika flashback ndi dontho lakuthwa mu vacuum mu kuchuluka kwa kudya, kutulutsa kwa KVKG kumatsekedwa kwathunthu, potero kulepheretsa kuyatsa kwa gasi woyaka.

Kodi valve ya PCV imachita chiyani?

Mitundu ya valve ya PCV

Valve ya PCV imakhudza mwachindunji ntchito ya injini yoyaka mkati, ndikukonza njira yopangira kusakaniza. Posintha malo oyenda panjira, imawongolera kutulutsa kwa mpweya wa crankcase wokhala ndi tinthu toyaka munjira ya mpweya isanayambe kapena itatha. Izi zimakupatsani mwayi wogwiritsa ntchito mpweya wabwino wa crankcase moyenera momwe mungathere komanso nthawi yomweyo kuteteza kulowetsedwa kwa kusakaniza kwa mpweya wosadziwika bwino munjira zambiri.

Ngati valavu ya crankcase ventilation yalephera, imadyetsedwa mukumwa mopitirira malire, kapena osagwira ntchito konse. Komanso, muzochitika zoyamba, izi nthawi zambiri sizimakhazikitsidwa ndi masensa aliwonse, ndipo kachiwiri, zimabweretsa kuyesa kuwongolera mopanda chilungamo kwa kusakaniza kwamafuta a mpweya.

Chifukwa cha mpweya wochuluka womwe umalowa m'chipinda choyaka moto, injini yoyaka mkati imayamba kuipiraipira, kulephera kumatheka panthawi yothamanga kapena nthawi zina pamene kuli kofunikira kuonjezera mphamvu. Kuphatikizika kwa ma valve kumatha kupangitsa kuti mafuta azigwiritsidwa ntchito kwambiri komanso kuwonjezera kuchuluka kwamafuta, zomwe zimapangitsa kugwira ntchito molakwika komanso kugwedezeka kwa injini pa idle.

Vavu mu crankcase ventilation system

Zizindikiro ndi Zomwe Zimayambitsa Vuto Losweka la PCV

Liwiro la ICE likulendewera chifukwa cha valve ya PCV ndikuthetsa mavuto: kanema

Ngakhale valavu ya crankcase ventilation ili ndi chipangizo chosavuta, nthawi ndi nthawi imalepherabe kapena sichigwira ntchito bwino. Kodi zizindikiro za valavu VKG wosweka ndi chiyani? Nthawi zambiri ndi:

• kugwedezeka kwa injini yoyaka mkati, yosiyana ndi katatu;
• kuwomba m'zakudya zambiri pambuyo pa progazovka;
• kulephera kuyenda kuchokera 3000 mpaka 5000 rpm;
• Kusintha kwa RPM.

Ndi zovuta zomwe zimayenderana ndi mpweya wabwino wa crankcase, kuchuluka kwamafuta, kuthira mafuta a valve ndi mpweya wotuluka kuchokera ku crankcase ndikotheka.

Kodi valavu ya gasi ya crankcase ingakhale yotani?

Nthawi zambiri pamakhala kuphwanya kulimba kwa nyumbayo chifukwa cha kuwonongeka kwamakina (mwachitsanzo, pakukhazikitsa pambuyo poyeretsa) kapena kugwira ntchito mosayembekezereka, kutsegula kosakwanira ndi kutseka kwa ma dampers chifukwa chaukwati wawo.

Choncho, zifukwa zazikulu za kulephera kwa valve ya PCV ndi kuwononga kapena kupanikizana kutseka zinthu kapena zikoka zakunja.

kuwonongeka kwa valavu ya mpweya wa crankcase ndi zizindikiro zawo zikuwonetsedwa patebulo.

kuswa	Chifukwa chiyani zikuwoneka	Zizindikiro	Chikuchitika ndi chiyani
Depressurization / mpweya kutayikira	Kuwonongeka kwamakina pamlanduwo. Zisindikizo / mapaipi otha. Kuyika koyipa.	Kuyamba kovuta kwa injini yoyaka mkati, liwiro loyandama pazaka makumi awiri, kutaya mphamvu. Imbani mluzu kuchokera ku valve. Zosakaniza zotsamira, kodi P0171.	Mpweya wosadziwika wa DMRV umalowetsedwa muzinthu zambiri, mpweya wa crankcase kwathunthu kapena pang'ono umatuluka kunja.
Kukhazikika Kwambiri / Kuchita Bwino Kwambiri	Kusweka kwa masika. Diaphragm yowonongeka kapena spool. Kukomoka pamalo ogwirira ntchito. Kupanga ma depositi amafuta mkati mwake. Kuwonongeka kwakupanga.	Kuyamba kosavuta, koma kusakhazikika kwa injini yoyatsira mkati mutatha kutentha popanda ntchito. Kusakaniza kolemera, kodi P0172.	Mpweya wochuluka wa crankcase wokhala ndi tinthu tamafuta umalowa m'thupi. Pa kutentha ndi katundu, mawonekedwe awa ndi abwino, mu injini zina zoyaka mkati sizigwira ntchito moyenera.
Kuchita kwatsekedwa/kuchepa		Kuyamba kovuta kwa injini yoyaka mkati, liwiro loyandama pazaka makumi awiri, kutaya mphamvu. Zosakaniza zotsamira, kodi P0171. Mafuta amaika pa throttle, makoma mpweya ducts, ma intake angapo ndi majekeseni.	Mayendedwe owerengeka a mpweya kulowa muzolowera akuphwanyidwa. Kuthamanga konse kwa mpweya wa crankcase kumaperekedwa kutsogolo kwa valavu ya throttle.

CVCG sizingagwire ntchito moyenera chifukwa cha kuwonongeka kwa mpweya wa crankcase kapena mavuto ndi CPG. Pankhaniyi, lakuthwa kuchuluka kwa mpweya wa crankcase kumawonjezekakudutsa valavu, ndi mwayi wa mafuta ake mofulumira. Choncho, musanayang'ane valve ya PCV, muyenera kuonetsetsa kuti palibe mavuto omwe amachititsa kuti mafuta atuluke kudzera mu mpweya kapena kutuluka kwake kudzera muzitsulo ndi zisindikizo.

Onani valavu ya PCV

Diagnostic autoscanner Rokodil ScanX

Mutha kuyang'ana mavavu a PCV thupi ndi mapulogalamu njira. Chachiwiri, mudzafunika wothandizira, chojambulira chowunikira kapena chosinthira cha OBD II ndi pulogalamu yapadera ya PC kapena foni yam'manja. Chimodzi mwazosankha zabwino kwambiri ndi autoscanner Rokodil ScanX, popeza imagwirizana ndi mitundu yonse yamagalimoto, yang'anani machitidwe a masensa onse ndi machitidwe, imapereka malangizo olakwika.

Pazidziwitso zakuthupi, zomwe zimachitika poyang'ana kuyankha kwa CVCG ku zisonkhezero zakunja kuchokera ku zida, wrench yotseguka yokha ndiyofunikira kuchotsa valavu.

Vavu ya PCV ikhoza kuyesedwa kale ndi kuyeretsa pakamwa. Mpweya ukadutsa momasuka kuchokera kumbali yotulukira, gawolo silikugwira ntchito. Ngati KVKG kuwomberedwa kokha kuchokera kumbali yolowera, izi zikuwonetsa kuti ili mu dongosolo. Mutha kutsimikizira kuti gawolo lili bwino pogwiritsa ntchito imodzi mwa njira zotsatirazi.

M'magalimoto ena, mwachitsanzo, mitundu yatsopano ya BMW, valavu ya PCV ndi yosachotsedwa komanso yosalekanitsidwa. Yang'anani mwakuthupi kosatheka popanda kuwononga chombo. Pankhaniyi, mutha kuyang'ana pogwiritsa ntchito zowunikira pakompyuta, kapena posintha ndi mfundo yodziwika bwino.

Kuti muwone momwe valavu ya crankcase ikuyendera, tsatirani izi:

Dzichitireni nokha VKG valavu fufuzani Toyota Vitz: kanema

1. Chotsani valavu pa dzenje la chivundikiro cha vavu, mutachotsa payipi kuchokera ku chitoliro chotulukira.
2. Yang'anani polowera kuti muwone dothi, chotsani ngati kuli kofunikira.
3. Limbani valavu ndi pakamwa panu kuchokera kumbali yotulukira: mpweya sayenera kudutsa KVKG yogwira ntchito.
4. Lumikizaninso payipi yolowera mpweya pamalopo.
5. Yambani ndi kutentha injini.
6. Tsekani cholowera cha valve mwamphamvu ndi chala chanu. Mu gawo lothandizira, izi zimatsagana ndi kudina ndipo phokoso limamveka - chala "chimamatira" ku dzenje.

Kuyang'ana valavu ya crankcase ventilation ikuchitika mwadongosolo ndi malo a throttle valve osagwira ntchito.

Kuyang'ana valavu ya PCV pogwiritsa ntchito zowunikira pakompyuta pa chitsanzo cha galimoto ya Chevrolet Lacetti:

Kuwunika kwaukadaulo kwa valavu ya PCV pa Chevrolet Lacetti yokhala ndi zowunikira pakompyuta: kanema

1. Chotsani valavu ndi wrench ya 24-mm yotsegula, mutachotsa payipi mupaipi yotulutsira.
2. Gwirizanitsani payipi pachotulukira.
3. Lumikizani scanner kapena adapter ya OBD II ku socket yodziwira matenda m'chipinda chokwera.
4. Yambitsani pulogalamu yowunikira ndikuwonetsa zowerengera za throttle position (malo enieni a remote control).
5. Yambani ndi kutentha injini. Pankhaniyi, mtengo wa malo enieni a zomverera zakutali uyenera kukhala mkati mwa masitepe 35-40.
6. Lumikizani cholowera cha valve ndi tepi yolumikizira kapena khalani ndi pulagi yothandizira ndi chala chanu. Gawoli liyenera kuwonjezeka ndi masitepe asanu ndi asanu.
7. Chotsani payipi yolowera mpweya kuchokera pa valve ya PCV. Ngati CVCG ili bwino, malo enieni a throttle adzatsika mpaka masitepe 5. Izi zikuwonetsa kuti valavuyo inali kuletsa mpweya wodutsa mukudya popanda ntchito.

Kuthandizira valavu ya crankcase ventilation

Chimodzi mwazifukwa zazikulu za ntchito yolakwika ya CVKG ndi kuipitsidwa kwa malo ogwirira ntchito. Izi zitha kupewedwa poyeretsa valavu ya crankcase ventilation. pa 20-000 km iliyonse.

Kupaka mafuta pang'ono pamwamba pa KVKG ndi njira yachilengedwe. Komabe, ngati alowa mafuta mofulumira kuposa 10 Km, ichi ndi chifukwa cha matenda crankcase mpweya mpweya. N'zotheka kuti cholekanitsa mafuta kapena payipi ya mpweya watsekedwa.

Momwe mungayeretsere valavu ya PCV ndi momwe mungayeretsere

Kuyeretsa valavu ya PCV ndi WD-40 kutsitsi

Zinthu zotsatirazi ndizoyenera kuyeretsa valavu ya PCV:

• carburetor kapena injector cleaner;
• chotsuka chotsuka;
• Chidziwitso-40;
• mafuta a palafini kapena dizilo.

Mukamagwiritsa ntchito mankhwalawa mu mawonekedwe a aerosol okhala ndi chubu, iyenera kubayidwa kudzera mu chitoliro cholowera mu KVKG. Mafuta a palafini ndi dizilo amatha kubayidwa ndi syringe kapena syringe. Njira yothamangitsira iyenera kubwerezedwa mpaka ma depositi onse achotsedwa.

Pambuyo poyeretsa, muyenera kuyang'ana ntchito ya valve ya PCV pogwiritsa ntchito imodzi mwa njira zomwe tafotokozazi. Ngati kuwotcha sikuthandiza, gawolo kufunika m'malo.

Kuphatikiza pa valavu yokha, cholekanitsa mafuta ndi ma hoses a crankcase ventilation system amafunikiranso kuthamangitsidwa nthawi ndi nthawi ndi njira zomwezo. Ngati atatsekedwa ndi ma depositi amafuta, dongosololi silingathe kupereka mpumulo mu crankcase, ngakhale ndi CV yogwira ntchito.

Mafunso omwe amafunsidwa pafupipafupi za valve ya crankcase

• Kodi valavu ya crankcase ventilation ndi chiyani?

  KVKG - chinthu cha crankcase mpweya mpweya, structural kuimira nembanemba kapena plunger bypass valavu.

• Kodi valavu ya crankcase ventilation ili kuti?

  Mu zitsanzo zambiri, KVKG ili mu valavu chivundikiro cha injini kuyaka mkati (kumbuyo kapena pamwamba) kapena moyandikana ndi mu nyumba osiyana ndi olekanitsa mafuta.

• Kodi valavu ya PCV ndi chiyani?

  Valve ya PCV imayang'anira kutuluka kwa mpweya wa crankcase muzinthu zambiri zolowera, kuwatsogolera kutsogolo kwa valve yothamanga. Zimakuthandizani kuti muzitha kukhathamiritsa kusakaniza kwamafuta a mpweya pansi pamitundu yosiyanasiyana ya injini yoyaka moto.

• Momwe mungayang'anire ntchito ya valve ya PCV?

  KVKG yogwira ntchito siwombedwa kuchokera kumbali yotulukira, koma imadutsa mpweya kuchokera kumbali yolowera. Pamene cholowera cha valavu chochotsedwa chatsekedwa pa injini yoyaka ndi yotenthetsera mkati, kudina kumamveka ndipo kumamveka momwe chinthu chotsekereza (chala) chimakopeka. Ngati valavu sichidutsa macheke awa, tinganene kuti valavu ya VKG ndi yosagwira ntchito.

• Momwe mungadziwire kuwonongeka kwa valve ya crankcase ventilation?

  Kupanikizana kwa CVCG pamalo otseguka kumabweretsa kulemeretsa kwakukulu kwa kusakaniza kwamafuta a mpweya ndi ntchito yosakhazikika ya injini yoyaka mkati (ma revs ndi troit float) osagwira ntchito pambuyo pakuwotha. Ngati valavu sitsegula mu nthawi kapena mphamvu yake imachepa, chisakanizocho chidzakhala chowonda, ndipo padzakhala mavuto poyambira ndi kuthamanga kwachangu kudzawonongeka.