Lienjiniere tse nang le li-valve tse holimo le lisebelisoa tse ling tsa nako, sekoahelo se fanoa, se kenngoa hloohong ea cylinder ka gasket.Bala ka hore na sekoahelo sa valve gasket ke eng, ke mofuta ofe le hore na se sebetsa joang, hammoho le khetho ea sona e nepahetseng le phetoho, bala sengoloa.
Sekoaelo sa valve ke eng?
Li-valve cover gasket (cylinder head cover gasket) ke ntho e tiisang ea lienjineri tse tukang tse ka hare tse nang le li-valve tse holimo tsa mochini oa phepelo ea khase;Elastic gasket bakeng sa ho tiisa molumo o koahetsoeng ke sekoahelo sa hlooho sa silinda se kentsoeng hloohong ea cylinder.
The cylinder head cover gasket e etsa mesebetsi e mengata:
- Ho netefatsa ho tiea ha sekwahelo hloohong;
- Ho tiisa molumo o koahetsoeng ke sekwahelo ho thibela ho tsoa ha oli;
- Tšireletso ea likarolo tsa li-valve le oli ho tsoa tšilafalo (ho tloha litšila, lerōle, likhase tsa ho qeta, joalo-joalo).
Gasket ea sekoahelo sa valve ha se karolo ea bohlokoa bakeng sa ts'ebetso ea enjene - ntle le eona, sesebelisoa sa matla se tla sebetsa ka ho feletseng.Leha ho le joalo, e tiisa bohloeki ba enjene, ts'ireletseho ea mollo (ho thibela ho tsoa ha oli le ho e kenya likarolong tse futhumetseng - mokelikeli o mongata le tse ling) le boiketlo ba tlhokomelo.Ho phaella moo, gasket e thusa ho boloka bohloeki le litšobotsi tsa oli ea enjene.Ka hona, haeba ho tsuba ho hlaha ka tlas'a sekoahelo, gasket e lokela ho nkeloa sebaka, 'me e le hore u etse khetho e nepahetseng, u lokela ho utloisisa mefuta, likarolo le litšobotsi tsa likarolo tsena.
Mefuta, moralo le litšobotsi tsa li-valve cover gaskets
Ho sa tsotellehe hore na ke mofuta ofe, li-valve cover gaskets li na le sesebelisoa se tšoanang ka molao-motheo.Ena ke karolo e bataletseng ea rekere e pheta-pheta sebopeho sa sefofane sa ho khomarela sekoahelo ho hlooho ea silinda, 'me e na le masoba bakeng sa li-fasteners le likarolo tse ling.Gasket e behoa tlas'a sekoahelo, 'me ka lebaka la ho phutholoha ha eona, e tiisa lekhalo pakeng tsa sekoahelo le hlooho ea cylinder (ho tlatsa li-micro-irregularities le ho lefella ho kheloha ho fokolang ha libaka tsa bona tsa lifofane ho tloha sefofaneng), ho netefatsa ho tiisoa ha eona.
Tabeng ena, li-gaskets li ka ba le moralo o fapaneng:
● E feletseng (e sa khaotseng) - gasket ea annular kapa gasket ea sebōpeho se rarahaneng haholoanyane (mohlala, tlas'a likoahelo tsa lienjene tse nang le li-camshaft tse peli holim'a hlooho ea cylinder) ntle le likheo, tse kenngoa feela tlas'a sekoahelo;
● Composite - gasket e nang le likheo le ho kenya letsoho bakeng sa ho koala sekheo sa camshaft kapa likarolo tse ling;
● E phethehile - ho phaella ho gasket e kholo, kit e ka kenyelletsa litiiso tse eketsehileng tsa O-ring bakeng sa liliba tsa likerese le likoti tse ling sekoahelong.
Sekoahelo sa valve ka gasket le sebaka sa bona setsing sa matla
Li-gaskets tsa sekoahelo sa valve li ka aroloa ka mefuta e 'maloa ho latela thepa ea tlhahiso le ho sebetsa ka mefuta e fapaneng ea hlooho ea silinda.
Ho ea ka thepa ea tlhahiso ea li-gaskets ke:
● Rabara;
● Rubber-cork;
● Paronite;
● Cardboard.
Mofuta oa pele oa lihlahisoa o etsoa motheong oa rabara e thibelang mocheso le oli, e fetotsoeng ka li-additives le vulcanization e latelang.
Sekoahelo sa valve ea rabara ea gasket
Rubber gasket e entsoe ka limaraka tse fapaneng tsa rabara, ke eona e otlolohileng ka ho fetesisa, leha ho le joalo, ka lebaka la mefokolo ea thepa e entsoeng, e ka fetola litšobotsi tsa eona haholo nakong ea liphetoho tsa mocheso (e nolofatsa mocheso o phahameng, e fokotsehe serame. ) 'me ka kakaretso e na le nako e fokolang.
Li-gasket tsa rubber li entsoe motheong oa rabara, eo ho eona ho kenyelletsoang li-granular cork kapa li-filler tse ling tse porous.Lintho tse joalo li fana ka tekanyo e phahameng ea ho tiisa le ho thothomela ho itšehla thajana, empa li-gaskets tse entsoeng ka eona li batla haholo boleng ba ho kenya le ho kenya sekoahelo, hangata li hloka phekolo e eketsehileng ka sealant ea metsi le ho ba le bophelo bo fokolang ba tšebeletso.
Sekoahelo sa rabara plug gasket valve
Li-gaskets tsa paronite li entsoe ka paronite, thepa e entsoeng ka rabara e nang le lisebelisoa tse sa tšoaneng tsa liminerale, tse ntseng li bōptjoa le ho senyeha.Paronite e ka ba asbestos le ntle le asbestos, empa kajeno bahlahisi ba tlohela tšebeliso ea asbestos molemong oa lisebelisoa tse sireletsehileng.Hape, li-gaskets tsa paronite li ka ba tse tloaelehileng tse sa matlafatsoang le tse matlafalitsoeng ka terata ea tšepe, thini e tšesaane e nang le perforated, joalo-joalo Ke li-gaskets tsa paronite tsa li-cylinder head covers tse sebelisoang ka ho fetisisa kajeno ka lebaka la ho tšepahala ha tsona ho phahameng, ho hanyetsa litšusumetso tse mpe le litšobotsi tse ntle tsa ho tiisa.
Li-cardboard pads li entsoe ka likarolo tse khethehileng tsa pampiri e teteaneng e entsoeng ho fumana khanyetso ho oli, peterole, metsi le litšusumetso tse ling tse mpe.Li-gaskets tsena ke tse theko e tlaase, empa ke tsona tse ka tšeptjoang ka ho fetisisa, kahoo kajeno li sebelisoa lienjineng tse bonolo ka ho fetisisa.
Ho latela ts'ebeliso ea sekoaelo sa li-valve tsa gasket, e ka aroloa ka lihlopha tse peli:
● Bakeng sa lihlooho tsa li-cylinder tse akaretsang - li-in-line le li-enjini tse nang le sebōpeho sa V tse nang le hlooho e tloaelehileng le sekoahelo bakeng sa bohle kapa mola o le mong oa li-cylinders;
● Bakeng sa lihlooho tsa li-cylinder tse arohaneng - ka lienjine tse nang le lihlooho le likoahelo bakeng sa silindara ka 'ngoe.
Ka mokhoa o hlophisitsoeng, li-gaskets bakeng sa lihlooho tse tloaelehileng le tse arohaneng ha li fapane, li na le boholo bo fapaneng feela bakeng sa likoahelo tse lumellanang.
li-cylinder head cover gaskets li etsoa ho ea ka litekanyetso tsa li-automakers, 'me li ka boela tsa lumellana le litekanyetso tsa malapeng GOST 481-80, GOST 15180-86 le tse ling.
Litaba tsa khetho le ho nkela sebaka sa sekoaelo sa valve gasket
The valve cover gasket ke karolo ea bohlokoa, empa e phela nakoana 'me hangata e hloka ho nkeloa sebaka.Hangata, phetoho ea gasket e etsoa maemong a latelang:
● Ponahalo ea ho tsoa ha oli ho tloha ka tlas'a sekwahelo (sena se bontša ho senyeha kapa ho senyeha ha gasket ka lebaka la tšusumetso ea mechine le lik'hemik'hale, kapa ka lebaka la mekhoa ea tlhaho ea botsofali);
● Ka tokiso e 'ngoe le e 'ngoe ea mochine oa ho aba khase;
● Tabeng ea ho nchafatsoa ha yuniti ea matla kapa ho nkeloa sebaka ha likarolo tsa eona ka bomong kapa likopano - hlooho ea silinda, likoahelo tsa li-valve le tse ling;
● Ka tlhokomelo e tloaelehileng, haeba e fanoe ke moetsi oa enjene.
Bakeng sa ho nkela sebaka, o lokela ho khetha gasket e etselitsoeng mofuta ona le mohlala oa yuniti ea matla, kaha likarolo tsa li-motors tse ling li ke ke tsa lekana ka boholo le tlhophiso.Leha ho le joalo, ho na le likhetho tsa ho khetha thepa bakeng sa ho etsa gasket.Bakeng sa likoloi tse ncha tlas'a tiisetso, ho hlokahala ho sebelisa gasket e entsoeng ka thepa e boletsoeng ke moetsi, tabeng ena, ho nkeloa sebaka ha karolo ho lokela ho tšeptjoa feela ho litsebi.
Bakeng sa likoloi tse ling, u ka khetha gasket e entsoeng ka rabara, paronite kapa rabara e thibelang rabara - ha e le hantle, li-gaskets tsa morao-rao li hlophisitsoe ho latela litšobotsi, kahoo kaofela li na le litšobotsi tse tšoanang.Ke 'nete, mona o hloka ho hopola ka litšoaneleho tsa matla le boiketlo ba ho kenya li-gaskets tse entsoeng ka thepa e sa tšoaneng.Ka mohlala, li-gaskets tsa paronite ke tsona tse thata ka ho fetisisa, kahoo ke tsona tse bonolo ka ho fetisisa ho li kenya, 'me lihlahisoa tsa likoti tsa rabara, ho fapana le hoo, li holofala habonolo ebile li tabohile, kahoo ho kenngoa ha tsona ho thata ka ho fetisisa' me ho hloka tlhokomelo e khethehileng.
Ho nkela sebaka sa gasket sekoahelo sa cylinder ho tlameha ho etsoa ho latela litaelo tsa ho lokisa koloi.Hangata, ts'ebetso ena e itšetlehile ka lintlha tse latelang:
1.Dismantle lisebelisoa tse thibelang ho fihlella sekoahelo sa valve - tlosa sefahla, tlosa liphaephe tse sa tšoaneng;
2.Tlosa sekoahelo, tlosa gasket ea khale, hloekisa libaka tsa ho tlatsa sekoahelo le hlooho ea cylinder;
3.Kenya gasket e ncha;
4.Kenya sekoahelo, tiisa liboutu ka tatellano e nepahetseng - ho tšela ho tloha bohareng ho ea lipheletsong.
Bakeng sa ho kenya mefuta e meng ea li-gaskets, ho ka 'na ha hlokahala hore ho fokotsoe bokaholimo ba hlooho ea silinda le sekoahelo,' me ka mor'a ho kenya, kenya sealant libakeng tse ling (kapa ho tšoara motsoako oa likarolo le eona) - sena se bontšoa ka ho toba ditaelo.Ka khetho e nepahetseng le ho nkeloa sebaka ha gasket, ha e kenngoa ntle le ho sotha ha ho tiisa liboutu le ntle le liphoso tse ling, molumo o ka tlas'a sekoaelo o tla tiisoa ka mokhoa o tšepahalang, kahoo enjene e tla lula e hloekile, 'me mochini oa valve o tla lula o hloekile. sireletsoa litšusumetsong tse sa tšoaneng tse mpe.
Nako ea poso: Jul-26-2023