{"id":5282,"date":"2020-04-22T09:59:43","date_gmt":"2020-04-22T09:59:43","guid":{"rendered":"https:\/\/www.enginesmr.com\/obrada-glave-motora\/"},"modified":"2025-04-30T14:54:41","modified_gmt":"2025-04-30T14:54:41","slug":"obrada-glave-motora","status":"publish","type":"page","link":"https:\/\/www.enginesmr.com\/sr\/obrada-glave-motora\/","title":{"rendered":"OBRADA GLAVE MOTORA"},"content":{"rendered":"

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REMONT GLAVE MOTORA<\/h1>\n

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Ovaj deo motora naj\u010de\u0161\u0107e trpi havarije kada do iste do\u0111e. Pru\u017eamo usluge kompletnog remonta svih tipova glava motora, od putni\u010dkih do industrijskih.<\/span><\/p>\n

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\u0160ta je glava motora i koja je njena uloga?<\/h2>\n

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Glava motora<\/strong> je gornji deo motora. Naslanja se na blok motora kako bi se zatvorio kompresioni prostor cilindara, mesto u kome motor sagoreva gorivo i proizvodi snagu. U glavi motora nalaze se ventili koji reguli\u0161u protok vazduha. Usisni ventili uvla\u010de sve\u017e vazduh, potom dolazi do sagorevanja, nakon \u010dega izduvni ventili omogu\u0107avaju sme\u0161i sagorelog vazduha da iza\u0111e iz komore za sagorevanje.<\/span><\/p>\n

<\/span>Razlika kod glava motora mo\u017ee biti pre svega u materijalima koji se koriste za izradu istih. Kod novijih tipova motora naj\u010de\u0161\u0107e se koristi aluminijum kao legura, dok kod starijih tipova motora naj\u010de\u0161\u0107e se koristi gus.<\/span><\/p>\n

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Kako dolazi do havarije i kako se ona re\u0161ava?<\/h2>\n

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Uzroci havarije na glavama motora mogu biti razli\u010diti i naj\u010de\u0161\u0107e nastaju:<\/strong><\/p>\n

<\/span>Kao posledica lo\u0161eg odr\u017eavanja vozila. Kao posledica neobavljenog velikog servisa u predvi\u0111eno vreme pri kome se vr\u0161i zamena seta razvoda. Tada dolazi do pucanja zup\u010dastog kai\u0161a ili lanca usled istro\u0161enosti, preko kojih se ostvaruje povezanost donjeg dela motora (bloka) i gornjeg dela motora (glave). Gubitkom povezanosti (faze) klipovi koji se nalaze u bloku motora udaraju ventile koji se nalaze u glavi motora, krive ih ili lome. U ovakvim situacijama motor se gasi.<\/span><\/p>\n

<\/span>Usled lo\u0161eg podmazivanja motora. Lo\u0161e podmazivanje motora mo\u017ee biti posledica neredovne zamene ulja i filtera kada dolazi do zaprljanosti uljnih kanala i regulatora pritiska ulja u motoru ili neispravnosti pumpe za ulje. Kao posledica dolazi do habanja pokretnih delova u glavi motora kao \u0161to su bregasta osovina, podiza\u010di ventila, klackalice\u2026<\/span><\/p>\n

<\/span>Ukoliko do\u0111e do havarije, koji su simptomi i koji su slede\u0107i neophodni koraci?<\/strong><\/p>\n

<\/span>Kod ve\u0107ih i trenutnih havarija nastalih u glavi motora, motor prestaje sa radom. Uzroci havarija mogu biti razli\u010diti. Samim tim i simptomi su takvi. Neke slu\u010dajeve koji postepeno dovode do o\u0161te\u0107enja delova u glavi motora, kasnije do havarija, mo\u017eemo prepoznati. To su razli\u010dite promene u radu motora. One se nekada manifestuju gubitkom snage motora, \u010desto promenom zvuka rada motora u kome se mogu prepoznati razli\u010dita \u201ckuckanja, lupkanja, itd.\u201d <\/span>Ukoliko prepoznamo neku od tih promena, neophodan je pregled vozila od strane servisera (mehani\u010dara) kako bi utvrdio dalje postupke.<\/span><\/p>\n

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Dostupne operacije su:<\/h3>\n

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  • Hidro test<\/span> glave motora<\/span><\/li>\n
  • Ravnanje nalegaju\u0107e povr\u0161ine<\/li>\n
  • Frezovanje sedi\u0161ta ventila<\/li>\n
  • Zamena sedi\u0161ta ventila<\/li>\n
  • Izrada i zamena \u010daura dizni<\/li>\n
  • Ugradnja reducira<\/li>\n<\/ul>\n

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    • Zamena vo\u0111ica i gumica<\/li>\n
    • \u0160telovanje ventila<\/li>\n
    • Zavarivanje aluminijuma<\/li>\n
    • Va\u0111enje zalomljenih brezona<\/li>\n
    • Va\u0111enje zalomljenih greja\u010da i dizni<\/li>\n
    • Trnovanje le\u017ei\u0161ta bregaste<\/li>\n<\/ul>\n

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      Kako sve to izgleda u praksi?<\/h2>\n

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