2024 Tus sau: Erin Ralphs | [email protected]. Kawg hloov kho: 2024-02-19 16:10
compression yog dab tsi? Qhov no yog lub siab nyob rau hauv lub combustion chamber thaum kawg ntawm lub compression stroke. Nws tuaj yeem ua los ntawm cov piston rings lossis los ntawm lub tsheb ciav hlau valve. Hauv thawj kis, kev kho tsuas yog hloov pauv, thiab hauv qhov thib ob, nws muaj peev xwm ua tau yam tsis muaj nws. Xav txog cov xwm txheej zoo li no ntawm qhov piv txwv ntawm lub cav VAZ.
Ua ntej tshaj plaws, nws tsim nyog hais tias txoj haujlwm no hu ua "sib tsoo li qub". Thaum lub sijhawm ua haujlwm, cov pa roj carbon deposits ntawm lub rooj zaum valve, uas tiv thaiv lawv los ntawm kev kaw tag nrho. Yog li, lapping lub li qub kom tsis txhob muaj qhov tsis ua haujlwm no. Koj tuaj yeem qhia tau li cas yog tias lawv xav tau lapping? Cov lus teb yog yooj yim. Yog hais tias lub compression nyob rau hauv lub tog raj kheej tau poob, ces xws li ib tug kev khiav hauj lwm tsuas yog tsim nyog. Qhov tseeb yog tias lapping ntawm li qub yog xav tau rau cov cav no, cov peev txheej uas twb dhau los me ntsis, thiab chav tsev nyob deb ntawm lub zog tag nrho.
Thaum pib, qhov sib txawv yog tsim los ntawm lub rooj zaum thiab lub valve band vim yog hnav tom kawg. Txij li thaum "paj rwb" thaum kaw yog qhov muaj zog heev, lub sijhawm dhau los ntawm ntug tau tawg thiab cov duab ntawm qhov haum yog tawg. Tom qab ntawd rau hauv qhov sib txawvib qho kev sib xyaw uas tsis tau hlawv tau nkag mus, uas tsuas yog cokes ntawm lub valve bands, uas ua rau qhov sib txawv loj dua. Raws li txoj cai, cov teeb meem zoo li no tshwm sim feem ntau nrog cov pa tawm li qub, vim tias cov khoom siv li qub tau "sib tsoo" los ntawm cov khoom ntws. Tsis tas li ntawd, tsis muaj qhov cuam tshuam rau huab cua ntws, thiab lub sijhawm thaum qhov kub siab tshaj plaws, cov li qub tau raug kaw.
Tam sim no ncaj qha txog yuav ua li cas cov li qub tau lapped. VAZ categorically txwv tsis pub cov tswv ntawm cov tsheb no los ntawm kev sib tsoo nrog ib tug xyaum. Raws li lawv, nws yog tsis yooj yim sua kom ua raws li qhov tsim nyog siv zog. Tab sis qhov tseeb yog tias kev siv zog tsuas yog tsis xav tau. Yog tias koj siv nws, ces lub eeb yuav grind unevenly. Nyob rau hauv rooj plaub no, lub valve yuav tsis raug qhov chaw nruab nrab, uas ua rau muaj qhov sib txawv ntawm ib sab. Qhov no yog fraught nrog rau qhov tshwm sim tau piav qhia saum toj no. Tsis tau lapping li qub nrog lub laum tej zaum yuav tsis zoo li nws tuaj yeem ua nrog cov txheej tshwj xeeb.
Nws yog tsim nyob rau hauv peb theem. Lawv qhov sib lawv liag nyob ntawm qhov loj ntawm grit paste, uas hloov pauv hauv cov txheej txheem. Yog hais tias lub li qub yog lapped nrog ib tug xyaum, ces ib tug pin ntawm tib txoj kab uas hla li tus pas nrig yog clamped rau hauv nws. Ib qho kawg ntawm lub hose yog muab tso rau ntawm tus pin no, thiab lwm qhov ntawm lub valve. Tom qab ntawd lub eeb thiab girdle yog lubricated nrog muab tshuaj txhuam, tom qab uas me me rotational speeds teem. Yog tias lawv me dhau lawm, qhov no tsis yog teeb meem - lub sijhawm ua haujlwm yuav nce me ntsis.
Yog tias lawv loj, ces muaj kev pheej hmoo ntawm overheating thiabrooj zaum, thiab li qub. Ces tus yam ntxwv xiav kab txaij yuav tshwm rau lawv. Qhov no yog ib qho cim qhia ntawm overheating. Tom qab thawj zaug ua tiav, cov muab tshuaj yog tshem tawm, tom qab ntawd tom ntej, cov nplej me me yog rubbed. Tom qab siv cov tshuaj thib peb, cov chaw tau muab ntxuav kom huv nrog roj av. Tom qab ntawd koj yuav tsum tau lubricate lawv nrog cov roj cav thiab rov ua cov txheej txheem lapping, soj ntsuam cov "high-speed mode". Qhov no yuav ua kom lub kaw lus kaw kom nruj li sai tau.
Zoo, tom qab ntawd, qhov compression hauv lub tog raj kheej yuav pom tau nce ntxiv. Nws yuav tsum tau nco ntsoov hais tias cov cav nrog ib tug compression piv ntawm tsawg tshaj li 8 yog rhiab heev rau nws. Qhov no cuam tshuam rau qhov yooj yim ntawm kev ua haujlwm, yog li cov li qub tuaj yeem raug lapped txawm ntawm kev kho, piv txwv li, tom qab 20,000 km ntawm kev khiav.
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