Mutu wa silinda ndi gawo lofunikira la injini. Bowo lalikulu la mafuta ndi gawo lofunikira pamutu wa silinda. Ngati dzenje lalikulu la mafuta liri ndi ma burrs, ma burrs amatsekereza tappet ya hydraulic pamene mafuta amalowa mu dzenje la HVA, zomwe zimapangitsa kuti zilephereke. , Zomwe zimapangitsa kuti valavu ya mutu wa silinda isatseke, zomwe zimapangitsa kuti silinda ikhale yopanda masilinda. Chifukwa chake, ndikofunikira kuwonetsetsa kuti palibe ma burrs omwe amakhalabe mu dzenje lalikulu la mafuta.

Zifukwa za ma burrs pamabowo amafuta a silinda:

The pobowola ndondomeko mafuta ndimero dzenje ya yamphamvu mutu workpiece kwenikweni ndi kukameta ubweya kutsetsereka njira opangidwa ndi kubowola chida kufinya workpiece. Chifukwa cha kapangidwe kake ndi kapangidwe ka mafutawo, m'mphepete, ngodya, ndi ngodya zomwe zimadutsana ndi njira ziwiri kapena zingapo zamafuta zimapangidwa. M'mphepete adzawoneka lalikulu pulasitiki mapindikidwe, kubowola pang'ono ndi workpiece adzakhala ndi njira kulekana pa mphambano, amene n'zosavuta kwambiri kutulutsa burrs.

Zotsatira zazikulu za cylinder head oil hole burrs ndi:

1. Kukhudza kulondola kwa dimensional kwa workpiece;
2. Kusokoneza kapena kusokoneza kulondola kwa kuyeza kwa workpiece;
3. Ma burrs amagwa panthawi yokonza kapena kuyendetsa, zomwe zimakhudza ukhondo wa ziwalo;
4. Panthawi yoyika, burr imagwa ndipo pali chiopsezo cha chitetezo cha zokopa ndi mabala;
5.Pakasinthidwe kotsatira, burr imagwa ndipo imayambitsa kutayika kwa gawo (gawo loipa), lomwe limapangitsa kuti gawolo liwonongeke;
6. Burr imagwa, ndipo burr imagwera pakati pa camshaft ndi chivundikiro cha camshaft, zomwe zimapangitsa kuvala kwachilendo kwa camshaft ndi chivundikiro cha camshaft kapena ngakhale kutseka kwa camshaft;
7. Burr imagwera mu njira ya VVT ndipo imapangitsa kuti makinawo asokonezeke ndikulephera;
8. Zimakhudza mphamvu yamafuta, potero imakhudza magwiridwe antchito a injini.