Inkqubo yokuthambisa i-injini yenzelwe ukwazisa i-oyile ye-viscosity efanelekileyo kwindawo yokukhuhlane kwiindawo ezahlukeneyo ezihambayo kwi-injini, kunye nokunciphisa ukukhuhla kunye nokuguga kwezibini zokukhuhlana ngokwenza ifilimu yeoli. Le nkqubo ayiboneleli kuphela ngokuthambisa, kodwa inemisebenzi emininzi efana nokupholisa,-ukubola, ukutywina kunye nokucoca.
[1] Umsebenzi wokuthambisa:
I-oyile ye-injini yenza ifilimu ye-oyile eqhubekayo phakathi kweeperi zentsimbi zentsimbi, ngokufanelekileyo ukunciphisa ukukhuhla kunye nokuguga kunye nokwandisa ubomi benkonzo ye-injini.
[2] Isiphumo sokupholisa:
Xa i-oyile ye-injini ijikeleza e-injini, iyakususa ubushushu bamaqondo obushushu aphezulu{0}, kwaye emva koko ikhuphe ubushushu ngezinye iindlela zokupholisa ukugcina ubushushu obuqhelekileyo bokusebenza kwe-injini.
[3] Anti{1}}umsebenzi wokutya:
I-oyile ye-injini igubungela umphezulu weendawo ezahlukeneyo ze-injini, zenza ifilimu ekhuselayo, ekhusela ngokufanelekileyo i-rust kunye ne-corrosion yamalungu esinyithi.
[4] Isiphumo sokutywina:
I-oyile ye-injini ivala izithuba ngaphakathi kwe-injini, ithintela igesi kunye nesipholisa ekuvuzeni kwezi zithuba, iqinisekisa ukusebenza kokutywinwa kwe-injini.
【5】 Ukucoca umsebenzi: Ngexesha lenkqubo yokujikeleza, i-oyile ye-injini inokuhlamba umphezulu we-cylinder kunye nezinye iindawo ze-injini, isuse idiphozithi yekhabhoni kunye nobunye ukungcola, kwaye ihluze ngesihluzo se-oyile ukugcina ingaphakathi le-injini licocekile.