1. Valv prentan
Prentan valv la afekte pa tanperati ki wo ak fòs altènatif peryodik segondè -frekans. Apre yon peryòd de itilizasyon, mete ak deformation plastik pral rive, ki pral febli fòs elastik la, sa ki lakòz pòv fèmen valv, redwi pouvwa motè, lafimen nwa soti nan tiyo echapman, ak difikilte pou kòmanse. Fòt. Se poutèt sa, tcheke fòs prentan prentan valv la regilyèman. Ou ka mete yon ti moso fè ant ansyen sezon prentan an ak nouvo prentan an, kranpon li sou yon vise ban epi konpare li pou wè ki jan li pi kout. Lè nouvo sezon prentan an konprese a 2/3 nan longè orijinal la, si ansyen sezon prentan an se 2mm pi kout pase nouvo sezon prentan an, li ta dwe ranplase. Si pa gen pyès rezèv pou yon ti tan, yon machin pou lave plat sou 2mm ka mete sou sezon prentan an fin vye granmoun pou fè moute pou mank de elastisite li yo. Nan sikonstans nòmal, yo ta dwe ranplase prentan valv la apre 2500 a 3000 èdtan nan itilize.
2. gaz piki ponp plonje sezon prentan
Prentan plonje ponp piki gaz la pral mete ak defòme tou pa fòs altènatif peryodik segondè -frekans, kidonk diminye longè gratis li yo ak febli fòs elastik li yo. Apre fòs elastik la febli, vitès retounen plonje a ralanti. konsa. Lè motè a ap kouri nan yon gwo vitès, mouvman an resipwòk nan piston an pa ka kowòdone ak gwo -mouvman rotary nan kam ponp lwil oliv la, se konsa ke leve nan plonje a redwi. Se rezèv gaz la redwi kòmsadwa, sa ki lakòz yon diminisyon nan pouvwa motè. Se poutèt sa, lè sezon prentan an plonje itilize pou 3600-4500h, li ta dwe ranplase nan tan.
3. Prentan tiyo priz
After the spring force of the oil outlet valve is weakened. It will cause serious internal leakage of high-pressure oil, the residual pressure in the high-pressure oil pipe will decrease, and the oil outlet valve will not be seated quickly, so that the oil supply will be reduced and unstable, and the engine will be weak and "travel". In addition, it will also make the fuel injector weak at the beginning, the fuel cut off is not straightforward, and the phenomenon of back dripping occurs, which leads to deterioration of combustion, overheating of the engine, and black smoke from the exhaust. Therefore, the oil outlet valve spring should be replaced after 3600-4500h of use. If it is bent and deformed, it should be replaced in time.
