A、an oil seal
B、removing heat
C、a gas seal
D、cooling the piston
更多“The film of oil between the rings and the liner is not only essential for the lubrication but also plays an important part in achieving （）.”相关的问题
A、increase the liner area covered by the oil film B、maintain an oil film on the lower liner where scuffing is prevalent C、keep excess oil away from intake and exhaust ports D、help cushion piston skirt side thrust by providing a hydrodynamic oil wedge
A、top of the ring groove B、cylinder liner oil film C、bottom of the ring groove D、back of the ring groove
A、A.provide a reservoir for cylinder lubrication B、B.pump oil into the combustion space for cylinder cooling C、C.prevent excessive lubricating oil consumption D、D.allow hydraulic oil film formation on the cylinder
A、maintain even distribution of bearing wear B、maintain a constant oil temperature C、maintain a pressurized film between moving surfaces D、remove entrained water
A、Low viscosity index B、Low carbon forming tendencies C、High film strength D、High non-corrosive qualities
A、A.Water discharging from the water outlet of the lube oil purifier B、B.Fuel oil discharging from the water outlet of the lube oil purifier C、C.Lube oil discharging from the water outlet of the lube oil purifier D、D.A change in the lube oil viscosity
A、The chromium will not wear out the piston rings B、The chromium strengthens the liners in the way of the scavenging air ports C、Chromium eliminates the need for oil scraper rings D、Pores in the plating aid in maintaining the lube oil film
A、a drop of oil B、the emulsion of oil at sea surface C、the weathered oil D、the oil floating on the surface of the sea water
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