更多"Scuffed cylinder liner wearing surf"的相关试题:
[单项选择]Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A. starting the engine while hot
B. knurling the piston skirt
C. operating the engine overheated
D. scuff resistant piston rings
[单项选择]Scuffed cylinder liner surfaces in a diesel engine can result form（）
A. starting the engine hot
B. knurling the piston skirt
C. operating an overheated engine
D. using scuff resistant piston rings
[单项选择]It is easier to replace a dry cylinder liner than a wet one because（）
A. of the thin wall thickness
B. honing makes it easier to maintain the desired oil ilm
C. water seals are not required
D. it fits more loosely due to a decrease in heat transfer through the composite wall
[单项选择]The process of scavenging a two-stroke/cycle diesel engine serves to（）
A. improve fuel flow volume
B. cool the exhaust valves
C. reduce the intake air charge density
D. increase the temperature of exhaust gases
[单项选择]Which of the listed cylinder liner surface conditions indicates proper lubrication?（）
A. Dull black appearance
B. Bright appearance
C. Thin layer of lacquer
D. Thick oily film
[单项选择]A properly honed diesel engine cylinder liner will（）
A. prevent piston ring wear
B. shorten the ring break-in period
C. prevent cylinder liner glazing
D. appear slick and glazed
[单项选择]Improper cooling of a diesel engine cylinder liner due to the accumulation of scale deposits may cause （）.
A. low compression pressure
B. increased piston wear
C. increased cylinder lube oil consumption
D. poor contact between compression rings and liner
[单项选择]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 （）.
A. an oil seal
B. removing heat
C. a gas seal
D. cooling the piston
[单项选择]Cylinder liner cooling is often referred to as （）.
A. piston cooling
B. sleeve cooling
C. central cooling
D. jacket cooling
[单项选择]If the compression ratio is increased on any diesel engine, （）
A. the expansion ratio will decrease
B. combustion will be slowed down
C. thermal efficiency will decrease
D. thermal efficiency will increase
[单项选择]When the load is increased on a turbocharged diesel engine, the amount of increased air supplied by the turbocharger will（）
A. lag behind the increased fuel supplied to the engine
B. enter the engine along with the increase in the fuel
C. enter the engine before the increased fuel supply
D. leave the turbocharger as a negative pulse
[单项选择]Combustion gases formed in the cylinder of a diesel engine are prevented from blowing past the piston by （）
A. cylinder valves
B. compression rings
C. piston skirts
D. oil rings
[单项选择]The main purpose of inspection for a running diesel engine is（）
A. testing for the mechanical load and the thermal load
B. inspecting thermal and mechanical condition of the engine
C. inspecting each system and exhaust temperature
D. testing for compress pressure and explosion pressure
[简答题]什么叫班轮条款（Liner Term/Berth Term）？
[单项选择]A liner in riveted construction of a vessel is a(n)（）.
A. small plate which fills the aperture between riveted strakes and the vessel framing
B. backing plate which is used to level the strakes while riveting，and then removed
C. internal frame to which the side shell is riveted
D. seam that is welded after riveting is completed
[单项选择]
In a diesel engine, excessive cylinder liner wear will cause （）
Ⅰ.increased blow-by
Ⅱ.wear between the piston ring and groove
A. Ⅰonly is correct
B. Ⅱ only is correct
C. both Ⅰ and Ⅱ are correct
D. neither Ⅰ or Ⅱ are correct
[单项选择]The cylinder liner forming the cylinder wall and the inside of the water jacket is called a（）
A. dry liner
B. wet liner
C. jacket liner
D. corrugated liner
[单项选择]The cylinder is fitted with internal liner so that a water space is left （） the liner and the outer wall.
A. around
B. among
C. in
D. between
[单项选择]Each cylinder liner on the marine medium speed engines （）.
A. is usually cooled by sea water
B. can be replaced when worn out
C. is in direct contact with the water in the bore of the cylinder
D. can t expand when heated
