更多"Cylinder liner cooling is often ref"的相关试题:
[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 cylinder head, cylinder liner and （） form the combustion chamber.
A. frame
B. piston
C. crankcase
D. explosion plate
[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]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]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]Scuffed cylinder liner wearing surfaces in a diesel engines can result from （）
A. chromium plating piston rings
B. knurling the piston skirt
C. extended maximum power operation
D. applying load to a cold diesel engine
[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
[单项选择]
In a diesel engine, excessive cylinder liner wear will cause （）
(1) increased blow-by
(2) wear between the piston ring and groove
A. (1) only is correct
B. (2) only is correct
C. both (1) and (2) are correct
D. neither (1) or (2) axe correct
[单项选择]The space between cylinder liner and jacket is called （）.
A. the circulating tank
B. the scavenge box
C. the cooling water space
D. the cooler
[单项选择]If cylinder liner wear is up to maximum limits the possibility of scavenge fires will not be materially reduced until the liners are （）.
A. polished
B. renewed
C. adjusted
D. ground
[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 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]
In a diesel engine, a cylinder liner should be replaced if it is （）
Ⅰ.Scuffed
Ⅱ.Scored
A. Ⅰ only 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 rate of wear on a cylinder liner depends on the （）
A. quality of air filtration
B. effectiveness of lubrication
C. type of fuel used
D. all of the above
[单项选择]The bore of each cylinder is formed in a liner which can be （） when worn out.
A. welded
B. replaced
C. drilled again
D. bored
