更多"On the top of the cylinder is mount"的相关试题:
[单项选择]Each cylinder is closed at the top by a (), made of a special heat-resistant steel.
A. cylinder liner
B. coupling flange
C. cylinder cover
D. piston crown
[单项选择]On top of scavenging air box is mounted a strong cast iron frame for each cylinder known as()
A. cooling jacket
B. cylinder liner
C. piston crown
D. cylinder cover
[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]Cracks in cylinder and cylinder covers may () from unequal heating.
A. make
B. cause
C. result
D. produce
[单项选择]The cylinder oil is pumped into the cylinder (via non-return valves) when the piston rings pass the lubricating orifices during ()
A. the upward stroke
B. the downward stroke
C. the power stroke
D. the suction stroke
[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]() is used for cylinder and cylinder head, the salt water is used for cooling the lubricating oil, the fresh water in the coolers and the charging air in the air cooler.
A. The fuel oil
B. The lube oil
C. The sea water
D. The fresh water
[单项选择]To counteract these undesirable effects cylinder oils usually contain additives formulated to impart a high degree of () and detergency.
A. salinity
B. alkalinity
C. acid
D. sanitary
[单项选择]Cylinder lubrication oil for low speed main propulsion diesel engines is admitted to each cylinder during ().
A. the power stroke
B. the compression stroke
C. low load operation only
D. periods of standby
[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]Which of the diesel engine cylinder liners listed has internal cooling water passages?()
A. Internally finned liner
B. Externally finned liner
C. Wet liner
D. Integral water-jacket liner
[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]Why are some diesel engine cylinder liners plated on the wearing surface with porous chromium?()
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
[单项选择]Cylinder liners from older lower powered engines had a uniform wall thickness and the cooling was achieved by circulating cooling water through a space formed between ().
A. crown and skirt
B. liner and jacket
C. ring and groove
D. jacket and block
[单项选择]Exhaust valve openings in a diesel engine cylinder head are made as large as practical to ()
A. increase back pressure during the exhaust process
B. facilitate periodic replacement of the valves
C. reduce the pumping loss associated with scavenging
D. reduce tension on valve springs
[单项选择]Fuel is not supplied to the corresponding cylinder due to a failure of ().
A. the motor
B. the fresh water generator
C. the governor
D. the fuel pump
[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]When one cylinder has a lower compression pressure and higher exhaust gas temperature than any of the other engine cylinders, which of the conditions listed will indicated?()
A. Advanced ignition
B. Clogged air intake
C. Leaky exhaust valve
D. High exhaust pressure