A two-stroke diesel engine exhaust temperature will be lower than a four-stroke diesel engine of the same displacement because the （）
(1) scavenging air is cooling the exhaust gases
(2) exhaust cycle time is longer
A.(1) only
B.(2) only
C.both (1) and (2)
D.neither (1) nor (2)
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A.acidity has increased
B.viscosity has decreased
C.demulsibility has improved
D.foaming is guaranteed to occur
A.increase the fuel oil temperature
B.decrease the fuel oil temperature
C.decrease the fuel oil supply pressure
D.increase the air supply
With regards to a diesel engine crankcase explosion, the most violent is the（）
(1) primary explosion
(2) secondary explosion
A.(1) only
B.(2) only
C.both (1) and (2)
D.neither (1) or (2)
A.increased heat transfer
B.fireside erosion
C.high steam demand
D.overheated tubes
A.gas composition
B.gas temperature
C.pressure
D.timing
最新試題
Maximum horsepower of a diesel engine is attained （）.
In using reduction gears to obtain efficient propeller speeds, （）.
Which of the two events listed occurs simultaneously in a two-stroke/cycle diesel engine?（）
A diesel engine is operating with excessively high exhaust temperatures at all cylindersTo correct this condition, you should FIRST （）.
What causes diesel fuel to be ignited in the cylinder of an operating diesel engine?（）
The highest pressure in a diesel engine cylinder normally occurs （）.
For a given size engine, the two-stroke/cycle diesel engine will deliver more power than a four-stroke/cycle diesel engine because （）.
An automated diesel engine should normally shut down due to （）
A thrust bearing is used with a propulsion diesel engine to （）.
The minimum speed an engine must attain before ignition can occur depends upon （）.