更多"Diesel engine starting difficulties"的相关试题:
[单项选择]If you suspect a diesel engine is misfiring due to air leakage into the fuel system, you should begin looking for the leak at the （）
A. fuel line connections to cylinder injection valves
B. gasket surfaces of the fuel oil filters
C. discharge fitting of the fuel injector pumps
D. suction side of the fuel oil tran
[单项选择]A diesel engine fails to start due to excessive water in the fuelBefore the engine can be started, the water should be removed from the（）
A. fuel lines
B. lube oil filter
C. crank case pump
D. rocker arm reservoir
[单项选择]An auxiliary diesel engine may fail to start due to（）
A. low exhaust back pressure
B. high lube oil temperature
C. insufficient cranking speed
D. excessive fuel atomization
[单项选择]A diesel engine may fail to start due to （）
A. low air charge temperature
B. high cranking speed
C. excessive fuel dilution of lube oil
D. high compression pressure
[单项选择]The knock occurring when a cold diesel engine is started and continues while running at low speed, but stops when the engine reaches normal operating speed and temperature, is（）.
A. caused by retarded injection timing
B. caused by a mechanical defect in one cylinder
C. caused by high fuel injection pressures
D. normal for these conditions
[单项选择]Cold weather starting of a diesel engine is more difficult than warm weather starting due to（）
A. use of low viscosity oil in cold weather
B. increased moisture content of inlet air in cold weather
C. increased drag of pistons and bearings due to increased oil viscosity
D. higher compression pressures reached due to smaller clearances existing in the engine during cold weather
[单项选择]Cold weather starting of a diesel engine may be made easier by（）
A. decreasing the compression ratio
B. using a special fuel having a high ignition temperature
C. increasing the starting air supply
D. heating the jacket water
[单项选择]If a tow-stroke/diesel engine is over-speeding due to leakage of lube oil into the cylinders, what should you do to stop the engine?（）
A. Move the fuel control mechanism to the no fuel position
B. Block the fuel supply by closing the master fuel valve
C. Shut off the fuel supply and block the flow of intake air
D. Relieve all pressure in the fuel system
[单项选择]Engine coolant accumulating in the diesel engine lubricating oil can result from a （）
A. low oil pressure
B. high coolant pressure
C. leaking fuel injector
D. cracked cylinder head or liner
[单项选择]Before starting a diesel engine that has an engine driven lube oil pump, the engineer should （）.
A. open the bypass line
B. cut in the lube oil cooler
C. pressurize the lube oil system
D. top off the expansion tank
[单项选择]The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.
A. principle
B. principal
C. cause
D. case
[单项选择]A diesel engine is similar to a gasoline engine except that the former has no （）.
A. cross-head
B. cylinder
C. connecting rod
D. spark plug
[单项选择]Mechanical lubricators for diesel engine cylinders are usually small reciprocating pumps which are （）.
A. operated manually once an hour
B. operated until the engine has started
C. placed into operation only at maximum load
D. adjustable to meet lubrication requirements
[单项选择]Diesel engine mufflers accomplish noise reduction by （）
A. reducing exhaust gas velocity
B. increasing the frequency of gas vibration
C. the use of long head pipes
D. the use of zinc electrodes
[单项选择]A diesel engine burns （） a gasoline engine of the same capacity in the same period of time.
A. as much fuel as
B. less fuel than
C. less fuel as
D. more fuel than
[单项选择]Diesel engine fuel oil contamination often results in （）
A. governor malfunctions
B. fuel injection system malfunctions
C. high cylinder lube oil temperatures
D. low intake temperatures
[单项选择]Diesel engine crankshaft deflection readings are generally taken at four crank positionsGood engineering practice requires the deflection gage or indicator to be（）
A. placed as near the crankpin axis as possible
B. removed each time the crankshaft is repositioned
C. left in place for all four readings
D. reset to zero for all four readings
[单项选择]The diesel engine consumes considerably less fuel than the steam engine for equal output, （） enables a motor-ship to load more cargo.
A. why
B. which
C. in which
D. on which
