更多"If the engine does not start on air"的相关试题:
[单项选择]If the engine does start on air, but combustion does not immediately begin, the cause may be （）.
A. failure of the fuel pumps
B. starting air pressure too low
C. stop valve in air line closed
D. the turning gear still engaged
[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]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]Diesel engine air start valve timing is controlled by（）
A. engine operating speed
B. an air manifold
C. a hydraulic distributor
D. individual cams and valve gear
[单项选择]Diesel engine air start system check valves are opened by （）
A. an air start cam
B. cylinder compression pressure
C. starting air pressure
D. valve springs
[单项选择]By far the greatest use is for diesel engine starting using air pressure of 25 bar or more provided by （）.
A. rotary compressors
B. reciprocating compressors
C. centrifugal compressors
D. screw compressors
[单项选择]If the engine of a survival craft does not start，check to see（）.
A. that the fuel valve is open
B. if the air supply system is open
C. if the water sprinkler system is open
D. if the limit switch is on
[单项选择]A diesel engine may be hard to start if the （）
A. air intake is restricted
B. engine is cranked too fast
C. vibration dampener is faulty
D. exhaust back pressure is low
[单项选择]As for a diesel engine, lack of combustion air may be due to （）.
A. fouling turbine
B. fuel pump faults
C. lubrication failure
D. excessive cooling
[单项选择]How does combustion air enter the cylinder of a two-cycle diesel engine?（）
A. Cylinder head valves
B. Ports
C. Turbo chargers
D. Bleeder valves
[单项选择]Air that may enter a refrigeration plant tends to collect in the （）.
A. upper part of the receiver
B. upper part of the condenser
C. down stream end of the cooling coil
D. outlet end of the condenser
[单项选择]A diesel engine fails to start because of water in the fuelIn order to start the engine, you should （）?
A. turn engine with jacking gear
B. drain filters and strainers and bleed off water at each injection pump
C. use ether to start the engine with blow-down valves open
D. blow through the cylinders and fuel lines with a drying agent
[单项选择]If a diesel engine is difficult to start and operates with the engine temperatures lower than normal, you should suspect that the （）.
A. compression pressures are below normal
B. lube oil is diluted with fuel oil
C. cranking speed is too low
D. exhaust system is partially restricted
[单项选择]The engine will fail to start unless （）.
A. the pressure of the starting air is high enough
B. there is enough air in the air reservoirs
C. the air is supplied into the cylinders in the appropriate sequence
D. all of the above
[单项选择]If a diesel engine fails to start，one of the likely causes is （）
A. low compression temperature
B. low ambient air pressure
C. high lube oil pump pressure
D. high fuel oil booster pump pressure
[单项选择]A diesel engine could fail to start because of （）
A. incorrect injection timing
B. low exhaust back pressure
C. floating exhaust valves
D. excessive cranking speed
