chemical analysis
back pressure readings
pyrometer readings
infrared analysis
第1题:
turbocharger
injection nozzle tip
carburetor
fuel oil pump
第2题:
performance
horsepower output
fuel consumption
scavenge effect
第3题:
feel the high pressure fuel line
check the cylinder exhausts for white smoke frequently
check the cylinder exhaust temperature
isolate each cylinder and inspect the injector
第4题:
a spark plug
injectors
the heat of compression
increasing jacket water temperatures
第5题:
increase in engine speed
increase in cylinder turbulence
leaking needle valve
reduction in cylinder turbulence
第6题:
excessive cylinder lubrication
a lugging engine
a leaking cylinder liner
overloading of one cylinder
第7题:
fuel pump should be removed and all connections blanked off
cylinder oil feed rate should be increased slightly above that used at normal sea speed
cylinder oil feed rate should be reduced
cylinder oil feed rate should be increased to the maximum flow capable of the metering pump
第8题:
low oil pressure
high coolant pressure
leaking fuel injector
cracked cylinder head or liner
第9题:
once every crankshaft revolution
once every two crankshaft revolutions
once every piston stroke
twice every piston stoke
第10题:
increase engine power
increase engine load
decrease engine power
improve fuel economy
第11题:
check cylinder lubrication
connect the pressure indicator pressure
test cylinder heads
connect the exhaust gas pyrometers
第12题:
a cylinder air charge of higher pressure
increased pumping losses
less valve overlap
reduced blow-by
第13题:
blows out the exhaust gases
supplies oxygen for combustion
cools the valves and cylinder walls
all of the above
第14题:
crankcase
piston
cylinder liner
crank cheek
第15题:
check cylinder lubrication prior to starting engine
connect exhaust gas analyzers to determine engine efficiency
pressure test cylinder heads to check for leaks
remove moisture accumulations from cylinder prior to starting
第16题:
Over speed
fire improperly
lose oil pressure
overheatrapidly
第17题:
a cracked cylinder head
a leaky cylinder head gasket
a cracked cylinder liner
any of the above
第18题:
cutting out individual injectors and noting engine performance
checking lube oil temperature
checking cam position
using a timing light
第19题:
intake valves
carburetor
exhaust ports
injector nozzles
第20题:
Spark plug
Heat of compression
Carburetor
Glow plug
第21题:
prevent piston side thrust
prevent engine friction losses
transmit heat from the piston to the cylinder liner
remove oil from the cylinder combustion space
第22题:
hollow tube surrounding the propeller used to improve thrust
nozzle attached to a firefighting hose
intake valve on a diesel engine
piston cylinder on a diesel engine
第23题:
prevent piston ring wear
shorten the ring break-in period
prevent cylinder liner glazing
appear slick and glazed