海船船员考试
单选题Turbulence is created in the cylinders of a diesel engine to （）A obtain injection lagB help mix fuel and airC increase combustion pressureD utilize higher injection pressures
题目
obtain injection lag
help mix fuel and air
increase combustion pressure
utilize higher injection pressures
相似问题和答案
第1题：
vacuum pressure
specific gravity
heat
viscosity
第2题：
fine atomization
high temperature
good mixing of fuel and air
all of the above
第3题：
A sudden power loss from a turbocharged and after-cooled diesel engine is an indication of a/an
A.turbocharger malfunction or failure
B.crankcase exhauster overload
C.overload on the intercooler
D.obstruction in the engine cylinders
第4题：
Shape of the piston crowns
Increasing the compression ratios
Increasing the piston crowns
Increasing the turbocharger gear ratio
第5题：
compressibility of the fuel
high fuel oil supply flow
scored plunger and barrel packing
excessive air turbulence
第6题：
a shortened ignition delay period
a lean fuel/air mixture
excess fuel in the combustion chamber
rapid vaporization of injected fuel droplets
第7题：
Move the fuel control mechanism to the no fuel position
Block the fuel supply by closing the master fuel valve
Shut off the fuel supply and block the flow of intake air
Relieve all pressure in the fuel system
第8题：
operated manually once an hour
operated until the engine has started
placed into operation only at maximum load
adjustable to meet lubrication requirements
第9题：
quantity of air it takes in and retains in the cylinders during a given time period
proportion of trapped air that is utilized in the combustion process
thermodynamic efficiency of the engine cycle
all of the above
第10题：
turn engine with jacking gear
drain filters and strainers and bleed off water at each injection pump
use ether to start the engine with blow-down valves open
blow through the cylinders and fuel lines with a drying agent