單項(xiàng)選擇題Dirt lodged on the nozzle valve seat of a fuel injection nozzle will cause()

A.erosion and cratering of the nozzle orifices
B.fuel leakage into the nozzle drain line
C.fuel leakage before and after injection
D.insufficient fuel delivery though that nozzle


您可能感興趣的試卷

你可能感興趣的試題

1.單項(xiàng)選擇題Diesel engine cylinder head test cocks are used to ()

A.check cylinder lubrication
B.connect the pressure indicator pressure
C.test cylinder heads
D.connect the exhaust gas pyrometers

2.單項(xiàng)選擇題Which of the following statements is correct regarding a turbocharged four-stroke/cycle diesel generator?()

A.At zero load the intake manifold pressure is greater than the exhaust manifold pressure
B.At full load the intake manifold pressure and exhaust manifold pressure are equal
C.At full load the intake manifold pressure is less than the exhaust manifold pressure
D.At full load the intake manifold pressure is greater than the exhaust manifold pressure

3.單項(xiàng)選擇題Lubricating oil viscosity in an operating diesel engine can be reduced by()

A.increasing cooling water flow
B.increasing lube oil flow
C.dilution by fuel oil
D.adding SAE 70 oil

4.單項(xiàng)選擇題A defective injector nozzle in a propulsion diesel engine can cause()

A.engine power losses
B.smoking due to unburned fuel
C.high exhaust temperature readings
D.all of the above

5.單項(xiàng)選擇題The major cause of problems occurring with fuel injection equipment is()

A.incorrect replacement of barrels and plungers of jerk pumps
B.overheating of the nozzle orifices
C.cracked pump housings
D.dirt in the fuel

最新試題

For a given exhaust gas boiler, what is the quantity of its evaporation mainly determined?()

題型:?jiǎn)雾?xiàng)選擇題

One of the reasons that cause oil flowed from sludge outlet of a self-cleaning separator is()

題型:?jiǎn)雾?xiàng)選擇題

During the diesel engine running, the water level of F.W expansion tank should normally kept in the () level of glass tube.

題型:?jiǎn)雾?xiàng)選擇題

Thermostatic steam pressure reducing valves are used in the fuel oil service system to control the()

題型:?jiǎn)雾?xiàng)選擇題

When does auxiliary burner of incinerator put into operation? ()Ⅰ. start incinerator when it is coldⅡ. the sludge for dealing with is littleⅢ. the sludge for dealing with is largeⅣ. the water and impurity in sludge are too muchⅤ. the temperature in incinerator is lowⅥ. dealing with little solid rubbish

題型:?jiǎn)雾?xiàng)選擇題

Which of the following items don’t belong to dock repair works?()

題型:?jiǎn)雾?xiàng)選擇題

A purge recovery system is used in a centrifugal air conditioning or refrigeration system to ()

題型:?jiǎn)雾?xiàng)選擇題

Engine parameters shall be corresponded to NOx Technical Files. This is required by ()

題型:?jiǎn)雾?xiàng)選擇題

The treatment of the fuel oils involves storage, heating, filtering and()

題型:?jiǎn)雾?xiàng)選擇題

As soon as a diesel engine has started, which of the listed engine operating parameters should be checked FIRST?()

題型:?jiǎn)雾?xiàng)選擇題