海船船员考试

单选题Faulty operation of diesel engine fuel injection nozzles can be directly caused by （）.A water in the fuel oil supplyB excessive fuel nozzle holder coolingC a distorted fuel spray patternD leakage past the plunger into the oil drain

题目
单选题
Faulty operation of diesel engine fuel injection nozzles can be directly caused by （）.
A

water in the fuel oil supply

B

excessive fuel nozzle holder cooling

C

a distorted fuel spray pattern

D

leakage past the plunger into the oil drain

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相似问题和答案

第1题：

One cause of diesel engine surging can be a result of ______.

A.injection pump plungers stuck or worn

B.low compression

C.solenoid stuck open

D.fuel tank too full


正确答案：A

第2题：

单选题
Heat damage to fuel injection nozzles on small high-speed diesel engines, can be prevented by（）
A

employing fuel oil as a cooling medium

B

preventing hard carbon deposit on nozzle tips

C

avoiding fuel oil temperature exceeding builder’s specification

D

ensuring good metallic contact between nozzles and cylinder heads


正确答案： D
解析： 暂无解析

第3题：

One of the factors limiting the amount of toad which can be put on a modem marine diesel engine is the_______.

A.governor sensitivity

B.exhaust temperature

C.fuel injection pressure

D.speed of the cam shaft


正确答案：B

第4题：

单选题
Heat damage to fuel injection nozzles can be prevented by avoiding （）
A

excessive fuel oil temperature

B

long periods of engine overload

C

metallic contact between nozzles and cylinder heads

D

hard carbon deposit and varnish on the nozzles


正确答案： B
解析： 暂无解析

第5题：

单选题
Problems with the diesel engine fuel injection pump are usually caused by（）
A

improper adjustment

B

contaminated fuel

C

kinked fuel lines

D

excessive engine vibration


正确答案： C
解析： 暂无解析

第6题：

单选题
When the opening pressure of a diesel fuel injector is greater than that specified by the engine manufacturer，the （）
A

quantity of fuel injected is decreased

B

quantity of fuel injected will always be increased

C

start of injection is advanced

D

duration of injection will always be greater


正确答案： C
解析： 暂无解析

第7题：

单选题
The burning of fuel oil in a diesel engine having a high sodium content, will cause （）
A

corrosion and grooving of exhaust valves

B

corrosion and gumming of the fuel injection pump

C

salt deposits in the exhaust manifold

D

slag deposits in the fuel injection equipment


正确答案： A
解析： 暂无解析

第8题：

_______can be a direct cause of faulty operation of diesel engine fuel injection nozzles.

A.Excessive fuel nozzle holder cooling

B.Sediment in the fuel supply

C.Distortion of the fuel spray pattern

D.Improper atomization of the fuel


正确答案：B

第9题：

单选题
When the opening pressure of a diesel engine fuel injector is greater than that specified by the engine manufacturer, which of the following problems can be expected?（）
A

Quantity of fuel injected tends to be decreased

B

Quantity of fuel injected will always be increased

C

Start of injection tends to be advanced

D

Duration of injection will always greater


正确答案： A
解析： 暂无解析

第10题：

单选题
Late fuel oil injection in a diesel engine can result in （）
A

fuel knock

B

increased power

C

low compression pressure

D

high exhaust temperature


正确答案： D
解析： 暂无解析

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