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单选题In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）A low firing pressureB low exhaust temperatureC mechanical knock in each cylinderD fuel knock in each cylinder

题目
单选题
In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with（）
A

low firing pressure

B

low exhaust temperature

C

mechanical knock in each cylinder

D

fuel knock in each cylinder

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相似问题和答案

第1题：

When fuel is injected late into a diesel engine cylinder_______.

A.the exhaust will be clear

B.fuel consumption will be low

C.all the fuel will be burned at top dead center

D.fuel consumption will be high


正确答案：D

第2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3题：

A smoking exhaust from an operating diesel engine could be caused by( ).

A.low sulfur content in the fuel

B.a loose injector inlet connection

C.late fuel injection

D.high injection pressure


正确答案：C
解析：sulfur/sulphur：硫;content：内容，含量
译文：运行中的柴油机冒黑烟，可能的原因是燃油喷射滞后。

第4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：

In a diesel engine, late fuel injection is indicated by black or gray exhaust smoke with ______.

A.low firing pressure

B.low exhaust temperature

C.mechanical knock in each cylinder

D.fuel knock in each cylinder


正确答案：A

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
If a single cylinder relief valve on a diesel engine lists frequently while the engine is running, the cause may be an （）
A

excessively late injection timing for each cylinder

B

incorrectly adjusted intake valve timing

C

incorrectly adjusted fuel injector

D

incorrectly adjusted intake valve clearance


正确答案： A
解析： 暂无解析

第10题：

单选题
Which of the conditions listed could cause the cylinder relief valves on a large, low-speed, propulsion diesel engine to lift?（）
A

Plugged injector nozzles

B

Excessive fuel injection

C

Very late injection timing

D

Incorrect crankshaft clearance


正确答案： B
解析： 暂无解析

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