海船船员考试

单选题When fuel is injected late into a diesel engine cylinder,（）.A the exhaust will be clearB fuel consumption will be lowC all the fuel will be burned at top dead centerD fuel consumption will be high

题目
单选题
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

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相似问题和答案

第1题：

One cylinder of a diesel engine is persistently knocking and does not cease(停止) when the fuel supply to that cylinder is secured.Which of the following problems may be the cause?

A.Low loading of the cylinder

B.Excessive cooling of that piston

C.Sluggish ring action on the piston

D.A mechanical defect in a working part


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：

Fuel droplets injected into a diesel engine cylinder must have adequate penetration to ____.

A.prolong the ignition delay period

B.ensure the beginning of fuel injection

C.thoroughly utilize the air charge

D.allow controlled fuel combustion


正确答案：C

第4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5题：

单选题
Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.
A

spark plugs

B

glow plugs

C

heat of compression

D

a magneto


正确答案： A
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
Fuel oil discharged to the diesel engine cylinder is atomized at the （）
A

turbocharger

B

injection nozzle tip

C

carburetor

D

fuel oil pump


正确答案： B
解析： 暂无解析

第8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9题：

单选题
A practical way of checking for excessive fuel injection in one cylinder of an operating diesel engine is to （）
A

feel the high pressure fuel line

B

check the cylinder exhausts for white smoke frequently

C

check the cylinder exhaust temperature

D

isolate each cylinder and inspect the injector


正确答案： A
解析： 暂无解析

第10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

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