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单选题In a diesel engine, blow-by（）A increase exhaust back pressureB causes excessive crankcase pressureC can only be detected by a compression checkD decreases fuel consumption

题目
单选题
In a diesel engine, blow-by（）
A

increase exhaust back pressure

B

causes excessive crankcase pressure

C

can only be detected by a compression check

D

decreases fuel consumption

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相似问题和答案

第1题：

单选题
Diesel oil may be used to cool （） of a diesel engine.
A

cylinders

B

exhaust valves

C

pistons

D

fuel valves


正确答案： D
解析： 暂无解析

第2题：

单选题
A supercharged diesel engine when compared to a similar naturally aspirated diesel engine, will develop an increase in （）
A

ignition lag

B

engine horsepower

C

lube oil system pressure

D

specific fuel consumption


正确答案： D
解析： 暂无解析

第3题：

Diesel engine blow-by is the leakage of combustion gases past the( ).

A.oil rings only

B.compression and scraper rings

C.cylinder liner sealing

D.cylinder liner ring grooves


正确答案：B
解析：scraper：刮刀;groove：槽
译文：柴油机漏气指的是燃气通过压缩环(气环)和刮油环泄漏。

第4题：

单选题
The size of the exhaust valve opening is （）
A

most critical in a four-stroke cycle diesel engine

B

most critical in a two-stroke/cycle diesel engine

C

most critical in a four-stroke/cycle diesel engine if it is turbocharged

D

of equal importance in a two-stroke/cycle diesel engine as in a four-stroke/cycle diesel engine


正确答案： A
解析： 暂无解析

第5题：

单选题
Starting a large low-speed propulsion diesel engine on diesel fuel during cold weather conditions, will be made easier by （）
A

increasing the quantity of starting air

B

increasing the lube oil pressure

C

heating the engine fuel supply

D

heating the engine coolant


正确答案： A
解析： 暂无解析

第6题：

单选题
As a heat engine,（） energy is the source of power by which the diesel engine can be operated.
A

electric

B

heat

C

mechanical

D

exhaust


正确答案： D
解析： 暂无解析

第7题：

单选题
In a diesel engine, excessive cylinder liner wear will cause （） (1) increased blow-by (2) wear between the piston ring and groove
A

(1) only is correct

B

(2) only is correct

C

both (1) and (2) are correct

D

neither (1) or (2) axe correct


正确答案： B
解析： 暂无解析

第8题：

单选题
The marine diesel engine is a type of diesel engine used on ships The （） of its operation is not very difficult to understand.
A

principle

B

principal

C

cause

D

case


正确答案： D
解析： 暂无解析

第9题：

单选题
Which of the listed diesel engine operating conditions should be checked immediately after any diesel engine is started?（）
A

Exhaust temperature

B

Lube oil level

C

Lube oil pressure

D

Water level in the expansion tank


正确答案： C
解析： 暂无解析

第10题：

单选题
In a diesel engine, blow-by is a result of combustion gases leaking into the crankcase past the （）
A

wrist pin bushings

B

compression rings

C

cylinder liner seals

D

cylinder liner sealing ring


正确答案： B
解析： 暂无解析

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