海船船员考试

单选题Diesel engine piston ring blow-by is usually caused by excessive ring clearance at the ring（）A backB sideC gapD bottom

题目
单选题
Diesel engine piston ring blow-by is usually caused by excessive ring clearance at the ring（）
A

back

B

side

C

gap

D

bottom

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相似问题和答案

第1题：

单选题
In large, low-speed, main propulsion diesel engine, position ring groove wear usually occurs at the（）
A

top of the ring groove

B

back of the ring groove

C

bottom of the ring groove

D

piston ring end clearance


正确答案： C
解析： 暂无解析

第2题：

单选题
In some diesel engine designs,（）the injection of cylinder oil is timed to impinge when the piston and only impinge on（）
A

is coming upward；cylinder ring belt

B

is going downward；piston ring belt

C

is coming upward；piston ring belt

D

is going downward；cylinder ring belt


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
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5题：

单选题
In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring groove
A

Ⅰ only

B

Ⅱ only

C

both Ⅰ and Ⅱ

D

neither Ⅰ nor Ⅱ


正确答案： D
解析： 暂无解析

第6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7题：

单选题
A diesel engine piston ring face is in direct contact with the （）.
A

top of the ring groove

B

cylinder liner oil film

C

bottom of the ring groove

D

back of the ring groove


正确答案： B
解析： 暂无解析

第8题：

In a diesel engine, when refitting piston rings you should ①check the ring gap at the smallest diameter of the cylinder ②remove carbon from the ring groove

A.①

B.②

C.①②

D.neither ① nor ②


正确答案：C

第9题：

单选题
A condition contributing to diesel engine piston rings sticking in the ring grooves, is insufficient ring clearance at the ring（） Ⅰ.gap Ⅱ.side
A

Ⅰonly

B

Ⅱ only

C

both Ⅰ and Ⅱ

D

neither Ⅰ nor Ⅱ


正确答案： A
解析： 暂无解析

第10题：

单选题
In a four-cycle diesel engine piston blow-by can result in increased（）
A

crankcase pressure

B

compression pressure

C

scavenge pressure

D

exhaust manifold pressure


正确答案： A
解析： 暂无解析

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