The intake valves in a diesel engine are reseated by ().

题目
单选题
The intake valves in a diesel engine are reseated by ().
A

cam followers

B

push rods

C

combustion gases

D

valve springs

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相似问题和答案

第1题:

单选题
For an ordinary four-stroke diesel engine the exhaust valves close ().
A

after TDC

B

before TDC

C

after BDC

D

before BDC


正确答案: A
解析: 暂无解析

第2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3题:

Fuel is admitted to a diesel engine cylinder through the ______.

A.injector nozzles

B.carburetor

C.exhaust ports

D.intake valves


正确答案:A

第4题:

单选题
In a diesel engine, exhaust valves open before the intake ports are uncovered to () Ⅰ.reduce pumping losses Ⅱ.reduce back pressure
A

Ⅰonly

B

Ⅱonly

C

bothⅠand Ⅱ

D

neitherⅠnor Ⅱ


正确答案: B
解析: 暂无解析

第5题:

单选题
Air scavenging of a diesel engine cylinder()
A

blows out the exhaust gases

B

supplies oxygen for combustion

C

cools the valves and cylinder walls

D

all of the above


正确答案: C
解析: 暂无解析

第6题:

单选题
The function of the after-cooler installed between the turbocharger and intake manifold on some diesel engine, is to ()
A

increase the density of the intake air

B

decrease turbocharger power usage

C

reduce exhaust gas temperature

D

compensate for turbocharger PRM fluctuations


正确答案: D
解析: 暂无解析

第7题:

单选题
Intake air flow from a diesel engine turbocharger is directly proportional to engine()
A

exhaust gas pressure

B

exhaust gas temperature

C

speed

D

load


正确答案: D
解析: 暂无解析

第8题:

A Kort nozzle is a(n) ______.

A.hollow tube surrounding the propeller used to improve thrust

B.nozzle attached to a firefighting hose

C.intake valve on a diesel engine

D.piston cylinder on a diesel engine


正确答案:A
Kortnozzle(科特导流管)是中间空心的,在螺旋桨周围的用来提高侧推力的导流管。

第9题:

单选题
In a four-stroke cycle diesel engine the intake valves open ()
A

before TDC and close after BDC

B

after TDC and close after BDC

C

before TDC and close before BDC

D

after TDC and close before BDC


正确答案: A
解析: 暂无解析

第10题:

单选题
Poor combustion in a diesel engine can be caused by ().
A

high compression pressure

B

low intake air temperature

C

low exhaust pressure

D

high scavenge air temperature


正确答案: D
解析: 暂无解析

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