Broken intake valve springs on one cylinder of a diesel engine can cause the engine to （）

A、A.Over speed

B、B.fire improperly

C、C.lose oil pressure

D、D.overheatrapidly

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更多“Broken intake valve springs on one cylinder of a diesel engine can cause the engine to （）”相关的问题

第1题

[单选题] Air blowing from the intake air filter of an operating air compressor indicates （）.

A、broken inlet valves B、broken discharge valves C、pulsations in the air distribution system D、overloading of the air distribution system

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第2题

[单选题] In comparison to exhaust valves, intake valves of diesel engines may be fabricated from low alloy steels because （）.

A、the beveled edges of the intake valves provide for serf-centering during seating B、intake valves utilize stellite-coated valve seat inserts which reduce wear C、the volume of air passing through intake valves is less than the volume of air passing through exhaust valves D、intake valves are less affected to the corrosive action of exhaust gases

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第3题

[单选题] Which of the following problems could cause air to blow out through the inlet air filter of a running compressor?（）

A、Excessive compression in the cylinder B、A broken intake valve C、A dirty inlet filter element D、An improperly adjusted discharge valve

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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

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第5题

[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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第6题

[单选题] In a turbocharged four-stroke/cycle diesel engine, the exhaust valve remains open until after top dead center and the intake valve opens before top dead center to（）.

A、produce a scavenging effect in the combustion space B、equalize cylinder and exhaust manifold pressures C、alleviate the difference in valve size between the intake and exhaust D、flush out condensate that collects after each compression stroke

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第7题

[单选题] Excessive lube oil consumption can result from worn or broken（）

A、piston rings B、valve guides C、valve seals D、all of the above

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第8题

[单选题] Performance of a turbocharged engine can be improved by（）

A、decreasing the amount of valve overlap B、preheating the air intake C、after-cooling the intake air D、preheating light fuel

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第9题

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

A、A.Ⅰonly B、B.Ⅱonly C、C.bothⅠand Ⅱ D、D.neitherⅠnor Ⅱ