Leaky exhaust valve will result in which of the following?（） (1) high exhaust temperature; (2) low compression pressure; (3) low firing pressure.

A、(1) and (2)

B、(1) only

C、(2) only

D、(1),(2) and (3)

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更多“ Leaky exhaust valve will result in which of the following?（） (1) high exhaust temperature; (2) low compression pressure; (3) low firing pressure.”相关的问题

第1题

[] When one cylinder has a lower compression pressure and higher exhaust gas temperature than any of the other engine cylinders, which of the conditions listed will indicated?（）

A、A.Advanced ignition B、B.Clogged air intake C、C.Leaky exhaust valve D、D.High exhaust pressure

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第2题

[单选题] The loss of the diesel engine cylinder air charge through leaky valves, piston rings, worn or scored liners, would be indicated by which of the following sets of conditions?（）

A、Low compression pressure and high exhaust temperature B、Low firing pressure and high exhaust temperature C、Low compression pressure and low exhaust temperature D、Low firing pressure and low exhaust temperature

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第3题

[单选题] In some type of two-stroke engines, besides some small holes for（）, starting valve, safety valve, indicator cock, and central opening in each cylinder cover for mounting the（）

A、fuel valves；exhaust valve B、exhaust valves；inlet valve C、fuel valves；inlet valve D、exhaust valves；fuel valve

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第4题

[单选题] Fuel has been injected but ignition fails The possible cause may be （）.

A、leaky exhaust valve B、increased scavenging air temperature C、engine cylinders not scavenged sufficiently D、water in the fuel oil

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第5题

[单选题] Excessively low air pressure occurring in the intercooler of a reciprocating air compressor is caused by（）.

A、leaky discharge valves on the LP cylinder B、leaky discharge valves on the HP cylinder C、insufficient intercooler cooling D、low ambient air pressure

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第6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7题

[单选题] A diesel engine experiences a sudden loss in speed, accompanied by black exhaust smoke, with the fuel rack at maximum, and speed remaining below normal the probable（）

A、engine overload B、leaky valves C、stuck or broken piston rings D、low air injection pressure

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第8题

[单选题] Which of the following would not cause high suction pressure?（）

A、insufficient refrigeration B、leaky suction valves C、expansion valve stuck open D、suction valve not adjusted properly

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第9题

[单选题] The period when both inlet valves and exhaust valves are open is referred to as （）.

A、valve loop B、valve uniflow C、valve overlap D、valve grinding