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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更多“The intake valves in a diesel engine are reseated by （）.”相关的问题

第1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2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3题

[] Which of the listed design features is found in an exhaust valve and NOT in an intake valve?（）

A、A.Hard alloy steel construction B、B.Beveled edges on the valve head C、C.Low alloy steel construction D、D.Poppet type design

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第4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

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第5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6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7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