If the needle valve in a fuel injection nozzle sticks open （）.

A、A.no fuel will be delivered through the nozzle

B、B.the nozzle will overheat and crack

C、C.time of injection will change

D、D.fuel will leak into the drain line

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更多“If the needle valve in a fuel injection nozzle sticks open （）.”相关的问题

第1题

[单选题] During the fuel injection period, fuel pressure must exceed cylinder gas pressure to （）.

A、ensure penetration and distribution of the fuel in the combustion chamber B、ensure the needle valve is flushed clean during each injection C、prevent combustion gas blowback into the open needle valve D、prevent reflected pressure waves when the needle valve closes

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第2题

[单选题] If a hydraulic governor has been refilled with oil, the engine should be operated until it reaches normal temperaturethen the air should be purged, and the（）

A、rack position should be adjusted B、compensating needle valve should be opened fully compensating C、needle valve should be adjusted to stabilize operation D、speed limiting device should be adjusted

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第3题

[单选题] The needle valve in a fuel valve will （） when the fuel pressure action on the needle valve tapered face exerts a force lower than that of the spring compression.

A、be jammed B、be opened C、be seated D、be broken

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第4题

[单选题] The needle valve will open when the fuel pressure acting on the needle valve （） exerts a sufficient force to overcome the spring compression.

A、tape face B、tapered face C、surface D、thinner face

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第5题

[单选题] If a main propulsion diesel engine hunts excessively at idle speed, you should （）

A、adjusts the idle speed control B、drain and flushes the governor and replace the oil C、adjusts the compensating needle valve