燃料关断阀（fuel stop valve）
燃料关断阀（fuel stop valve）
相关考题：
If the engine does start on air, but combustion does not immediately begin, the cause may be _____.A.failure of the fuel pumpsB.starting air pressure too lowC.stop valve in air line closedD.the turning gear still engaged
What type of valve is used to direct the flow of hydraulic fluid?A.relief valveB.direction control valveC.stop valveD.pressure control valve
燃机跳闸时下列说法正确的是（）。A、安全油泄压，导致燃料关断阀、燃料压力控制阀和流量控制阀立即关闭B、安全油泄压，导致燃料关断阀和压力控制阀立即关闭C、安全油泄压，导致燃料关断阀和流量控制阀立即关闭
单选题A check valve is another name for （）.Aa test valveBan inspection valveCa stop valveDa non-return valve
单选题The primary function of a fuel delivery check valve assembly is to（）Adeliver proper fuel quantity to the injection nozzleBprovide rapid fuel injection cutoffCcontrol fuel quantity entering the pump bodyDcontrol fuel pressure delivered to the combustion chamber
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.Abe jammedBbe openedCbe seatedDbe broken
单选题A common trouble with the fuel pump plunger or fuel valve spindle is （）.Awater leakageBsteam leakageCoil leakageDair leakage
单选题The（） is fitted in pair one is the main valve, the other the auxiliary or standby.Amain stem stop valveBauxiliary steam stop valveCfeed check or control valveDblow down valve
单选题燃机跳闸时下列说法正确的是（）。A安全油泄压，导致燃料关断阀、燃料压力控制阀和流量控制阀立即关闭B安全油泄压，导致燃料关断阀和压力控制阀立即关闭C安全油泄压，导致燃料关断阀和流量控制阀立即关闭
单选题Fire protection regulations for towing vessels require any fuel line subject to internal head pressure from fuel in the tank to（）.Abe fitted with a positive fuel shut-off valve located at the tankBhave a shut-off valve at the top of the tankChave a gate valve easily accessible in the space where the tank is locatedDhave a drain cock at the lowest point in the fuel line
单选题During the fuel injection period, fuel pressure must exceed cylinder gas pressure to （）.Aensure penetration and distribution of the fuel in the combustion chamberBensure the needle valve is flushed clean during each injectionCprevent combustion gas blowback into the open needle valveDprevent reflected pressure waves when the needle valve closes
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.Atape faceBtapered faceCsurfaceDthinner face
单选题The（） is a smaller valve fitted in the auxiliary steam supply line, and is usually of the non-return type.Amain stem stop valveBauxiliary steam stop valveCfeed check or control valveDblow down valve
单选题Why is it important for fuel oil tanks not to be topped off at the inner bottom level when loading on a cold day?（）AIncreased viscosity of the product needs higher loading pressure, which increases the chances of a spillBAir pockets may cause the fuel to bubble out of the ullage holeCThe temperature rise of the fuel will cause an overflowDFueling valve may become stuck closed and cause the fuel oil to spill before the valve can be opened
单选题Valve lash, or clearance refers to the （）Aclearance between the top of the valve stem and the rocker armBcompression of the valve springsCclearance between the valve seat inserts and the headDout of roundness of the fuel injection cams
单选题A fuel injection valve opening at pressure lower than normal will result in（）.Alate fuel injectionBearly fuel injectionChigh exhaust temperature from that cylinderDdecreased effective stroke from that injector
单选题The purpose of the delivery check valve used in a diesel fuel injection jerk pump is to （）.Aassist in a quick cutoff of fuel injectionBallow oil backflow from the injector to the helixCreduce fuel oil pressure between injection strokesDmeter the quantity of fuel delivered
单选题The direct acting mechanical governor used with some small diesel engines, controls fuel flow to the engine by（）Agovernor flyweight action on a pilot valve which controls fuel injectionBgovernor flyweight motion acting on fuel controls through suitable linkageCpositioning a butterfly valve in the fuel delivery system positioningDa servomotor piston attached to the fuel controls
单选题The solenoid valve can be typed as a（）Athermal valveBmagnetic stop valveCbellows valveDbimetallic valve
单选题A common trouble with the fuel pump plungers or fuel valve spindle is （）.Abroken downBstuckCoil leakageDcarbonized