Fix the fuel injector into （） after repair.

相似题目

• A leaking diesel engine fuel injector will cause（）

  A . prolonged maintenance intervals B . improved atomization C . greater fuel economy D . incomplete combustio

  查看最佳答案

• As the plunger moves up, the ports are closed and the fuel （） and delivered to the injector nozzle at very high pressure.

  A . being compressed B . to be pumped up C . is pressurized D . are built u

  查看最佳答案

• Fuel injector的中文意思是（）。

  查看最佳答案

• In a diesel engine, the time taken to heat the fuel particles, turn them into vapor, and bring about combustion is called （）

  A . injection lag B . ignition delay C . compression D . turbulence lag

  查看最佳答案

• The amount of fuel delivered by a unit injector is controlled by the （）

  A . camshaft B . main spring C . rack position D . nozzle orifice size

  查看最佳答案

• Maintaining the close tolerances in diesel fuel pumps and injectors requires the use of（）.

  A . fuel/water separators B . day tanks C . injector test stand D . fuel filter

  查看最佳答案

• When the opening pressure of a diesel fuel injector is greater than that specified by the engine manufacturer，the （）

  A . quantity of fuel injected is decreased B . quantity of fuel injected will always be increased C . start of injection is advanced D . duration of injection will always be greater

  查看最佳答案

• The needle valve in the injector （） at a pre-set pressure which ensures that the fuel will atomize once it enters the cylinder.

  A . will lift B . will be lifted C . will close D . will be closed

  查看最佳答案

• Fuel injectors used in heavy fuel oil systems are usually provided with cooling to reduce（）.

  A . cold corrosion of the nozzles B . fuel viscosity for better atomization C . carbon accumulation on the nozzles D . fuel detonation in the cylinder

  查看最佳答案

• In a diesel engine, when the fuel is injected into the cylinder,（）

  A . the piston is just coming upward from the bottom dead center B . the piston has moved about one-fifth of the way up C . the piston has moved most of the way up and almost reached the TDC D . the piston has just past the TDC

  查看最佳答案

• The high-pressure fuel opens the fuel valve and is sprayed into the cylinder in tiny droplets known as （）.

  A . injection B . penetration C . atomization D . compressio

  查看最佳答案

• In a common rail engine, the fuel is injected into cylinders（）

  A . by injection pumps B . at a time decided by the injection pump timing C . by a signal opening the magnetic valves D . at a time decided by the cam directly

  查看最佳答案

• On a diesel engine, fuel is delivered into the combustion space by （）.

  A . a cooling system B . a lubrication oil system C . an electric system D . an injection system

  查看最佳答案

• Fuel has to be injected into the engine at a high pressure so that it （） correctly.

  A . is purified B . in timed C . is compressed D . atomize

  查看最佳答案

• The sequence of fuel injection into cylinders is determined by （）.

  A . the steering B . the driven gear C . the turning gear D . the timing gear

  查看最佳答案

• It should be evident that the amount of fuel injected into the cylinder is dependent on the position of the helix relative to the （）.

  A . inlet port B . exhaust port C . spill port D . scavenge port

  查看最佳答案

• Differential needle valves used in fuel injectors are directly closed by（）

  A . cam action B . spring force C . fuel oil pressure D . firing pressure

  查看最佳答案

• If the engine can be started and maneuvered on high viscosity fuel, the （）of the fuel reaching the injectors should be raised to such a point that the viscosity is less than the required value, ie27c St.

  A . pressure B . temperature C . viscosity D . density

  查看最佳答案

• The fuel injector injects a fine spray of fuel into the hot air and combustion （）, producing much high pressure in the gases.

  A . has begun B . takes place C . occurs D . happe

  查看最佳答案

• The plunger in the fuel injector pump, usually operated by a （）, is driven up and down when working.

  A . crankshaft B . camshaft C . piston rod D . rack and pinio

  查看最佳答案

• Generally speaking，the fuel injected into a marine diesel engine combustion chamber is ignited by（）.

  A . spark plugs B . glow plugs C . heat of compression D . a magneto

  查看最佳答案

• What is the term given to the process of breaking up fuel oil into very fine particles for better combustion?（）

  A . Settling B . Straining C . Spraying D . Atomizing

  查看最佳答案

• The amount of fuel injection into a diesel engine cylinder by a unit injector, is controlled by（）

  A . the firing pressure in the cylinder B . a metering helix inside the pump C . varying the physical length of the plunger stroke D . varying the clearance between the injector cam and the injector rocker arm

  查看最佳答案

• The fuel injector pump is operated by （） which drives the plunger up and down.

  A . a separate motor B . a cam C . a generator D . a chai

  查看最佳答案