Pump test-bed components
The lower end of the fuel injection pump test pillar stopper on plunger spring compression on the follower's total into tappet body through roller pressure on the () on the CAM CAM.When jacking CAM tappet make column line, compression diesel forced leave delivery valve seat, after high-pressure tubing pressure spray nozzle into the cylinder;Plunger rise after stroke more than effective stroke, fortress drainage needle slot and plunger sleeve column bottom edge of the oil return hole are interlinked, oil supply end.
Fuel injection pump plunger lotus root piece's function is to improve the diesel oil pressure, in order to meet the requirements of nozzle jet pressure, control oil and fuel supply time.Plunger disaster is an important part in fuel injection pump assembly.
Electromagnetic valve of high-pressure pump test-bed control injector to replace the traditional mechanical fuel injector, fuel pressure in the fuel rail produced by a radial plunger type high-pressure pump, pressure size has nothing to do with the rotating speed of engine, it can be set freely in a certain range.
The experiment of the spray nozzle validator, is a professional testing nozzle validator is leaking.Its steps is to press a pressure rod, make the fuel injector fuel injection, to observe the injector assembly fuel injection spray, spray oil should be small, uniform, no oil flow to the naked eye can see, after the jet injectors no oil legacy or drops oil phenomenon.
Due to nozzle validator is mainly used in oil pump oil nozzle manufacturers and maintenance debugging, and because factory production is booming, therefore, requires the nozzle validator to high degree of automation, such as fuel injection pump loading fixtures quickly and fast injection amount and digital measurement, etc.