Patent ID: 6354276
Filing Date: 2002-03-12
Classification: F02M,Y10T

Abstract:
A method for adjusting a fuel injection system, said fuel injection system including:a fuel injection valve including a valve member and a nozzle, said valve member opening and closing said nozzle; a spring means for urging said valve member toward a direction where said valve member closes said nozzle; a coil attracting said valve member against an urging force of said spring means; an adjusting pipe contacting said spring means and adjusting the urging force of said spring means; a pump supplying a fluid into said fuel injection valve; a pressure gage measuring a pressure of the fluid; a flow meter measuring a flow amount of the fluid; a pressure regulator regulating the pressure of the fluid; a motor adjusting an insertion amount of said adjusting pipe; and a controller controlling to supply electric currents into said coil and said motor; the method for adjusting the fuel injection system comprising: controlling to supply the electric currents into said coil and said motor, for adjusting the insertion amount of said adjusting pipe and changing the electric current supplied into said coil such that the flow amount of the fluid is kept substantially constant, and adjusting the insertion amount of said adjusting pipe such that the electric current supplied into said coil becomes a target electric current.