Patent ID: 6561164
Filing Date: 2003-05-13
Classification: F02D,F02M

Abstract:
A method of calibrating an electric-actuated fuel injector for an engine that uses injector control pressure to inject the fuel from the injector into the engine, before the fuel injector is installed in the engine, the method comprising:electrically actuating the fuel injector with a predetermined electric actuation at a first predetermined injector control pressure and measuring the resulting quantity of fuel injected; electrically actuating the fuel injector with the predetermined electric actuation at a second predetermined injector control pressure and measuring the resulting quantity of fuel injected; and correlating the measured quantities, the predetermined injection control pressures, and the applied predetermined electric actuation with values of quantity of fuel injected, injector control pressure, and electric actuation that are related by a predetermined multiple term mathematical formula to ascertain, for the same quantities of injected fuel at each predetermined injector control pressure, difference between the applied predetermined electric actuation and that required by the formula.