Patent ID: 8511153
Filing Date: 2013-08-20
Classification: F02D,F02M

Abstract:
1. A method for determining an injection law of a fuel injector ( 4 ) to be tested in an injection system ( 3 ) that includes a plurality of fuel injectors ( 4 ), a common rail ( 5 ) feeding fuel under pressure to the injectors ( 4 ), and a fuel pump ( 6 ) that keeps the fuel under pressure inside the common rail ( 5 ), said method comprising steps of: completely interrupting the feeding of the fuel from the fuel pump ( avoiding opening of all of the fuel injectors ( measuring initial pressure (Pi) of the fuel inside the common rail ( opening the fuel injector ( measuring final pressure (P determining a pressure drop (ΔP) in the common rail ( estimating, according to the pressure drop (ΔP) in the common rail ( calculating a fuel quantity (Q) that is actually injected by the fuel injector (