Patent ID: 7769535
Filing Date: 2010-08-03
Classification: F02D,Y02T

Abstract:
1. Method for dosing fuel which is to be injected into a combustion chamber of an engine, with a fuel quantity dosed for an injector of the engine, the fuel quantity being divided into at least one pilot injection and a main injection for respective activation duration having activation duration corrective value, the method comprising: storing correlation data between fuel injection quantity and activation time under at least a state parameter of the injector, wherein the fuel injection quantity includes reference total injection quantities determined for predetermined operating states of the engine; determining a present operating state of the engine; placing the engine into one of the predetermined operating states; determining a present total injection quantity in the present operating state of the engine and a reference total injection quantity in the one of the predetermined operating states and in one of the at least a state parameter of the injector; and defining the respective activation duration corrective value for the pilot injections and the main injection in consideration of a difference between the reference total injection quantity and the present total injection quantity.