Patent ID: 6820588
Filing Date: 2004-11-23
Classification: F02D,Y02T

Abstract:
A method for controlling an internal combustion engine having a fuel-injection system, wherein each fuel injection pulse for a combustion chamber during a working stroke is configured to include at least one additional quantity of pre-injected and/or at least one quantity of post-injected fuel in addition to a main injection quantity at an intended injection instant, comprising:assigning a control system to the internal combustion engine, the control system comprising: a pedal value sensor (106) for capturing a current accelerator pedal value (VFP), and a rotational speed sensor for capturing a current rotational speed of the internal combustion engine; determining a preferred torque for the clutch-side end of a crankshaft from the accelerator pedal value and from the rotational speed; and deriving at least one actuating signal for at least one actuator of the internal combustion engine from the preferred torque, wherein during a pre-injected fuel mass which is supplied to the combustion chamber at an earlier instant than a main-injection mass, a correction to the torque-determining total fuel mass performed, wherein a value for a time or phase difference between injection start or injection end of the pre-injection and injection start or injection end of the main injection is taken into consideration in an assigned correction factor, and during a post-injected fuel mass which is supplied to the combustion chamber at a later instant than the main-injection mass, a correction to the torque-determining total fuel mass performed, wherein a value for a time or phase difference between injection start or injection end of the main injection and injection start or injection end of the post-injection is taken into consideration in an assigned correction factors.