Patent ID: 7607417
Filing Date: 2009-10-27
Classification: F02D,F02M,G05D

Abstract:
1. A method for controlling an internal combustion engine having a fuel supply device and an actuator, the fuel supply device being provided with a low-pressure circuit, a high-pressure pump coupled on the inlet side to the low-pressure circuit, which pump transports fuel to a fuel accumulator, and a control valve for a volumetric flow which is allocated to the high-pressure pump, the method comprising: determining using an electrically-connected control device an estimated value of the drive torque of the high pressure pump depending on the fuel pressure in the fuel accumulator; determining using the control device a loss torque depending on the estimated value for the drive torque of the high-pressure pump and additional loss-torque fractions, wherein the additional loss-loss torque fractions are dependent on an engine speed and additional operating variables; determining using the control device a target torque depending on the loss torque; and generating using circuitry an actuating signal for controlling an actuator of the internal combustion engine depending on the target torque.