Patent ID: 6098592
Filing Date: 2000-08-08
Classification: F02D,F02P,Y02T

Abstract:
A method for controlling an internal combustion engine having an ignition angle and having a given number of cylinders to which an air charge is supplied during operation of the engine, the method comprising the steps of:providing a desired value (misol) for the torque of said engine;determining the number of cylinders with which said engine is driven in dependence upon the operating state of said engine;influencing the number of cylinders, which are active, during a transition from a mode of operation wherein a first number of said cylinders are active into a mode of operation with a second number of said cylinders (redsoll), which are active;adjusting the air charge on the basis of said desired value (misoll) and said second number of said cylinders (redsoll);determining the ignition angle (zwsol) in dependence upon the deviation of said desired value (misol) for said torque of said engine from the actual value (mind, mieza) of the torque thereof in the context of a control of said actual value (mind, mieza) to said desired value (misol); and,said actual value (mind, mieza) of said torque taking into consideration the adjusted air charge (miopt) and the actual number of cylinders (redst) which are active.