Patent ID: 6681574
Filing Date: 2004-01-27
Classification: F02B,F04D,Y02T,Y10T

Abstract:
A method for controlling intake airflow to an internal combustion engine, said method comprising:providing an engine having an output shaft driven thereby, an intake air pipe, an exhaust gas pipe, a compressor located in the intake air pipe, a turbine located in the exhaust gas pipe, a transmission system connecting the turbine, the compressor, and the output shaft for energy transfer between the turbine and the compressor, between the turbine and the output shaft, and between the output shaft and the compressor, the transmission system comprising a variable transmission between at least two of the output shaft, the turbine and the compressor, and a control means for controlling the variable transmission; creating a first control signal as a function of the difference between an actual value and a desired value of a condition variable in the intake air pipe; creating a second control signal from an actual rotational speed of one of the compressor and the turbine; and creating a third control signal for controlling the variable transmission as a function of the first and the second control signals.