Process and device for controlling a combustion engine measures pressure differential across exhaust gas return valve and compares with ideal value

摘要

A process for controlling a combustion engine having an exhaust gas return valve (118) to control the amount of returned gas comprises determining a value for the control based on the pressure differential across the valve in the exhaust gas pipe (116), comparing with an ideal value and thus calculating an adjustment to the valve. Independent claims are also included for the following: (a) a control device for the above process;and (b) a further process as above specifying an adjusting component