Control system for recirculation of i.c. engine exhaust gases comprises central computer calculating recorded gas recirculation value as function of engine operating point and control part for exhaust gas recirculation valve displacement

摘要

The system for controlling the quantity of re-circulated exhaust gas comprises a central computer (28) for calculating a recorded value of the re-circulated exhaust gas as a function of the operating point of the engine. There is a control part for the displacement of an exhaust gas recirculation valve (26) which is displaced as a function of the recorded value in order to position the valve. The movement of the valve displacement control part comprises a first movement part for the control of the valve displacement and a second movement part for the displacement of a fresh air inlet control valve (30). An Independent claim is included for a method for controlling the exhaust gas recirculation.