Cooling system for motor vehicle detects faulty positioning of cooling flow closure unit from variation with time of temperature difference between model and actual temperature variation

摘要

The system has a cooling air flow (K) closure unit (1) for optimizing engine (3) parameters, a sensor (6) for detecting engine temperature and a controller (7) for actuating the closure unit depending on engine temperature. The controller detects cooling water temperature changes, compares them with model changes and detects faulty closure unit positioning from the variation of the temperature difference between model and actual variations.