Patent ID: 11879399
Assignee: VITESCO TECHNOLOGIES GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 19:
20. A method, for an internal combustion engine including an intake camshaft equipped with a variable intake valve timing device including an intake timing actuator and an exhaust camshaft equipped with a variable exhaust valve timing device including an exhaust timing actuator, of detecting inverted connection of the intake timing actuator with the exhaust timing actuator, the method comprising:
measuring the angular position of the intake camshaft and the angular position of the exhaust camshaft;
commanding one of the two timing actuators that are the intake timing actuator and the exhaust timing actuator according to a respective setpoint and keeping the other of the two timing actuators immobile;
measuring the angular position of the intake camshaft and the angular position of the exhaust camshaft;
determining when the angular position of the camshaft corresponding to the commanded timing actuator has not been modified;
determining when the angular position of the camshaft corresponding to the immobile timing actuator is compatible with the setpoint; and
diagnosing the inverted connection and providing a diagnostic indicator when the angular position of the camshaft corresponding to the commanded timing actuator is determined to not have been modified, and when the angular position of the camshaft corresponding to the immobile timing actuator is determined to be compatible with the setpoint.