Abstract: The disclosure relates to an internal combustion engine having multiple camshaft control units which are connected to one another in a line by a first network topology and via which a crankshaft signal can be transmitted in unprocessed, amplified or conditioned form. The camshaft control units are designed to suppress forwarding of the crankshaft signal in a first state and to forward or to replicate the crankshaft signal and to send an additional signal in a second state. The disclosure also relates to a method for logically assigning the camshaft control units to the camshafts to be adjusted by them.

Abstract: The disclosure relates to an internal combustion engine having multiple camshaft control units which are connected to one another in a line by a first network topology and via which a crankshaft signal can be transmitted in unprocessed, amplified or conditioned form. The camshaft control units are designed to suppress forwarding of the crankshaft signal in a first state and to forward or to replicate the crankshaft signal and to send an additional signal in a second state. The disclosure also relates to a method for logically assigning the camshaft control units to the camshafts to be adjusted by them.

Abstract: A method for simulating malfunctioning solenoid valves is disclosed. A current flows through a solenoid valve in order to achieve opening and closing. The closing is forced after the current supplied to the solenoid valve is activated at an activation time, and the opening is forced after the current is deactivated. The current is applied with a charging current strength before activation for a charging phase, and after activation, the current is increased to peak current strength and subsequently reduced to a holding current strength. The current strength is reduced to a deactivation current strength, after which the current strength increases again. A variation of the value or duration of the current strength or an application of an additional magnetic force is used to simulate a premature activation, a delayed activation, a premature deactivation, or a delayed deactivation.

Abstract: The invention relates to a method for simulating malfunctioning solenoid valves for an internal combustion engine by influencing an activation time and a deactivation time of the solenoid valve. A current with a specified modifiable current strength flows through the solenoid valve in order to achieve an opening and closing process. The closing process is forced after the current supplied to the solenoid valve is activated at the activation time, and the opening process is forced after the current supplied to the solenoid valve is deactivated at the deactivation time. The current is applied with a charging current strength prior to the activation time for the duration of a charging phase, and after the activation time, the current is increased to peak current strength and subsequently reduced to a holding current strength.