Patent ID: 11933423
Assignee: ROBERT BOSCH GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H | IPC F

Claim 8:
9. A processing unit configured to determine a switching point of a solenoid valve, in which a solenoid coil is energized to raise a solenoid armature to unblock a flow opening, the method comprising the following steps:
determine, for a signal profile characteristic of a current profile in the solenoid coil, multiple periods each different from one another and each having the same predefined temporal length;
ascertain, within each period of the periods, a minimal and a maximal value of the signal profile and associated points in time;
ascertain a product of a difference between the maximal and minimal value and a difference between the associated points in time; and
determine the switching point based on the associated points in time of the minimal and maximal value of that period of the periods which corresponds to the maximal value of the product.