Electric Actuation of a Valve Based on Knowledge of the Closing Point and Opening Point of the Valve

摘要

A method for determining an effective injection time of a valve having a coil drive includes determining an opening time of the valve, determining a closing time of the valve, and determining the effective injection time of the electric actuation of the valve for an injection operation based on the defined opening time and the defined closing time.

主权项

1. A method for determining an effective injection time of a valve having a coil drive, the method comprising:
determining an opening time of the valve; determining a closing time of the valve; acquiring the effective injection time of the electric actuation of the valve for an injection process based at least on the determined opening time and the determined closing time, wherein the injection time is acquired by performing an iterative procedure for a sequence of different injection pulses, in which a correction value for the injection time of the electric actuation of the valve is determined for a future injection process as a function of: (a) a correction value for the injection time of the electric actuation of the valve for a preceding injection process, and (b) a time difference between (b1) a nominal effective injection time for the electric actuation of the valve, and (b2) an individual effective injection time for the electric actuation of the valve for the preceding injection process, wherein the individual effective injection time is obtained from the time difference between the start of the electric actuation of the valve for the preceding injection process and the determined closing time for the preceding injection process.