Patent ID: 9719453
Date: 2017-08-01
CPC Classifications: F02D,F02M

Claim:
1. A method for operating a valve having a coil drive, the method comprising: determining an opening time of the valve wherein the opening time measures a first duration from a first movement of the valve in an opening direction to an end of movement of the valve in an opening direction; determining a closing time of the valve wherein the closing time measures a second duration from the end of movement of the valve in an opening direction to a fully closed position 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: actuating the valve for a desired injection time based on the determined correction value.