| 摘要 |
A method is provided for ascertaining the fuel quality in an internal combustion engine, in particular of a motor vehicle, in which it is provided, in particular, that a two-stage zero quantity calibration is carried out, in which, in the first stage, a test injection is carried out with a control duration and a first quantity correction is generated, and, in the second stage, two test injections are carried out with the mentioned control duration, whose time interval is selected in such a way that the influence of a pressure wave which is generated by the first test injection on the second test injection is preferably low, and a second quantity correction is generated on the basis of the two test injections, and the first quantity correction and the second quantity correction are compared with one another and the fuel quality is inferred from the result of the comparison. |
