A method for operating a positive displacement pump as well as a certain positive displacement pump for this purpose.

摘要

The present invention relates to a method for operating a, for example, for a twin-clutch transmission of a motor vehicle certain positive displacement pump (1) for generating a scarf tol pressure as constant as possible. The driving power of an electric drive mechanism (2), by means of a power transmission unit (3) to a displacer pumping unit (4) transmit. According to the invention, the in the operation of the drive (2) occurring, one with a phase offset (6) in phase opposition to the structurally dictated fluctuations in a sinusoidal course (7) of a delivery rate of the displacer pumping unit (4) is superimposed on. This results in phase opposition in the case of an optimum superposition of the fluctuations and vibrations, a highly smoothed pressure curve (8) a small amplitude of the with the positive displacement pump (1) volume flow conveyed by means of which, in particular, unwanted noise development, are avoided.