| 摘要 |
The invention relates to an electric delivery pump for delivering a fluid medium, in particular for delivering fuel in a fuel injection system. Said delivery pump comprises a pump unit and a drive unit which has a motor provided with a plurality of windings to which current can be applied, in particular in order to generate a rotating magnetic field, wherein the motor can be operated with an alternating current superimposed with a high-frequency proportion of electricity. The invention also relates to a method for operating an electric delivery pump, the windings of a motor of the electric delivery pump being subjected to an alternating current in such a manner that torque is generated on the motor. The alternating current is superimposed with a high frequency proportion of electricity in order to generate heat which is distributed by the windings. |
