Pump e.g. internal gear pump, for use in fuel injection system for e.g. conveying fuel into combustion chamber of internal combustion engine of car, has electric motor including stator partially arranged within cylinder

摘要

The pump has an impeller (5) provided with a conveying element and arranged within a limiting part (10). A working chamber (11) is formed between the impeller and the limiting part. An electric motor (2) is provided with a stator (14) and a rotor (15) for driving the pump, where the stator is partially arranged within a cylinder. An axis (13) of the cylinder corresponds to an axis (6) of the impeller, and a radius of the cylinder corresponds to maximal distance of the axis of the impeller to the impeller. A permanent magnet (16) is arranged at the impeller.