Improvements in the design of fuel feed pumps

摘要

The invention relates to a number of improvements introduced in the design of fuel feed pumps and consisting, on the one hand, of a special configuration of the stator body and of the stator cover, as well as of the rotor accommodated therebetween, for the purpose of producing two pumping-up stages which follow one another and of which the first is a centrifugal and driving type and the second an exclusively driving type, while on the other hand they consist of a modular design of the pump which permits the sequential coaxial coupling, inside a tubular housing, of the stator body, rotor, stator cover, electric motor and upper body, with the result that after the installation of the abovementioned parts the housing is closed by means of flanging its end sides, thus axially fixing all the parts contained therein.