Patent ID: 6068456
Filing Date: 2000-05-30
Classification: F02M,F04D

Abstract:
An electric motor turbine-type fuel pump comprising:a housing;a pump body in the housing and having an arcuate pumping channel, a fuel inlet adjacent one end of the channel and a fuel outlet adjacent the other end of the channel;a rotor having a plurality of circumferentially spaced vanes defining a plurality of circumferentially spaced pockets communicating with the pumping channel;an electric motor connected with the rotor to rotate the rotor to draw fuel through the fuel inlet into the pumping channel and to discharge fuel from the fuel outlet under pressure; andthe pumping channel is generally uniformly tapered and decreases in cross-sectional area from closely adjacent the fuel inlet of the pumping channel to at least midway of the arcuate extent between the inlet and the outlet of the pumping channel, andthe pumping channel has a cross sectional area closely adjacent its fuel inlet which is between about 10% to 60% greater than the cross sectional area adjacent the fuel outlet of the pumping channel.