Patent ID: 6364625
Filing Date: 2002-04-02
Classification: F02M,F04F

Abstract:
A jet pump, in particular for transferring fuel in a motor vehicle fuel tank, the pump comprising a housing (10), a main nozzle (20) provided in the center of the housing and connected to receive a flow of fuel under pressure and a core (30) mounted in the housing downstream the output of the main nozzle to move relative to an outlet bore (240) of the main nozzle (20) wherein the pump further comprises spring means (40) which at rest, biases said core (30) in contact with the outlet bore of the main nozzle (20) so that when the pressure of the flow of fuel introduced into said main nozzle is under a predetermined level, said core is in contact with the output of the main nozzle and forbids any flow of fuel between said output of the main nozzle and the core, while when the pressure of the flow of fuel introduced into said main nozzle is above said predetermined level, said core is displaced at distance of the output of the main nozzle to allow a flow of fuel between said output of the main nozzle and the core.