Walbro Corporation

Elton J Fisch

Edward J Talaski

Kevin L Israelson

Jeffrey D Hanby

Douglas W Salowitz, Jr

Cyrus M Healy

Kenneth J Cotton

Roger N Smith

Gerald J LaMarr, Jr

Robby L Linton

David D Hacker

Darin R Billot

Travis P Baur

Eric D Anderson

In at least some implementations, a fuel pump assembly includes a first fuel pump and a second fuel pump that each have an electric motor, a pumping element driven by the motor, an inlet and an outlet through which fuel is discharged. The assembly also includes a passage communicated with the outlet of the first fuel pump and with the outlet of the second fuel pump, a fuel outlet in communication with the passage and through which fuel exits the fuel pump assembly, and a valve having an inlet in communication with the passage between the outlet of the first fuel pump and the outlet of the second fuel pump. The valve also having an outlet through which fuel exits the passage and a valve body that controls fuel flow through the valve.

Multiple pump fuel system

In at least some implementations, an assembly includes a reservoir, a primary fuel pump having an inlet in communication with the reservoir's internal volume, an outlet, a motor and a pumping element driven by the motor and a secondary fuel pump with a body having first and second inlets and an outlet. The first inlet receives fuel from the primary fuel pump and a nozzle is communicated with the first inlet and fuel flows out of the nozzle into the body via the first inlet. The second inlet is in communication with the reservoir inlet, and the outlet is in communication with the internal volume. The flow of fuel through the nozzle draws fuel from the fuel source through the second fuel inlet and that fuel is combined with the flow of fuel from the nozzle and discharged into the reservoir.

Fuel pump assembly with electric motor fuel pump and fluid driven fuel pump

In at least some implementations, an assembly includes a float having a void with an inlet leading into the void in a first direction, and at least one retention surface that is not parallel to the first direction and a hinge received at least partially within the void. The hinge has at least one retention feature that cooperates with the at least one retention feature of the float to inhibit removal of the hinge from the float in a second direction opposite to the first direction, and the hinge is formed from a polymeric material. In at least some implementations, the hinge has a melting point similar to or lower than the melting point of the material of the float, and the hinge is formed separately from and is pressed into the void in the float.

Float and hinge for a valve

In at least some implementations, an adapter, for a fuel pump having a casing, has a base having an axis and an opening through which fluid may flow, and multiple tabs connected to the base. The tabs are circumferentially spaced apart with a void between at least part of the tabs, and at least two tabs have a contact portion that extends radially inwardly to define a minimum diameter opening between the tabs. Each contact portion extends along a portion less than all of the surface areas of the radially inner surface of the tabs.

Fuel pump adapter

In at least some implementations, a fuel pump assembly includes a fuel pump having an inlet through which fuel enters the fuel pump and a first outlet from which pressurized fuel is discharged for delivery to an engine, and a second outlet through which some of the fuel discharged from the fuel pump is routed wherein that fuel is not delivered to the engine, wherein the second outlet has a flow area that permits a flow of fuel through the second outlet that is sufficient to reduce the maximum pressure of fuel downstream of the first outlet for delivery to an engine to between 1/10th and 1/25th of the output pressure of the fuel pump without flow through the second outlet.

Fuel pump assembly with diverted flow

In at least some implementations, a fuel supply module includes a reservoir and a fuel pump carried by the reservoir. The reservoir may include a body and a lid that define an internal volume to contain a supply of fuel, and the reservoir may include an inlet through which fuel enters the internal volume and an outlet from which fuel is discharged from the fuel supply module. The fuel pump is carried by the reservoir and has a first inlet communicating with the internal volume to take fuel into the fuel pump from the internal volume and a second inlet spaced above the first inlet relative to the direction of the force of gravity to take fluid or vapors into the fuel pump from the internal volume. The fuel pump includes an outlet from which fluid is discharged for delivery to an engine through the reservoir outlet.

Fuel supply module and control system

A fuel pump for a fuel system includes a nozzle, a venturi, a pump inlet and a flow controller. The nozzle has an orifice through which fuel is ejected and the venturi is downstream of the nozzle and has an inlet through which fuel discharged from the orifice flows, a passage downstream of the venturi inlet through which fuel flows to create a drop in pressure in the area of the venturi, and an outlet through which fuel is discharged from the venturi. Fuel is drawn through the pump inlet by the drop in the pressure created in the area of the venturi and the flow controller is downstream of the outlet and has a chamber in which fuel from the venturi outlet is received. The flow controller causes fuel to fill the venturi to ensure performance of the fuel pump.

Venturi fluid pump with outlet flow controller

In at least some implementations, a liquid and vapor separator includes a body and a cover, a fuel inlet, a fuel outlet and a vent passage. A fuel pump has an inlet in communication with the interior volume and an outlet in communication with the fuel outlet. A fuel pressure regulator has an inlet in communication with the fuel pump outlet, an outlet in communication with the interior volume and a valve between the fuel pressure regulator inlet and the fuel pressure regulator outlet. The fuel pressure regulator is carried by the cover and the cover defines at least part of a fuel passage between the fuel pump outlet and the fuel outlet. An inlet valve is received within the interior volume and associated with the fuel inlet. A wall at least partially separates the area of the fuel pump from the area of the inlet valve.

Growing community of inventors

Caro, MI, United States of America

Elton J Fisch