Abstract: A fuel supply system with an accumulator that allows for the accumulation of fuel at a pressure greater than the nominal operating pressure of the fuel supply system. The accumulation of fuel allows for less frequent fuel pump operation and therefore a reduction in overall fuel consumption of an engine.

Abstract: A fuel supply system with an accumulator that allows for the accumulation of fuel at a pressure greater than the nominal operating pressure of the fuel supply system. The accumulation of fuel allows for less frequent fuel pump operation and therefore a reduction in overall fuel consumption of an engine.

Abstract: In accordance with an aspect of the present disclosure, an integrated PWM fuel pump driver module includes a circuit board on which at least one power semiconductor is disposed and a fuel tube downstream of a fuel pump controlled by the driver module. The fuel flowing through the fuel tube cools each power semiconductor as heat is transferred from each power semiconductor into the fuel.

Abstract: A fuel supply system with an accumulator that allows for the accumulation of fuel at a pressure greater than the nominal operating pressure of the fuel supply system. The accumulation of fuel allows for less frequent fuel pump operation and therefore a reduction in overall fuel consumption of an engine.

Abstract: A fuel tank assembly comprising a fuel tank having a plurality of walls spaced apart by a floor, a flange having a top portion and a bottom portion, and extending downward from one of the plurality of walls, is provided. The fuel tank assembly further includes a housing, a crimp ring and a lip, wherein the crimp ring is fitted over the lip for engaging the flange and the housing. A fuel pump is housed within the housing, wherein the housing is arranged to fixedly position at least one inlet connected to the fuel pump at or in close proximity to the floor of the fuel tank. A fuel reservoir extends away from the floor having at least one passage formed therein, the fuel reservoir being positioned within the fuel tank so as to create an accumulated area of the fuel tank surrounding the at least one inlet, wherein fuel enters the accumulated area through the at least one passage for receipt by the at least one inlet.

Abstract: A system for sensing a fuel level includes sensors that sense the fuel level and a voltage source that applies a constant voltage to the sensors for a predetermined time. The system includes a control module that measures outputs of the sensors at a beginning and at an end of the predetermined time. The control module determines a number of the sensors that are submersed in fuel or air based on the outputs and calculates the fuel level based on the number of the sensors that are submersed in fuel or air.

Abstract: A fuel tank assembly comprising a fuel tank having a plurality of walls spaced apart by a floor, a flange having a top portion and a bottom portion, and extending downward from one of the plurality of walls, is provided. The fuel tank assembly further includes a housing, a crimp ring and a lip, wherein the crimp ring is fitted over the lip for engaging the flange and the housing. A fuel pump is housed within the housing, wherein the housing is arranged to fixedly position at least one inlet connected to the fuel pump at or in close proximity to the floor of the fuel tank. A fuel reservoir extends away from the floor having at least one passage formed therein, the fuel reservoir being positioned within the fuel tank so as to create an accumulated area of the fuel tank surrounding the at least one inlet, wherein fuel enters the accumulated area through the at least one passage for receipt by the at least one inlet.

Abstract: A fuel pump controller includes a detecting device for detecting environmental vibrational energy and converting the environmental vibrational energy into an electrical signal. A motor controller is coupled to a fuel pump motor wherein the electrical signal is used by the controller to command the fuel pump motor to operate at one of a plurality of speeds wherein the commanded speed is at least in part a function of the environmental vibrational energy.

Abstract: A fuel tank assembly includes a fuel tank having a plurality of side walls spaced apart by a floor. A flange extends downward from one of the plurality of side walls at an angle toward the floor. A fuel pump extends from the flange; the fuel pump and flange are arranged to fixedly position at least one inlet connected to the fuel pump at or in close proximity to the floor of the fuel tank. A fuel dam extends away from the floor and has at least one passage formed therein. The fuel dam is positioned so as to create an accumulated area of the fuel tank surrounding the at least one inlet. Fuel enters the accumulated area through the at least one passage and is received by the at least one inlet.

Abstract: A fuel pump controller includes a detecting device for detecting environmental vibrational energy and converting the environmental vibrational energy into an electrical signal. A motor controller is coupled to a fuel pump motor wherein the electrical signal is used by the controller to command the fuel pump motor to operate at one of a plurality of speeds wherein the commanded speed is at least in part a function of the environmental vibrational energy.

Abstract: A method and system for determining the level of fuel contained in the tank of a motor vehicle includes a first resistive element disposed in the tank and having a first predetermined length. The first resistive element generates a variable resistance in response to electrical current and fuel passing therethrough. A second resistive element is also disposed in the tank and has a second predetermined length. The second resistive element generates a fixed resistance in response to the electrical current and fuel passing therethrough. A microprocessor coupled to the first and second resistive elements determines the level of fuel contained in the tank based on the variable resistance, the fixed resistance and the first and second predetermined lengths.

Abstract: A method and system for determining the level of fuel contained in the tank of a motor vehicle includes a fuel pump disposed in the tank for creating a flow of fuel in the tank. An elongated tube is placed vertically in the tank. The system also includes a venturi tube coupled between the fuel pump and the elongated tube for creating a vacuum as a result of a portion of the flow of fuel therethrough from the fuel pump thereby drawing fuel vapor from the elongated tube at a varying pressure, the pressure decreasing as the amount of fuel vapor in the tank increases. A controller is coupled to the elongated tube for determining the level of fuel in the tank based on the pressure.

Abstract: A valved unit to control introduction of liquid fuel and venting of vaporous fuel relative to a vehicle fuel tank which unit is mounted on to the tank wall to effectively seal and isolate the tank downstream from a filler tube and related fuel delivery hoses. Tank closure is normally maintained by a closure spring which is overcome by introduction of fuel into the tank which allows movement of the inlet closure valve from its seated closed position and simultaneously opens an associated vaporous fuel vent control valve. When introduction of fuel is terminated, a spring returns the two valve elements back to their closed and sealed positions.

Abstract: In association with a fuel tank of a vehicle with an inlet, an improved fuel filler assembly therein with first and second sealing means for isolating the interior of the fuel tank from the atmosphere and a vapor storage canister before a refill of the tank and subsequently from the atmosphere but not the storage canister during a refill operation while preventing passage of liquid to the storage canister.