A fuel module for pumping and filtration of a fuel in a fuel system includes a flow housing, and each of an electrically powered pump, a first cartridge filter, and a second cartridge filter in sealed, direct engagement with the flow housing. The fuel module is applied in a low pressure fuel circuit feeding fuel to a high pressure fuel circuit for pressurization to an injection pressure. Electronic closed loop control techniques for the pump are also disclosed.

A fuel pump is connected to a suction filter which is provided with a filter connecting portion having a cylindrical hole and a projecting portion protruding radially inward from an inner peripheral wall of the cylindrical hole. The fuel pump suctions the fuel filtered by the suction filter. The fuel pump is provided with a suction port having multiple suction openings at a side of the suction filter so as to suction the fuel therethrough, and a pump connecting portion provided at outer side of the multiple suction openings and connected with the filter connecting portion. The pump connecting portion has an outer peripheral wall of which outer shape corresponds with a shape of the inner peripheral wall, and a dent portion denting inward from the outer peripheral wall, which the projecting portion is engaged with.

A fuel pump is connected to a suction filter which is provided with a filter connecting portion having a cylindrical hole and a projecting portion protruding radially inward from an inner peripheral wall of the cylindrical hole. The fuel pump suctions the fuel filtered by the suction filter. The fuel pump is provided with a suction port having multiple suction openings at a side of the suction filter so as to suction the fuel therethrough, and a pump connecting portion provided at outer side of the multiple suction openings and connected with the filter connecting portion. The pump connecting portion has an outer peripheral wall of which outer shape corresponds with a shape of the inner peripheral wall, and a dent portion denting inward from the outer peripheral wall, which the projecting portion is engaged with.

An integrated fuel filter device for a vehicle includes a fuel filter disposed at a fuel feed line between a bombe and an engine, a pump for delivering fuel inside the bombe to the engine via the fuel feed line, a first fuel filling line connected to an inlet of the fuel filter and configured to guide fuel refueled from an outside of the vehicle to the inlet of the fuel filter, a second fuel filling line connected between an outlet of the fuel filter and the bombe and configured to guide the fuel passing through the fuel filter to the bombe, and a variable shut-off valve for controlling a flow of the fuel delivered from the pump to the inlet of the fuel filter and a flow of the fuel delivered from the outlet of the fuel filter to the bombe.

An integrated fuel filter device for a vehicle includes a fuel filter disposed at a fuel feed line between a bombe and an engine, a pump for delivering fuel inside the bombe to the engine via the fuel feed line, a first fuel filling line connected to an inlet of the fuel filter and configured to guide fuel refueled from an outside of the vehicle to the inlet of the fuel filter, a second fuel filling line connected between an outlet of the fuel filter and the bombe and configured to guide the fuel passing through the fuel filter to the bombe, and a variable shut-off valve for controlling a flow of the fuel delivered from the pump to the inlet of the fuel filter and a flow of the fuel delivered from the outlet of the fuel filter to the bombe.

A fuel filter for cleaning fuel for an internal combustion engine may include a main filter and a prefilter arranged upstream of the main filter, through which a fuel is successively flowable. The prefilter may include a water separator configured to separate water present in the fuel. The water separator may include a water collection chamber structured and arranged to collect the separated water. The prefilter fluidically connected to the main filter via a conveying device structured and arranged to convey the fuel from the prefilter into the main filter. The conveying device may be configured to provide an excess pressure build up. The fuel filter may also include a suction jet pump fluidically connected to the water collection chamber via which at least one of the fuel and the water is dischargeable from the water collection chamber.

A fuel filter for cleaning fuel for an internal combustion engine may include a main filter and a prefilter arranged upstream of the main filter, through which a fuel is successively flowable. The prefilter may include a water separator configured to separate water present in the fuel. The water separator may include a water collection chamber structured and arranged to collect the separated water. The prefilter fluidically connected to the main filter via a conveying device structured and arranged to convey the fuel from the prefilter into the main filter. The conveying device may be configured to provide an excess pressure build up. The fuel filter may also include a suction jet pump fluidically connected to the water collection chamber via which at least one of the fuel and the water is dischargeable from the water collection chamber.

A fuel supply device includes a filter device, a pump, a suction pipe, and a babble removing device. The filter device includes a first filter that filters a fuel, a filter chamber surrounded by the first filter, and a filter opening that is in fluid communication with the filter chamber. The pump has a pump suction port for drawing the fuel from the filter chamber. The suction pipe fluidly connects the filter opening to the pump suction port. The babble removing device is disposed in at least one of the filter device and the suction pipe. The bubble removing device includes a valve device that is configured to discharge a bubble contained in the fuel to the internal space of the fuel tank, and a foreign matter regulator that is disposed between the valve device and the internal space and that regulates or prevents a foreign matter contained in the fuel from flowing into the fuel supply device.

A fuel supply device includes a filter device, a pump, a suction pipe, and a babble removing device. The filter device includes a first filter that filters a fuel, a filter chamber surrounded by the first filter, and a filter opening that is in fluid communication with the filter chamber. The pump has a pump suction port for drawing the fuel from the filter chamber. The suction pipe fluidly connects the filter opening to the pump suction port. The babble removing device is disposed in at least one of the filter device and the suction pipe. The bubble removing device includes a valve device that is configured to discharge a bubble contained in the fuel to the internal space of the fuel tank, and a foreign matter regulator that is disposed between the valve device and the internal space and that regulates or prevents a foreign matter contained in the fuel from flowing into the fuel supply device.

An integrated fuel filter device for a vehicle includes a fuel filter disposed at a fuel feed line between a bombe and an engine, a pump for delivering fuel inside the bombe to the engine via the fuel feed line, a first fuel filling line connected to an inlet of the fuel filter and configured to guide fuel refueled from an outside of the vehicle to the inlet of the fuel filter, a second fuel filling line connected between an outlet of the fuel filter and the bombe and configured to guide the fuel passing through the fuel filter to the bombe, and a variable shut-off valve for controlling a flow of the fuel delivered from the pump to the inlet of the fuel filter and a flow of the fuel delivered from the outlet of the fuel filter to the bombe.