A priming pump may include a housing; an inlet passageway inside of the housing; an outlet passageway inside of the housing; a divider, inside of the housing, separating the inlet passageway and the outlet passageway; a connecting passageway through the divider in fluid communication with the inlet passageway and the outlet passageway; a valve, disposed in the connecting passageway, configured for one-way fluid flow from the inlet passageway to the outlet passageway; a rotary pump, inside of the housing, having an inlet in fluid communication with the inlet passageway and an outlet in fluid communication with the outlet passageway; and a shaft connected to the rotary pump and extending through the housing, the shaft configured for rotation by an external driving mechanism.

A fuel pump module includes a fuel pump, a housing, a filter, a bracket, a lid, a fuel passage, and a pressure regulating valve. The fuel pump supplies a fuel in a fuel tank that defines an opening to an outside of the fuel tank. The housing has a cylindrical shape and supports the fuel pump. The bracket connects the filter to the housing. The lid covers the opening and defines a discharge port through which the fuel is supplied to the outside. The fuel passage connects the fuel pump to the discharge port. The pressure regulating valve has a gravity center inside a space defined by a first virtual cylindrical surface including the housing. A minimum circumscribed circle of both the housing and the filter is smaller than the opening.

A system of fuel delivery assemblies is provided. In one example, the system includes two separate fuel pump assemblies each having a reservoir with an interior to receive fuel. Each reservoir has at least one dimension that is different than the other reservoir. A housing is adapted to be separately coupled to each of the reservoirs so that a cartridge may be separately used with both fuel pump assemblies. The cartridge orients at least one fuel system component relative to the reservoir to which the reservoir is connected.

A system of fuel delivery assemblies is provided. In one example, the system includes two separate fuel pump assemblies each having a reservoir with an interior to receive fuel. Each reservoir has at least one dimension that is different than the other reservoir. A housing is adapted to be separately coupled to each of the reservoirs so that a cartridge may be separately used with both fuel pump assemblies. The cartridge orients at least one fuel system component relative to the reservoir to which the reservoir is connected.

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 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 fluid filtering device may have a body that include a fluid collection portion, a filtering chamber, and a passthrough bore. The fluid collection portion may be configured to collect fluid supplied to the fluid filtering device. The filtering chamber may be in fluid communication with the fluid collection portion. The filtering chamber may have an entrance portion, an exit portion, and a fluid filter. The filtering chamber may be configured to filter the fluid supplied to the fluid filtering device. The passthrough bore may be in fluid communication with the filtering chamber and may be separate from the fluid collection portion such that fluid flowing from the fluid collection portion flows into the filtering chamber, and the fluid flowing from the filtering chamber flows into the passthrough bore.

A fluid filtering device may have a body that include a fluid collection portion, a filtering chamber, and a passthrough bore. The fluid collection portion may be configured to collect fluid supplied to the fluid filtering device. The filtering chamber may be in fluid communication with the fluid collection portion. The filtering chamber may have an entrance portion, an exit portion, and a fluid filter. The filtering chamber may be configured to filter the fluid supplied to the fluid filtering device. The passthrough bore may be in fluid communication with the filtering chamber and may be separate from the fluid collection portion such that fluid flowing from the fluid collection portion flows into the filtering chamber, and the fluid flowing from the filtering chamber flows into the passthrough bore.

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.

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.