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 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 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 high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.

A high-pressure pump has a metering valve and a valve stopper. The stopper has a regulation portion which an end surface of the valve is brought into contact with. An outer diameter of the regulation portion is equal to an outer diameter of the outer peripheral surface of the valve. A cylindrical sleeve is disposed around the regulation portion. When the end surface of the valve is in contact with the regulation portion, the sleeve covers a tapered surface of the valve.

Systems and methods for priming a fuel filtration housing are provided. In some embodiments, a system for filling a fuel filtration housing may include a cover sized and shaped to releasably engage an opening to a first chamber of a first fuel filtration housing, a first seal coupled to the cover, and a pump. In some embodiments, the cover, the first seal, and the pump may be arranged such that when the cover is pressed against the opening of the first fuel filtration housing and the pump is operated, the first seal engages one or more surfaces of the first fuel filtration housing and a first low pressure zone is formed within the chamber of the first filtration housing. The first low pressure zone may have a pressure that is lower than a pressure within a first fuel supply tank coupled to the first chamber such that a first liquid within the first supply tank flows into the first chamber.

Systems and methods for priming a fuel filtration housing are provided. In some embodiments, a system for filling a fuel filtration housing may include a cover sized and shaped to releasably engage an opening to a first chamber of a first fuel filtration housing, a first seal coupled to the cover, and a pump. In some embodiments, the cover, the first seal, and the pump may be arranged such that when the cover is pressed against the opening of the first fuel filtration housing and the pump is operated, the first seal engages one or more surfaces of the first fuel filtration housing and a first low pressure zone is formed within the chamber of the first filtration housing. The first low pressure zone may have a pressure that is lower than a pressure within a first fuel supply tank coupled to the first chamber such that a first liquid within the first supply tank flows into the first chamber.

A valve device for a fuel filter module has a first fluid channel through which fuel flows only in recirculation mode of the fuel filter module and a second fluid channel through which fuel flows only outside of the recirculation mode. The first fluid channel extends inside the second fluid channel. The first and second fluid channels are coaxial to each other. A fuel filter module switchable into recirculation mode and out of recirculation mode is provided with a control valve that has a valve bore and a valve device arranged in the valve bore, wherein the valve device has a first fluid channel through which fuel flows only in recirculation mode and a second fluid channel through which fuel flows only outside of the recirculation mode. The first fluid channel extends inside the second fluid channel, and the first and second fluid channels are coaxial to each other.

A vehicle fueling control system according to an exemplary aspect of the present disclosure includes, among other things, a fuel inlet conduit configured to receive a fuel dispensing nozzle, and a blocking assembly. The blocking assembly is configured to move back and forth between a fill blocking position that blocks airflow through a port of the fuel dispensing nozzle and a fill permitting position that permits airflow through the port of the fuel dispensing nozzle.

A vehicle fueling control system according to an exemplary aspect of the present disclosure includes, among other things, a fuel inlet conduit configured to receive a fuel dispensing nozzle, and a blocking assembly. The blocking assembly is configured to move back and forth between a fill blocking position that blocks airflow through a port of the fuel dispensing nozzle and a fill permitting position that permits airflow through the port of the fuel dispensing nozzle.