A filling device includes a filling pipe to extend into a liquid container for fluidic connection to the liquid container, a filling head operatively connected to the filling pipe, a venting pipe to vent the liquid container, the venting pipe having an open venting pipe section at an end thereof, and an indicator member configured to visually indicate a filling condition of the liquid container. During a filling sequence of the liquid container in a condition in which the liquid container is not full of liquid, the indicator member is to be impinged upon by outflowing air in the venting pipe at a force such that the indicator member assumes a first recognizable condition. During a filling sequence of the liquid container in a condition in which the liquid container is full of liquid, the indicator member is not impinged on by outflowing air in the venting pipe at a force such that the indicator member assumes a second recognizable condition.

A filling device includes a filling pipe to extend into a liquid container for fluidic connection to the liquid container, a filling head operatively connected to the filling pipe, a venting pipe to vent the liquid container, the venting pipe having an open venting pipe section at an end thereof, and an indicator member configured to visually indicate a filling condition of the liquid container. During a filling sequence of the liquid container in a condition in which the liquid container is not full of liquid, the indicator member is to be impinged upon by outflowing air in the venting pipe at a force such that the indicator member assumes a first recognizable condition. During a filling sequence of the liquid container in a condition in which the liquid container is full of liquid, the indicator member is not impinged on by outflowing air in the venting pipe at a force such that the indicator member assumes a second recognizable condition.

According to a set of embodiments, the filtration system includes a housing with a fuel inlet and a fuel outlet. A pump is in fluid communication with the fuel outlet. A fuel tank is in fluid communication with the fuel inlet. A thermal recirculation valve includes a thermal recirculation valve inlet and a thermal recirculation valve outlet. The thermal recirculation valve inlet receives heated fuel and the thermal recirculation valve outlet is in fluid communication with the fuel tank. A fluid passage is between the thermal recirculation valve inlet and the thermal recirculation valve outlet. A passage blocking mechanism having a first position and a second position. The passage blocking mechanism is structured to prevent fluid flow through the fluid passage when in the first position. The passage blocking mechanism is structured to allow fluid flow through the fluid passage when in the second position.

A fuel supply device of an engine includes: a fuel tank; a fuel filter which is disposed in front of the fuel tank in a front-rear direction of a vehicle; a fuel pump which is disposed in front of the fuel filter in the front-rear direction of the vehicle; a first fuel supply pipe which connects the fuel tank and the fuel filter to each other; and a second fuel supply pipe which connects the fuel filter and the fuel pump to each other. A first connecting portion to which the first fuel supply pipe is connected is formed on a front portion of the fuel filter, and a second connecting portion to which the second fuel supply pipe is connected is formed on a rear portion of the fuel filter.

A fuel pump includes a housing which is tubular; an inlet plate closes one end of the housing and an end cap closes the other end of the housing. The end cap includes an outlet passage and a vapor purge passage. An electric motor within the housing rotates a pumping element to pump fuel through the fuel pump. A valve assembly of the fuel pump includes a valve member located within the purge passage, the valve member being moveable between a first position which blocks fluid communication therethrough and a second position which provides fluid communication therethrough. A valve retainer fixed to the end cap includes a first leg, a second leg which is opposed to the first leg, and a cross-beam which joins the first leg and the second leg. The valve member is stopped by the cross-beam at the second position.

A fuel pump includes a housing which is tubular; an inlet plate closes one end of the housing and an end cap closes the other end of the housing. The end cap includes an outlet passage and a vapor purge passage. An electric motor within the housing rotates a pumping element to pump fuel through the fuel pump. A valve assembly of the fuel pump includes a valve member located within the purge passage, the valve member being moveable between a first position which blocks fluid communication therethrough and a second position which provides fluid communication therethrough. A valve retainer fixed to the end cap includes a first leg, a second leg which is opposed to the first leg, and a cross-beam which joins the first leg and the second leg. The valve member is stopped by the cross-beam at the second position.

An air separator, fuel delivery system and installation set are provided. The air separator includes a vessel defining a hollow interior chamber having an inlet for receiving fuel from a fuel source and an outlet for fluidic communication with an engine. An air-bleed receives and removes a quantity of undesired gas, which is in fluidic communication with a discharge port. Further, a filter media for contact with fuel received and a conduit for delivering fuel passing through the filter media to the outlet. The air separator removes gas from the fuel prior to passage through the outlet to the engine, with the gas passing through the air-bleed. The air bleed includes a fluidic mixing alcove for passage of the gas through the discharge port. The air separator is between the transfer pump and the engine. Finally, installation sets for mounting the air separator to the fuel delivery system.

An air separator, fuel delivery system and installation set are provided. The air separator includes a vessel defining a hollow interior chamber having an inlet for receiving fuel from a fuel source and an outlet for fluidic communication with an engine. An air-bleed receives and removes a quantity of undesired gas, which is in fluidic communication with a discharge port. Further, a filter media for contact with fuel received and a conduit for delivering fuel passing through the filter media to the outlet. The air separator removes gas from the fuel prior to passage through the outlet to the engine, with the gas passing through the air-bleed. The air bleed includes a fluidic mixing alcove for passage of the gas through the discharge port. The air separator is between the transfer pump and the engine. Finally, installation sets for mounting the air separator to the fuel delivery system.

In a fuel tank, a pressure regulator is placed at an outside of a sub-tank and regulates a pressure of fuel of a pressure-regulation path, which is discharged from a fuel pump and is fed toward an outside of the fuel tank. A fuel recovery passage portion recovers excess fuel, which becomes excess at the pressure-regulation path, to the sub-tank. The sub-tank has an opening at a location that is higher than the suction filter. The fuel recovery passage portion is inserted from the outside of the sub-tank into the inside of the sub-tank through the opening while a gap is formed between the fuel recovery passage portion and the opening, so that the fuel recovery passage portion has an excess fuel outlet that discharges the excess fuel at a location that is on an inner side of the opening where an inside of the sub-tank is placed.

In a fuel tank, a pressure regulator is placed at an outside of a sub-tank and regulates a pressure of fuel of a pressure-regulation path, which is discharged from a fuel pump and is fed toward an outside of the fuel tank. A fuel recovery passage portion recovers excess fuel, which becomes excess at the pressure-regulation path, to the sub-tank. The sub-tank has an opening at a location that is higher than the suction filter. The fuel recovery passage portion is inserted from the outside of the sub-tank into the inside of the sub-tank through the opening while a gap is formed between the fuel recovery passage portion and the opening, so that the fuel recovery passage portion has an excess fuel outlet that discharges the excess fuel at a location that is on an inner side of the opening where an inside of the sub-tank is placed.