Abstract: A liquid fuel catcher has a case which defines a plurality of chambers formed as depressions in a passage so that a liquid fuel is accumulated. The case has a communicating portion which communicates the chambers in series at upper portions thereof. The case has openings at each bottom portions of the chambers. The case has a return passage which returns the liquid fuel accumulated in the chambers to a fuel tank. The liquid fuel catcher has a return valve. The return valve closes the return passage, when the liquid fuel level in the fuel tank exceeds a predetermined level. The return valve opens the return passage, when the liquid fuel level in the fuel tank is less than a predetermined level. The fuel returns to the fuel tank from the chambers through the return valve.

Abstract: A fuel supply device includes a fuel pump and a filter case that houses a fuel filter, a fuel pumped by the fuel pump from inside a fuel tank is filtered by the fuel filter and supplied from inside the filter case toward an internal combustion engine, and the filter case includes a case body having a closed bottom shape that forms a housing chamber of the fuel filter, a case cap that covers an aperture of the case body by being joined to the case body, and a residual pressure retention valve that, when the fuel pump is stopped, retains a pressure of the fuel supplied from inside the filter case toward the internal combustion engine, the residual pressure retention valve being disposed at a joint boundary of the case body and the case cap.

Abstract: A suction filter includes: a casing having an intake port through which fuel is drawn; a filtration member to filter the fuel to be drawn into the intake port; and a wall component which defines a fuel passage for fuel which passes the filtration member toward the intake port. At least a part of the filtration member is located higher than the intake port. The wall component has an upper end positioned higher than the intake port, and the fuel passage is defined so that the fuel flowing through the fuel passage flows over the upper end.

Abstract: A casing includes a container in which a float valve is disposed. When the float valve is closed, the casing keeps the float valve in a closed state for a relatively long period of time. A sub-float valve is provided below the container in the casing, and is closed by floating on fuel at the time of a turn of a vehicle or an automatic stop of first refueling. When the first refueling is completed, air in the sub-float valve is discharged, and the sub-float valve loses its floating function.

Abstract: A fuel-filter abnormality detection device is used for a subject filter provided in a fuel supply device of an engine to filtrate a fuel. The fuel-filter abnormality detection device includes a first filter attachable downstream of the subject filter in fuel flow. A filtration capacity of the first filter is smaller than a filtration capacity of the subject filter, and the first filter traps a foreign matter on a downstream side of the subject filter to cause a change in fuel pressure indicating an abnormality of the subject filter. The fuel-filter abnormality detection device may include a bypass passage through which the fuel bypasses the first filter, a bypass control valve configured to allow the fuel to flow through the bypass passage when the abnormality of the subject filter is detected, and a second filter filtrating the fuel flowing through the bypass passage.

Abstract: A valve structure includes a retention element, a first valve body, and a second valve body. The retention element is mounted to and is retained in a lower portion of a stored object. The stored object includes a pump device that pumps fuel from the fuel tank into the sub tank through a pumping passage that communicates an inside of the sub tank with an outside of the sub tank. The stored object is inserted from an upper portion of the sub tank and housed inside the sub tank. The first valve body is integrally formed with the retention element and extends from the retention element. The first valve body is located at a natural inlet open on the bottom portion of the sub tank. The second valve body is integrally formed with the retention element and extends from the retention element. The second valve body is located on the pumping passage.

Abstract: A control valve is disposed on a vapor control system which controls vapor. A case and caps hold a diaphragm. The case and the diaphragm define a primary chamber. The caps and the diaphragm define a secondary chamber. The secondary chamber communicates to an inlet passage via a through hole formed as an orifice. An inlet pipe is arranged so that the inlet passage and the secondary chamber are adjacent each other by being separated by an outer wall. By employing this arrangement, the through hole can be formed without increasing a vapor permeable surface area. Since the through hole is not formed on the diaphragm, a stable open-and-close characteristic can be provided. The through hole may be formed by using a molding die for forming the inlet passage. Thereby, it is possible to improve productivity.

Abstract: The fuel supply device has a module installed in a fuel tank. The module has a cap and a support pillar arranged between the cap and a bottom of the fuel tank. The cap is supporting a valve relevant to ventilation of the fuel tank. The valve is supported by a base portion. The base portion and a large diameter part are connected by snap-fit mechanisms. The valve and the base portion are connected by snap-fit mechanisms. A hook part is arranged in an engaging window. It is possible to inspect the valve through the engaging window.

Abstract: A fuel tank structure comprising a fuel tank; a canister that adsorbs evaporated fuel within the fuel tank, and that releases vapor after adsorption of evaporated fuel; a full tank regulating valve within the fuel tank that becomes a closed state due to a float floating in fuel when a fuel liquid surface reaches a full tank liquid level that is set in advance; a communication pipe that communicates the fuel tank and the canister via the full tank regulating valve, a cross-sectional area varying valve that, when tank internal pressure that is applied from inside of the fuel tank increases, reduces a cross-sectional area of a flow path of vapor that flows toward the float; and a suppressing member that is positioned between the cross-sectional area varying valve and the float, and that suppresses airflow from the cross-sectional area varying valve from directly abutting the float.

Abstract: A fuel vapor control device has a flow control valve which regulates a flow amount of fuel vapor from a fuel tank to a canister. The flow control valve has a movable element accommodated in a case. The movable valve element has a central cylindrical part, an outer cylindrical part, and a disc part which connects the central cylindrical part and the outer cylindrical part. The central cylindrical part provides a central channel. The central channel provides a main channel which communicates an inlet and an outlet. A sub channel defined and formed between the movable element and the case is opened and closed by a valve formed by the case and the outer cylindrical part. The central channel makes easy setting of flow amount in regulated condition. Since turbulence is reduced, it is possible to perform stable regulation.

Abstract: A valve device for a fuel vapor system includes: a case having a valve seat; and an umbrella valve having a valve portion that provides a valve closed state by contacting the valve seat and provides a valve open state by separating from the valve seat, and an outer edge portion that is formed on a radially outer side of the valve portion and restrained by the case. The valve portion is elastically deformed so as to be convex by a predetermined amount in one direction in an axial direction in the valve closed state; and the valve portion is elastically deformed so as to be convex by greater than the predetermined amount in the one direction in the valve open state.

Abstract: A support shaft connects between a flange and a pump unit. An intermediate member, which connects between the support shaft and pump unit, enables a relative positional change between the support shaft and the pump unit in an axial direction of the support shaft. The intermediate member limits a relative positional change between the support shaft and the pump unit in a circumferential direction of the support shaft. A resilient member is received in the support shaft and exerts a restoring force in an axial direction of the support shaft to urge the pump unit, which is movable relative to the support shaft in the axial direction, toward a bottom portion of the fuel tank.

Abstract: A casing includes a container in which a float valve is disposed. When the float valve is closed, the casing keeps the float valve in a closed state for a relatively long period of time. A sub-float valve is provided below the container in the casing, and is closed by floating on fuel at the time of a turn of a vehicle or an automatic stop of first refueling. When the first refueling is completed, air in the sub-float valve is discharged, and the sub-float valve loses its floating function.

Abstract: A casing includes a container in which a float valve is disposed. When the float valve is closed, the casing keeps the float valve in a closed state for a relatively long period of time. A sub-float valve is provided below the container in the casing, and is closed by floating on fuel at the time of a turn of a vehicle or an automatic stop of first refueling. When the first refueling is completed, air in the sub-float valve is discharged, and the sub-float valve loses its floating function.

Abstract: A reservoir is in a bottomed tubular shape and located in a fuel tank. A lid member closes an opening of the reservoir. A pump unit discharges fuel stored in the reservoir to an exterior of the fuel tank. The pump unit is supported by a holding portion of the lid member.

Abstract: A pump unit having a fuel pump and a suction filter is provided in a sub tank of a fuel tank. A filter element sheet for the suction filter is formed in a cup shape, a bottom wall portion of which faces to an inner bottom surface of the sub tank. A suction port of the fuel pump is opened to a fuel passage formed in the inside of the suction filter, so that filtered fuel is sucked into the fuel pump. Multiple mountain fold portions and multiple valley fold portions are formed on a side wall of the cup-shaped filter element sheet, to thereby increase surface area for filtering the fuel.

Abstract: A reservoir is located in a fuel tank. The reservoir is in a bottomed tubular shape having a periphery defining an opening. A lid member is located in the fuel tank and mounted to the periphery of the reservoir to close the opening. A pump unit is partially accommodated in the reservoir to discharge fuel stored in the reservoir to an exterior of the fuel tank. The pump unit is located at a position offset from a center axis of the lid member. The pump unit has a projection projected from the lid member to an exterior of the reservoir. A remaining quantity detector is configured to detect a quantity of fuel in the fuel tank. The remaining quantity detector is located at a remaining space remaining in the fuel tank. The remaining space is located on the lid member and located around the projection.

Abstract: A fuel tank structure comprising a fuel tank; a canister that adsorbs evaporated fuel within the fuel tank, and that releases vapor after adsorption of evaporated fuel; a full tank regulating valve within the fuel tank that becomes a closed state due to a float floating in fuel when a fuel liquid surface reaches a full tank liquid level that is set in advance; a communication pipe that communicates the fuel tank and the canister via the full tank regulating valve, a cross-sectional area varying valve that, when tank internal pressure that is applied from inside of the fuel tank increases, reduces a cross-sectional area of a flow path of vapor that flows toward the float; and a suppressing member that is positioned between the cross-sectional area varying valve and the float, and that suppresses airflow from the cross-sectional area varying valve from directly abutting the float.

Abstract: A forming method using a pressing and injection-molding multifunction die for forming a metal-resin molded product by integrating metal with resin, includes: forming a resin-molded portion on the metal; and performing, after the resin-molded portion is formed on the metal, at least one of a pressing process and an injection-molding process on the metal in the state in which the metal-resin molded product is supported by only the resin.

Abstract: A casing has a vessel portion, in which a float valve unit is arranged. A fuel drain through-hole having a small diameter is formed at a closed end bottom of the vessel portion. A cross sectional area of the fuel drain through-hole is extremely smaller than an opening area of an inlet port, so that fuel discharging speed of the liquid fuel from the vessel portion through the fuel drain through-hole is suppressed to a small value. As a result, a fuel holding time of the liquid fuel in the vessel portion, which has entered into the vessel portion from the inlet port, is made longer.