A fuel evaporative emission processing system suitable for a hybrid vehicle includes a fuel vapor passage, a shut-off valve, a purge passage, a first purge control valve, and a second purge control valve. The shut-off valve selectively opens and closes the fuel vapor passage communicating between a fuel tank and a canister. The first purge control valve opens and closes the purge passage communicating between the canister and an intake air passage of an internal combustion engine. The second purge control valve selectively opens or closes the tank opening passage communicating between the purge passage on an upstream side of the first purge control valve and the fuel tank. When purging the canister, by opening the second purge control valve, the evaporative fuel inside the fuel tank is directly processed by the internal combustion engine, so that increase in the amount of adsorption in the canister can be suppressed.

A fuel evaporative emission processing system suitable for a hybrid vehicle includes a shut-off valve, a first purge control valve and a second purge control valve. The shut-off valve is selectively opens and closes a fuel vapor passage between a fuel tank and a canister. The first purge control valve selectively opens and closes a purge passage between the canister and the intake passage of an internal combustion engine. The second purge control valve selectively opens and closes a tank opening passage between the canister and the fuel tank. When releasing a pressure for refueling, the second purge control valve with a small diameter opens prior to opening of the shut-off valve so that blow-by of gas associated with opening of the shutoff valve is prevented.

A pressure relief assembly includes a plurality of valve components and a cap configured to house the valve components. The cap includes a ring having a retaining portion. The pressure relief assembly includes a sensor apparatus coupled to the cap via the ring. The sensor apparatus is configured to sense whether a predetermined pressure threshold is reached. The valve components operate to relieve pressure when the predetermined pressure threshold is reached. The sensor apparatus includes a retaining portion engaging the retaining portion of the ring. A valve assembly includes a first valve apparatus and the pressure relief assembly configured to bypass the first valve apparatus. The valve assembly includes a main housing that surrounds the first valve apparatus and the pressure relief assembly. The main housing defines an aperture in which the cap of the pressure relief assembly is at least partially disposed in the aperture.

A fuel tank vent valve includes a venting apparatus for regulating discharge of fuel vapor from a fuel tank and admission of outside air into a fuel tank. The vent valve is used to regulate pressure in a fuel tank.

A relief valve can include a valve body, a valve member, a valve stem, and a magnetic member. The valve body can define a flow path that extends between a first port and a second port. The valve body can include a valve seat disposed between the first port and the second port. The valve member can be disposed between the valve seat and the second port of the valve body. The valve member can move along an actuation axis. The valve stem can be coupled to the valve member. The valve stem can extend from the valve member towards the first port. The magnetic member can be coupled to the valve member and can generate a magnetic force that urges the valve member to seal with the valve seat of the valve body.

A gaseous fuel storage arrangement for a combustion engine or fuel cell of a vehicle having an exhaust gas system, the gaseous fuel storage arrangement comprising: a storage housing and a gaseous fuel tank; an exhaust gas transportation line extending from the exhaust gas system to the storage housing; a controllable valve configurable in an open position for enabling supply of exhaust gas to the storage housing via the exhaust gas transportation line; and a control unit configured to determine an exhaust gas temperature in the exhaust gas system, and to determine a storage gas temperature in the storage housing, and in response to the determined storage gas temperature being below a first predefined temperature threshold and below the determined exhaust gas temperature, control the controllable valve in the open position.

A valve assembly includes a housing having an inner chamber, a float assembly provided within the inner chamber, and an elongated membrane. The inner chamber is provided with a vent orifice in fluid communication with a vent outlet. The float assembly is movable along a longitudinal axis of the housing, and includes an angled platform disposed on an upper surface of the float assembly. The membrane includes a first end secured to a first attachment of the float assembly, a second end provided opposite the first end and secured to a second attachment of the float assembly, and a slack portion associated with the second end.

An in-tank fuel pump assembly and mounting system is disclosed which may be configured for mounting inside a fuel tank. The assembly includes a pump housing, pump mounted to the housing, and pressure relief valve. The housing may comprise upper and lower pump housing units coupled together. The upper housing unit is configured for mounting to a tank opening, which in one implementation may be the fuel fill opening. The lower housing unit extends into the tank to approximately the bottom of the tank. A fuel fill fluid pathway is created through the housing for adding fuel to the tank while the pump assembly remains in situ. The upper housing unit may include a removable fuel cap. The pump housing may include an integral vapor trap.

A fuel tank assembly having a fuel tank and a first valve assembly in fluid communication with the fuel tank configured to selectively allow air to pass through an outlet vent when the vehicle is in an operational orientation, and to restrict fuel flow from out of the gas tank if the vehicle is not in an operational orientation. The fuel tank assembly also has a second valve assembly in fluid communication with the first valve assembly configured to regulate pressure within the fuel tank by permitting air to enter the fuel tank when internal pressure of the fuel tank falls below a first threshold, and permitting air to exit the fuel tank when internal pressure exceeds a second threshold. The valve assemblies are connected in-line such that air entering or exiting the fuel tank via the outlet vent passes through both the first and second valve assemblies.

A valve assembly may include a Fill Limit Vent Valve (FLVV) for preventing overfilling of the fuel tank during a refueling event, the FLVV comprising a first vapor path and a first float for selectively opening and closing the first vapor path based on fuel level in the fuel tank. The valve assembly may include a Grade Vent Valve (GVV) for releasing pressure in the fuel tank, wherein the GVV has a housing with an interface end connected to the FLVV and a ventilation end that comprises a ball-type valve for opening and closing a second vapor path of the GVV. The valve assembly may include a canister enveloping at least the ventilation end of the housing of the GVV, wherein the ventilation end of the housing of the GVV comprises (a) an orifice coupled to the first vapor path of the FLVV, and (b) a head cage for confining movements of a ball of the ball-type valve. The head cage is defined by at least a plurality of walls comprising: a first curved wall with a first end terminating at the orifice for the first vapor path of the FLVV and a second end terminating at a first terminating location proximate to a side boundary of the ventilation end of the housing; and a second curved wall with a third end terminating at the orifice for the first vapor path of the FLVV and a fourth end terminating at a second terminating location proximate to the side boundary of the ventilation end of the housing.