Abstract: A tank venting system is configured to regulate air and fuel vapor flow between a fuel tank and a fuel vapor recovery canister. A roll-over valve is included in the tank venting system.

Abstract: A nozzle inhibitor is positioned in a filler neck closure assembly to prevent a user from pumping unleaded fuel into a diesel fuel tank. The nozzle inhibitor blocks full insertion of a small-diameter unleaded fuel nozzle into the filler neck closure assembly yet allows full insertion of a large-diameter diesel fuel nozzle into the filler neck closure assembly.

Abstract: A vent apparatus is opened to allow free flow of fuel vapor from a vehicle fuel tank through the vent apparatus to a fuel vapor recovery canister during tank refueling until a predetermined level of liquid fuel is reached in the vent apparatus. Once refueling has been completed, the vent apparatus is closed to block or limit further flow of liquid fuel to the vent apparatus. At the same time, fuel vapor discharge passageways in the vent apparatus that had been closed once the fuel tank had been filled to a predetermined capacity with liquid fuel are reopened so that fuel vapor can flow freely from the fuel tank to the canister even though the volume or height of liquid fuel in the fuel tank has not decreased since the tank was filled during refueling.

Abstract: A tank venting system includes a diaphragm valve movable to open and close a passageway leading to a fuel tank. The system also includes a fuel vapor recovery canister used to adsorb hydrocarbons associated with fuel vapor flowing through the passageway.

Abstract: A nozzle inhibitor is positioned in a filler neck closure assembly between a pivotable outer door and a pivotable inner door to prevent a user from pumping unleaded fuel into a diesel fuel tank. The nozzle inhibitor blocks full insertion of a small-diameter unleaded fuel nozzle into the filler neck closure assembly yet allows full insertion of a large-diameter diesel fuel nozzle into the filler neck closure assembly.

Abstract: A vent apparatus includes a vent housing adapted to be mounted on a fuel tank to extend into an interior region of the fuel tank and a fuel vapor discharge conduit leading from the vent housing to a fuel vapor recovery canister. The vent apparatus further includes a discharge regulator configured to regulate flow of fuel vapor from the vent housing into the fuel vapor discharge conduit.

Abstract: A return fuel temperature control module is adapted for use in controlling the temperature of fuel diverted away from an engine and returned to a fuel tank. The module includes a housing formed to include passageways and a flow controller to control flow of fuel through the passageways.

Abstract: A vent valve for use in controlling discharge of fuel vapor from a fuel tank. The vent valve includes a housing for attachment to the fuel tank includes a wall defining a cavity therein. The float is contained in the cavity of the housing and is responsive to the level of liquid in the fuel tank. The level in the fuel tank rises, the float rises within the housing. When the level of liquid in the fuel tank drops, the float moves downwardly in the housing. A passage is provided in the housing which communicates with an external portion of the tank. The vent valve includes at least one vent positioned proximate to and communicating with the passage for providing venting passage of vapor therethrough and to the passage. The vent valve includes a vent assembly having a flexible diaphragm which is displaceably positioned proximate to the passage to control the flow of vapor through the vent and through the passage.

Abstract: A tank vent valve apparatus includes a valve housing formed to include an inlet port, an outlet port, and an interior region. The interior region is partitioned to define an intake chamber communicating with the inlet port, a discharge chamber communicating with the outlet port, and a float chamber containing a vent port valve and receiving liquid fuel and fuel vapor from the intake chamber. An interior wall defines a boundary between the float chamber and the discharge chamber and includes a valve seat formed to include a vent port therein. The vent port valve is buoyant and moves up and down along the interior wall as liquid fuel rises and falls in the float chamber to close and open the vent port.

Abstract: A tank vent valve apparatus includes a valve housing formed to include an inlet port, an outlet port, and an interior region. The interior region is partitioned to define an intake chamber communicating with the inlet port, a discharge chamber communicating with the outlet port, and a float chamber containing a vent port valve and receiving liquid fuel and fuel vapor from the intake chamber. An interior wall defines a boundary between the float chamber and the discharge chamber and includes a valve seat formed to include a vent port therein. The vent port valve is buoyant and moves up and down along the interior wall as liquid fuel rises and falls in the float chamber to close and open the vent port.

Abstract: A vent valve for use in controlling discharge of fuel vapor from a fuel tank. The vent valve includes a housing for attachment to the fuel tank includes a wall defining a cavity therein. The float is contained in the cavity of the housing and is responsive to the level of liquid in the fuel tank. The level in the fuel tank rises, the float rises within the housing. When the level of liquid in the fuel tank drops, the float moves downwardly in the housing. A passage is provided in the housing which communicates with an external portion of the tank. The vent valve includes at least one vent positioned proximate to and communicating with the passage for providing venting passage of vapor therethrough and to the passage. The vent valve includes a vent assembly having a flexible diaphragm which is displaceably positioned proximate to the passage to control the flow of vapor through the vent and through the passage.

Abstract: A vent apparatus is adapted to be coupled to a fuel tank and includes a valve housing made of a non-weldable plastics material and containing a valve. The vent apparatus further includes a tank mount made of a weldable plastics material and coupled to the valve housing. The tank mount is adapted to be welded to an underlying fuel tank to support the valve housing within a mounting aperture formed in the fuel tank. The tank mount is coupled to the valve housing by a retainer ring formed to include an annular channel opening toward the valve housing. The valve housing includes an annular upper flange extending into an upper region of the annular channel formed in the retainer ring. The tank mount includes an annular lower flange extending into a lower region of that annular channel to mate with the overlying annular upper flange and trap a flange seal therebetween.

Abstract: A vent apparatus is adapted to be coupled to a fuel tank and includes a valve housing made of a non-weldable plastics material and containing a valve. The vent apparatus further includes a tank mount made of a weldable plastics material and coupled to the valve housing. The tank mount is adapted to be welded to an underlying fuel tank to support the valve housing within a mounting aperture formed in the fuel tank. The tank mount is coupled to the valve housing by a retainer ring formed to include an annular channel opening toward the valve housing. The valve housing includes an annular upper flange extending into an upper region of the annular channel formed in the retainer ring. The tank mount includes an annular lower flange extending into a lower region of that annular channel to mate with the overlying annular upper flange and trap a flange seal therebetween.

Abstract: A fuel venting system for fuel tank chambers. The system vents through an opening in one of the chambers, with fuel vapor being transferred from the other chambers to the venting chamber. Fuel vapor transfer between chambers is facilitated by a conduit having a buoyant float attached at one end and flexibly connected at the other end to an anchor device fixed in the vent hole.

Abstract: An apparatus is provided for controlling discharge of fuel vapor from an interior region of a vehicle fuel tank and preventing unsatisfactory liquid fill levels within the interior region of the vehicle fuel tank. The apparatus includes a housing adapted to be mounted in the vehicle fuel tank and formed to include a housing inlet, a vapor-inlet opening, and a passageway therebetween, a float valve disposed in the housing, and a skirt defining a channel around the float valve. Additionally a perforated baffle plate is coupled to the skirt and is formed to include a plurality of openings therethrough.

Abstract: The linear variable pressure adaptive braking and traction control system (10) includes a control valve (70) having a linear actuator (72) and a valve (74). The linear actuator (72) may be operated to displace axially a valve member (82) of the valve (74) and which has a first valve seat (85) controlling fluid flow into a longitudinal passage (84) of the valve member (82). The first valve seat (85) engages a ball valve (101) disposed within an interior opening (97) of a slidable piston (90), the ball valve (101) biased by a resilient mechanism (102). The ball valve (101) also engages a piston valve seat (96) located at an end opening (94) of the piston (90). The piston (90) has a seal (92) thereabout and slides within a bore (76) of the valve (74). A spring mechanism (100) within the bore (76) biases the piston (90 ) toward an end (77) of the bore (76) having a passage (39) which communicates with a pump (50).

Abstract: The invention incorporates a high flow, pilot actuated pressure relief/rollover valve into a refueling vapor recovery system having a vapor vent line for recirculating vapor past the aspirator of a refueling nozzle and a nozzle seal for engaging a refueling nozzle in an airtight manner. All vapor of evaporative hydrocarbons created during the act of refueling are routed directly to an onboard storage canister.

Abstract: A vapor vent control valve arrangement for a fluid tank is disclosed. The valve arrangement includes a solenoid operated valve with a normally-open parallel switch assembly and a normally-closed switch in an electrical circuit to activate the solenoid valve. An impact switch may also be provided as a safety precaution in the series circuit. The valve assembly is spring-biased to provide an over-pressure check valve function and also includes a back-pressure relief valve.