Methods and systems are provided for indicating whether a canister purge valve in a vehicle evaporative emissions control system is degraded. In one example, an air intake system hydrocarbon (AIS HC) trap temperature may be monitored during a refueling event, and responsive to an indication that the AIS HC trap temperature change is greater than a predetermined threshold, it may be indicated that the canister purge valve is degraded. In this way, diagnosis of whether a vehicle canister purge valve is degraded may be indicated without the use of engine manifold vacuum, and may be advantageous for vehicles configured to operate for significant amounts of time without engine operation, or without intake manifold vacuum.

A fuel tank lid unit includes a tank lid, an accommodation unit, and an inner terminal. The tank lid closes an opening at an upper part of a fuel tank. The accommodation unit is provided at an upper part of the tank lid, and accommodates an electronic circuit in therein. The inner terminal penetrates the tank lid and connects the electronic circuit and an electronic component inside the fuel tank. The accommodation unit includes a communication opening communicating internal and external spaces. The internal space in the accommodation unit includes a first region where the electronic circuit is arranged and a second region provided below the first region and surrounding the inner terminal. In a plan view of the accommodation unit, an area of the second region is smaller than that of the first region. Further, a communication opening is provided below a first region-side end of the second region.

Power machine fuel tanks include a plug receptacle and a cover for the plug receptacle which seals the plug receptacle from an interior of the fuel tank. A receptacle insert positioned within the plug receptacle allows a fuel plug to be removably secured to the fuel tank. The cover prevents leakage from inside the fuel tank through the plug receptacle, regardless of whether the plug is secured within the receptacle insert, unless the cover has been removed from a sealing position.

The present disclosure is directed to a fuel tank fill pipe assembly configured to conduct liquid fuel from a fuel-dispensing nozzle to a fuel tank. The fuel tank fill pipe assembly includes a filler head assembly shaped to receive the fuel-dispensing nozzle and a filler pipe that extends from the filler head assembly toward the fuel tank. In illustrated embodiments, a coupler is included for attaching the filler head assembly to the filler pipe while blocking fuel vapor from escaping the fuel tank fill pipe assembly so that hydrocarbons present in the fuel vapor are not released into the environment.

A filler and/or charger flap liner (3) is provided with a seal arrangement. The filler and/or charger flap liner (3) is to be arranged in an opening (6) of an outer side part (4) and in an opening (7) of an outer wheel arch (5). The filler and/or charger flap liner (3) is to be arranged with a first bearing element (8) on an edge of the opening (6) of the outer side part (4) and is to be arranged with a second bearing element (9) on an edge of the opening (7) of the outer wheel arch (5). An at least partially circumferential sealing element (10) is arranged radially outside the openings (6, 7) of the outer side part (4) and the outer wheel arch (5).

A method and system for forming a self-sealing volume includes an elastomeric composite structure. The structure includes layers of a cast polyurethane derived from a neat polyurethane monomer reaction mixture that does not substantially react at room temperature. The polyurethane monomer reaction layer includes a reaction product of an organic polyisocyanate and a reactive hydrogen-containing material reacted with a mixture of a monomeric polyol and polymeric polyols. The structure may further include one or more layers of a fabric that have been precoated with an aliphatic polyurethane, and one or more sealing layers. A fuel impermeable inner liner may be positioned in an inner region. The sealing layers may comprise at least one of partially vulcanized natural rubber (NR), polyisoprene (IR), styrene butadiene (SBR), or a blend of SBR with NR or IR. A dimensionally correct, self-sealing volume may be created by inflating the volume during its cure.

A quick connector of a fuel transfer line is provided to implement fuel blocking function upon abnormal fastening to a fuel inflow/outflow nipple disposed in a fuel transfer line of a vehicle and prevents fuel leakage due to incomplete fastening to the fuel inflow/outflow nipple. The quick connector is fastened to a fuel inflow/outflow nipple of a fuel transfer line and includes a connector casing that has a rear end to which a fuel inflow/outflow nipple is inserted and fastened. Additionally, a bypass cylinder is inserted into a front end of the connector casing in a linearly movable manner by hydraulic pressure of fuel and forms a flow path for a selective flow of fuel depending on a location within the connector casing.

A fuel pump cover assembly and method for a vehicle includes a cover arranged over the vehicle fuel pump for inhibiting water access to the vehicle fuel pump and at least one clip securing the cover to a feed line for the vehicle fuel pump.

A cover assembly and method for a vehicle fuel pump includes a cover base secured in a fixed position relative to the vehicle fuel pump and a flexible cover connected to the cover base and positioned by the cover base to inhibit water access to the vehicle fuel pump. The method includes securing the cover base in a fixed position relative to the vehicle fuel pump, connecting the flexible cover to the cover base, and positioning the flexible cover with the cover base to inhibit water access to the vehicle fuel pump.

A ventilation nipple configured to ventilate a tank component that is composed of a plastic material, a tank device that includes such a ventilation nipple, and a method for producing such a tank device. The ventilation nipple includes a ventilation opening and a flange body arranged in an annular manner around the ventilation opening. The flange body has a first annular collar and a second annular collar each configured for connection via a weld connection to the tank component. The first annular collar and the second annular collar are arranged coaxially with respect to each other and also with respect to the ventilation opening. The first annular collar and the second annular collar define an annular hollow space configured to receive a sealing agent and/or an adhesive between the first annular collar and the second annular collar.