Methods and systems are provided for providing improving customer satisfaction during a vehicle fuel tank refueling event. A fuel system is configured with a three-way isolation valve and a four port canister. Fuel tank depressurization is expedited by directing fuel tank vapors to a dedicated depressurization port of the canister.

A dual fuel tank system for a machine having a frame and an engine enclosure mounted on a rear portion of the frame includes a pair of support plates located at the rear portion of the frame and welded onto a pair of sides of the frame. Further, the dual fuel system also includes a pair of upper and lower support brackets secured onto each side of the engine enclosure. Furthermore, the dual fuel system also includes a pair of fuel tanks disposed on the pair of sides of the engine enclosure. Each fuel tank is releasably secured onto the support plate and an associated pair of the upper and lower support brackets.

A connection structure for pressure vessels is configured such that respective mouth pieces are connected to at least one ends of the pressure vessels, and when adjacent mouth pieces are connected to each other in an intersection direction intersecting with the axial direction, the pressure vessels placed in parallel can be connected to each other. The mouth piece includes a connecting portion along the intersection direction intersecting with the axial direction. The connecting portion includes an external screw thread portion formed on a first side thereof, and a nut rotatably locked to a second side thereof and having an internal screw thread portion threadedly engageable with the external screw thread portion.

A gas tank arrangement for an internal combustion engine is provided, the gas tank arrangement including a gas tank configured to contain a combustible gas, and a first additional gas tank positioned in downstream fluid communication with the gas tank, wherein the gas tank arrangement further includes a second additional gas tank positioned in downstream fluid communication with the gas tank and in upstream fluid communication with the first additional gas tank. A vehicle including such a gas tank arrangement is also provided.

Methods and systems are provided for enabling a vehicle for which a jet pump that functions to transfer fuel from a passive side to an active side of a saddle fuel tank is degraded, to reach a desired destination by the taking of mitigating action. The mitigating action includes conducting a driving maneuver in response to an indication that the jet pump is degraded, the driving maneuver conducted in order to transfer a desired amount of fuel from the passive side to the active side. In this way, a vehicle may reach a desired destination even under circumstances where the vehicle may otherwise be unable to reach the desired destination.

A mower may include a body frame, a mower unit installed to the body frame, a grass collection container optionally installed at a rear portion of the body frame, a front-wheel support arm provided at a front portion of the body frame, a left front wheel and a right front wheel supported by the front-wheel support arm, a counterweight, and a weight bracket. The weight bracket may be provided on the front-wheel support arm and configured to attach the counterweight thereto. The counterweight may include a plurality of weight elements. The weight bracket may include a plurality of attachment portions. The at least one weight element may be attached to each attachment portion.

An ultrasonic fuel supplying apparatus includes an ultrasonic fuel tank including a fuel storing space for accommodating a fuel and a fuel atomizing space for accommodating an atomized fuel, an input pipe for supplying the fuel from an external main fuel tank to the ultrasonic fuel tank, at least one ultrasonic transducer arranged at a lower portion of the ultrasonic fuel tank and configured to atomize the fuel accommodated in the fuel storing space, an ultrasonic transducer controller configured to drive the at least one ultrasonic transducer, an output pipe for supplying atomized fuel from the ultrasonic fuel tank to an external fuel injection unit, and an output pipe extending unit extended from the output pipe into the fuel atomizing space and including an opening at a distal end.

A reserve fuel tank retention and control (RTRC) module and a method of operating a vehicle including an engine and a main fuel tank containing a fuel, the method including mounting the RTRC module onto the vehicle; fluidly connecting the RTRC module to the engine and to the main fuel tank; actuating a valve of the RTRC module for a predetermined time to purge moisture in a fuel supply hose into the engine; and upon the main fuel tank becoming empty, actuating the valve to allow fuel from the reserve fuel tank to supply the engine.

An improved ball valve for use between dual fuel tanks having a non-circular outlet aperture leading to the fuel line and engine that can allow fuel to pass therethrough even when the ball contained within the valve rests in the opening of the outlet aperture.

A fuel tank system is provided. In the main tank of the system, the end of a communication pipe is located above the end of a fuel introduction pipe inserted into the main tank. The end of a first pressure relief pipe at which a first cut-off valve is provided is located above the end of the communication pipe. In the auxiliary tank, the end of the communication pipe is located above the end of the fuel introduction pipe inserted into the auxiliary tank. In the auxiliary tank, the end of a second pressure relief pipe at which a second cut-off valve is provided is located above an end of a scavenging pipe.