A fuel supply device may include a housing including a housing body and a lid. The housing body may form a fuel storage tank. A fuel pump, a regulator, and a fuel storage amount adjusting unit may be disposed in the housing. The lid may have an excess fuel discharge path through which excess fuel flowing down from the regulator is fed to an inner wall side of the housing body. The housing body may have an upward fuel receiving surface that receives the excess fuel discharged at a lower position on an end side of the excess fuel discharge path. The fuel receiving surface may be structured and arranged such that the excess fuel discharged through the excess fuel discharge path is temporarily received by the fuel receiving surface and then returned to the fuel storage tank along an inner wall surface of the housing body.

System for adapting an internal combustion engine to be powered by gaseous fuel in gas phase and by gaseous fuel, an internal combustion engine arrangement comprising the system and a method for adapting an internal combustion liquid fuel engine to be powered by gaseous fuel in gas phase and gaseous fuel in liquid phase.

Methods and systems are provided for determining a source of degradation stemming from a vehicle fuel system during a refueling event. Specifically, in one example a method may include responsive to a refueling lock that enables access to a fuel tank of a fuel system being manually unlocked in order to add fuel to the fuel tank, monitoring a pressure in the fuel system and a fuel level in the fuel tank during refueling the fuel tank, and indicating degradation of the fuel system as a function of both the pressure and the fuel level. In this way, fuel system degradation may be pinpointed during a refueling event that is enabled via manual unlocking of the refueling lock.

Provided is a fuel tank made of resin, including: a fuel tank body that is enclosed by a bottom wall, side walls, and an upper wall, the fuel tank body including a first storage portion, a second storage portion, and a coupling portion, the coupling portion communicating an upper portion of the first storage portion and an upper portion of the second storage portion; a pump module disposed in the first storage portion; an open portion formed in the first storage portion; a strut provided in the first storage portion; a separator provided on the strut; a suction portion disposed in the second storage portion; a fuel transfer line that communicates the suction portion to the pump module; a holding portion and a provisional holding portion provided at the separator, the provisional holding portion being configured to removably hold the extra-length portion of the fuel transfer line.

The invention is directed to a liquid container monitoring and maintenance system. In an aspect, the liquid container monitoring and maintenance system (LCMMS) is a self-contained system that is compatible to monitor and maintain various liquids stored in various types and sizes of containers. In such aspects, the LCMMS is an all in one solution for monitoring and maintaining the liquid within the container. The LCMMS is configured to be an external system that can couple to various storage containers via various access ports. The LCMMS is configured to automatically monitor and maintain the liquid contained within the container. In an aspect, the LCMMS can be remotely controlled, as well as provide reporting to various users.

A work vehicle including a drive device (10) having an internal combustion engine (12) for driving a vehicle body (1) has: a first tank (32) that is disposed in front of or behind the drive device, and stores fuel (9) to be supplied to the internal combustion engine; a second tank (34) that is disposed below the drive device so as to be separated from the first tank by a predetermined distance, and stores the fuel to be supplied to the internal combustion engine; a first storage amount detection part (70) that is disposed in the first tank, and detects an amount of the fuel stored in the first tank; and a second storage amount detection part (80) that is disposed in the second tank, and detects an amount of the fuel stored in the second tank.

A vehicle includes an engine and a fuel system. The fuel system includes a fuel tank that stores liquefied petroleum (LP) fuel. The fuel tank includes a tank outlet port and a tank return port. The fuel distribution system supplies fuel from the fuel tank to the engine and returns unused fuel to the fuel tank. The fuel distribution system includes an engine supply line coupled to the tank outlet port, and a fuel rail disposed on the engine and coupled to the engine supply line. The fuel system includes a fuel discharge valve disposed on the fuel distribution system for removing fuel from the fuel distribution system.

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.

Methods and systems are provided for determining an offset of a pressure sensor that is used for monitoring pressure in a fuel system that is sealed expect for refueling and other diagnostic events. In one example, a method includes waking a controller of a vehicle when it is expected that a pressure in a fuel system that is sealed from atmospheric pressure is at atmospheric pressure, unsealing the fuel system, and indicating an offset of the pressure sensor based on a pressure change after the fuel system is unsealed. In this way, pressure sensor offset may be determined regularly without undesirably loading a fuel vapor storage canister with vapors, which may be particularly advantageous for hybrid vehicles.

In at least some implementations, a fuel vapor separator for an internal combustion engine includes a main body at least partially defining a chamber for holding fuel, a lid carried by the main body to close the chamber and at least partially define a vapor chamber above a level of fuel in the chamber, and a thermoelectric heat exchanger coupled to the main body. In at least some implementations, the main body is a thermally conductive polymeric material that is resistant to degradation or dimensional changes, and in some implementations, the main body may be formed from a metal.