Abstract: A fuel delivery system is provided herein. The fuel delivery system may include a fuel tank storing a liquid fuel, a return fuel line including an outlet opening into the fuel tank, and a heat pipe assembly including a first end positioned in a surrounding atmosphere, and a second end positioned at and coupled to the return fuel line.

Abstract: Methods and systems are provided for conditioning fuel for diesel engine. The system may include a fuel pump located within a fuel tank configured to pump fuel to the diesel engine. The system may also include a fuel filter located outside of the fuel tank operatively located upstream of a flow of fuel from the fuel pump. A method may include directing fuel from inside of the fuel tank through a fuel filter located outside of the fuel tank into a vacuum chamber positioned inside the fuel tank, before directing the fuel to the diesel engine.

Abstract: A system of alternate hose line bundling allows for exclusion of a higher pressure hose line from fasteners directly attached to a vehicle body. Alternatively to mounting to the vehicle body, the higher pressure hose line is coupled to a lower pressure hose line via fasteners which lack mounting features. Eliminating attachment of higher pressure hose lines to the vehicle body reduces noise, vibration, and harshness (NVH) experienced by passengers in the vehicle.

Abstract: A system comprises a fuel system for delivering fuel to an engine for combustion and a reductant storage system for delivering reductant to the exhaust stream for an SCR catalyst for NOx reduction. The fuel system further comprises a water separator for separating water-based fluid from fuel in the fuel tank, and a separation reservoir to collect the separated water-based fluid. Based on readings of a water-in-fuel sensor positioned within the reservoir, a type of degradation (e.g., water build-up, high-water-content fuel, mis-filling of the reductant, etc.) may be determined and indicated.

Abstract: A fuel system for an engine is provided herein. According to one embodiment, the fuel system includes a fuel supply coupled to a low pressure fuel pump, the low pressure fuel pump coupled to a high pressure fuel pump to provide fuel to a fuel rail. Further, the fuel system includes a plurality of injectors coupled to the fuel rail to provide fuel to a plurality of engine cylinders. Further still, the fuel system includes a first fuel return line coupling the fuel rail to the fuel supply and a thermal recirculation valve, the thermal recirculation valve further coupled to a low pressure pump intake line; a second fuel return line coupling the high pressure fuel pump to the first fuel return line; and a third fuel return line coupling the plurality of injectors to a high pressure pump intake line.

Abstract: A system comprises a fuel system for delivering fuel to an engine for combustion and a reductant storage system for delivering reductant to the exhaust stream for an SCR catalyst for NOx reduction. The fuel system further comprises a water separator for separating water-based fluid from fuel in the fuel tank, and a separation reservoir to collect the separated water-based fluid. Based on readings of a water-in-fuel sensor positioned within the reservoir, a type of degradation (e.g., water build-up, high-water-content fuel, mis-filling of the reductant, etc.) may be determined and indicated.

Abstract: A system of alternate hose line bundling allows for exclusion of a higher pressure hose line from fasteners directly attached to a vehicle body. Alternatively to mounting to the vehicle body, the higher pressure hose line is coupled to a lower pressure hose line via fasteners which lack mounting features. Eliminating attachment of higher pressure hose lines to the vehicle body reduces noise, vibration, and harshness (NVH) experienced by passengers in the vehicle.

Abstract: A method is described for cooling fuel for a diesel engine system with a common rail fuel injection system having a coolant pump and a fan. The method comprises passing a returning fuel from the engine through a fuel to coolant heat exchange system to cool the fuel, and adjusting the cooling of the fuel by controlling the coolant pump and/or the engine cooling fan.

Abstract: A method is described for cooling fuel for a diesel engine system with a common rail fuel injection system having a coolant pump and a fan. The method comprises passing a returning fuel from the engine through a fuel to coolant heat exchange system to cool the fuel, and adjusting the cooling of the fuel by controlling the coolant pump and/or the engine cooling fan.

Abstract: A method is described for cooling fuel for a diesel engine system with a common rail fuel injection system having a coolant pump and a fan. The method comprises passing a returning fuel from the engine through a fuel to coolant heat exchange system to cool the fuel, and adjusting the cooling of the fuel by controlling the coolant pump and/or the engine cooling fan.

Abstract: A fuel cooling system for a diesel internal combustion engine system having a set of engine cylinders, a fuel storage tank, and a common rail fuel injection system comprises of a fuel distribution circuit for carrying fuel from the fuel storage tank to the engine cylinders; a fuel recycling circuit for recycling un-injected fuel; a temperature sensor for sensing fuel temperature; a fuel to coolant heat exchange system for cooling the fuel wherein the fuel to coolant heat exchange system comprises a coolant reservoir, an electric coolant pump, and a heat exchange manifold; a mechanism for controlling the electric coolant pump operation; an air to coolant heat exchange system coupled to the fuel to coolant heat exchange system for cooling the coolant in the fuel to coolant heat exchange system wherein the air to coolant heat exchange system is exposed to vehicle ram air and includes a heat exchange manifold and a cooling fan; and a mechanism for controlling the cooling fan.

Abstract: A fuel transfer and conditioning unit for an automotive vehicle includes a reservoir with a generally cylindrical filter element and a pump module contained within the reservoir and extending within the filter element. A combination valve prevents forward flow of fuel through the pump module unless the filter element is installed within the reservoir and also prevents reverse flow of fuel from the engine in the event the filter element is removed for maintenance.

Abstract: A fuel tank sealing system for a fuel tank filler tube is disclosed in which the fuel system is sealed when the fuel cap is not installed, or improperly installed and allows pressure equalization during the insertion of a refueling nozzle. A vent valve is first actuated by partial insertion of the nozzle and allows pressure equalizing flow to bypass the refueling nozzle. A flap valve is then actuated by complete insertion of the refueling nozzle to allow fuel to enter the fuel tank.