Fuel line with integral co-axial return line
AssigneeBrunswick Corporation
InventorDanny L. Dimond
Life of this patent
Estimating the term…
Abstract
A fuel system for an internal combustion engine having a fuel pump (14) communicating with a fuel tank (12) and delivering fuel to a fuel monitoring device (18) and including a device (18) for detecting and returning excess or vaporized fuel to the tank (12) is provided with a return fuel line for returning the detected vaporized or excess fuel to the tank with at least a portion of the return fuel line co-axial with and contained within the supply line.
Claims5
In a gasoline fuel system for an internal combustion engine having a fuel pump communicating with a fuel tank and delivering fuel to a device for introducing measured amounts of fuel into the engine and including a device for detecting and returning vaporized fuel and excess fuel to the tank, a fuel line connecting these components comprising:
- a supply conduit for delivering fuel from the tank to the engine via the fuel pump, the detecting device and the measuring device and
- a return conduit for returning detected vaporized or excess fuel to the tank with at least a portion of said return conduit co-axial with and contained within said supply conduit to prevent the escape of fuel vapor to the atomosphere.
In a fuel system for an internal combustion engine having a fuel pump communicating with a fuel tank and delivering fuel to a device for introducing measured amounts of fuel into the engine and including a device for detecting and returning vaporized fuel and excess fuel to the tank, a fuel line connecting these components comprising:
- a supply conduit for delivering fuel from the tank to the engine via the fuel pump, the detecting device and the measuring device and
- a return conduit for returning detecting vaporized or excess fuel to the tank with at least a portion of said return conduit co-axial with and contained within said supply conduit,
- wherein:
- said fuel line comprises a first section connecting the fuel tank to the fuel pump and a second section connecting the fuel pump to the detection device and the return conduit is co-axial with and contained within the supply conduit in said first section;
- the return conduit is co-axial with and contained within the supply conduit in said second section.
In a fuel system for an internal combustion engine having a fuel pump communicating with a fuel tank and delivering fuel to a device for introducing measured amounts of fuel into the engine and including a device for detecting and returning vaporized fuel and excess fuel to the tank, a fuel line connecting these components comprising:
- a supply conduit for delivering fuel from the tank to the engine via the fuel pump, the detecting device and the measuring device and
- a return conduit for returning detecting vaporized or excess fuel to the tank with at least a portion of said return conduit co-axial with and contained within said supply conduit,
- wherein:
- the end of said return conduit communicating with the fuel tank is disposed above the level of fuel in the fuel tank;
- the pressure in said supply conduit is less than that in said return conduit so that a rupture in said return conduit causes air from the fuel tank to be introduced into said supply conduit via said return conduit.
Dependencies are inferred from the claim text.