Heat exchanger system for charge forming apparatus
AssigneeBorg-Warner Corporation
InventorPaul E. Rickert
Life of this patent
Estimating the term…
Abstract
The disclosure embraces a fuel system and charge forming apparatus of the float bowl type including a heat exchanger or heat transfer means associated with the charge forming apparatus providing a fuel circulating system or circuit for conveying heat away from the fuel in the charge forming apparatus to maintain the fuel below temperatures at which the fuel readily vaporizes to prevent or minimize "vapor lock" in the fuel bowl and fuel channels of the charge forming apparatus.
Claims21
Charge forming apparatus including, in combination, a body construction having a fuel and air mixing passage, aperture means for discharging fuel into the mixing passage, a fuel chamber in the body construction, passages in the body construction for conveying fuel from the fuel chamber to the aperture means, means associated with the fuel chamber for regulating flow of liquid fuel into the fuel chamber, means for conveying fuel under pressure from a supply through an inlet passage to the fuel flow regulating means, a heat exchanger member secured to said body construction in heat-transferring relation with a surface of the body construction, said heat exchanger member having an elongated fuel circulating channel therein, the channel in the heat exchanger member being a perforate region of undulated configuration, passage means for delivering fuel from the inlet passage to the channel in said heat exchanger member, a fuel outlet passage in communication with the channel, and means connected with the outlet passage for returning fuel circulating in said channel to the fuel supply.
Charge forming apparatus including, in combination, a body construction having a fuel and air mixing passage, aperture means for discharging fuel into the mixing passage, a fuel chamber in the body construction, passages in the body construction for conveying fuel from the fuel chamber to the aperture means, means associated with the fuel chamber for regulating flow of liquid fuel into the fuel chamber, means for conveying fuel under pressure from a supply through an inlet passage to the fuel flow regulating means, a heat exchanger member secured to said body construction in heat-transferring relation with a surface of the body construction, said heat exchanger member being a planar laminate having an elongated fuel circulating channel therein, passage means for delivering fuel from the inlet passage to the channel in said heat exchanger member, a fuel outlet passage in communication with the channel, and means connected with the outlet passage for returning fuel circulating in said channel to the fuel supply.
Charge forming apparatus including, in combination, a body construction having a fuel and air mixing passage, aperture means for discharging fuel into the mixing passage, a fuel chamber in the body construction, passages in the body construction for conveying fuel from the fuel chamber to the aperture means, means associated with the fuel chamber for regulating flow of liquid fuel into the fuel chamber, means for conveying fuel under pressure from a supply through an inlet passage to the fuel flow regulating means, a heat exchanger member secured to said body construction in heat-transferring relation with a surface of the body construction, said heat exchanger member being of gasket material having an elongated fuel circulating channel therein, passage means for delivering fuel from the inlet passage to the channel in said heat exchanger member, a fuel outlet passage in communication with the channel, and means connected with the outlet passage for returning fuel circulating in said channel to the fuel supply.
Charge forming apparatus, in combination, a body construction, said body construction including a first body section and a second body section, a fuel and air mixing passage in one body section, a fuel chamber in the other body section, aperture means for discharging fuel into the mixing passage, passages in the body construction for conveying fuel from the fuel chamber to the aperture means, means associated with the fuel chamber for regulating flow of liquid fuel into the fuel chamber, a cover member for the body section providing the fuel chamber, said fuel flow regulating means being mounted by the cover member, a fuel inlet passage in the cover member, means for conveying fuel under pressure from a supply to the fuel flow regulating means, a heat exchanger member secured to said body construction in heat-transferring relation with a surface of the body construction, said heat exchanger member having an elongated fuel circulating channel therein, passage means for delivering fuel from the inlet passage to the channel in said heat exchanger member, a fuel outlet passage in communication with the channel, said fuel outlet passage being in the body section providing the fuel chamber, and means connected with the outlet passage for returning fuel circulating in said channel to the fuel supply.
Charge forming apparatus, in combination, a body construction, said body construction including a first body section and a second body section, a fuel and air mixing passage in the first body section, a fuel chamber in the second body section, aperture means for discharging fuel into the mixing passage, a fuel chamber in the body construction, passages in the body construction, means associated with the fuel chamber for regulating flow of liquid fuel into the fuel chamber, means for conveying fuel under pressure from a supply through an inlet passage to the fuel flow regulating means, a heat exchanger member secured to said body construction, said heat exchanger member being in contiguous heat-transferring relation with a surface of the second body member, said heat exchanger member having an elongated fuel circulating channel therein, passage means for delivering fuel from the inlet passage to the channel in said heat exchanger member, a fuel outlet passage in communication with the channel, a plurality of laminar members disposed between the heat exchanger member and the first body section, said laminar members and the heat exchanger member having perforate regions in communication with the passages in the body construction for conveying fuel from the fuel chamber to the aperture means, means securing the body sections, the laminar members and the heat exchanger member in assembled relation, and means connected with the outlet passage for returning fuel circulating in said channel to the fuel supply.
Charge forming apparatus including, in combination, a body construction having a first body section and a second body section, a fuel and air mixing passage in the first body section, aperture means for delivering fuel into the mixing passage, said second body section having a fuel chamber, means associated with the fuel chamber for regulating fuel flow into the chamber, a cover member for the fuel chamber having a fuel inlet passage, a heat exchanger laminate in contiguous relation with a surface of the second body section, a plurality of laminar members disposed between the heat exchanger laminate and the first body section, means securing the body sections, the laminar members and the heat exchanger laminate in assembled relation, said laminar members and heat exchanger laminate having perforate regions through which fuel flows from the fuel chamber to the orifice means, said heat exchanger laminate having an elongated channel therein spaced from the perforate regions, said fuel inlet passage adapted to receive fuel under pressure from a supply, means in communication with the fuel inlet passage for conveying fuel to one end region of the channel in the heat exchanger laminate, and a fuel outlet passage in said second body section in communication with the other end region of the channel in the heat exchanger laminate, said outlet passage adapted to be connected with means for returning circulating fuel from the channel to the fuel supply.
A fuel system for an internal combustion engine including charge forming apparatus and a fuel supply therefor, said charge forming apparatus having a body construction providing a fuel bowl, means associated with said fuel bowl for regulating fuel flow into the fuel bowl, a fuel pump connected with the fuel supply and adapted to pump fuel in excess of the fuel requirements for the engine, a heat exchanger laminar member secured to the body construction in heat-transferring relation therewith, said heat exchanger laminar member having a fuel circulating channel therein, means conveying fuel from the fuel pump to the fuel bowl and to the channel in the heat exchanger laminar member, and means establishing communication between the channel in said heat exchanger laminar member and the fuel supply for continuously returning circulating fuel in said channel to the fuel supply during operation of the fuel pump.
A fuel system for an internal combustion engine including charge forming apparatus and a supply of liquid fuel therefor, said charge forming apparatus having a body construction providing a fuel bowl, means associated with said fuel bowl for regulating fuel flow into the fuel bowl, a fuel pump connected with the fuel supply and adapted to pump fuel in excess of the fuel requirements for the engine, a plurality of heat exchanger laminar members secured to the body construction in heat-transferring relation therewith, each of said heat exchanger members having a fuel circulating channel therein, means conveying fuel from the fuel pump to the fuel bowl and to the channels in the heat exchanger laminar members, and means establishing communication of the channels in said heat exchanger laminar members with the fuel supply for returning fuel circulating in each of said channels to the fuel supply during operation of the fuel pump.
A fuel system for an internal combustion engine including charge forming apparatus and a supply of liquid fuel therefor, said charge forming apparatus having a body construction providing a fuel bowl, means associated with the fuel bowl for regulating fuel flow into the fuel bowl, a fuel pump connected with the fuel supply and adapted to pump fuel in excess of the fuel requirements for the engine, a heat exchanger means for the charge forming apparatus, said heat exchanger means including a heat exchanger laminar member having an open area providing an elongated fuel circulating channel, one major surface of the laminar member being in contiguous heat-transferring relation with a surface of the body construction, a laminate engaging the other major surface of the laminar member, means conveying fuel from the fuel pump to the fuel bowl and to the channel in the laminar member, and means establishing communication between the channel in the laminar member and the fuel supply for returning fuel circulating in said channel to the fuel supply during operation of the fuel pump.
A fuel system including charge forming apparatus comprising a body construction having a fuel bowl adapted to be supplied with liquid fuel from a supply, fuel passage means in said body construction, means associated with said fuel bowl for regulating fuel flow from the passage means into the fuel bowl, said passage means adapted to receive liquid fuel under pressure from the supply, a heat exchanger means including a laminar member secured to the body construction and in heat-transferring relation therewith, said laminar member having an undulated fuel circulating channel, said passage means being in communication with one end of said channel for conveying fuel from the passage means into the channel, and fuel conveying means in communication with the other end of the channel and the fuel supply for returning circulating fuel from the channel to the fuel supply.
Charge forming apparatus including, in combination, a body construction having a fuel and air mixing passage and a fuel chamber, aperture means for discharging fuel from the fuel chamber into the mixing passage, said body construction having a planar surface, a planar heat exchanger member having a fuel circulating channel therein, said heat exchanger member being in contiguous heat-transferring relation with the planar surface of the body construction, a laminate in contiguous engagement with the heat exchanger member, fuel inlet and outlet passages in said laminate, said fuel inlet and outlet passages being in communication with the fuel circulating channel in the heat exchanger member, and means securing said body construction, heat exchanger member and laminate in assembled relation.
Dependencies are inferred from the claim text.