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US 4,003,968 AGranted
Charge forming method and apparatus
AssigneeBorg-Warner Corporation
InventorPaul E. Rickert
Life of this patent
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AssigneeBorg-Warner Corporation
InventorPaul E. Rickert
Estimating the term…
The disclosure embraces a charge forming apparatus or carburetor and method of operation thereof wherein the charge forming apparatus is of modular construction and is inclusive of a body construction and a fluid flow control construction associated with the body construction, the fluid flow control construction being of laminar character fashioned with open areas or passages accommodating fluid flow or transfer, the fluid flow control being of a character enabling the interchangeability of fluid flow control laminations having different or modified patterns or arrangements of open areas or passages whereby the method of operation or the operating or metering characteristics of the charge forming apparatus may be changed or modified without alteration of the body construction. The provision of interchangeable fluid flow control laminations or members facilitates standardization of the body whereby the standardized charge forming apparatus may be rendered usable with engines of different sizes and operating characteristics by employing a fluid flow control construction having a selected orientation of open areas or passages accommodating fluid flow.
Charge forming apparatus comprising, in combination, a body construction including a first body member providing a fuel and air mixing passage, a second body member providing a fuel cavity, aperture means opening into the mixing passage, fluid flow control laminar means disposed between the body members having perforate pattern regions providing passages for fuel and air, a flexible diaphragm forming one wall of the fuel cavity, a recess in the second body member, a fuel inlet valve disposed for slidable movement in said recess, and means in the fuel cavity arranged to transmit movements of the diaphragm to the inlet valve for controlling fuel flow into the fuel cavity.
Charge forming apparatus comprising, in combination, a body construction including a first body member providing a fuel and air mixing passage, a second body member providing a fuel cavity, aperture means opening into the mixing passage, laminar means disposed between the body members having perforations providing passages for fuel and air for delivery to the aperture means, a flexible diaphragm forming one wall of the fuel cavity, a recess in the second body member, a fuel inlet valve disposed for slidable movement in said recess, means in said fuel cavity arranged to transmit movements of the diaphragm to the inlet valve for controlling fuel flow into the fuel cavity, and restrictor means for regulating fuel flow from the fuel cavity to the aperture means.
Charge forming apparatus comprising, in combination, a body construction including a first body member providing a fuel and air mixing passage, a second body member providing a fuel cavity, aperture means opening into the mixing passage, said aperture means including a main fuel delivery orifice and an engine idling fuel delivery orifice, fluid flow control laminar means disposed between the body members having perforate pattern regions providing passages for fuel and air, a flexible diaphragm forming one wall of the fuel cavity, a recess in the second body member, a fuel inlet valve disposed for slidable movement in said recess for controlling fuel flow into the fuel cavity, means in the fuel cavity arranged to transmit movements of the diaphragm to the inlet valve for controlling fuel flow into the fuel cavity, a first adjustable restrictor means for regulating fuel flow to the main discharge orifice, and second adjustable restrictor means for regulating fuel flow to the engine idling orifice means.
Charge forming apparatus comprising, in combination, a body construction including a first body member providing a fuel and air mixing passage, a second body member providing a fuel cavity, aperture means opening into the mixing passage, fluid flow control laminar means disposed between the body members having perforate pattern regions providing passages for fuel and air, a flexible diaphragm forming one wall of the fuel cavity, said first body member having a chamber, said second body member having a portion extending into the chamber in the first body member, said extending portion having a recess, a fuel inlet valve disposed for slidable movement in said recess for controlling the fuel flow from the chamber into the fuel cavity in the second body member, means in the fuel cavity arranged to transmit movements of the diaphragm to the inlet valve for controlling fuel flow into the fuel cavity, and adjustable valve means mounted by one of said body members for regulating fuel flow to the aperture means.
Charge forming apparatus comprising, in combination, a body construction including a first body member providing a fuel and air mixing passage, a second body member providing a fuel cavity, aperture means opening into the mixing passage, said aperture means including a main fuel delivery orifice and an engine idling fuel delivery orifice, laminar means disposed between the body members having perforations providing fluid flow passages, a flexible diaphragm forming one wall of the fuel cavity, a recess in the second body member, a fuel inlet valve disposed for slidable movement in said recess for controlling fuel flow into the fuel cavity, means in the fuel cavity arranged to transmit movements of the diaphragm to the inlet valve for controlling fuel flow into the fuel cavity, an air bypass opening into the mixing passage in said first body member, one of said perforations in said laminar means establishing communication between said air bypass and the engine idling fuel delivery orifice for mixing air with the fuel delivered through the engine idling fuel delivery orifice.
Charge forming apparatus comprising, in combination, a body construction including a first body member providing a fuel and air mixing passage, a second body member providing a fuel cavity, aperture means opening into the mixing passage, fluid flow control laminar means disposed between the body members having perforate pattern regions providing passages for fuel and air, a flexible diaphragm forming one wall of the fuel cavity, a fuel inlet valve, means in the fuel cavity arranged to transmit movements of the diaphragm to the inlet valve for controlling fuel flow into the fuel cavity, and restrictor means mounted by the second body member for regulating fuel flow from the fuel cavity to the aperture means.
Charge forming apparatus, in combination, a body construction comprising a first body member and a second body member, fluid flow control laminar means disposed between the body members, one of the body members having a fuel and air mixing passage, a fuel cavity provided in the second body member, float-controlled valve means associated with the second body member for regulating fuel flow into the fuel cavity, main fuel delivery orifice means in the first body member opening into the mixing passage, supplemental fuel delivery orifice means in the first body member opening into the mixing passage, laminar means disposed between the body members having perforate pattern regions establishing communication of the fuel cavity with the main orifice means and with the supplemental orifice means, air bypass means in the first body member, and perforate pattern regions in the laminar means arranged to convey air from the air bypass means for mixing with fuel providing a fuel and air emulsion.
Charge forming apparatus, in combination, a body construction comprising a first body member and a second body member, a fuel and air mixing passage provided in the first body member, a fuel cavity in the second body member, main fuel delivery orifice means in the first body member opening into the mixing passage, supplemental fuel delivery orifice means in the first body member opening into the mixing passage, float-controlled, valve means associated with the second body member for regulating fuel flow into the fuel cavity, a plurality of laminations in contiguous relation disposed between the first and second body members, perforate pattern regions in the laminations establishing communication of the fuel cavity with the main orifice means, perforate pattern regions in certain of said laminations providing passages for conveying fuel to said supplemental orifice means, air bypass means in the first body member, and perforate pattern regions in certain of the laminations arranged to convey air from the air bypass means for mixing with fuel providing a fuel and air emulsion for delivery to the main orifice means and to the supplemental orifice means.
Charge forming apparatus, in combination, a body construction comprising a first body member and a second body member, a fuel and air mixing passage provided in the first body member, a fuel cavity in the second body member, main orifice means in the first body member opening into the mixing passage, supplemental orifice means in the first body member opening into the mixing passage, float-controlled valve means associated with the second body member for regulating fuel flow into the fuel cavity, fluid flow control laminar means disposed between said body members, said laminar means comprising plural plate members in contiguous relation, certain of said plural plate members having perforations providing fluid flow passages, the plate member contiguous with the second body member having a perforation in communication with the fuel cavity for conveying fuel to perforations in other plate members for delivery to said main orifice means and said supplemental orifice means in the first body member.
Charge forming apparatus, in combination, a body construction comprising a first body member and a second body member, a fuel and air mixing passage provided in the first body member, a throttle valve in said mixing passage, a fuel cavity in the second body member, main orifice means in the first body member opening into the mixing passage, supplemental orifice means in the first body member opening into the mixing passage, a cover member for the second body member, a relatively movable inlet valve mounted by the cover member, float means in the fuel cavity having operative engagement with the inlet valve for controlling fuel flow into the fuel cavity, a plurality of laminations arranged in stacked relation between the first and second body members, one of said laminations being of greater thickness than the other laminations, said other laminations having perforations providing flow passages for conveying fuel and air mixture for delivery through the main orifice means and the supplemental orifice means, passages in the said lamination of increased thickness accommodating flow of fuel, a first adjustable valve means mounted by the lamination of increased thickness for regulating fuel flow to the main orifice means, and second adjustable valve means mounted by the lamination of increased thickness for regulating flow of fuel to the supplemental orifice means, and means securing the first and second body members and the plurality of laminations in assembled relation.
Dependencies are inferred from the claim text.