Pressure carburetion system for manifold distribution

Claim 2

In an internal combustion engine having an intake manifold adapted to distribute fuel-air mixture to engine cylinders, a fuel-air induction system comprising: air induction means having an air outlet; fuel delivery means having a fuel discharge outlet; a mixing chamber having an inlet end disposed downstream and adjacent said induction and said delivery means outlets and an outlet discharging directly into said intake manifold, said mixing chamber having means downstream of said fuel discharge outlet constructed and arranged to direct air from said induction means air outlet tangentially and inwardly to whirl and thereby substantially uniformly mix the air and fuel simultaneously entering the inlet end, thereby to assist atomization of the fuel prior to discharge of the air and fuel into said intake manifold from which the mixture is distributed, said air inductIon means comprising a pair of substantially parallel linear air ducts, each of said ducts having a throttle valve disposed therein, and said fuel delivery means includes a fuel nozzle disposed between said air ducts and arranged to discharge a metered quantity of fuel in only substantially the same general direction as the air discharging from said air ducts, and said mixing chamber including an open linear passage having a downstream end opening directly to said intake manifold and an upstream end disposed in line with the path of the discharged fuel from said fuel nozzle, said mixing chamber having a pair of channels respectively having upstream ends disposed in line with the path of the inducted air from said air ducts, said channels encircling and open to said linear passage for whirling the inducted air around said linear passage.

Claim 3

In an internal combustion engine having an intake manifold adapted to distribute fuel-air mixture to engine cylinders, a fuel-air induction system comprising: air induction means having an air outlet; fuel delivery means having a fuel discharge outlet; a mixing chamber having an inlet end disposed downstream and adjacent said induction and said delivery means outlets and an outlet discharging directly into said intake manifold, said mixing chamber having means downstream of said fuel discharge outlet constructed and arranged to direct air from said induction means air outlet tangentially and inwardly to whirl and thereby substantially uniformly mix the air and fuel simultaneously entering the inlet end, thereby to assist atomization of the fuel prior to discharge of the air and fuel into said intake manifold from which the mixture is distributed, means comprising an actuated element for metering fuel to said fuel delivery means; and an idle stop mechanism responsive to engine manifold pressure and having an automatically adjustable element associated with said fuel-metering means and engageable with said actuated element only when said element moves toward a position reducing fuel delivery for varying the engine idle setting of said metering means.

Claim 4

In an internal combustion engine having an intake manifold adapted to distribute fuel-air mixture to engine cylinders, a fuel-air induction system comprising: air induction means having an air outlet; fuel delivery means having a fuel discharge outlet; a mixing chamber having an inlet end disposed downstream and adjacent said induction and said delivery means outlets and an outlet discharging directly into said intake manifold, said mixing chamber having means downstream of said fuel discharge outlet constructed and arranged to direct air from said induction means air outlet tangentially and inwardly to whirl and thereby substantially uniformly mix the air and fuel simultaneously entering the inlet end, thereby to assist atomization of the fuel prior to discharge of the air and fuel into said intake manifold from which the mixture is distributed, means comprising an actuated element for metering fuel to said fuel delivery means; and an idle stop mechanism responsive to engine manifold pressure and having an automatically adjustable element associated with said fuel-metering means and engageable with said actuated element only when said element moves toward a position reducing fuel delivery for varying the engine idle setting of said metering means.

Claim 5

In an internal combustion engine having an intake manifold and a housing having air induction means and a fuel metering and distribution means including an actuated element, an idle stop mechanism comprising; a manifold pressure-actuated element; an idle stop lever having a first point pivotally supported by said housing and a second point pivotally secured to said manifold pressure actuated element for rotating said lever about said first point, a portion of said lever intermediate said first and second points engageable with said fuel metering means actuated element only when same moves toward a position reducing fuel delivery for varying the idle setting of said fuel-metering means.

Claim 6

In an internal combustion engine having an intake manifold and a housing having air induction means and a fuel metering and distribution means including an actuated element, an idle stop mechanism comprising; a manifold pressure-actuated element; an idle stop lever having a first point pivotally supported by said housing and a second point pivotally secured to said manifold pressure actuated element for rotating said lever about said first point, a portion of said lever intermediate said first and second points engageable with said fuel metering means actuated element only when same moves toward a position reducing fuel delivery for varying the idle setting of said fuel-metering means.

Claim 7

In an internal combustion engine having an intake manifold adapted to distribute fuel-air mixture to engine cylinders, a fuel-air induction system comprising: air induction means having an air outlet; fuel delivery means having a fuel discharge outlet; a mixing chamber having an inlet end disposed downstream and adjacent said induction and said delivery means outlets and an outlet discharging directly into said intake manifold, said mixing chamber having means downstream of said fuel discharge outlet constructed and arranged to direct air from said induction means air outlet tangentially and inwardly to whirl and thereby substantially uniformly mix the air and fuel simultaneously entering the inlet end, thereby to assist atomization of the fuel prior to discharge of the air and fuel into said intake manifold from which the mixture is distributed, said mixing chamber having a centrally located linear passage and at least one surrounding helical passage open throughout its length to said linear passage, said fuel delivery means including a nozzle injecting fuel into the upstream end of said linear passage and being in line therewith, said air induction means including an air duct directing air into the upstream end of said helical passage and in line therewith, and said passages opening at their downstream ends directly into said intake manifold.

Claim 8

In an internal combustion engine having an intake manifold adapted to distribute fuel-air mixture to engine cylinders, a fuel-air induction system comprising: air induction means having an air outlet; fuel delivery means having a fuel discharge outlet; a mixing chamber having an inlet end disposed downstream and adjacent said induction and said delivery means outlets and an outlet discharging directly into said intake manifold, said mixing chamber having means downstream of said fuel discharge outlet constructed and arranged to direct air from said induction means air outlet tangentially and inwardly to whirl and thereby substantially uniformly mix the air and fuel simultaneously entering the inlet end, thereby to assist atomization of the fuel prior to discharge of the air and fuel into said intake manifold from which the mixture is distributed, said mixing chamber having a centrally located linear passage and at least one surrounding helical passage open throughout its length to said linear passage, said fuel delivery means including a nozzle injecting fuel into the upstream end of said linear passage and being in line therewith, said air induction means including an air duct directing air into the upstream end of said helical passage and in line therewith, and said passages opening at their downstream ends directly into said intake manifold.

Claim 9

In an internal combustion engine having an intake manifold adapted to distribute fuel-air mixture to the engine cylinders, a fuel-air induction system comprising: air induction means; fuel delivery means; a mixing chamber disposed downstream of said induction means and said delivery means, said chamber including a centrally located outlet port communicating with said intake manifold and a pair of channels encircling a portion of said outlet port for whirling the air and fuel prior to the induction of same into said intake manifold and thereby substantially uniformly mix the air and fuel and assist atomization of the fuel, prior to the induction of said mixture into said intake manifold from which said mixture is distributed; said air induction means comprising a pair of substantially parallel inlets, each of said inlets including a throttle valve disposed therein, said fuel delivery means including a fuel nozzle disposed between said air inlets and arranged to direct a metered quantity of fuel substantially parallel with the incoming air from said air inlets; said mixing chamber outlet port being disposed in the path of the discharged fuel from said fuel nozzle, the pair of channels of said chamber each having its beginning disposed in the path of the inducted air from one of said air inlets; and said fuel delivery means including a fuel nozzle assembly comprising a tubular body having a fuel inlet and outlet, a fuel-atomizing tip surrounding the portion of said tubular body containing said fuel outlet for receiving fuel therefrom, said tip having a fuel outlet port and a plurality of inwardly extending flanges for imparting a whirling motion to the fuel before directing it through said fuel outlet port, and a tubular shell surrounding the tip and a portion of said tubular body for forming a space therebetween for the passage of gases, said shell having a discharge port spaced from said fuel outlet port and a plurality of inwardly extending flanges for imparting a whirling motion to the gases before the gases contact the fuel from the said outlet port.

Claim 10

In an internal combustion engine having an intake manifold adapted to distribute fuel-air mixture to the engine cylinders, a fuel-air induction system comprising: air induction means; fuel delivery means; a mixing chamber disposed downstream of said induction means and said delivery means, said chamber including a centrally located outlet port communicating with said intake manifold and a pair of channels encircling a portion of said outlet port for whirling the air and fuel prior to the induction of same into said intake manifold and thereby substantially uniformly mix the air and fuel and assist atomization of the fuel, prior to the induction of said mixture into said intake manifold from which said mixture is distributed; said air induction means comprising a pair of substantially parallel inlets, each of said inlets including a throttle valve disposed therein, said fuel delivery means including a fuel nozzle disposed between said air inlets and arranged to direct a metered quantity of fuel substantially parallel with the incoming air from said air inlets; said mixing chamber outlet port being disposed in the path of the discharged fuel from said fuel nozzle, the pair of channels of said chamber each having its beginning disposed in the path of the inducted air from one of said air inlets; and said fuel delivery means including a fuel nozzle assembly comprising a tubular body having a fuel inlet and outlet, a fuel-atomizing tip surrounding the portion of said tubular body containing said fuel outlet for receiving fuel therefrom, said tip having a fuel outlet port and a plurality of inwardly extending flanges for imparting a whirling motion to the fuel before directing it through said fuel outlet port, and a tubular shell surrounding the tip and a portion of said tubular body for forming a space therebetween for the passage of gases, said shell having a discharge port spaced from said fuel outlet port and a plurality of inwardly extending flanges for imparting a whirling motion to the gases before the gases contact the fuel from the said outlet port.