Emission control device for carburetor-equipped internal-combustion engines

Claim 3

The device according to claim 1, wherein said body is provided with a plurality of induction passages, said induction passages being equal in number, and in communication with, multiple induction channels in said carburetor.

Claim 4

The device according to claim 1, wherein saiD actuator means including a positioner sensitive to pressure differential between atmosphere and induction manifold.

Claim 5

The device according to claim 3, wherein said vane means cooperates with said actuator means in positioning said tab means in response to velocity of gases in said induction passage.

Claim 6

The device according to claim 3, wherein said positioner comprises: a hollow chamber; a flexible diaphram partitioning said chamber into first and second spaces; channel means interconnecting said first space with said induction passage; orifice means interconnecting said second space with atmosphere; shaft means, rotatably located in said body, for eccentrically pivoting said vane means; crank means attached to said shaft means; and a link, issuing through said orifice means, interconnecting said diaphram with said crank means, thereby altering angular position of said vane means in response to changes in pressure difference between gases flowing in said induction passage and atmosphere.

Claim 7

The device defined in claim 2, for use with engines equipped with twin-barrel carburetors, wherein said induction passages number two.

Claim 8

The device according to claim 1, wherein said first nozzle means including at least one tubular channel intruding into each of said induction passages, and said second nozzle means including at least one tubular channel intruding into each of said induction passages.

Claim 9

The device according to claim 1, further comprising: third nozzle means communicating with said induction passages; third conduit means, interconnecting said third nozzle means with atmosphere; and governing means, sensitive to differential in pressure between atmosphere and gases flowing through said induction passages, for controlling the flow of additional diluting air into said induction passages.

Claim 10

As an article of commerce, a device for interposition between a carburetor and the intake manifold of an internal combustion engine, said device incorporating means for the reduction of harmful emissions from the exhaust manifold of the engine, comprising; a substantially rectangular body; at least one induction passage through said body, or said passage, or passages, corresponding in number, shape and size to the exit orifice, or orifices, of said carburetor; an eccentrically pivoted vane in each of said induction passages; first nozzle means communicating with each of said induction passages; second nozzle means communicating with each of said induction passages; first conduit means, for conveying exhaust gases from the exhaust manifold to said first nozzle means; second conduit means, for conveying atmospheric air to said second nozzle means; first and second tab means, rigidly attached to each of said vanes, for variably obstructing discharge orifices of said first and second nozzle means, respectively; and actuator means, responsive to flow parameters or conditions of gases flowing from said carburetor into said intake manifold through said induction passages, for angularly positioning said vanes with attached tab means, whereby said first and second tab means govern flow of recirculating exhaust gas and dilution air; through said first and said second nozzle means, respectively; into said induction passages.

Claim 11

As an article of commerce, a device for interposition between a carburetor and the intake manifold of an internal combustion engine, said device incorporating means for the reduction of harmful emissions from the exhaust manifold of the engine, comprising; a substantially rectangular body; at least one induction passage through said body, or said passage, or passages, corresponding in number, shape and size to the exit orifice, or orifices, of said carburetor; an eccentrically pivoted vane in each of said induction passages; first nozzle means communicating with each of said induction passages; second nozzle means communicating with each of said induction passages; first conduit means, for conveying exhaust gases from the exhaust manifold to said first nozzle means; second conduit means, for conveying atmospheric air to said second nozzle means; first and second tab means, rigidly attached to each of said vanes, for variably obstructing discharge orifices of said first and second nozzle means, respectively; and actuator means, responsive to flow parameters or conditions of gases flowing from said carburetor into said intake manifold through said induction passages, for angularly positioning said vanes with attached tab means, whereby said first and second tab means govern flow of recirculating exhaust gas and dilution air; through said first and said second nozzle means, respectively; into said induction passages.