Apparatus for the preparation of fuel mixtures for carburetors

Details Apparatus for the preparation of fuel mixtures for carburetors Apparatus for the preparation of fuel mixtures for carburetors

1977-10-17

1979-10-02

Lazarus, Ronald H.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123124A, 123119D, 123119B, 261 63, F02M 2304

Patent

active

041694716

ABSTRACT:
A modification to or ancillary apparatus for carburetors for internal combustion engines to prepare liquid fuel for internal combustion engines by supplying supplementary air such as air or exhaust gas into the induction system downstream of the butterfly valve of the carburetor having at least one slit for discharging into the induction system supplementary air dependent upon a control member and its relation to the butterfly valve position. In one embodiment air enters through one slit at all times during engine operation to primarily improve idling mixture while air is supplied to the second slit in quantities dependent upon the butterfly valve position. In a second embodiment the air is supplied by way of one or more slits in quantities determined by the butterfly valve setting but without the continuous air supply independent of that butterfly valve position for idling mixture. In either embodiment the air enters the slits at very high speed and that speed approaches the speed of sound when the engine is idling for the one slit in the first embodiment and in part-load ranges of the engine for the other slits in either embodiment.

REFERENCES:
patent: 3561409 (1971-02-01), August et al.
patent: 3872845 (1975-03-01), Schultz

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