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US 4,285,308 AGranted
Cold start fuel enrichment system
AssigneeBrunswick Corporation
InventorsJames M. Hundertmark, James L. Wagner
Life of this patent
Estimating the term…
Abstract
A cold start fuel enrichment system for an internal combustion engine uses fuel from the upper carburetor for enriching the air-fuel mixture in the lower carburetors by gravity feed. A fuel line runs from the upper carburetor float bowl to the throttle bores of the lower carburetor. A solenoid valve in the fuel line controls its operation.
Claims10
A cold start fuel enrichment system for a multi-cylinder internal combustion engine comprising:
- A. a plurality of independently operable engine air induction passages each for a different cylinder, each induction passage at a different height on said engine, and each of said induction passages including a carburetor;
- B. a fuel passageway connecting the float bowl of the highest of said carburetors to a lower one of said induction passages at a point below said highest float bowl;
- and
- C. a valve means for controlling the flow of fuel through said fuel passageway,
- whereby fuel can be directed to flow by gravity into said lower induction passage from said highest float bowl to provide fuel to the lower cylinders of said engine for starting said engine.
2 more elements
A cold start fuel enrichment system for a multi-cylinder internal combustion engine comprising:
- A. a plurality of carburetors mounted at different heights on an induction manifold of said engine, each of said carburetors supplying air fuel mixture to different cylinders of said engine by way of induction passages through said manifold and said carburetors, and
- B. a fuel passageway between the float bowl of the highest of said carburetors and a first lower induction passage;
- whereby the float bowl of said highest carburetor may be drained by gravity to supply primer fuel to said first lower induction passage prior to and for starting said engine.
Dependencies are inferred from the claim text.