Patent ID: 9638126
Date: 2017-05-02
CPC Classifications: F02D

Claim:
1. A device for the electronically controlled lean out of mechanical fuel injected engines comprising in combination: a fuel tank or cell; a fuel pump; a shut off lever; a barrel valve connected to the shut-off lever; a variable valve spool contained within a fuel block for regulating fuel flow connected to the shut-off lever; the barrel valve and variable valve spool connected from a “T” fitting or junction; the “T” fitting or junction directs fuel flow to either the barrel valve and toward the engine, or toward the variable valve spool contained within a fuel block for regulating fuel flow; fuel directed to the barrel valve is sent to the engine at wide open throttle and is delivered to the engine through one or more injectors; a main jet provides coarse adjustment for the excess fuel returned to the fuel tank and not used by the injectors; fuel directed to variable valve spool contained within a fuel block for regulating fuel flow returns to the fuel cell through a 1 lb check valve; and the regulated and adjusted fuel is then returned to the fuel tank; and wherein the variable valve spool contained within a fuel block for regulating fuel flow is further comprised of: a first fuel block body side is comprised of shaft hole with a lip seal and machined o-ringed grove on the interior surface for retaining an O-ring to seal the two body sections/sides and when bolted together; and a second fuel block body side is comprised of and interior surface comprising an inlet fuel port and outlet fuel port, connected by a cylindrical opening where a cylindrical shaped variable valve spool is retained that allows for the regulation of a fuel flow.