Combination carburetor and fuel injection system

A combination system comprising:

• a spacer plate, which comprises:
• a plurality of side walls each having a thickness between an outer side and an inner side, wherein the inner sides define a central aperture, a flat top surface extends from the inner side to the outer side, and a flat bottom surface extends from the inner side to the outer side and opposes the top surface,
• a first fuel inlet port located through an entirety of the thickness of a first of the plurality of side walls from the outer side to the inner side, having a first fuel inlet port centerline extending vertically from the top surface to the bottom surface, wherein the first fuel inlet port is adapted to receive a nozzle of a first fuel injector component,
• a first fuel injector mount located on the outer side of the first of the plurality of side walls comprising:
• a first mount opening on the outer side of the first of the plurality of side walls on a first side of the first fuel inlet port centerline, and
• a second mount opening on the outer side of the first of the plurality of side walls on a second side of the first fuel inlet port centerline;
• at least one carburetor mount connected to the plurality of side walls and adapted to secure the central aperture to the carburetor,
• wherein the bottom surface is detachably secured to a manifold and only the bottom surface is positioned adjacent to the manifold;
• a carburetor detachably secured directly to the carburetor mount of the spacer plate, adjacent only the top surface of the spacer plate, and in fluid communication with the central aperture;
• the first fuel injector secured to the first fuel inlet port of the spacer plate and in fluid communication with the central aperture;
• an EFI sensor positioned to measure a value indicative of an actual air fuel ratio in the central aperture of the spacer plate and output an air fuel ratio signal;
• and
• a computer in electrical communication with the first fuel injector, adapted to receive the air fuel ratio signal, and adapted to provide a control signal to the fuel injector to control the amount of fuel provided to the central aperture of the spacer plate by the first fuel injector to achieve a target air fuel ratio.

A combination system comprising:

• a spacer plate, which comprises:
• a plurality of side walls each having a thickness between an outer side and an inner side, wherein the inner sides define a central aperture, a flat top surface extends from the inner side to the outer side, and a flat bottom surface extends from the inner side to the outer side and opposes the top surface,
• a fuel inlet port located through an entirety of the thickness of a first of the plurality of side walls from the outer side to the inner side, having a centerline extending vertically from the top surface to the bottom surface, wherein the fuel inlet port is adapted to receive a nozzle of a fuel injector component,
• a fuel injector mount located on the outer side of the first of the plurality of side walls comprising:
• a first mount opening on the outer side of the first of the plurality of side walls on a first side of the centerline, and
• a second mount opening on the outer side of the first of the plurality of side walls on a second side of the centerline;
• a carburetor positioned adjacent only the top surface of the spacer plate and detachably secured thereto;
• a fuel injector secured to the fuel injector port of the spacer plate;
• and
• a manifold positioned adjacent only the bottom surface of the spacer plate and detachably secured thereto;
• wherein the carburetor is adapted to deliver an amount of fuel to the manifold through the central aperture of the spacer plate and the fuel injector is adapted to deliver a supplemental amount of fuel to the manifold through the central aperture of the spacer plate.