An electronic carburetor injection system is provided for an internal combustion engine. The electronic carburetor injection system is a standalone, user programmable fuel injection system that delivers additional fuel to the engine whenever a lean fuel/air mixture is delivered by a carburetor. The electronic carburetor injection system includes a fuel injector that delivers liquid fuel in the form of a spray discharge. A plate supports the fuel injector between the carburetor and an intake manifold of the engine. The plate includes an injector port that allows the spray discharge to enter the intake manifold without interfering with operating the carburetor. An engine control unit operates the fuel injector according to signals received from an oxygen sensor that is disposed within an exhaust system of the engine. During operation, the electronic carburetor injection system maintains the fuel/air mixture within a proper range across multiple driving conditions and changing environmental conditions.

An engine system includes an engine, a carburetor induction system, and a controller. The carburetor induction system is fluidly coupled to the engine to provide an air-fuel mixture thereto. The carburetor induction system includes a pump configured to provide a leaner air-fuel mixture to the engine. The controller is configured to adjust operation of the pump.

An engine system includes an engine, a carburetor induction system, and a controller. The carburetor induction system is fluidly coupled to the engine to provide an air-fuel mixture thereto. The carburetor induction system includes a pump configured to provide a leaner air-fuel mixture to the engine. The controller is configured to adjust operation of the pump.

Systems and methods are provided for electric in-tank fuel pumps with configurability for supporting different fuel pressures. An example welding-type system may include an engine that uses liquid fuel to generate mechanical power, a generator configured to convert mechanical power from the engine to electric power for use in driving one or more components of the welding-type system, and a fuel delivery component that supplies the liquid fuel to the engine from a fuel tank. The fuel delivery component may include a fuel pump. The fuel pump may be disposed within the fuel tank. The fuel pump may be configurable to supply the fuel at a plurality of pressure levels that may include, at least, a first pressure level and a second pressure level that is different from the second pressure level.

Systems and methods are provided for electric in-tank fuel pumps with configurability for supporting different fuel pressures. An example welding-type system may include an engine that uses liquid fuel to generate mechanical power, a generator configured to convert mechanical power from the engine to electric power for use in driving one or more components of the welding-type system, and a fuel delivery component that supplies the liquid fuel to the engine from a fuel tank. The fuel delivery component may include a fuel pump. The fuel pump may be disposed within the fuel tank. The fuel pump may be configurable to supply the fuel at a plurality of pressure levels that may include, at least, a first pressure level and a second pressure level that is different from the second pressure level.