Patent ID: 8020542

Claim:
A nitrous oxide injection system configured for an internal combustion engine, comprising: a) a source of pressurized nitrous oxide; b) a nitrous oxide flow line, configured to be in fluid communication with the source of pressurized nitrous oxide; c) an injection nozzle, configured to be in fluid communication with the nitrous oxide flow line and configured to be operatively coupled to an engine intake; d) a control valve configured to be fluidly coupled to the nitrous oxide flow line for allowing a flow of pressurized nitrous oxide to the injection nozzle; e) a supplemental fuel line, configured to be in fluid communication with a source of fuel and the engine intake, for providing a secondary source of fuel with respect to a primary fuel line; f) a supplemental fuel valve, fluidly coupled to the supplemental fuel line and operably coupled to the nitrous oxide flow line, the supplemental fuel valve being responsive to a flow of pressurized nitrous oxide through the nitrous oxide flow line to allow a secondary flow of fuel to the engine intake; g) the injection nozzle being configured to simultaneously combine and deliver the flow of pressurized nitrous oxide and the secondary flow of fuel into the engine intake; and h) the supplemental fuel valve including a ported spool piston for generating a venturi jet to draw the secondary flow of fuel from the supplemental fuel line in response to the flow of pressurized nitrous oxide into the nozzle.