Hydrogen pyrolysis fuel injection

A hydrogen enrichment fuel injection system for burning ultralean fuel-air mixtures in gasoline type engines comprising,

• variable metering and high pressure pumping means for pumping discrete metered quantities of liquid fuel in consecutive pulses with these metered quantities being controllable to coincide with variable engine power demands, the greater the demand the more the fuel metered, and
• timing means whereby the consecutive pulses arrive at cylinders of the engine one after another, first at one cylinder then at another and so on in an order which is determined by engine firing order and at such a time duration in each cylinder that each cylinder receiving fuel in its proper sequence is at a period in its compression cycle when it begins to receive the pulse of fuel and has completed receiving the fuel pulse in a period before the completion of that same compression cycle and,
• pressure valving control means whereby fuel injection begins only when injection pressure is high enough to assure a positive pressure surge into the cylinder against air being compressed in each cylinder and,
• controlled hydrogen removal injector means comprising an injector housing containing a pyrolysis means comprising a chamber wherein each discrete fuel quantity is heated separately and by this heating effecting a partial pyrolysis of the liquid fuel thereby separating a quantity of hydrogen gas from the fuel and a cooling means for cooling a resulting mixture of the hydrogen gas and remaining fuel below ignition temperature by ducting said mixture through a cooler, wherein said mixture is injected into each cylinder while still under the pressure exerted by the fuel pumping means and,
• a fuel-air ignition means.