Bourke 30 Specifications

As claimed by Russell Bourke, Inventor

• Normally aspirated, carburetor or fuel injected
• Highly efficient exhaust scavenging
• High pressure pre-charge from underneath piston to combustion chamber during transfer cycle
• True linear movement
• Free piston engine
• No angularity of moving parts.
• No piston side loading
• Cylinders sealed off from crankcase
• Horizontally opposed twin cylinder, common plane
• Mono stroke, i.e. two directly opposed 2 stroke cylinders connected through one common/linear rod/yoke assembly

• Two 135 degree power pulses per revolution
• Valving: ported
• Balanced precision reverse cam effect roller crankshaft
• High horsepower to weight ratio
• 30 cubic inch 2 cylinder Bourke cycle engine
• Constant RPM stationary power plant
• Potential adiabatic operation at specific RPM range
• Test fuel: low octane gasoline, coleman and 1-K
• Weight: +/- 38 pounds.
• Aluminum crankcase, cylinder castings and pistons.
• Steel cylinder liners, connecting rods, yoke plates, camshaft, wrist pins, bearings
• 35 hp or more at 5,000 RPM
• Estimated up to 5 HP per cubic inch
• Fuel consumption: 1/4 pound or less of fuel per horsepower hour
• Carburetor or fuel injection
• High RPM ignition system
• Multi fuel capable, i.e. natural gas, propane, low octane fuels
• Tested fuels: gasoline, bio diesel, fuel oils, white gas, 1-K
• Other fuel tpes not yet tested
• Exhaust gas temperature: 190° to 240° F!
• Exhaust gas components resulting from regular no lead gasoline: carbon dioxide and water vapor
• Emission: much lower than normal PPM HC burning regular no-lead fuel
• Compression ratio: 8:1 to 20:1
• Fuel air ratio: 30:1 to 50:1
• Exhaust system: lightweight baffled aluminum housings
• Liquid or air cooled
• Lubrication system: internal splash/vacuum type oiling
• Ignition system: electronic capacitive discharge
• Self sustaining pressure ignition for diesel applications