• Twice the power, half the weight, half the cost of equal displacement piston engines.


  • No high friction points such as piston to cylinder wall contact means less energy wasted during combustion
  • No sliding bearings - roller bearings throughout engine reduce stress, friction and wear
  • Reduced friction, tremendous torque and no valve restrictions means engine can idle below 50 RPM
  • Reliable as no need for bearings to ride on a film of oil like crank and rod bearings of piston engines
  • No catastrophic failure due to oil pressure loss as roller bearings will keep rolling until engine is stopped







  • Less moving parts means less chance of part failure
  • Low part count, no pistons, no crankshaft, no connecting rods and no valve-train
  • Debris getting past a damaged air filter will easily be swept out without causing damage
  • Two times more fuel efficient than a piston engine of equal power
  • Easier and cheaper to manufacture, maintain and rebuild than piston engines
  • Multiple spark ignition, greater dwell time and HCCI capable results in a more complete combustion
  • Maximum torque at ALL RPM means an overdrive gear is the only requirement without a transmission
  • Engine can be mounted in any position with minor modifications
  • Uses a fraction of the oil of a comparable piston engine
  • Fewer oil changes as the oil is not subjected to the same harsh conditions as in piston engines
  • All components are easily accessed for servicing and wear items such as roller bearings are replaceable
  • Tune ups are simple as the spark plugs are located right on top of the engine block without any restrictions


  • Combustion gases expand fully inside the engine block and not inside the exhaust port reducing noise
  • Eight power impulses per one revolution translates into a smoother running engine without vibrations


  • True rotary motion eliminates “stopping” during combustion unlike reciprocating piston engines which allow time for valuable heat energy to escape through the chamber walls reducing efficiency, promoting incomplete combustion and raising emissions
  • Heat from combustion is contained inside the combustion chamber for a longer period of time to break down more of the fuel to be converted into mechanical work to turn the output shaft
  • The rate of chamber volume increase is reduced during combustion reducing heat and pressure loss
  • Intake chamber is separate from combustion chamber allowing for a hotter combustion chamber
  • No valves means no restrictions in air flow so the intake chamber is always filled to its optimum volume
  • No valve timing to open and close at certain RPM therefore maximum torque is provided at any RPM
  • Gasoline and Natural Gas Fuel Efficiency: Over 50%,     Diesel Fuel Efficiency: Over 60%


  • Can easily burn conventional fuels such as gasoline, diesel, propane and natural gas as well as alternative fuels such as hydrogen, bio-diesel, alcohol fuels and synthetic fuels from processing organic waste through gasification
  • Separate intake and combustion chambers prevent pre-ignition and back-firing from highly volatile fuels such as hydrogen
  • Direct injection capable (HCCI) for increased performance and efficiency
  • Easily converted from gasoline to diesel or other fuels
  • Can run as internal and/or external combustion engine for compressed air or steam pressure
  • Can easily alternate on the go from internal combustion to external pressure from an outside source


  • Automotive: Cars, Trucks, Vans, SUVs, Motorcycles
  • Marine: Powerboats, Pleasure Boats, Super Yachts, Cruise Ships, Ocean Freighters
  • Aerospace: Propeller Driven Aircraft, Helicopters
  • Military: All Terrain Trucks, Tanks, Utility Vehicles, Amphibious Vehicles, UAVs, Combat Boats
  • Locomotive: Freight and Passenger Trains
  • Recreation: Snowmobiles, Jet Skis, All Terrain Vehicles, Go Carts
  • Utility: Chain Saws, Lawn Mowers, Weed Trimmers, Construction & Farm Equipment, Portable & Stationary Power Generation

© 2009 Vengeance Power Inc.