The innovation is new engine technology for automotive, aircraft and industrial use, and is designed to provide significant “GREEN” technical and financial benefits:
• Ultra-low exhaust emissions; significantly improved fuel economy;
• Low friction; no prime rubbing components, no lubrication required, no wear, ultra-long life;
• Higher efficiencies - mechanical, volumetric & thermal;
• Lighter and more compact engines.
The technology uses “air-sealing” to replace piston/rotor sealing rings… on engines where the pistons/rotors are physically located so as not to contact their mating cylinder/housing surfaces.
There are two phases of the technology:
• Scotch-Yoke piston engines, and
• Oscillating and (True) Rotary twin-wedge engines.
The answer to the first Devil’s-Advocate question is: “Of course you are right… it will not completely seal the gases, but it does not have to! The advantages far outweigh the perceived disadvantages!”
Other significant features of the technology are:
• provides a stratified-charge air-fuel mixture for combustion,
• provides an “after-burn” of exhaust gases,
• requires a less-powerful (air-powered) starter motor,
• continually cleans spark-plugs and fuel injectors,
• inherently super-charges the induction air,
• provides quieter and smoother engine operation, and
• reduces the manufacturing and servicing cost of engines.
The compressed air, which is stored and continually replenished, performs the following functions:
• Seals (the induction air and combustion gases)
• Cools (mating surfaces)
• Cushions the combustion
• Powers the small/compact starter-motor
In lieu of mechanical piston rings or seals, the technology uses a labyrinth of grooves. The labyrinth consists of a number of grooves, which are angled toward the combustion chambers they are designed to seal. The profile and size of the grooves, and the number of grooves, are designed so as to most efficiently generate extremely high-speed eddy currents of the air, so as to provide effective sealing.
The technology is ideally suited to engines operating on gaseous fuels… natural gas and LPG. In this case, there is no liquid fuel to wash lubricant from the bores, hence minimal-lubricated supplemental mechanical seals can be used, if desired, for increased sealing efficiency.
Explanation of the Major Advantages of the Air-Sealing Technology:
• Hydrocarbons & Carbon Monoxide: Lean air:fuel ratio; stratified-charge; efficient after-burn;
• Oxides of Nitrogen: Stratified-charge – the air:fuel mixture around the spark-plugs is rich (so that there is no excess air to form NOx) and the air:fuel mixture around the periphery of the combustion chamber is lean (so that the peak combustion temperatures are low).
• Mechanical: Significantly lower friction… no piston/rotor - bore/housing metal-to-metal contact
• Volumetric: Lower pumping losses; the compressed air used for sealing provides a super-charging effect;
• Thermal: No fuel trapped and unburnt; lower heat losses.
High Fuel Economy: Higher efficiencies; lower friction; more-efficient combustion.
Advantages – Compared to Conventional Engines of Comparable Power
Anticipated % Improvement
Lighter and more compact 5
Smoother running 5
Longer life 20
Lower friction 5
Higher mechanical efficiency 10
Higher volumetric efficiency 10
Higher thermal efficiency 5
Higher fuel economy
ABOUT THE ENTRANT
Type of entry:individual
Number of times previously entering contest:1
Colin is inspired by:This WLSR project - for wheel-driven cars - is a collaborative effort for everyone - especially universities around the world - involved with new automotive technology, to participate at a relatively low cost. The prime objective is to demonstrate new engines, transmissions and safety innovations to reduce fuel consumption and harmful exhaust emissions, while improving safety. We are co-ordinating the project... liaising in strict confidence with potential participants.