Benefits of the Grail Engine:

  • Engine produces power every revolution per-cylinder as desired.
  • Less pumping losses allows greater air flow through cycles
  • On-the-fly variable compression ratios at full range of RPM's
  • Independently configure each cylinder according to vehicle load.
  • On-the-fly multiple fuel sources
    • i.e. fossil fuels, hydrogen etc...
  • Built in Super Charger for pre-compressing intake charge
  • Built in inter-cooler for cooling intake air-to-combustion chamber
  • Potential for forward & reverse operation
  • Lower parts count attributing to lower manufacturing costs
    • This will allow for reduced costs per unit
  • Virtually no industry retooling required
  • Liter for liter outclasses all four stroke engines
    • In power to weight ratio and thermal efficiency
  • Redefines the standard of efficiency for Internal Combustion Engines
  • The engine can achieve the Miller Cycle and HCCI simultaneously.
    • Thus making the Grail Engine a true hybrid.
  • One Liter Engine Projections based upon vehicle weight and engine demand:
    • 100+ MPG’s
    • 180 ft lbs Torque
    • 200 Horse Power
Technical Information

Our technological advances have produced two new ground breaking concepts known as Forced Semi-Homogeneous Charged Compression Ignition (FS-HCCI) and "The Grail Cycle," which is a combination of one type of ignition or homogeneous charged compression ignition while simultaneously operating in the Miller Cycle. No other piston engine in the market place can produce this distinctive trait at this time. The Grail Engine has the potential to be the first two stroke engine that does not exhibit cross contamination of fuel and oil. This results in lower emissions yet produces more power and torque using less fuel than larger engines.

 

Note: Cross-contamination in a modern day direct injected two-stroke engine, occurs when the piston and rings move across the intake and exhaust ports of the cylinder wall. The oil that lubricates the piston, cylinder wall, and rings enters the combustion chamber exhaust and intake. Furthermore, the lack of lubrication to the cylinder walls to maintain emissions as well as the evacuation of the cylinder for clean combustion results in premature wear and/or high particle emissions. The Grail Engine does not suffer from these issues. Our technology will exceed federal auto emissions.

Grail Engine Two-Stroke Engine Functional Operation

The Grail Engine Two Stroke engine consists of: grail engine

 

Compression takes place within the reed valve air box, pre-compression chamber, vent-to-piston ports, piston-intake-ports & crankcase. As the piston travels upward creating a vacuum beneath the piston, fresh air enters via the intake air box through the one-way reed valve, and fills the external pre-compression chamber, vent-to-piston ports and piston-intake-ports with fresh air.


Compression occurs within the cylinder as the piston travels upward. At Top Dead Center (TDC), direct ignition then single or multiple ignitions occur. This forces the piston down into the cylinder compressing air in the engine crankcase, external pre-compression chamber, vent-to-piston ports and piston intake-ports. Just prior to Bottom Dead Center (BDC), the exhaust valve opens via a standard cam/push rod mechanism or electro-mechanical valve control. Exhaust gases exit via the exhaust valve opening at the top of the cylinder. Compressed fresh air enters the cylinder via piston valve, which forces out the final exhaust. As the piston travels past BDC the exhaust valve and piston valve close and cycle repeats.

 
Note: Adjusting the pressure within the external pre-compression chamber via servo motor or equivalent allows you to control engine volumetic efficiency at multiple RPM's

Grail Engine Animations

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Grail Engine Gallery

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Additional links to help you understand the Grail Engine

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Two-Stroke Engine Study
How Two-Stroke Works
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Grail Engine Article