Quasiturbine

**1. Quasiturbine Overview:**
– Quasiturbine is a proposed pistonless rotary engine.
– It uses a rhomboidal rotor with hinged sides for compression and expansion.
– The design allows for a variety of profiles and characteristics.
– The engine’s rotation is not generated by pressure against seals.
– High eccentricity stators increase stroke displacement volumes.

**2. Quasiturbine Applications:**
– Patents for the Quasiturbine are held by the Saint-Hilaire family of Québec.
– The engine has been proposed for use as an internal combustion engine, pump, and Stirling engine.
– It has been demonstrated as a pneumatic engine and steam engine.
– Different designs include two-port with carriages, four-port without carriages, and a Stirling engine concept.
– The engine’s high displacement to volume ratio results in exceptional power density.

**3. Quasiturbine Designs:**
– **Two-port with Carriages Design:**
– The earliest design used a three-wheeled carriage to support the rotor.
– A prototype for an internal combustion engine was constructed.
– Ignition with fuel was never achieved in this design.
– The design aimed to support a new combustion mode called photo-detonation.
– Research supporting photo-detonation claims has not been published.

– **Four-port without Carriages Design:**
– This design simplifies the engine by eliminating carriages and doubling the cycles per rotor revolution.
– It has been demonstrated as a pneumatic engine and steam engine.
– The design is suitable for use as a pump and supercharger.
– A pneumatic engine of this design powered vehicles using compressed air.
– The design can potentially integrate pump and engine functions in one unit.

– **Two-port without Carriages Design:**
– This design combines aspects of the first two designs.
– It aims to improve efficiency and functionality.
– The Otto mode Quasiturbine uses spark ignition.
– The photo-detonation mode eliminates the need for spark plugs.
– The fuel/air charge auto-ignites with a powerful pressure pulse in the combustion chamber.

**4. History:**
– Prof. J. Ignacio Martínez-Artajo designed an adaptative rotary compressor in the mid-seventies.
– Research by Dr. Gilles Saint-Hilaire aimed to create a turbo-shaft turbine engine with components in the same plane.
– The Quasiturbine engine concept was patented in 1996.
– Demonstrations were conducted on various vehicles and products.
– Plans are in place to develop internal combustion prototypes for demonstration.

**5. Additional Resources:**
– International Journal of Science and Research articles provide insights into Quasiturbine components and behavior.
– US Patents for Quasiturbine AC and SC are available.
– ResearchGate profile and additional resources are accessible online.
– External links to Wikimedia Commons, official Quasiturbine site, HowStuffWorks, University of Connecticut Brash Steam Car video, and INIS at International Atomic Energy Agency offer more information and media about Quasiturbine.