QUASITURBINE ENGINE PDF

The wheels of these four carriages, making twelve wheels in total, ran around the periphery of the engine chamber. A prototype of an internal combustion engine to this design was constructed, and enthusiastically reviewed in European Automotive Design magazine September, The prototype was turned by an external engine for 40 hours. However, ignition with fuel was never achieved. If it was attempted no results were ever released, and development work on this design was suspended.

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The wheels of these four carriages, making twelve wheels in total, ran around the periphery of the engine chamber. A prototype of an internal combustion engine to this design was constructed, and enthusiastically reviewed in European Automotive Design magazine September, The prototype was turned by an external engine for 40 hours.

However, ignition with fuel was never achieved. If it was attempted no results were ever released, and development work on this design was suspended. Photo-detonation[ edit ] The two-port design with carriages was proposed to make possible a new and superior mode of combustion, termed photo-detonation by the Quasiturbine inventors.

This resembles detonation , as used in the Bourke engine , akin to knocking and pinging undesirable in common internal combustion engines. As of [update] , no research has been published supporting this claim.

A related idea that flame transfer would be possible through special ports is similarly unsupported. Four-port without carriages[ edit ] Quasiturbine QT-SC configured as a steam engine The second Quasiturbine design is greatly simplified to eliminate the carriages French sans chariots or SC.

At the same time, the ports were duplicated on the opposite side of the housing, thus converting the operation from four strokes per cycle to two and doubling the number of cycles per rotor revolution.

This mechanism has been demonstrated running as a pneumatic engine using stored compressed air, and also as a steam engine. This is also the design proposed for use as a pump , and particularly as a supercharger. This design uses redesigned blades, longer than those for a similar sized housing of the first type owing to the absence of the carriages, and lacking the distinctive crown contour.

Only the basic rotor geometry is common with the earlier design. A pneumatic engine of this design was demonstrated powering a go-kart in November , and another powering a small car in September , both vehicles using stored compressed air to power the engine.

As of [update] a pneumatic chain saw driven by an air hose from a conventional external compressor is under development. With a suitably redesigned housing to allow for thermal expansion, the same rotor design has been demonstrated as a steam engine.

Another potential variation of this design uses the two sets of ports independently, one as an engine and the other as a pump, thus potentially integrating the functions of a pump and its driving motor in one shaftless unit.

One restriction of this usage is that the two fluids must be similar; It would not be possible for example to drive an integrated air pump with hydraulic fluid, as the rotor design is significantly different.

As of [update] no prototype of this variation has been demonstrated. Two-port without carriages[ edit ] This third design combines aspects of the first two. As of [update] this design is conceptual only. It has not been built, but is used for purposes of illustration. If built it would not support photo-detonation. Many other designs are possible within the patented Quasiturbine model, with or without carriages and with differing numbers of ports.

As of [update] , which design will be used for further work on the internal combustion version has not been announced. History[ edit ] Prof. Lately, research was conducted by Dr. Gilles Saint-Hilaire, a thermonuclear physicist , and members of his immediate family. The original objective was to make a turbo-shaft turbine engine where the compressor portion and the power portion would be in the same plane.

In order to achieve this they had to disconnect the blades from the main shaft, chain them around in such a way that a single rotor acts as a compressor for a quarter turn and as an engine for the following quarter of a turn.

The general concept of the Quasiturbine engine was first patented in Small pneumatic and steam units are available from the patent holders for sale or hire for research, academic training and industrial demonstration, as is a book largely in French describing the concepts and development of the design. The patent holders have announced that they intend to make similar internal combustion prototypes available for demonstration.

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How Quasiturbine Engines Work

Is the piston engine concept the best for ever? Why is it so difficult to substitute it? The Quasiturbine systematic engine concept analysis gives answers Theory - Quasiturbine Concept Quasiturbine Not a Vane Type The vane-type pumps are known for their very limited engine torques due to the amplitude of their seal movements, a movement the Quasiturbine brings back to imperceptible. They have also the major geometrical defect of not allowing a high geometric compression ratio, which makes them doubly inapt for combustion engines. The compressible fluid must initially charge in pure lost the residual chamber volume at Top Dead Center before providing the push, which destroys their efficiency.

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