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The True Rotary Internal Combustion Engine

The True Rotating Internal Combustion engine designed and built by John Archer is illustrative of the British genius for design it incorporates , simplicity with elegance of design and innovative concept. This is a site that is worth looking at !! Details from the patent as well as animations and a picture of the working prototype model have been given .

The Tri-Dyne Engine

The Tri-Dyne engine was designed by Great Britain as an improvement on the Wankel engine , one of many unsuccessful attempts that have been made. Great Britain was also one of the first to experiment with using turbine engines in cars. Many people are under the impression that the Rover company was the first to design and build such a car , in actual fact it was the Italians who succeeded , and it was Fiat who test drove the first Turbine powered car. Here is how the Tri-Dyne engine works:-
Tri-Dyne rotary engine

The Tri-Dyne engine, a British design, consists of three rotors .The large, triangular central rotor is called the power rotor. The other two are a combustion rotor and a barrier valve. The power rotor turns in the opposite direction from the combustion rotor and barrier valve. It has three curved lobes that fit into three semicircular cavities in the periphery of each of the two smaller rotors. The three are geared together by spur-shaped
gears on the end of each rotor; all of them turn at the same speed. The motion is entirely rotary with no eccentricity. The three cavities in the combustion rotor form the combustion chambers and the profiles of all three rotors are such that, while not actually touching each other, they interact to connect these cavities alternately with the inlet and exhaust pipes and isolate them during the combustion process. It is not necessary that the cavities be positively sealed because of the high speed of operation. Clearance of 0.1 millimetre (0.004 inch) is provided between the interacting surfaces. Two spark plugs are installed in the casing at a point where they communicate with the combustion rotor cavities as they pass at the instant of firing. The advantage of the Tri-Dyne engine over the Wankel engine lies in the elimination of the seals that the latter requires at the apexes of its triangular rotor that limit the speed at which it can operate and that are difficult to lubricate.