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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.
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