Title: Internal combustion rotary toroidal engine.

Technical Field: The internal combustion rotary toroidal engine.

Background Art: It is important. Many engines of this type have been designed and patented, although none of these has so far been employed by the motors industry. See the following 2 documents on the background art: DE339761C (Reinhard Alt) 6 August 1921 (08.06.1921) and DE3825354Al (Armin Mylaeus) 1 February 1990 (01/02/1990)

Disclosure of Invention: This internal combustion rotary toroidal engine transforms the energy produced by the combustion of fuel directly into rotary motion. This engine is formed by a single toothed wheel (rotor) the single tooth functions as a piston (P). The rotor is inserted in a cylinder, whose sizes, internal height and diameter, are equal to those of the rotor. At the opposite side of the piston (P) there is a counterweight equal to the weight of the piston itself for balancing the centrifugal force. The toroidal volume described by the piston in one round is the cylinder of the engine, its cross section is semicircular. On top of the rotor's housing are arranged in a clockwise direction 7 (seven) components: 1 ^st - an air and burnt gas exaust valve (D); 2 ^nd , a cylynder closing valve (A); 3 ^rd , a combustion chamber; 4 ^th , a burnt gas exhaust valve (E); 5 ^th , a fuel injector (F); 6*, a cylinder closing valve (B); 7*, an air intake valve (C). The burnt gas exhaust valve (E) and the injector (F) are placed on the combustion chamber. All valves are connected to the rotor through camshafts, gears, chains and belts and open and close in a logical sequence by rotating of the rotor to allow air intaking, its compression, its ignition and the expulsion of burnt gas according to the next three phases. The ignition type is spontaneous (diesel). The reciprocal position of all engine parts and their functioning as down described stand for claim 1 (one)

Fig.1 , Phase 1. Air intake and burnt gas exhaust.

The piston (P) is just after the air intake valve (C) which is open to allow air in / the cylinder closing valve (B) is closed / the air and burnt gas exhaust valve (D) is closed / the cylinder closing valve (A) is open / the burnt gas exhaust valve (E) on the combustion chamber is open. In almost one round the piston is between the combustion chamber and the cylinder closing valve (B), the burnt t gas has been expelled, and the cylinder is filled with air. The direction of rotation is clockwise.

Fig.2, Phase2. Air Compression.

The cylinder closing valve (B) of the cylinder opens itself, let the piston pass and closes itself after its passage to allow air compression / the air intake valve (C) remains open to prevent the formation of vacuum in the cylinder / the air exhaust valve (D) is closed / the cylinder closing valve (A) is open / the burnt gas exhaust valve (E) is closed / as the piston has arrived between the combustion chamber and the cylinder closing valve (B) the air is compressed and ready for ignition by injection of fuel. If there is too much space between the combustion chamber and the cylinder closing valve (B) due to constructional reasons and therefore much residual air, it can pass into the conbustion chamber through a conduit between the top of the cylinder, just before the valve (B) and the combustion chamber. (Fig.4 Air compression) or through a conduit inside the piston between its front and top face. (Fig.5 Air compression) In this last case the piston has to be longer man the distance between the combustion chamber and the cylinder closing valve (B). Dipendent claim 2. and claim 3.

Fig.3 Phase3. Fuel injection, ignition and expansion of burnt gas.

The position of the piston (P) is just beyond the right limit of the combustion chamber / the cylinder closing valve (B) opens and let the piston pass / the air intake valve (C) is closed / the air and burnt gas exhaust valve (D) is open for letting out the air between the piston and the cylinder closing valve (A) / the cylinder shutofF valve (A) is closed. Now injection of fuel ignition, combustion and gas expansion. Note 1: There is a combustion every three revolutions of the rotor and putting together three identical modules, suitably offset, you would have a combustion on every turn.

Note 2: The burnt gas exhaust valve (E) serves to expell a greater amount of burnt gas only and can be removed for greater simplicity as it is not essential to the functioning of the motor in this case in Phasel in the air exaust valve (D) is open.

Note 4: This engine is simpler and lighter than reciprocating engines for the absence pistons, crankshaft, connecting rods and cranks and other mechanisms having similar functions. Moreover, at an equal distance between the piston and the axis of the motor shaft, the lever developed by this type of engine is greater than that developed by the reciprocating engine, and therefore more powerful to equal consumption of fuel and varying the volumetric ratio between the chamber combustion and the cylinder both ignition type are possible spontaneus ignition (diesel) and spark ignition.

4. Description of the drawings. The figures 1-2-3-4-5 are a cross section of the engine and represent all parts of which it is composed and their relative position. (Indipendent Claim 1) Figures 4 and 5 describe also the two conduits for the passage of gas between the cylinder shut-off valve (B) and the combustion chamber. (Dependent Claim 2 and 3)

5. Best way of realization: The technique of production of engines is well known.

6. Industrial Applicability: It is as well, well known the use of internal combustion engines.