Diesel Rotary engine.

PATENT AS AFRICAN AND MALAGASY

INDUSTRIAL PROPERTY

P. 887

yaoundê (Cameroon) International Patent Classification: 02 no. 02004 F.

O&. THE I.

15 To 20 hr 31 May 1965 requested of Mn

to ro.A.M.p. 1. (Pp.v. No. 51,921) by

residing in France.

5 May 1970 delivered

Publishes official ballot № 1 of 1970

PRIORITY:

Patent application deposited in

It has already been proposed to construct a diesel cycle rotary engine of the type comprising a rotor n-lobed profile epicyclic eccentrically rotating within a stator to (n + 1) (n + 1) 5 lobe forming working chambers.

This diesel engine was type prechamber turbulence caused by a small port between the chamber and the prechamber. It has been found that with this particular rotary engine, a

10 swirl naturally builds up in the working chambers simply by rotating the motor and that turbulence can be used directly for inducing turbulence in a cylindrical combustion chamber whose axis is parallel to the axis of the

15 engine having the opening in the working chamber can be very large, thereby preventing the transfer of gas at the time of the trigger.

The present invention relates to a rotary engine a diesel, using natural this turbulence, which is particularly characterized by the fact that each lobe of the stator is assigned a combustion chamber cylindrical axial length of which is equal to that of the rotor and in which one or more injectors distribute the fuel in the inducted air stream in the chamber.

The advantage of such an arrangement relative to that of the piston diesel engines is to ensure an almost mathematical the various turbulence in two dimensions only, then they must be generally examined in three dimensions.

The advantage relative to that applied to other types of rotary engines is the natural formation of turbulence in the working chambers still, the absence of passage segments to the combustion chamber, which losses, as well as being able to use the entire length of the generatrix.

Another feature of the invention includes introducing a intake air in a plane exactly perpendicular to the axis of the motor and to the generatrices of the working chambers and combustion by laying the conduit sufficiently to cause the inflow swirler is additive to natural turbulence.

Another feature of the invention consists of a judicious distribution substantially equidistant tie rods for attendant to clamp flanges, said tie rods being the nearest possible to the contour of the working chambers so as to provide an excellent seal, the various elements required each working chamber such that the combustion chamber, the intake valve, the exhaust valve, being regularly interposed between said tie rods. Both valves may be adjacent, the combustion chamber being located to the right or left of the set of these valves, or the combustion chamber may be placed between the two valves.

The description which will follow will better understand the features of the invention.

Fig. 1 is a cross-section of the engine, object of the present invention, which has a rotor with four lobes and five working chambers, whereon there is detailed only - the yoke part corresponding to a working chamber, the rest of the bolt being disposed in the same way for each working chamber.

Figures 2 and 3 are the variants of fig. 1.

The fig.. 4 - is a partial longitudinal section along the plane of IV-IV of Figure 1.

Fig. 5 is a partial longitudinal section along the plane V-V delay of fig. 1.

The fig.. 6 is also a partial longitudinal section scale, according to junk-VI of Figure 1, passing through the combustion chamber and the intake conduit.

The fig.. 7 is a variant of the preceding, showing another possible position of inqecteurs.

The fig.. 8 gives the détailégrandi combustion chamber provided with a liner.

Fig. 9 is a longitudinal section of

the previous one.

See Figure 1 of after that round the eccentric I which rotates in the direction of arrow 2, the rotor 3, epicyclic profile, having four lobes, rotates in the direction of arrow 4.

The stator 5 has five lobes in hollow, formed by the envelopes of the profile of the rotor defined by the segments 6, a known technique, which thus define the five working chambers above mentioned, to the position shown in Figure 1, the rotor is at top dead center to the upper chamber. If it follows the movement of the RO Thor * with respect to the stator, it is shown that the variation of the position of the center of gravity of the volume chambers follows the arrows 7 so that in each working chamber the variation of the center of gravity of this volume, during one revolution of the eccentric 1, follows the arrow 8, it is to say that it occurs for each revolution of crankshaft rotation of the air in the chambers of the same direction as the crankshaft and in a direction of the rotor.

In other words, we can say a more vividly that the rotor to four teeth meshes in each working chamber with a gear that rotates air four times more quickly and in a reverse direction of the rotor, while having varying volumes as it is expanded or compressed; this rotational speed equal to that of the crankshaft is thus an substantial turbulence, well defined in two dimensions and identical over the entire length of the generator.

According to the invention, on the periphery of each working chamber, fits a combustion chamber, such that cylindrical 9j, emerging largely in the working chamber by a rectangle whose short side is 10 and the long side is the generator. The air contained in the working chamber can be considered also as a small-diameter gear which meshes with the gear of each air chamber embodied by the arrow 8 and which, naturally rotates in reverse direction along the arrow 11, always in two dimensions, and identically over the entire length of the generatrix.

By way of example, the injection can be made as shown in the Figure. 6 with the injectors or as seen in Figure 12. 7 with the injectors 15. In the first case, two injectors open out on a generatrix of the chamber and the jets are arranged substantially as 14 with an igniter disposed in a flange 15. It is possible also to arrange a single in-^ enc at the center of the generator. In the second case, the jets from injectors 13 located in the flanges are oriented substantially along the ignition plug 16 and is placed at the center of a generator.

On the Figure 1, 2 and 3, - see égalementla intake valve 18 and the exhaust valve 19 controlled as usual.

Figure 5 shows that the exhaust manifold 20 is oriented in an axial plane towards the rear of the cylinder head then, that on the contrary, the inlet pipe 21 has its central plane in the center plane of the rotor, therefore perpendicular to the axis of the motor. The axis of the inlet pipe intersects the working chamber at a low angle.

As it is visible on each of the Figure.

1, 2 and 3? movement of the intake air, represented by arrow 22, has a trajectory tangent to rotation materialized by the arrow 8 and in the same direction, it does not thwart the rotation naturelie but in addition thereto, by symmetry it creates no parasitic eddy movement in the direction of the generatrices.

In fig. 1, the combustion chamber is to the left of both valves; seen in Figure. 2, it is to the right of both valves, in fig. 3 it is in the center, between the two valves.

To further facilitate, always in the same direction, the turbulence, outlet is provided an operating clearance between the rotor and the stator on its envelope, larger right of the combustion chamber on the left of the annular chamber, so as to create still flush effect from left to right when the rotor is at top dead center:, still facilitate turbulence in the same direction and the rotation of the air in the chambers of combus-activation along the arrow 11.

See also that the tie rods 23 are regularly spaced, interposed between the different elements of the cylinder head and as closely spaced as possible the table curve of this cylinder head; as seen in the Figure. 4, the gas seal is obtained in good conditions.

A tie rod 24 ensures by additional

its tightening a good seal at the top of the combustion chamber.

Inside the combustion chamber, one can arrange a jacket 25 (Figure 8), more or less adjusted to its ends, but without contacting the cooled portion in the central regions, so as to maintain a high temperature in accordance with a method known per se.