US2092454A - Charge mixing and heating device and/or vaporizer for use in cylinders of internal combustion engines - Google Patents

Description

Sept. 7, 1937. A. HEADEN 2,092,454 CHARGE MIXING AND HEATING DEVICE AND/OR VAPORIZER FOR USE IN CYLINDERS OF INTERNAL COMBUSTION ENG YNES Filed Jan. 25, 1935 LUC'E'HN H HEHFEN Patented Sept. 7, 1937 PATENT OFFICE CHARGE MIXING AND HEATING DEVICE AND/OR VAPORIZER FOR USE IN CYLIN- DEBS OF INTERNAL GIN ES COMBUSTION EN- Lucean Arthur Headen, Camberley, England, as-

signer to George P. Koelliker, Cleveland, Ohio Application January 23, 1935, Serial No. 3,104

5 Claims.

This invention relates to charge mixing and heating devices and/or Vaporizers for use in the cylinders of internal combustion engines and has for its object the provision of an improved device of this nature which shall be inexpensive to pro duce and simple to fit.

According to this invention an apertured plate, which may act as a baffle, is disposed within the cylinder of an internal combustion engine at right angles to the axis of said cylinder and is so formed that it will present one or more hot spots to an entering charge of fuel and air due to the heating of the plate by a preceding combustion effected in said cylinder.

It is preferred to dispose the plate at the level of the normal joint between the cylinder head and the cylinder block, in which case, of course, it must always be arranged so that it is clear of the piston working in the cylinder when the said piston is in its top dead center position, and a very convenient and advantageous arrangement consists in. forming the apertured plate integrally with a gasket adapted to be interposed between the jointing faces of the cylinder head and cylinder block in the place of or in addition to the normally provided jointing gasket.

The apertured plate may be plane or somewhat dished and the opening or openings therethrough may be of any desired size or shape, being preferably formed with undulated, serrated or like edges of which the deepest points of the serrations, undulations or the like may be disposed, in some cases, almost at the outer edge of the plate.

In order that the invention may be clearly understood, there will now be described some nonlimitative examples of the way in which it may be carried into effect, reference being made to the accompanying drawing, wherein:

Figure l is a fragmentary plan view of a gasket formed integrally with one construction of the charge mixing and heating device according to the invention;

Figure 2 is. a section taken on line 22 of Figure 1 indicating the gasket in place between the jointing faces of the cylinder head and cylinder block of an. internal combustion engine;

Figure 3 is a view similar to Figure 1 illustrating a modified form of construction of the charge mixing and heating device according to the invention.

In the examples shown in Figures 1 to 3, a gasket l of thin sheet copper or the like is shaped in the requisite manner, with the necessary aperand the like, to constitute a jointing member for interposition between the cylinder block 3 and cylinder head 4 (see Fig. 2) of an internal combustion engine, it being preferred to employ a gasket of the usual type (not shown) on one or both sides thereof to afford a measure of heat insulation to the gasket according to the invention.

In contradistinction to the usual type of gasket, however, these areas of the gasket according to the present invention which would register with the respective bores of the cylinders 5 (see Figure 2) in the cylinder block 3 if they were not removed are each formed with an aperture or apertures, generally indicated by 6 in the figures, which is or are of lesser area. or lesser total area than the full cross-sectional area of each of said cylinder bores 5.

These apertures are formed with irregularly or regularly serrated, undulated or otherwise similarly shaped edges so that, when the gasket is secured in position, there is present a number of inwardly directed tongues l of more or less pointed formation in each cylinder bore.

The particular construction of gasket shown in Figures 1 and 2 has the area corresponding to the cross-sectional area of a cylinder bore 5 formed centrally with an aperture ii in the shape of a six-pointed star, the innermost points of the edge of this aperture being located on a circle having a radius approximately half that of the cylinder bore. It will, of course, be understood that the points 'i may be disposed at other distances from the axis of the cylinder bore if. desired and that the outermost points of the edge of the aperture 6 may vary in position also, they being located on a circle having a radius approximately three-quarters of that of the cylinder bore 5 in the example illustrated.

Figure 3 represents a gasket having the aperture 6 formed with irregularly serrated edges and. provided with separate apertures 60 to encircle the inlet and exhaust valve openings (not shown).

Any desired shape may be imparted to the inwardly directed tongues left by the forming in the vaporizer plate of an aperture with a serrated or like-edge, for example, the tongues may be bent upwardly and/or downwardly out of the plane of the plate or otherwise formed to ensure the presence of hot spots during their use in the cylinder of an internal combustion engine.

It is found that the use of the charge mixing and heating devices and/or Vaporizers according to the invention is of particular value in internal combustion engines adapted to be supplied from two alternative sources of fuel supply, one a light fuel and the other a heavy fuel, but such devices also improve the operation of engines working with a light fuel only. In the case of an engine intended to operate with alternative fuel supplies, the two fuels may be supplied from separate carbureters or from a single twin-bowl carbureter of known form.

Having now particularly described and ascertained the nature of my invention and in what manner the same is to be performed, I declare that what I claim is:

1. As an article of manufacture and sale a metallic gasket adapted to be placed between the junction surfaces of an internal combustion engine and its cylinder head, said gasket being provided with bolt holes, water jacket communication holes and a plurality of apertures adapted to register with the cylinder bores of said internal combustion engine, said apertures having their circumferential edges arranged totally within the cross-sectional areas of the cylinder bores of said engine, and having their edges serrated, so as to provide said gasket with a plurality of inwardly extending pointed fingers adapted to form hot points within the cross-sectional areas of, said bores.

2. As an article of manufacture and sale a metallic gasket adapted to be placed between the junction surfaces of an internal combustion engine and its cylinder head, said gasket being provided with bolt holes, water jacket communication holes and a plurality of apertures adapted to register with the cylinder bores of said internal combustion engine, each of said apertures having its circumferential edge arranged within the cross-sectional area of the respective cylinder bore and also having its edge serrated and spaced from the edge of the respective cylinder bore, so as to form said gasket with a plurality of inwardly extending hot points within the cross-sectional area of each bore.

3. As an article of manufacture and sale a metallic gasket such as described in claim 2, wherein the edges of said apertures are irregularly serrated to form a plurality of irregularly arranged hot points within the cross-sectional areas of the cylinder bores of said engine.

4. As an article of manufacture and sale a metallic gasket adapted to be placed between the junction surfaces of an internal combustion engine and its cylinder head, said gasket being provided with bolt holes, water jacket communication holes and a plurality of pointed-starshaped apertures adapted to register with and to be fully arranged within the cylinder bore areas of said internal combustion engine, the innermost points of the edges of said apertures being located on a circle having a radius approximately half that of the cylinder bores of said engine.

5. As an article of manufacture and sale a metallic gasket as described in claim 4, wherein the outermost points of the edges of, said apertures are located on a circle having a radius approximately three quarters of the cylinder bores of said engine.

LUCEAN ARTHUR HEADEN.

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