US1936229A - Vaporizing device for internal combustion engines - Google Patents

Description

1933- P. w. EASTHOPE El AL 1,935,229

VAPORIZING DEVICE FOR INTERNAL COMBUSTION ENGINES Filed Jan. 25, 1933 INVENTORS PERCY WILLIAMS EAST/mp5 GEORGE EASTHOPE BY I ATTORNE Y5 Patented Nov. 21, 1933 UNITED STATES- 1,936,229 7 VAPORIZING. DEVICE FOR INTERNAL v COMBUSTION ENGINES Percy Williams Easthope and GeorgexEasthope, Vancouver, British Columbia, Canada Application January 25, 1933. Serial No. 653,390

8 Claims. (01. 123-191) It is common in-engines using the heavier grades of fuel to have improper combustion and to pass an indefinite quantity of said fuel down thecylinder Walls into the crank case where oil dilution of a more orless serious nature develops and the power content of the fuel oil is largely wasted. It is with a View to overcoming this'seriou's trouble that, the present'device isdesigned, viz: to provide means for vaporizing the fuel at the point of combustion that it is entirely consumed on the firing stroke, so that its full thermal efiiciency is obtained and the greatest fuel economy is attained, to prevent oil dilution and thus increase the life of the engine and effect economies in the lubrication also.

The invention consists essentially of a vaporizer or apertured baliie plate mounted in the. combustion head of the engine and disposed between the point of fuel intake and the piston head, as will be more fully described in the following specification and shown in the accompanying drawing, in which:-

Fig. 1 is a sectional view of the combustion chamber of an internal combustion engine showing the invention.

Fig. 2 is a plan view of the invention Fig. 3 is a diagrammatic View showing the flow through the intake ports to the combustion space of the cylinder.

Fig. 4 is a diagrammatic view showing the flow of exhaust gases from combustion space of the cylinder to the exhaust port.

In the drawing like characters of reference indicate corresponding parts in each figure.

The numeral 1 indicates generally a cylinder having a cylinder head 2 provided with intake and exhaust valves 3 and 4 respectively in the usual Way. The numeral 5 indicates the cylinder walls, 6 the-water jacket and 7 a spark plug.

' The numeral 8 indicates the counter bore of the cylinder or. that portion which is above the normal travel of the piston 9. Fitted in the counterboreS of the cylinder 1, either by force fit or by attachment to the cylinder head 2, is a vaporizer generally indicated by the numeral 10, which vaporizer is preferably formed. with a sleeve 11 which is in intimate'contact with the walls of the cylinder and an annular baflie plate 551 12 which is in the form of an inverted truncated cone. Within thebase of the cone is an upstand ing collar 13 and extendingradially from the collar to the sleeve 11 is a plurality of radial webs 14 to define between them a plurality of segmental pockets 15 each having a substantially central orifice 16in the baffle plate which is provided with slightly'upturned marginal edges 1'7.

The number of 'webs 14 and the number of pockets 15 and also" the thickness of material used will depend on the size and nature of the 65.- engine to which the vaporizing device is fitted. The Webs form a mediumfor transmitting surplus heatfrom the balile to the water jacketted or other cylinder walls and are such as to permit the recurrent firing of the combustible charges to maintain the vaporizing device at such temperature as to promote efficient vaporization of the fuel oil. v t

As a desirable adjunctto the vaporizer 10, but not an essential, We provide between said bafile and the cylinder head a flanged plate 18 having apertures 19 and 20 of 'the" same size as and registering with the heads of the intake and exhaust valves 3 and 4 respectively; the plate being set at such a distance from the cylinder head that each of said valve heads close of]? their respective apertures when in full open position. Below the plate 18 and extending in a curve from said plate across the aperture 19 is a deflector 21.

The oil on entering the cylinder through the 8 5- intake valve 3 is not usually sufficiently reduced to a state of high division as to promote com- 7 plete combustion and certain globules of wet fuel pass into the cylinder. These globules are entrapped on the .bafile plate 12 and upon the webs 14, which being heated to an appreciable extent raise their temperature, so that the piston movement and the gaseous disturbance incidental thereto causes said globules to break up and combine with the air content, thus producing a highly combustible gas which is readily ignited and completely consumed, it also serves to prevent any globules of wet oil from passing downwards onto the cylinder walls and into the crank case, thus the whole of the oil admitted is vaporized and converted into combustible gas and the ut- Y most thermal efiiciency is obtained therefrom. Where the apertured plate 18 is used, which is obviously only on engines having direct overhead'valves', as the inlet valve, initially opens, or 1 during its travel to full open position, the incoming charge follows the line of least resistance and to some extent passes through the aperture 19 where it is defiected laterally across the vaporizer 10, so that any unbroken fuel. lobules are drawn away from the cylinder wall adjacent said aperture, as the valve reaches its full open position, see Figure 3, the gas flow is directed acrossthe head of the exhaust valve 4, this gas being relatively cool reduces the temperature of the exhaust valve and absorbs heat therefrom which promotes evaporation of the charge.

When the exhaust valve 4 is moving to full open position the exhaust gases from the engine flow through both apertures 19 and 20, but immediately the exhaust valve reaches full open position and registers with the aperture 20 of the plate 18, as shown in Figure 4', the exhaust gases flow through the aperture 19 past the head of the inlet valve 3 raising its temperature and losing some of its heat in so doing, thence passing out past the exhaust valve 4.

It will be obvious that the use of the plate will serve to equalize the temperature of the valves 3 and 4, raising the temperature of the former and reducing the temperature of the latter to the benefit of both. v

What we claim as our invention is:

I. The combination with an internal combustion engine cylinder, of a vaporizing device comprising an annular bafiie extending'inwardly from the side walls of the cylinder whereby liquid fuel is prevented from passing downwardly along said' side walls towards the piston and an upstanding collar. along the inner peripheral edge of said bafile.

2. A vaporizer for internal combustion engines comprising an annular bafile adapted for insertion into the combustion head of a cylinder and combustion head of a cylinder, said bailie being divided into a plurality of pockets each having a bottom opening, each of said pockets having an upstanding collar surrounding the bottom opening and being remote from the pocket side walls.

4. A vaporizer for internal combustion engines comprising a battle adapted for insertion into the combustion head of a cylinder, said baffle being divided into a plurality of pockets each having a bottom opening, each of said openings being bordered by an upturned rim. 7

5. A vaporizer for internal combustion engines comprising a bafile in the form of an inverted truncated cone and having an upstanding rim about its inner periphery.

6. The combination with an internal combustion engine having a cylinder and head in which latter inlet and exhaust valves are movable parallel to the piston movement and-a plate extending across the cylinder adjacent the end of the valve stroke, said plate having apertures adapted to be closed by each of said valves when in full open position.

7. The combination with an internal combustion engine having a cylinder, a head, a piston and inlet and exhaust valves movable parallel to the piston movement, and a baflie extending across the bore of the cylinder, said bafiie having an aperture adapted to be closed off by the head of the inletvalve whensaid valveis in full open position.

8. The combination with an internal combustion engine having a cylinder, ahead, a piston and inlet and exhaust valves movable parallel to the piston movement and a baifie extending across the bore of the cylinder having apertures registrable with the heads of the valves when in full open position whereby a charge of gas entering through the inlet valve is directed across

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