US1618139A - Vaporizing attachment for internal-combustion engines - Google Patents

Description

1 1927. Feb 5 E. RYDER VAPORIZING ATTACHMENT FOLINTERNAL COMBUSTION ENGINES Filed Aug'. 19. 1926 rllln Patented Feb. l5, 1.927.

UNITED STATES `PATENT OFFICE.

ELMER RYDER, OF ELGIN, ILLINOIS. l

' 'VAIPORIZING- ATTACHMENT FOR INTERNAL-COMBUSTION ENGINES.

Application filed August 19, 1926. Serial No. 130,156.

In the operation of automobile engines, socalled wet pockets form in the intake manifolds, due to the dropping out of the gas streams of the heavier unvaporized particles of the liquid fuel. This is especially noticeable with low grade or cheap fue s, and also when the manifold is cold as when first starting the engine. Manifolds, as heretofore used, have had no way to clear them of these deposits of unvaporized fuel,

with the result -that some, if not a greater' portion o-f this fuel nds its way into. the

crank case past the. engine pistons to dilute` the crank case oil, with a consequent thinning of the lubricant and injuring the wearing parts of the motor. Even after the engine has warmed up and running, the heav- A ier particles of unvaporized fuel continue' to drop vout of the gas 'stream'and collect in the manifold to do injury as stated.`

One object of my invention is to provide means in connection with the manifold to free or clear itl continually of the liquid fuel particles whichvare deposited therein from the passing gas streams, and thus avoid the formation of wet pockets to do injury to the motor as heretofore.

A further object of my invention 1s to continuously feed this deposited liquid fuel back into the manifold under a pressure greater than that in the manifold, so as to finely atomize the liquids and cause them Vto,

readily and quickly vaporize for use in the gas supply, and thus increase the etiiciency of theen'gine.

` Another object of my4 invention 'is toprovide means whereby the pres/sure at which the collected- `liquid is discharged into the manifold may be regulated, and thus enable the mechanism to be set for fuels o'f different grades.

The invention consists further in the matters hereinafter described and claimed. 4

In the accompanying drawings Fig. 1 is a view of an intake'manifold, in vertical section, and showing applied theretothe assembly of my invention; andl Fig. 2 is an enlarged vertical sectional view through the discharge nozzleof the assembly and associated portion ofthe manifold.

' In the drawings, I have shown an intake manifold 1 of a type designed for a four cylinder motor. it being of course understood that my invention can. readily be applied to manifolds of other types. The mogravity to said walls from the gas streams passing through the manifold.

These depressions form pockets, and 'tapped into the bottom of .each one is an out. let .pipe 6. The pipes from the several pockets or depressions 5 lead to a common collecting fitting 7 preferably located below the lowermost point of the manifold, so that the liquid fuel collected in the pockets may drain .by gravity into said fitting. The latter has a downwardly extending outlet pipe 8,- which connects with the intake of a mechanical forcingv means '9, whichmayA be in the form of a lgear pump.- The intke of` the pump -is below the fitting 7 so4 `as to be 'supplied `with liquids thereby. The outlet ofthe pump is connectedby a pipe 10 to a nozzle 11 located in the manifold 1 ata point' between the intake ports2 of the engine and the throttle valve 4, as shown in Fig. 1. f v

The nozzle 11 is arranged to discharge toward the intake ports 2, and has a valve 12 atV itsl discharge end, as shown in Figs.' 1

and 2. lThis valve, .as shown in Fig. 2, is of the poppct `type andl is designed .to seat against the upper end of the nozzle, which is madetapered for the purpose.v The stem' 13 of the valve extends downward thro-ugh the lower portion of the nozzle casing and is threaded to receive a nut' 14 for adjusting the tension of .a'coil spring 'surroundf` ing ythe lower part of the lstem between the nut and the under sideof the nozzle casing, as clearly shown in Fig. 2. By adjusting the tension ofthe spring through the'turning of the'nut up or down the stem, the valve may be set to regulate' the pressure at which the liquids'are discharged from the nozzle into the manifold.V

'The'operation lof the assembly is as follows: A mixture of air and liquid fuel, the latter being supplied by the carbureter, is drawn into the manifold 1 on the suction strokes of the pistons'in the engine cylinders.

All of the liquid fuel picked up by the air stream at the carbureter'does not sufficiently mix with `the air to be vaporized thereby, and consequently a certain percentage of the liquids is carried in suspension in the airv and, lbeing heavier, drops out of tl1e"`a'ir stream before reaching theengine cylinders. This liquid collects on the inner walls of the manifold and drains toward the lowermost point of the latter. By the provision of the pockets 5, 5 in the path of this drain, the depositedliquids'collect in these pockets and vflow out of the same to the pump 9 kthrough the piping shown. The pump is oper-ated either by the engine or at the same time-as 'the engine, if a' separate source of power is used, and discharges the collected liquids back into the manifold under a fairly high presure as compared to that in the manifol In having the p-ump discharge the liquids into the manifold under pressure, the discharged liquids will be broken up into finer particlesthan .at the feed nozzle of the carbureter and vaporize much more readily and thoroughly. In this way the heavier liquid particles, whichnaturally dropout of the gas streams passing through the manifold, are returned to the manifold under vpressure and vaporized to increase the efficiency of the engme. Moreover, the manifold is kept substantially free of the heretofore objectionable wet pockets, thereby minimizing crank case dilution. Furthermore, by collecting the deposited liquids from the manicharging the liquid fuel collected from the manifold atla greater pressure than that in the manifold, will cause anvimmediate vaporization ofthe injected fuel and thus permit quicker starting of the en 'ne regardless of how cold the motor may'ieJ y In order to assemble the nozzlel 11'v in the manifold 1 and also reach the nozzle for adlustment from time to timeyas may be required, I provide in one side of the upright portion of the 'manifold an opening Y16 through which the nozzle may be inserted and removed fn disconnection of the union 17 between the nozzle and the feed pipe 10. A plate 18 is clamped over the opening 16 to close the same. This plate supports the nozzle in the manifold 1 in the manner shown.

. While I have shown my invention applied to an intake manifold, it maT be applied to any conduit through which a combustible mixture, as liquid fuel and air,is supplied to a motor. Moreover, the details of structure and arrangement of parts may be variously changed and modified without departing from the spirit and scope of my invention.

I claim as my invention:

1. In an internal combustion engine, the combination with a fuel intake conduit through Whiclr'a mixture of combustible liquid fuel and air is supplied to the engine,

of means in the conduit for collecting thev unvaporized liquid fuel particles dropped from the mixture, and means including a pump for removing the collected liquids from the conduit and for discharging the same" back into the conduit under lpressure for causing the vaporiz'ationof said liquids.

2. In-an internal'combustion engine, the combination with a fuel intake. conduit through which-a mixture of combustible liquid fuel and air is supplied to the engine, of means in the conduit for collecting the unvaporized liquid fuel particles dropped from the mixture, means including a pump for removing the collected liquids from the conduit and for'discharging the same back into the conduit under pressure for causing the vaporization of said liquids, and means for regulating the pressure at which` said liq-` uids are discharged into the conduit. 4 3. In an lnternal combustion engine, the combination with an intake manifold, of

pockets in the lower walls of the manifold for collecting the unvaporized liquid fuel particles` dropped from the gas mixture passing through the manifold, outlet pipes tapped into said pockets, a nozzle in said manifold,-and a force pump connected with said pipes and nozzle, respectively, for' removing the liquids from said pockets and discharging the same into said conduit unyder pressure through said nozzle.

4.- In an internal combustion engine, the. combination with an intake manifold, of pockets in the lower Walls of the manifold for collecting the unvaporized liquid fuel particles dropped from the gas mixture passing `through the manifold, outlet pipes tapped into said pockets, a nozzle in said manifold, a force pump connected with said pipes and nozzle, respectively, for removing the liquids from said ockets and discharg-v ing the same into said sure through said nozzle, and a valve for regulating the pressure vat whichthe liquids are discharged from said nozzle.

.5. In an internal combustion engine, the combination with an intake manifold, of

pockets in the lower Walls of the manifoldfor collecting the unva orizedliquid fuel partlcles droppedfrom t e gas mixture passconduit 4under presv ing through the manifold, outlet pipes ing an opening at the nozzle for the passage tapped into said nozzle, a nozzle in said of the same therethrough, and a cover plate manifold, a force pump connected with said' for said opening and supporting said nozzle. '10 pipes and nozzle, respectively, for removing In testimony whereof I aix my signature 5 the liquids from said pockets and dischargthis 16 day of August, 1926.

ing the same into said conduit under pressure through said nozzle, said manifold hav- ELMER RYDER.

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