US1431224A - geabe - Google Patents

Description

E, w. GRAEF. TEMPERATURE CONTROLLING APPARATUS.

APPLICATION FILEI5 MAY I, I919.

1 ,43 1 ,224, I Patented Oct. 10, 1922.,

2 SHEETS-SHEET I.

We re/afar E. W. GRAEF.

TEMPERATURE CONTROLLING APPARATUS.

APPLICATION FILED MAY1,19I9.

1,43 1,224. I Patented 10, 1922.

2 sHEETS-sHEET 2.

Patented Oct. 10, 1922.

,uulrso srarss PATENT OFFICE.

nnnnsr w. (menu, orcn nnwnnn, New anasnY, risers-non t orwoonrannnnnw Year:

TO HENRY J. GAISMAN,

TEMPERATU'BE-GONTROLLING APPARATUS.

Amilicationfiled May 1. .1919. Serial No. 294,121.

To all whom it may concern: 7

Be it known that I, Enuns'r 5W. GRAEF, a citizenof the United States, and resident of Caldwell, in the county of Essex and State or New Jersey,have invented certaln new and useful Improvements in TemperatuI'e- Controlling Apparatus,'ot which the following is a specification.v

My invention relates to means f0rcontrolling the temperature of air entering a carbureter for the production of the mixture required forinternal combustion engines in accordance with the extent or throttle 0pen- 111%. H; I I

i in carrying out my invention I provlde means to admit heated or cold air to the earbureter in conjunction withv means cooperative with the carburetor throttle adapted to prevent the admission of cold air and admitheated'air only to the carbureter during the first portion of the movement of the throttle relatively to its closed position, and to prevent the admission of heated air and permit the admission of cold air only to the, carbureter during the last portion of the movement of the throttle relatively'to itsfully open position, and to permit the admission to the carbureter 01" a mixture of heated and cold air-,whe'n the throttle is in position between such extremes.

iediat'e running and to deliver cold, air to thecarbureter for h1gh speed work of the engine, whereby to effect smooth running atall engine speeds, enabling the use of lowgrade fuel when desired.

My invention further COIHPZlSGS novel details of improvement and combinations of parts that will be more fully herelnaiter set a pipe 11. jl have shown the seats 9 and 14 Earth and then pointed out inthe claims.

Reference is to be had to the accompanying drawings forming part-hereof wherein Figure l is aside elevation illustrating my improvements applied in connection simultaneously In the arrangement Cll'S- with aninternal combustion engine;

Fig. 2 is an enlarged section on the line 2-2inFig.l;-

3 is a partly of apart ofthe mechanism shown in Fig. 1; Fig. 4 is a vertical section substantially on the line 4.-4 invFig. 1; i I v Fig. 5 is a detail of partoi Fig. l-;- I p 6 is a detail section, substantially on By means of my improvement I am enabled to deliver broken perspective viewthe line'G-[G in Fig. 7 illustrating the valve to control the flow to the carbureter';

Fig? is asection substantially on the line'7s7 of Fig.6; and, a

Fig. 8 is a detail plan view of a portion ofthe carbureter with part-of my improve? ments.

Similar numerals of reference indicate corresponding parts in the several views.

At l is indicated an internal combustion engine provided with. an exhaust manifold 2 and with ainixture intake manifold 3 connected with carbureter 4, which parts may be of any'ordinary or suitable construction. At 5is casing, or so-calledstove for heating the air forthe carbureter shown applied to the exhaust manifold 2'and which may be held thereon by screws 6 or in any suitable manner, Thecasing-or stove is'shown pro vided with means at 7, such as openings opposing manifold 2, to; admit air to the interior ofsaidcasing or stove for heating air therein by means of its thermal relation to the hotexhaust manifold, The casing 5; is provided withna port 8' having a valve seat 9 communicating with a housing or chamber 10 to which the pipe 11 is att shed, which pipe leads to the air intake of the carbureter indicated at 12, to supply air to the carbureter mixing chamber in a well known manner. Heated alr Wlll flow from the casing or stove 5 through port 8 into .fiow solel or commin 'led with heatedair.

through pipe 1-]. to the carbureter. Valve means are indicated at 15 for controlhng the flow of air through the ports 81and13 to disposed in spaced relation in such a manner that the valve means 15 may close either of said ports, but not both at once, and may permit both of saidfports to be opened In the example illustrated I provide means eo-operativebetween thethrottle and shaft 16 to permit said throttle to be opened a suitable distance from its closed position while the valve 15 is away from seat 9 and against seat 14 for admitting heated air to the carbureter and to prevent admission of. cold air to the carbureter, and to move the valve 15 with the throttle from its last named partially open position during a portion of its movement with respect to its full openposition until a desired point of opening has been reached toward its full open position, whereupon the valve 15 will close against seat 9 and prevent admission of heated air to the earbureter but'allow full admission only of cold or unheated air thereto. When the throttle is in intermediate positions the valve 15 will be in a position more or less near either the seat 14 or the seat 9 to vary the admission of heated and cold air to the carbureter, so that a mixture of heated means for such purpose being as follows:

To shaft 16 is attached a resilient or spring-acting member 20, which may be in the form of a spring wire, shown attached by means of a screw 21 to a collar 22 secured by screw 28 to shaft 16, the lower end of which spring member is operatively'connected with throttle arm or handle 19 by engagement with connecting member 24, as shown having a slot 25, receiving member 29, said member 24 being shown provided with depending pins or projections 26 cooperative with the spaced members of arm 19. The pins 26 are shown located in the joints between said spaced members for r0- tation by the latter. -Member-24 is shown provided with a bore 24 looselyreceiving the lower end of shaft 16 whereby the former is guided and may have movement relatively to and independently of the latter; The valve '15 is thus adapted to be actuated with throttle 18, through the medium of the spring-member 20, when valve 15is off one of the seats 9 or 14, and the throttle may have continued movement toward closed or open position, respectively, when valve 15 is upon such seat. The space between the valve seats 9 and 14 with respect to the corresponding dimensions of valve 15 is such,

spring-member 20 will bend to permit con-- tinued closing movement of the throttle to fully closed position, and said spring-member 20 with throttle arm 19 and head 24 until valve 15 bears against seat 9 to shut. oil heated air during which time port 13 is gradually opened to admiteold outside air to casing 10 and correspondingly heated air is cut off from such casing. When valve 15 closes port 9, as stated,'heated air from the casing or stove '5 will be shut off from pipe 11 during further opening of throttle 18 thereby admitting only cold air to the carburetor. Reverse operations occur during reverse movement of the throttle, that is to say, when the throttle is moved from wide open position the spring-member 20 will retain valve 15 against seat 9 for the'previously described movement of the throttle, and when such position is reached tension of member- 20 will be relieved from valve 15 and said member will carry said valve along with the throttle causing, gradual opening of port 9 and admit heated airto casing 10 and pipe 11, while said valve gradually moves toward seat 14 to reduce the inflow of cold air to pipe 11 until valve 15 bears against seat '9, where the tension of the spring-member will hold said valve during continued closing of the throttle, thereby admitting only heated air through casing 10 andpipe 11 to the earbureter. It thus will be understood that when the throttle is only partly opened heated air only will be admitted to pipe 11, that when the throttle is correspodingly nearly wide open cold air only from the outside will be admitted to pipe 11, and that between such extremes (that is when the valve 15 is oft its seats) both heated air and cold airwill be simultaneously admitted to casing 10 and pipe 11 for the earbureter, in proportion to the distance of valve 15, from seat 9 or seat 14,

for tempering the air admitted to the carbureter.

lily improvements give the advantage of enabling heated air to be admitted to the carbureter while the engine is idling or running slowly for the production of a,

'miXture having a proper'tem'perature for economical and smooth engine operation with relatively small volume of mixture in the cylinders, and then the temperature of such air will be modified, at what may be termed the middle range of opening of the throttle, whereby increased volume of mixture is admitted to the cylinders and the temperature thereof is modified by reason of the admission of fresh cold air.com-' mingled with heated air in ratio propor tional to the positlon of the valve 15 with sion-pressure temperature therein will not be unduly increased with large or full vol.-

ume of mixture in the cylinders. In other words, by means of my improvements am enabled to cause the air entering the carbureter to have its temperature proportioned to the compression-pressure temper ature resulting from the volume of mixture in the cylinders according to work and load conditions, whereby the mixture will. not be over heated at high engine speed, thereby to prevent pro-ignition in the cylinders,

and whereby at other engine speeds the requisite temperature of the air for the mixture may be obtained to produce smooth and economical engine operation.

One of the advantages of the construction shown respecting the detachable connection between shaft 16 and the throttle isthat the carbureter may be disconnected from shaft 16 without disturbing the latter, and shaft 16 with the casing 10, or the latter with casing 5, may be disconnected from the carbureter without disturbing the latter. the application to existing engine and carbureter installations of my invention with-' 16 as well as the coincident rotation of the two.

While valve 15 is shown in a single piece of material having faces to co-operate with seats 9 and 14, it will be understood that the same may be made in two separate parts attached to shaft 16.

My invention is not limited to the details of construction and arrangement of parts set forth as they may be changed and modified within the scope of the appended claims without departing from the spirit of my invention.

Having thus described my invention, what I claim and desire to secure by Let ters Patent is 1. The combination of a carbureter having a throttle and means to supply heated air and cold air to the carbureter, with means co-operative with the throttle and with respect to said air-supply means permitting heated air only to be admitted to the carbureter during a certain portion of the throttle movement and permitting com- -mingling of cold air withthe heated air The construction described enables' durin a farther or'tion of thethrottle b movement.

2. .The combination mg a throttle and means for supplying heated air and cold air to the carbureter I w u with means co-operative with the throttle and w th respect to said airesupply means permitting heated air only to be admltted to the carbureter during a certain aortion of the throttle movement adjacent to its. closed position and permitting the ilClIJJlS- sion of cold air only to the carbureter during approximately wide open position of the throttle.

The combination of a carhureter having a throttle and means to supply heated air and cold air to the carbureter, with valve means to control the admission of heated and cold air to the carburetor, and means (Jo-operative between said valve means and said throttle to cause the admission to the carbureter of heated air only, during a portion of the movement of the throttle and cold air only during another portion of the movement of the throttle and permitting the admission to the carbureter of cold and hot air during a different por tion of the movement of the throttle.

4;. The combination of a carbureter having a throttle, means to supply heated air and cold air to the carbureter, ports respectively to ad mit heated and cold air to the carbureter, valve means to control said ports adapted to permit one port only to be open at a time or both ports open simultaneously, and means cc-operative withthe throttle and said valve means permitting the latter to close one or the other of said ports durof a carbureter hav-z' ing a portion of the movement of the throttle and to permit both of said ports to be open during another portion of the adapted to permit one port only to be open at a time or both ports open simultaneously, and resilient means co-operativewith the throttle and said valve means to cause the latter to operate with the throttle during certain portions of its movement and to cause said valve means to close one or the other of said ports during different movements of said throttle 'to admit heated or cold air only to the carbureter duringone or the other of. the last named movements of the throttle.

6. The combination of a carbureter having a throttle and means to supply heated air and cold air to the carbureter with valve means to control the admission of heated and cold air to the carbureter, a shaft for operating her connected with said shaft, and means operatively connecting said spring-acting member with the throttle to cause movement of the shaft with the throttle and to permit independent movement of the throttle when the valve means closes the admission of heated or'cold air to the carbureter.

7. The combination of a carbureter having a throttle, means to supply heated air and cold air to the carbureter, ports respectively to admit heated and cold air to the carbureter, valve means to control said ports adapted to permit one port only to be open at a time or both ports open simultaneously, a shaft for operating said valve means, a spring-rating member connected with said shaft, a connecting member co=operative with said shaft and with said spring-acting member, and means to connect said connecting member with the throttle for causing operation of said shaft by the spring. memher the latter being adapted to permit the throttle to move when the valve means closes one or the other of said ports.

8. The combination of a carbureter ha ing athrottle, means to supply heated air and cold air to the carbureter, ports respect tively to admit heated and cold air to the carbureter, valve means to control said ports adapted to permit one port only to be open at a time or both ports open simultaneously, a shaft for operating. said valve means, a spring-acting member connected with said shaft, a connecting member having a bore loosely receiving said shaft and having means co-operative with said spring mem her, said connecting member having means to be detachably connected with the throttle 'Whereby the throttle may move said valve means for a distanceto cause the latter to co-operate with one or the other of said ports and whereby said spring'means will permit independent movement of the throttle when the valve means closes one of said ports;

9. The combination of an internal combustion engine having exhaust and inlet mit the latter'to open one of said ports at a time.

10. The combination of an internal combustion engine having exhaust and inlet manifolds, an air heating casing in thermal relation to said exhaust manifold, a housing having a port communicating with said casing and a port communicating with atmospheric air, valve means in said housing adapted to close one or the other of said ports only at one time, and a carbureter communicating with the intake manifold, said carbureter having a throttle, and resilient-acting means connecting the throttle with. the valve means to permit the throttle to have continued movement after the valve means closes one of saidports.

11. The combination of an internal combustion engine having exhaust and inlet manifolds, an air heating casing in thermal relation to said exhaust manifold, a housing on said casing having a port leading to atmosphere and a port spaced from the first Ira-med port communicating with said casin a valve operative between said ports to close either port without closing the other port, a

carbureter communicating with the inlet manifold and with said housing, said carburete'r having a throttle, and resilient acting means connecting the throttle with the valve to move the latter with the throttle and permit the throttle to continue to move independently of the valve after the latter has closed one of said ports, said resilient acting aneans maintaining said valve in the 12. The combination of a carbureter having a throttle, a-casi-ng to'supply heated air for the carbureter, a housing associated with the casing, a port providing communication between the housing and casing, the casing having a port spaced from the first named port, a valve between said ports to close one of said ports only at one time, a conduit con.- necting the carbureter with said' housing, and means cooperating between the throttle and said valve for operating the valve with the throttle, and comprising means to permit the throttle to move independentl of the valve when the latter closes one o the said ports.

Signed at New York in' the county of New York and State of New York this 30th day of April A. D. 1919.

ERNEST'VV. GRAEF.

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