US975796A

US975796A - Internal-combustion engine.

Info

Publication number: US975796A
Application number: US50520309A
Authority: US
Inventors: Carlton R Radcliffe
Original assignee: SCIENT RES CO
Current assignee: SCIENTIFIC RESEARCH Co; SCIENT RES CO
Priority date: 1909-06-30
Filing date: 1909-06-30
Publication date: 1910-11-15
Anticipated expiration: 1927-11-15

Description

. @En sana-us natuur serieu.

- Cameron n. nancrrrrn, or new Ylonx, N. Y., Ass'ienon uornu SCIENTIFIC ansmacnco., or new Yoan, n. Y., a CORPORATION or new Yoan INTERNALlCOMBUSTION ENGINE.

atadas.'

Specification of LttersP-atent.

atenten uw. is, icio.

' ap'pncation sied June so, 1909. y serial No. 505,203."

To all whom 'it may concern.:

ne it known that i, emma n. RAD- 1 einen, a citizen of the UnitedStates, and

resident of the city of New York, in thel coiinty of N e'w' York and State of New l York, have invented certain new and useful Improvements in Internal-Combustion En` gines, o f which the following is a specification. Y

The present ilventiou relates'to .impro-ve ments in intern l combustion en inw', into the combustion chambers of whic 1s' intro- -duced either a liquid or gaseous fuel or' comhustible, and mixed therein with'a supply of gir 1to produce 'a complete combusti'ounf the ue i Heretofore there have been' used variable stroke pum for injecting theliquid fuel into the ic inders of the engine, and more particular ygan individual pump for eachy cylinder of the engine. As the strokeL of' these pumps is only a very small fraction of adjust the stroke in order to vary t an inch, it is' almost impossible to properly e quan- 4titof the fuel to be injected.

ne off the'objects of the present invention is to obviate the defect, mentioned, of the devices heretofore in use, and to provide a single means` for controlling thequality and the flow of theffuel to'all of the cylinders of the engine. f

' A further olijectis to provide le lmeans for controlling the quantity of e liquid orzgaseous 35 L.()ther objects-ofthe invention will be ape 'f.; pareniromla readingl of the specification, and an examination of the drawings, .formt-hecylinders ofthe en 'ne.

ing part of theJv present application for Lei- A.ters Patent;

v To attain 4these ends,` theinvention' consists, essentially, the combination and :irrangement with an internal' combustion -engine of a suitable mixing chamber, whenein' a predetermined quantity of liquid fuel .or

in other words, liquid hydrocarbon, is -mix'ed with air enough tocarry the hydrocarbonin a. vaporized' or partially vaporized "state to the cylinders V of .the engine; 'this migringY chamber is combined with u single means; controlling the flow- ,of the overrich'com -A bu'stible mixture to the .said cylinders.; "1,-,

i The invention is illustrated inthe accom- 1 panving draw1ngs,in whichf i Figure 1 is a sectionalelcvatio'n-of an inhydr'ocarbon injected int'o,

vention, Fig. 2, shows a diagrammatic arrangement of the invention, Fig. 3 a vertical section taken through one of the cylinders of the engine, Fig. 4 a detail of construction land Fig. 5 a section taken on line 5, 5 oi Fig. 4.

In the drawings'the'numeral 6 indicates the Cylinders of the engine, which may be of any desired number and working chambers of lthe same. For this ternal combustion-engineemhodying the inl type ln the particular case illustrated, douh e diameter is, upon the upstroke, transferred intothe purpose a com 'niomtransfer passage 15 1is nrovided, to which lead sunnly pines 16. This transfer passage comprises for each distributing chamber 21. :A snp ly valve 19 and a transfer valve 2O isi-provi tween the atmosphere and thefpump cylindersund the pumpr chambers, respectively.

Iii/operation, a valve 19 is lifted seat on the down stroke of its corresponding piston, whereby airis drawn through'the pipe 16 and passage 17 intothe corresponding pump cylinder, 'which is then forced upon the up 'stroke of the piston,

2l, whereffrom it will How into aworkng chamber when its`correspondiiiginlet Y2 is piston.

The mechanism, thus far described. oper 'ates in a well known manner, and does not form an essential part of the invention, as thesamecould be used in connection with 'internal combustion engines of anytype, in which pure air' is drawn and compressed.'

pipe 24 to affloat chamber 2 5, which in turn is connected to a valve casing- 26. terminata port 17 numn cylinder and ports 18 for the ed for each cylinder, controlling the communications loecylinders and working from its A 90 in lifting lthe valve 20, into the distributingchamber uncovered by the working portion 10 of the l '.AQ supply 'of liquid hydrocarbon isstored in a reservoir'23, connected by means of a ing a nozzle 27, .controlled bya needle/ valve or its equivalent. The float/29 of the float chamber is adjusted so as to close the pipe 24, leading'thereto, as soon as the level of ligkuid reachesl a height slightly below the nozzle 27mentioned.

A mixing chamber 30 is provided, which is connected by means-of a pipe 31 to a supply of fluid pressure, such as, for instance, compressed air, and into which pi e leads thefnozzle 27, hereinbefore describe This nozzle should terminate in the pipe 31, pref- -A ber itself. The

' to the mixing chamber 30, while each of the l erably, near to the mixing chamber, or thenozzle maylead into the said mixing champipe 31 is connected by means of

pipes

32 and 33 to the liquid fuel reservoir .23 and the float chamber 25, re-

spectively,so as to equalize the pressure on the liquid fuel.

j The liquid-being vaporized or partially vaporized, passes as an overrich gas mixture -from the mixing chamber 30,'into the Vdi's'tributer 34. This distributer consists of a stationary casing, supported in any suit-` ableI mannemcbncentrically with and upon the crankshaft 12, andcomprises a plurality of

valve chambers

35, 35,`equal,in number .to the number of cylinders `of the engine.'

Each val-vel casing is divided into two compartmnts 36 and 37, the communication between which is controlled by a valve 38, in

eachl casing... The compartments 37 of the valvecasings are connected by

pipes

39, 39,

compartments 36 is connected by an individualv pipe 40, yto its corresponding cyl-v inder.

I The valves are arranged in the distrbuter 34 `The valves 38 are operated by a-single ca m 41, mounted, preferably, upon a sleeve 42, shiftably arranged uponthe crankshaft 12, in the'rotation of which it participates.

at the angular distances of the cranks. and the angular position of the cam relative to the cranks is xed upon the crankshaft in 4such a' manner. that the valves will open a communication between the mixing chamber 30 and acylinder for a predetermined timev betweenfthe end of the exhaust and the point of ignition in either twoor in four-cycle engines. The communicationl remains open, as mentioned, lfor a predetermined time, de-

-pending upon the position of the cam 41 upon the crankshaft'12. The cam is shown, in'Fig. 1 ofthe drawings, as a-variable v stroke cam, the edge 41 of which is arranged in a horizontal line, whereby the valves are closed always at the same time irrespective of the position ofthe cam upon the crankshaft, while the edge 41 is tapered, lifting thereby the valves at a predetermined time, which depends upon the position of 'the' cam i uponthe crankshaft.

The supply of fluid pressuremay be car- '.ried along withthe engine, or a punip, op-

erated by the engine, may supply the same,

.ing

would be irregular.

,the engine are. preferably, placed so'that connected by means of a pipe or ipes 43 to one or more of the pump cylin ers 8,` and more particularly at or near the upper ends I o'f the same. A check valve 44, opening. toward the tank, maybe inserted in the ipes 43. Obviously upon the up stroke o the f pistons, and'after the ports 17 thereof are- .closed by said pistons, the air, stillremain -the cylinders in succession and in an order in which the cylinders are tiring. As soon as a valve is lifted from its seat, compressed air will rush into the mixing chamber and, passing by the nozzle 27, vaprize a certain quantity of liquid fuel, and carry the. same through the valve chamber and the corresponding `pipe into the correspondin cylinder. The quantity of the liquid' fue fed to a. cylinder-depends, of course, upon the angular distance o'f the cam through which the valve remains open, and be varied therefore by the setting of the variable lift cam. i Another Way to vary the quantity and quality ofthe gaseous mixture, fed to the cylinders, would be to vary by means of the needle valve the nozzle mouth 27. 'l In other words, the device described, may be provided with a fixed nozzle mouth and with a variable lift` cam, or with a needle valve and a cam which lifts the valves always through the' same angular distance, or with the combination of both devices.

It is obvious-that the pressure in the fluid- -pressure tank must be always abovetthe com? pression pressure in the cylinders of the'v en-4 gine at a point where thesupply of fuel is cut off by the valves 38 of the distributer. The charge is, preferably,injected at or near the top of th@ combustion chambers. so that when a very small amount of fuelis injected, corresponding, for instance, to a.

`throttle condition of the engine. the charge will be ycharacterized orlocalized, and -a positive ignition insured, while if the same amount of `fuel was entirely diffused throughout the working chamberkthe re-li sultant mixture would be, as a whole, too

lcan

lean or too weak to be readily ignited, 'and 'consequently the running 'of the engine The ignition plugs of the sparking points of thesame are located at ornear to the center of the characterizedl or localized injected charge.

arenas nais" mentioned hereinbefore, he invention cnf may be applied also to four cycle enginesinV which case, ofcourse, thedistributer is operated by a cam mounted upon the camshaft of such engine. 1 When used in con-v nection with a Convertible four and two l cycley engine, the'arrangement shown in Figs.

4 and 5 may be made use of, in which the numeral 45 indicates`the crank shaft of the engine, operating the cam-shaft 46 in the usual manner at the ratio of two revolutions of the crankshaft to one revolution of the camshaft. Upon the camshaft 46' is mounted a sleeve 47,`adapted to be shifted in the direction of the longitudinal axis of -said l This sleeve carries thereon a cam 48,

shaft. extending almost through the Whole length 'of the sleeve, and a cam 49, arranged at a diametrically opposite point to the cam 48,

i both

cams

48 and 49 act and extending through a distance which corresponds about to one-half the length of the cam 48. If the sleeve is shifted so that l upon the valves of the distributor, fuel will be injected into the combustioncliambers upon each up stroke of the pistons, While When the sleeve is shifted sol that only camV 48 acts upon the valves,-

fuel will be admitted upon every second up- `Ward stroke of the pistons.

It Will be observed that' themixing chamber and the distributer may be made use of` when, instead of' the liquid hydrocarbon, hydrocarbon gas is fed to Athe cylinders, which are charged with -pure air in the manner hereinbefore described. Obviously siich hydrocarbon," gas must be compressed -to a point above the pressure existing in the engine cylinders at that point of the compression stroke- Where the fuel admission ceases. In such case, of course, the float chamber and needle valve is not needed, and only a single pipe will lead from the com- -pressed hydrocarbon gas container to the mixing chamber, in which pipe may be inserted a regulating valve for obvious reasons.

. The operation of the engine in such case would be exactly the same as with liquid hydrocarbon fuel and compressed air.

What Iv claim is:

1. In an internal combustion engine, the combination-With the cylinders of 'an engine having inlets through Which pure air is supplied to the same, of a single means for -forniing an overrich mixture of air and hydrocarbon under pressure, and means common to all of the cylinders of the engine .adapted to direct the flow of said mixture to said cylinders during a predetermined time betiveen. the end of `the exhaust stroke and the point of ignition. 'i

i 2. In an internal combustion engine, the combination with the cylinders of an en- .Oine havin inlets through which pure air is supplied to the same, of a single means for forming an overrich mixture of air and .air and hydrocarbon under pressure to said mixing chamber, a communication between each cylinder and said chamber, and means adapted to control said communications'bei tween said chamber and said cylinders. 4. In an internal combustion engine, the combination With the cylinders of an engine having inlets through which pure air' i's sup'- plied to the same, or' a mixing chamber,

' means for furnishing an overrich mixtureoi air and hydrocarbon under pressure to said mixing chamber, a communication between each cylinder and said chamber, a valve in Peach communication, and means for operatl l 9d ing said valves.

5. In an internal combustion engine, thev combination With the cylinders or' anren'gine having inlets through Which pure air issupplied to the same, of a mixing chamber, means for furnishing an overrich mixture of air and hydrocarbon under pressure to said mixingV chamber, a communication between each cylinder and said chamber, a valve in each communication, and a cam for operaty ing said valves. 1

6. In an internal combustion engine, the combination With the cylinders of an engine having inlets through which pure air is supplied to the same, of a mixing chamber, means for furnishing an overrich mixture of air and hydrocarbon under pressure to said mixing chamber, a communication between -each cylinder and said chamber, a valve in each communication, and a'single means for operating said valves.

7. In an internal combustion engine, the combination with the cylinders ofan engine vhaving inlets through which pure air is supplied to the same, of a mixing chamber,

means for furnishing an overrich mixture of air and. hydrocarbon under pressure to said mixing chamber, a communication between each cylinder and said chamber, a valve in each communication, and means 'for operating said valves so as to open a` communication between each cylinder and said chamber during a predetermined time between iio' the end of the exhaust stroke and the pointof ignition in the respective cylinder.

8. In an internal combustion engine, the combination wwith the cylinders 'of an engine having inlets through which pure air is supplied to the same, of a mixing chamber,

means for furnishing an overrich mixture of air and hydrocarbon under pressure to said mixing chamber, a communication between each cylinder and said chamber, a valve in 'each communication, and a cam for operating said valves so as to open the communication between each cylinder and said chamber during a predetermined time between the end of the exhaust stroke and the point of ignition in the respective cylinder.

9. In an internal combustion engine, the combination with the cylinders oflan engine having inlets through which pure air is supplied to the same, of a mixing chamber, means for furnishing an overrich mixture of air and hydrocarbon under pressure to saidk mixing chamber, a communication between each cylinder and said chamber, a valve in each communication, and a single means for operating said valves so as to o en the communication between each cylin er and said chamber during a predetermined time beltween the end of the exhaust stroke and the point of ignition in 'the respective cylinder. 10. In an internal combustion engine, the

combination with the cylinders of an engine having inlets through which pure air is supplied t-o the same, of a mixing chamber, means for furnishing an overrich mixture of air and hydrocarbon under pressure to said mixing chamber, a communication between each cylinder and said chamber, a valve in each communication, an'd means for operating said valves so as to open the communication between each cylinder and said chamber some time between the end of the exhaust strokeand the: point ofigiiition in the respective cylinder, and means tovary the length of time during which said communications areopen.

11. In an internal combustion engine, 'the combination with the cylinders of an engine having inlets through which pure air is, supplied tothe same, of a `mixing chamber.. means for furnishing an overrich mixtureof air and hydrocarbon under pressure to said mixing chamber, a communication between each cylinder and said chamber, a valve in each communication, a-cam for :operating said valves so as to open the communication between each cylinder and said chamber some time between the end of the exhaust stroke and the point ofignition in the re spective cylinder, and means to vary the len th of time during which said communications are open.A

12. In an internal combustion engine, the

having inletsthrough which pure air is supplied tothe same, of a mixing chamber,- lmeans for furnishing an overrich mixture of air and hydrocarbon under pressure rto said mixing chamber, a communication between each cylinder and said chamber, a .valve `in each communication, a single means for operating said valves .so as to open the comchamber and i chamber some time between the end of the exhaust stroke and the point of ignitionm the respective cylinder, andv means to. vary the length of time during vwhich said communications are open.

13. In an internal combustion engine, the combination with the cylinders of an engine having inlets through whichgpure air is supplied to the same, of a mixing chamber, means for .furnishing 'an overrich mixture of air and hydrocarbon under pressure to said mixing chamber, a communicationbetween each cylinder and said chamber, a valve in each communication, and means for operating said valves so asto o en the communication between each cylin er and said chaniber some time between the end ofthe exhaust stroke and the point of ignitionin the respective cylinder, and means for varying the relative. positions between said valve operating means and valves, whereby the length of time during which the communications between said chamber and said cylinders are open is varied.

14. In an internal combustion engine, the combination with the cylinders of an engine having inlets through which pure airis sup# plied to the same, of a ymixing chamber, means for furnishino` an overrich mixture of air and hydrocarbon under pressure to said` mixing chamber, a communication between eachn cylinder and said chamber, a

valve in each communication, a cam'for operating said valve so as to open the com- 'the respective cylinder, and means for varying the relative positions between said cam and valves, whereby the length of time during which the communications between said said cylinders are open lis varied. Y

15. In an internal combustion engine, the combination with the cylinders of an engine having-inlets through which pure air is supplied to the same, of a mixing chamber, means for furnishing an-overrich mixture of air and hydrocarbon under pressure to said mixing chamber,a communication between each cylinder and said chamber, a valve in each communication, a single means for-operating said valves so as to open .the communication between each cylinder and said chamber some time between the end of the exhaust stroke and the point of ignition in the respective cylinder, and means for varying the relative positions between said valve' operating means and valves, wherebyV the lei,A th of time during whichthecommunications between said chamber and said cylinders are open is varied. A

16.1.11 an internal combustion engine.. the i combination with the cylinders of an engine munication between each cylinder and said l having inlets through which pure air sup# plied to the saine,

' having inlets through I plied to the same,

' 'oi-tatoo of a mixing chamber, a Itank containing a fluidpressure, a pipe lead- Ing :from said tank to saidmixingkchamber, acontainer for a supply'of liquid hydrocarbon, a connection leadingfrom said 'container to said pipe and terminating in a nozzle therein,

a communication between each-cylinder and said mixing chamber, a

valve each. communication, and means for operating said valves.

17. In an internal combustion engine, the

combination with the cylinders of an engine which pure air is supplied to the same, of tank containinga fluid pressure, a pipe leading :trom said tank to said mixing chamber, a container for a supply ofliquid hydrocarbon, a connection leading from said container to said pipe and terminating in anozzle therein, a communication between each cylinder and said mixing chamber, a valve in each communication, and a cam -forop.- erating said valves. s

18. in an internal combustion engine, the combination with the Ycylinders of an engine having inlets through which pure air is supof 'amim'ng chamber, a tank containing a uid pressure, a pipe leading from saidtank to vsaid mixing chamber, a container for a supply carbonha connection leading from said cona container for 'means for op'eratin tainerto said vpipegand terminating in a nozzle therein, a communication between'.

each cylinder and said mixing chamber, a valve in each communication, and a single said valves.

19. In an intern combustion engine,- the combination with the cylinders of an engine havinginlets through which pure air is supplied to the same, of a mixing chamber, a tank containing a duid pressure, a pipe leading from said tank to said mixing chamber,

a, supply of liquid hydrocarbon, a connection leading ,from saidcontainer tosaidzpipe andV terminating in anozzle therein,

a communication between each cylinder and said mixing.. chamber, a

valve in'each communication, and means for chamber during "a predetermined time be# tween the end of the exhaust .stroke and the i tainer'to said pipe and terminating in a nozoperating said valves so as to op'en the cornmunication. between each cylinder and said point ofl ignition in the respective cylinder.

,20. In an internal combustion engine, the combination with the cylinders of an engine having inlets through which pure airissupplied to the same, of a' mixing chamberLa tank containing a. fluid pressure, a pipe leading from said tank to said mixing chamber, a container for a supply of liquid hydrocarbon, a connection ending from said conzle therein, a vcoimnunication between each n. each communication, .and a cam for oper- `plied to the same,

a mixing chamber, a

oliquid hydro-V cylinder and said .mixing chamber, a valve tovopen the communilcylinder and said chamatingsaid valves so as cation between each ber' during a predetermined time betweenV of ignition in the respective cylinder.

2l. In an internal combustion engine, the

combination with the cylinders of an engine having inlets through which pure air is suptank containing a duid pressure, a pipe leading from said tank to said mixing chamber, a container for a supply of liquid hydroof a mixing chamber, a'

carbon, a coiinectionleading from said con- Y tainer to said pipe and terminating in a nozzle therein, a communication between each cylinder and said mixing chamber, a valve and a single means g 1n each communication, for operating said valvesso as to open the communication between each cylinder and said chamber duringA a predetermined time between the end of the exhaust stroke and .the point ofignition in the respectivecylinder.'

2x2. lin an internal combustion engine, the' 'a containery for asupply `of liquid hydrocarbon, a connection leading from said container to said pipe and terminating ina nozzle therein, av communication betvveen each cylinder and said mixing chamber, a valve yin each communication, means .for operating said valve, and` means for. adjusting the mouth of said nozzle.

loo

23. In an internal combustion engine, the i combination with the cylinders of aneu- 'gine having' inlets through which pure a'ir' is supplied to 'the same, of a mixing cham'- -ber, a tank containing a iiuid pressure, a

pipe leading from said tank to said mixin chamber, a container for a supply of liqui hydrocarbon, a connection leading from said container to' said pipe and terminating in a nozzle therein, a communication between each cylinder and said mixing chamber, a valve in each communication, a cam for operating'said valves, and means for adjusting the mouth of saidnozzle.

' 24. ln anfinternal combination with the cylinders of an engine having inlets through which pure air is supplied to the same', of a mixing chamber, af

iis

combustion engine, the i tank containing aiiuid pressure, a pipe leading from said tank to said mixing chamber,

a container for a supplynof liquid hydro- Y carbon, a connection lea from said' con- .tainer to said pipe and terminating in a noz- 21e-therein, a communication between each cylinder and said mixing chamber,- a valve in each communlcation', a single means-for operatin said valves, and means for adjusting t e mouth of said nozzle.

" ite? 25. In an .internal combustion engine, the combination with thecylinders of an enginehaving inlets through which pure air is supplied to the same, of a mixing chamber, a tank containing a fluid pressure, a pip'e lead# ing from said tank tosaid mixing cham-J ber,`a container` for a su ply of liquid hydrocarbon, a connection eading from said container to said pipev and terminating in a nozzle therein, a communication between each cylinder. and said -mixing chamber,` a valve in each communication, means .for operating said Valves so as to open the communication between each cylinder and said chamber during a predetermined time behtween the end of the exhaust stroke and the point of ignition inthe respective cylinder and means for adjusting the mouth of said nozzle. A Y

26. In an internal combustion engine, the combination with 'the cylinders of an engine having inlets through which pure air is supplied to thesame, cfa mixing chamber, a-

tank containing a fluid pressure,`a pipe leading from said tank to said mixing chamber, a container fora supply of liquid hydrocarbon, a lconnection leading from saidA container to said pipe and terminating in a nozzle therein, a communication between each cylinder and said mixing chamber, a valve in each communica-doma cam for operating saidvalves so as. to open the conimunication between each cylinder and said chamber during a predetermined time betweenthe end of the exhaust stroke and the point ofl ignition inl the respective cylinder( and ineans for adjusting Athe mouth of sai nozzle.

27..In' an internal combustion engine, the combination with the cylinders of an engine having inlets through which pure air is supplied to the same, of a mixing chamber, a

l tank containing a fluid pressure, a pi 'e lead-1 ing from said tank to said mixing c amber, a' container for a su ply of liquidhydrocarbon, a connection eading from said container to said pipe and terminating in a nozzle therein, a `communication between each 'cylinder and said mixing chamber, a valve ineach communication, a singlel means for operating saidvalves so as too env the communication' between each cylin erfand said chamber during a predetermined time betweenthe end of the exhaust stroke' and the point of ignition in the respective cylinde r, and means for adjusting the mouth of said nozzle.

. L 28..Inl internal combustion'e'iigine, the coinbinationl with the cylinders of an engine inlets through `hich vpure .air is snpplied to the same, of mixing chamber, a' tankv containing a Huid leading from said tank to said mixing chainbei', a container for a suppl of liquid hy' droarbon, al connection' lea ing from-said '65 container to said pipe and terminating in a valv'e in each communication, means of said ressure, a pipe nozzle therein,l v'a I' communication between each cylinder and said mixingchamber, a

valve in veach communication, ymeans for operatingsaid valves, and a needle-valve for regulating the' mouth of ysaid nozzle.

29. In an internal combustion engine, the combination with the cylinders of an .engine having-inlets through which pure air is'supplied to the saine, of a mixing chamber, a tank containing a fluid pressure, a pipe lead--v ing-troml said tank to Said Vmixing chamber,

a container for a' supply. of liquid hydrocar- 4 boii, a connection leading from said con? tainer to said pipeandterminating in a nozzle therein, a communication between each cylinder and said mixing chamber, a valve in each communication, acam for operating said valves, and a needle-valve for regulating the mouth of saidnozzle.

' 30. In an internal combustion engine, the combination with the cylinders of an engine .having inlets through which pure airis supplied to the saine, of a mixing chamber,

a tank containing a uid pressure, a pipe leady ing. from said tank to said mixing chamber, a. container for a supply of liquid hydrocarbon,'.a connection-leading from said container to said pipe and terminating in a nozzle therein, a communication between each cylinder and said mixing chamber, a valve in each communication, a single means 'for operatingv saidl valves, and -a' needle-l f valve for regulating the mouth of said nozzle. t f 31. In an internal combustion engine, the

combination lwith the'vv cylinders of an engine having inlets through which'pure air is supplied to the same, of a mixing chamber, a tank containing a lfluid pressure, a pipe' leading from said tank to said mixing chamber,

a container for a supply of liquid hydrocarbon, .a connection -leading from said con- .tainer to said pipe andA terminating in a nozzle therein, a vcommunication between each cylinder and said mixing chamber, a

plied to the same,of a mixing-chamber, a

tank containing-a :fluid pressure, a' pipeleading from said tank to said mixing chamber, 'a container for arsupply of liquid hydrocarbon, a connection lea ding from said container to said' pipe and terminating infa nozzle therein, a communication between each cylinderand said mixing chamber, a valve in each comm cation, a cam for operating said iio for."

iis

s having inlets through which pure air is supvalves so as to o n the communication between 'each cylin er and said chamber during a redetermined time between the end of the eX aust stroke and the point of ignition in the respective cylinder, and a needle-valve l for regulating the mouthof said nozzle.

33. In an internal combustion engine, the combination with the cylinders of an engine having inlets through which pure'air is supplied to the same, of a mixingchamber, a tank containing a fluid pressure, a pipe leading from said tank to said mixing chamber, a container for a supply of liquid hydrocarbon, a connection leading from said container to said pipe and terminating in a nozzle therein, a communication between each cylinder and said' mixing chamber, a valve in each' communication, single means for operating said valves so as to open the communication between each cylinder and said chamber during a predetermined time be v tween the end of the exhaust stroke and the vpointof i ition in the respective cylinder,

and a ne ler-valve for regulating the mouth v of said nozzle. v

combination with the cylinders of an engine having inlets through which pure air is supplied to the same, of a single means for forming an overrich mixture of air and hydrocarbon under ressure, and means adapted to direct the ow of said mixture to said cylinders during a predetermined time between the end of the exhaust stroke and the point of ignition.

35. In an internal combustion engine, the combination with the cylinders of an engine having inlets through which pure air is supplied to the same, of a single means` for .forming an overrich mixture of air and hydrocarbon under pressure, and means adapted to direct the flow of said mixture to said cylinders in an order in which the same are iiring. y

Signed at New York, in the county of New York and State of New York, this 3rd day of June, A. D. 1909. f

CARLTON R. RADCLIFFE.