US2318599A - Multiple firing x type four cycle internal combustion engine - Google Patents

Description

May 11, 1943. A. G. DAVIS 1 ,59

MULTIPLE FIRING X TYPE FOUR CYCLE INTERNALCOMBUSTLON ENGINE Filed July 16, 1940 5 F1) .1. F 3 V I/ 1 I I I. I j I a ,5; I v 10 2 12 l I I I0 12 12 12 1 11 I I b: b:

I i I J] A/u/n Gi/berf 17a W's l Patented May 1 l,' 1943 "MULTIPLE FIRING x ma FOUR CYCLE V I INTERNAL COMBUSTION Enema g Alvin Gilbert navis nm; Bach, 05.11:.

Application my 16, 1940,: Serial No. 345,179

(01. 123-55) Granted under the act of March 3, 1883, as, I

6 Claims.

amended April 30, 1928; 370 O. G. 757) necting rod bearing su The invention described herein maybe manufactured and used by or forthe Governmentfor 'govemmental purposes, without the payment to me of any royalty thereon;

This invention relates to the firing order of an X type internal combustion engine and more I particularly to a crankshaft for controllingsaid firing order. A general object of this invention is to. control the firing order of an X type ensine so that the engine is mechanically balanced at any rotative point of the crankshaft.

described; g y

' I have numbered each of the cylinders as 101- lows: in block A'ia, 2a, 8a, 4a, in block B- controls the firing order as will be more fully lb, 21); 3b, 5b, in block C'ic,,2c, etc. The im- Another object of this invention is to provide a crankshaft to control the firing order of my improved engine. 7

A further object of this invention is to provide an X type engine wherein there are but four power impulses in the two revolutions of the crankshaft which comprise one cycle of the engine. Another object of this invention is to provide an X type engine in whichone fourth of the cylinders are firedsimultaneously, said cylinders being evenly distributed in oppositely disposed blocks.

1 The various objects and features of my invention will be fully understood from the following detailed description of a preferred form' of the invention, throughout which description reference is made to the accompanying drawing in which: I

Fig. 1 is a diagrammatic longitudinal section taken on the line l-l of Fig. 3;

Fig. 2 is a similar view taken on the line 2--2 of Fig. 3; I

Fig. 3 is a transverse vertical section taken on the line I-3 of Fig. l; and

Fig. 4 is a diagrammatic perspective view of the crankshaft.

As illustrated in Fig. 3 the preferred form of my engine has four blocks A, B, C. and D arranged about a central crankshaft ill. Each block A, B, C, and D has four cylinders and pistons as illustrated in Figs; 1 and 2. The blocks A, B, C, and D are arranged at right angles *to each other about the crankshaft I0. I

The crankshaft III has nin main bearings l2, eight connecting rod bearings ii, and suitably disposed counter-weights l2, as clearly shown in Figs. 1, 2 and 3 of the drawing. Each succeeding connecting rod bearing II is in a plane at in the preceding connecting rod bearing. This positioning of the connecting rod bearings is shown at H in Fig. 4. The planes of the connecting rod bearingsare preferably spiralled in a right hand or clockwise direction as indicated by the arrow I 3 in Fig. 4. Each conproved firing order of my engine is as follows: cylinders "la; 3a, 2b, and 4b fire, then cylinders in, 4a, lbyand 3b fire, then cylinders: lc,-3c,"2d, v and 4d fire, then cylinders 20, 40, Id, and 3d fire. This completes one cycle of the engine and two revolutions of the crankshaft. I

In the light of the preceding 'firing'orde'r, it will be seen, reference being had to Figs. 1 and 2 of .the'drawing, that cylinders 2a and 4a are,

ready to fire and la and 3a to, exhaust; cylinders lb and 3b arereadytofireanid 2band4b toexhaust; cylinders 20 audio are ready for intake and lo and 30 for compression; cylinders id and are ready for intake-and 2d and 4d for compression. g f

Thus it'will be seen that four cylinders of the sixteencylinderengine illustrated are fired at one time and of stliese four twojare in one block and the other two are in the block diametrically opposite or from the first mentioned block. Where the total number of cylinders is eight or thirty-two there would still be onefourth of the cylinders firlng at one time. Onehalf of which would be in one'block and the other half in the block diametrically opposite.

, From the preceding disclosure it is readily seen that the power forcesof my improved engine are always at 180 to each other and therefore the engine is mechanically balanced at all times. This relationship of the power forces resuits in a smoother running. more powerful engine than any heretofore designed.

Having described onlytypical preferred forms and applications of my invention, I'do not wish to be limited or restricted to the specific details herein set forth, but wish to reserve to myself any variations or modification that may appear to those skilled in the art or'fall scope of the following claims.

Having described my invention, I claim: 1. An internal combustion engine comprising an eight-throwcrank shaft having adjacent throws disposed in planes normal to one another, and

having each pair of throws lying in the same plane projecting in opposite directions, four rows of radially disposed, equally spaced, regularly arranged cylinders, each cylinder provided with y I rts two connectingrods I which are in oppositely disposed blocks Aand' B, A or C and'D.-"'Ihisarrangement provides for and within the fa slidable'pistonrthe pistons-in each pair 'jecting'in opposite directions from the crank- 7 mg laterally from the'crankshaf-t and: each pair.

tween cylindersof opposing rowsihereonpa 3. An internal combustion engine comprising 7 havingadjacent V,

of opposing cylinders being connected to one of each and ignition means 1015,8801! of said cylinders, whereby to eifect simultaneous firing of onefourth of the cylinders at 180 intervals.

-, of said crank throws, and valved fuel admission 2. An internal combustion engine-comprising aneight-throwcrank shafthavlng adjacent throws disposed in'planes normal to one another and each pair ofthrows ly n in the same plane Dr shaft, each pair of throws in one plane extend.-

oi throws in the remaining planeextendingve tically fro nthe crankshaft, four rows of radially;

disposed, equa1ly spaced,;regular1y arranged cyl:

inders, each cylinder'pmvided with a slidable I piston, the piston; in each pair of opposing cyl-.

lnders being connected to one of each of said 1 crank throws, and valved fuel admission and isnition means for each said cylinders; i'whereby:

' 7 stroke,the power impulses fromsaidone-fourth oi the firing cylinders being equally-divided be- I andiznition means for'the' respective cylinders,

e sw di l fourth of the cylinders simultaneously at inter- I vals of 180. a

an eight-throw crankshaft V throws disposed in planes normal to one an.- other, the throws of. each pair lyimr'in thesame plane projecting in bl positedirections from the crankshaft. balancing-weights in connection with ,eachthrow, four rows of radially disposed, I equally spaced, Rflflarly arranged cylinders,

' each provided with aslidable piston, the pistons f in each pair of opposing; cylinders being connected'to one of each of said crank throws, and

, valved fuel admissionand ignition'meansfor each of said cylinders wherebyto'obtain simultaneou firin: of one-fourth of the cylinders at. intervalsof 180. I j

4. An internal combustion enfline comprising I a multi-throw'balanced crankshaft havin': Bd-Y riacent throws disposed in planes normal :to one another and each pair of throws lying in to 'eflect simultaneous firing at 180? intervals or one-fourth of the cylinders in a. single power extending: yertically from eachj'ofsaid crank throws, and valved fuel admission andignitlon mean for each of said cyl- "lndem whereby -r to eii'ect simultaneous firing of one-fourth; ofxthe cylinders at intervals of 180,

--hepower impulses from said one-fourth of the nring cylinders being equally divided between cylinder of opposing'rows thereof.-

I 5."An 1 internal combustion enginev eom'prising' i 'ddeight-throwi. crankshaft, each throw of said crankshaft beina' 'di'sposed ina planeism ed 9 -'from that of the r aid: throws spiralling around the crankshaft from the i 'iltial;,,to the terminal throw thereof,

preceding throw,"-the' p ne8 of fourrowsof radially disposed, equally spaced,

'- regularly arranged cylinders, each cylinder providedywithaslidable piston, and fuel-admission such a' manner as to the one- 6. An internal 'combustion .;eng ine comprising d an. eight-tlmow crankshaft each -throw of said 1 crankshaft being disposedin a plane spaced 90 from that of thepreceding throw, the planes of said throws, spiralling around the, crankshaft from .the initial to the terminal throw thereof, four. rows of radially disposed, equally spaced, regularly arranged cylinders, each cylinder provided with a slidable piston, and fuel admission andignition means for the respective cylinders,

all disposed in such a manner as to fir onei'ourth of the cylinders simultaneously at inter- Vale of 180 with the power impulses equally distributed between'the cylinders of opposing rows thereof. I i Y ALVIN GILBERT DAVIS.

I equally spaced resulajrly arranged cylinders, each cylinder provided

Images