US1756161A

US1756161A - Manifold

Info

Publication number: US1756161A
Application number: US743443A
Authority: US
Inventors: Earle S Macpherson
Original assignee: Hupp Motor Car Co
Current assignee: Hupp Motor Car Co
Priority date: 1924-10-13
Filing date: 1924-10-13
Publication date: 1930-04-29
Anticipated expiration: 1947-04-29

Description

E. S. MaCPHERSON April 29, 1930.

MAN I FOLD Filed Oct. 15, 1924 5 Sheets-Sheet l QN. mw. Nm. .3

April 29, 1930.

E. S. MaCPHERSON MANI FOLD Filed Oct. l5, 1924 3 Sheets-Sheet 2 April 29, 1930. E 5 MaCPHERsoN MANIFOIQD Filed Oct. 13, 1.924 3 Sheets-Sheet 3 n mm Wm. 3% m 9 ,w o s a Ww a y i ttouwgo Patented Apr. Y29, 1930 FICE y l 1 -v A 1,756,161

Y EARLE s. MAcrIIERsoN, or DETROIT, MICHIGAN, AssIGNoR To HUPP' IJIoToIt CAR Y CORPORATION, or DETROIT, MICHIGAN, A CQRIDCRATICN or yVIRGINIA MANIFOLD Application filed October 13, 17924. Serial'N. 743,443, f

The invention relates to manifolds and has lamong its objects to provide a manifold for internal combustion `engines which 1s `of simple construction. andeifective in operation. A further objectembodies a manifold and method of treating intake gases in which the intake gases are heated before introduction into the engine cylinders, yA further object is to effectively utilize-thejexhaust gases to heat the intake gases; Afurther object is to provide a combined. intake; and exhaust manifold suitable forl use with an 4-4 of Figure 1;

fold;

internal combustion engine having a plurality of -alignedcylinders Y With these and other objectsfin view, the invention resides in the novel features of construction and combinations and arran e- `vments of parts as more 'fully hereinafter 4 escribed and claimed. f y

' In the drawings which are made a part y'hereof and iny which similar reference characters indicate corresponding parts: f Figure 1 is a front elevation showing the manifold attached to an engine; Y

Figure 2 is a planview of the manifold;

' AFigure 3 isa side elevation of the mani- Figure 4'is a` sect-ion viewV along Lthe line Figure 5 is a section View of thefexhaust manifold along the lines 5 5 ofFigurefl';

' Figure 6 is asection view of the exhaust manifold along the lines 6-6' of- Figure 1; and

Figure7 is a section'view 'of the'exhaust manifold along the line.7 '-7 ofFiguref'l. A Referring to the drawings reference charvacter 1() indicates the cylinder blockv of an internal combustionengineffpreferably of thetypehaving a plurality ofealigned cylinders.

sage 12 through which the gaseous mixture is conducted from the Carburetor 13 of any suitablev type. The passage 12l extends upwardly and terminates in a T-shaped connection whereby the gases are divided lat the point A and directed in opposite directions as indicated by the arms 14 'and`15g xThey arms are curved inwardly adjacent their ends 'and' terminate inthe coupling sections d adapted to abut theface of the cylinder block v 10 for receiving the exhaust gases from the While I' have shown an internal combustion engine having eight cylinders it is obvious that .the number of cylinders might be varied without departing from thek spirit of my invention, l

The exhaust manifold is formed with arms 21 which conduct the intake gases in opposite directions from the arm 14 to the outlets 22 for distributiony to they intake ports (not shown) of the engine. The arm 15 likewise communicates with arms 2,3v terminating in outlets 24. The arms 21 and 23 are preferably cast below and integrally with the longitudinally extending exhaust passages 25 which receive the exhaust gases from passages and openingsy 19 and conduct the exhaust gases'therefromtoward the center of the casting. As shown particularlyk in Figures 5, 6 and 7 Vthe exhaust gases passing through passages are'adaptedto heat the intake gases in the arms 21 and 23; particularly at the points adjacent the exhaust passages20, 'by reason'of the dividing walls26 separating the exhaust and vintake passages forming hot spots.

As indicatedat Figure 7 a hot spot is provided at the point of division of therintake gases passing from'arms 14 and 15 to n the arms 21l and 23 respectively. y

' As shown particularly in vFigure 4 the central portion of the exhaust manifold casting `.18 is provided with a flanged portion 27 which is lsecured toa nanged portion 28of the intake manifold 11 by the "bolts 29'. The exhaust manifold is provided with a central baiiie 30 against the opposite sides of which the ex` Vexhaust passages 20 lof the cylinder block. n

from the carburetor. The hot spot is formed by the exhaust gases striking the Walls of the T-shaped connection at the point Where the direction of Vfiovv of the intake gases, from the passage 12, is changed. After impinging upon the T-connection .the exhaust gases from the passages unite and tioww'through the common exhaust pipe 31 which is prefer-I ably bolted at 32 to the exhaustinanifold casting. n

In operation theexhaust gases enter the exhaust manifold 18 through passages 2O and 19 and flow from either end along passages 25 toward the baiile at the center of theexhaust manifold casting. The bafiie 3() directs the' exhaust gases forwardly toWardthe 'i' vconnection of the intake manifold to form .thehot spotA. The exhaust-gases then pass "out through the common exhaust Vpipe 31'. vThe intake `gases from the carburetor 13 :pass through passage 12 to the T-shaped con ,gnection at the point A where-the gases are heated, as above described, and divide to pass through arms 1li and 15 to the second hot spots B. At the points B the intake gases again dividefto flovvfthrough arms 21 and 23 Vandthence to outlets 22 connecting with the inlet ports of the engine (not shown). Durf ing their passage along arms 21, 23 the tem-V perature of the intake -gases is prevented -fr-om dropping by reason of the heated Walls -26 separating the exhaust passages 25 from Y the arms 21, 23`of the intake manifold.

VIt Willbe noted that the exhaust gases uniformly heat the intake gases, the exhaust gases from half the cylinders of the engine Vheating the intake gases in the arms 21, While the gases of tlie'other half heat the intake gases in the arms 23. The exhaust gases then unite to cause hot spot A, and thereafter are exhausted together.

i While it is believed that from the forego ing description, the nature and advantages ofjmy invention Will be readily understood,

I. desire to have it understood that I do not limit myself to Whatis herein shown and described and that such changes may be resorted to When desired as fall Within the scope of what is claimed.

VVWhat I claim as "my invention is:

. 1. A manifold for internal combustion engines comprising ,an inlet passage for receiving a iiow of intake gases, means for dividing the flow of gases into'a plurality of branches, means for dividing` each of said branches into a plurality ef other branches, an outlet for said branches for communication with the engine intake, lmeans for heating said gases at each of said points of division by means of the exhaust gases con- V ducted in each case from those. cylinders Which are supplied by the intake gases passinrthe said respective peints of division, and means for heatingthe gases during their flow between the lastsaid point of division and their said points of outlet to the engine inl take While permitting them to pass from the first point of division to the second point of division Without being heated.

2. ln combination with an internal coinbustion engine having a plurality of exhaust ports, a manifold comprising an inlet passage for receiving a flow of intake gases,

means for, dividing Vthe flow into a plurality of branches, means for dividing each of said branches into-a plurality of other branches for distribution to the engine intake, means for Conveying the exhaust gases from some of said exhaust ports adjacent some of the last said branches to heat the intake gases carried thereby, means forconveying the exhaust gases from'the remainder of said ex- "haust ports adjacent otherof the second mentioned branches to heat the intake gases carried thereby, means for uniting the exhaust'V gases, baiiie for directing. the united exhaust gases adjacent .the inlet passage o'f the rintake gases for heating thein`V directly at their first-said point of division, and means for. conducting 'away the united exhaust gases 3.11? manifold for internal combustion engines comprising an inlet passage for receiving a flow of intake gases, means for dividing the flew of gasesinto a plurality of branches,

ing means also being' Yarranged to heat theY 4intake gases at each of said second points of Vdivision and at each outlet point.

4. The combination With an internal combust-ion engine, of a manifoldincluding an exhaustpassage arranged longitudinally of the engine for conducting exhaust gases from each end'of the engine toward the center thereof, v,a battle in the said exhaust passage for directing the exhaust gases through a single outlet, anaintake passage adjacent the".

single Vexhaust outlet for receiving` ay iow of intake passages, the said intake passages being divided adjacent the singlel exhaust outlet to form. a plurality of branches, the said intake' passage 'being heated by the exhaust "j Vgases in theexhaust outlet at its point of division While the branches/of the said intake Vpassage are spaced from the exhaust passage, and auxiliary branches formed from eachbranch of the vmain intake passage, the said auxiliarybranches being arranged ad jacent the exhaust passage and being adapted to be heated thereby.

5. The method of treating the intake gases Vof l,an internal'combustion engine which consists in dividing the intakeV gases, Vapplying i" .heat at the point of division, allowing the A gases to cool slightly after passing said point of division, dividing each of the divided por Y tions aforesaid and applying heat at the last'L mentioned points of division, andV to the Y ylast mentioned divided portions.

.76. A manifold for internalcombustion englnescomprising an inlet passage for receivlng a'loW of lntake gases, means for dividing the flow of gases'into a plurality of branches, i

means for dividing each of said branches deiecting the exhaust gases directly against the'said first point of division for heating the intake gases at the said point.'y

7. Thev comb'nation with an internal comy.

bustion engine, of a main conduit for supplyingy intake gases to the entire engine,`

branch conduits extending from the said main conduit and auxiliary conduits extending from the said branch conduits and connecting v into predetermined groups of cylinders,V and means for utilizing the exhaust' gases from the engine for forming a hot spot at a point intermediate the main conduit'and the first mentioned branchconduits, other hot spots at points intermediate the branch conduits and the auxiliary conduits, and still other hot spotsv atL points adjacent the outlet ends of the auxiliary conduits.

In testimony whereof I aitix my signature.

EARLE S. MACPHERSON.