US1768136A - Internal-combustion engine - Google Patents

Description

Junen24, 1930. A, MQORHOUSE 1,768,136

INTERNAL COMBUSTION ENGINE 'FledMay 14, 1926 ATroRNEY/ Patented June 24, 1930 unirse stares ALFRED IMOORHOUSE, or DETROIT, MICHEGAM Assrenon To PACKARD Moron CAB PATENT Feier.

COMPANY, OF DETROIT, MICHIGATL A CORPORATION OF MICHIGAN '.INTERNeL-connsfrron ENGINE Applicationv filed 14,

:T his invention relates to internal combustion engines, and more particularly to means Jfor .conducting the explosive mixture from the carburetor to the combustion cylinders. Itis common practice in the art to provide a 'conduit leading 'from the carburetor to a-manitold chamber, .vhich'connects With a plurality of combustion cylinders located (one or, more) on either side of the point where the conduit connects with the manifold chai'nber. Such manifolds are known as Y manifolds. Even with the best carburetor mixtures, there are particles orl the hydrocarbon that remain in the form of small drops of liquid and, because of the draft ot the liquid to one side or the other or" the point where the conducting conduit connects with the manifold chamber, the heavier drops of liquid Will iinpinge upon and cling to one side ot the conduit near its entrance to said chamber when one cylinder is being charged, and When the cylinder on the other side is being charged, the-se drops are drawn off, resulting in a variation in the richness of the mixture that is received by the cylinders on opposite sides oi the entrance of the conduit to the manifold chamber.

The object of the present invention is to vmore nearly equalize the richness of the mixture supplied to the cylinders on opposite sides of the entrance of the conduit into the manifold chamber. lVith this object in view, means are provided whereby the current of mixture proceeding from the carburetor is divided into two streams, to the end that the mass of larger molecules of hydrocarbon may be divided and be more uniformly distributed to the cylinders on each side of the entrance to the manifold chamber.

The inventive ioea is capable oit receiving a variety oi mechanism expressions, onev of which is shown in the accompanying` drawings, in Whichy Fig. 1 is a diagrammatic showing of a cylinder block of an eight-cylinder hydrocarbon engine, said ligure being on the line 1-1 of Fig. 2;

1926. Serial No. 109,125.

Fig. 2 is a sectional view on the line 2-2 of Fig. 1; and

Fig. 3 is a diagrammatic brolren detail showing another form which the invention may assume.v

In said drawings, in which like reference numerals indicate like parts throughout the several views, is a cylinder block` with any suitable number of cylinders, vhere shownk as eight, numbered respectively from 1 to S. Leading from the carburetor 11, of any suitable design, is a passage 12 in which is located the throttle valve 12 of any suitable type. Leading 'directly from the passage 12 is a two-branch conduit 13-13, the branches of which connect with manifold chambers 14, lt, respectively. y These branches take a bend before entering the chambers, and from the points Where the conduit branches 1.23, 13, connect With the manifold chambers, there are provided in Wardly extending partitions 15, 15".- These partitions extend preferably from` side to.

side of the conduit and inwardly along the bend of the same, preferably tothe point Where the current of the carburetor mixture` is passing in a straight and direct `line through the conduit branches 13, 13, as will be readily,understood from an inspection of Fig. 1. The inner ends 16, 1G of these partitions 15, 15 may, if desired, be spaced nearer one Wall of the conduit 13,13 than to the other, as shown. in Fig. 1, or, ifdesired, may be spaced midway between the..

Walls of the conduit. as shown at 16 in Fig. 1 1, the column of tluid passing through the In the construction shown in Fig.

conduit would be unevenly divided, Whereas l in the form shown in Fig. 3 the same Would be vdivided into approximately equal parts.

Inl operation, it Will be understood that the mixture', coming up from the carburetor at the point 12, branches, and part .of vit goes toward the front four cylinders and part of it toward the rear four cylinders. lVlien this mixture, Which usually has more or lessv liquid particles in it, reaches the bend of the branches, the heavier ends of the mixture hug the outer Wall so that, when the mixture reaches the manifold chambers V11, 111', the heavier particles impinge upon and are inclined to cling to the right-hand wall of the conduit 13 or ythe left-hand wall of the conduit 13 if the partitions 15, 15, respectively, are absent. When the mixture reaches the manifold chamber, if one of the intake valves, say for the cylinder 5 or G, is open, the mixture will be drawn toward that cylinder, and since most of the heavier particles are on the right-hand side of the end of the intake conduit, the lighter par-V ticles will be drawn toward that cylinder. Then, when the intake valve of cylinder 7 or 8 opens, the mixture will be drawn across the point or edge 17 where the conduit connects with the manifold chamber, and the heavier mixture will therefore be drawn intov that cylinder.

By placing the partitions 15, 15", however, in the bends of the conduit,'with the inner ends leading to the straight or right line of the conduit, the mixture traveling lengthwiseV of the conduit is divided into two -streams at the points 16, 16', and the result will be that a part of the heavier ends of the mixture will cling to the side 18 of the partition when the valve of cylinder 5 or 6 is open, and the air drawn across the ex' treme inner end or edge of the partition, where the saine joins the manifold chamber, will pull off the heavier particles of fuel that have been clinging to the inside of the partition. This will tend to carry more of *the heavier particles toward the cylinder 5 and 6, with the result that the richness of the mixture going, say, to cylinderl 5, or 6,

- will approximately equal the richness of the mixture going to cylinder 7 or 8.*

It will be understood that the invention is not limited tothe exact form and propor l tion of parts shown and that the same may be varied within a Wide range without departing from the spirit of the invention, the

'limits of which are defined in the appended claims. p

' What is claimed is 1. In an internal combustion engine, a carburetor, a plurality of motor cylinders,

"a manifold chamber communicating with lsaid cylinders,`a conduit leading from said carburetor Vand connecting said manifold j chamber at a point between said cylinders,

said conduit lhaving a bend or curve adja- 'cent the point where it communicates with the manifold chamber, and a partition in said/conduit 'extending from said manifold chamber wtoward said carburetor past the' bend thereof, the end of said partition nearest the carburetor being unevenly spaced between the walls of said conduit.

2. In an internal combustion engine, a

carburetor, a series of motor cylinders, a. manifold chamber extending along said series of chambers, a vconduit leading from the carburetor to said chamber, said conduit having an elbow or curved portion ad]acent the point where the conduit enters said chamber, a partition in said conduit termi-l nating at the point' where the conduit connects with the chamber, and valved ports leadingfrom said chamber to said cylinders,

one for each cylinder, said ports being los cated to draw the mixture across the mouth f conduit when the valves said chamber to said cylinders, one port forV each cylinder, a conduit leading from the carburetor to said chamber, said conduit having an elbow or curved portionadjacent the point where it connects, with said chamber, and a partition in said conduit terminating at the point where said conduit enters said chamber. I Y

In testimony whereof I khave signed this specification.

ALFRED MOORHOUSE.

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