US1486409A - Manifold - Google Patents

Description

Patented Mar. 11, 1924.

UNITED STATES FRED E. ASELTINE, F DAYTON, OHIO.

MANIFOLD.

Application led May 6,

To all whom t may concern Be it known that I, FRED E. Assmann, a citizen of the United States of Armern ica, residing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in a Manifold, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to manifolds for internal combustion engines and has special reference to the intake and exhaust manifolds of an automobile engine which may have fuel supplied thereto from the carbureter and the admission of fuel to the cylinders of the engine controlled by a throttle.

The primary object of my invention is to furnish the exhaust manifold of an internal combustion engine with the chamber in conimunication with the intake manifold and into which chamber fuel may be admitted to be heated prior to passing into the cylinders of the engine so that the fuel would be in better condition for combustion purposes particularly when starting the engine.

Another object of this invention is to interpose a by-path between the intake and exhaust manifolds of the engine for the passage of fuel against a wall of the exhaust manifold so that the fuel may be heated by conduction. The passage of fuel into the bypath is controlled by an auxiliary throttle operatively associated with the main throttle of the intake manifold so that the initial supply of fuel to the engine will be deflected into the by-path, heated and used in advance of the main supply of fuel.

A further object of this invention is to combine intake and exhaust manifolds in such a manner as to afford a fuel heating chamber, and my manifolds can be easily and quickly installed in lieu of the present type of manifolds of many well known automobiles.

The above and other objects are attained by a novel construction that will be hereinafter specilically described and then claimed and reference will now be had to the drawing wherein,

Figure 1 is a side elevation of the intake and exhaust manifolds of an internal combustion engine, with the exhaust manifold partly broken away and partly in section to show a by-path or heating chamber;

Fig. 2 is a vertical sectional View of the same taken on the line II-II of Fig. 1; and

1922. Serial NO. 558,848.

Fig. 3 is a horizontal sectional view of a portion of the manifold taken on or about the line Ill`lll of Fig. 1.

In the drawing, the reference numeral 1 denotes an exhaust manifold adapted to be connected to an engine block in the usual and well known manner so that said exhaust manifold may, at times, receive exhaust gases from the cylinders of the engine, which in this particular instance may be four cyliners.

On the outer wall of the exhaust manifold 1 is a longitudinally disposed oblong enlargement or casing 2 containing a longitudinal horizontally disposed partition 3 of less length than the casing 2 so as to form a circuitous passage or by-path f1 within the casing. By reference to Fig. 2 it will be noted that the inner wall of the passage 4: is the outer wall of the manifold 1 and the exhaust of hot gases through the manifold l will cause the inner wall of the passage 4; to be heated by conduction and consequently the contents of the passage 4 may be heated.

The outer wall of the casing 2, intermediate its ends, has oblong openings 5 and 6 and communicating with said openings are similar openings 7 and 8 respectively in the rear wall ofk an intake manifold 9 mounted against the casing 2 and secured thereto by screw bolts 10 or other fastening means extending through apertured ears 11 of the manifold 9 into the wall of the casing 2. The intake manifold 9 has its upper end communicating, at times, with the cylinders or combustion chambers of an internal combustion engine and the lower end of the intake manifold is flanged, as at 12 and is connected by nut equipped bolts 13 to the flange 14 of a carbureter outlet connection 15. The carbureter outlet connection 15 contains the usual throttleor butterfly valve 16 carried by a shaft 17, journaled in walls of the outlet connection 15, and on an end of the shaft 17 is a bell crank 18. One arm of the bell crank 18 has an operating rod 19 connected thereto and the opposite end or arm of said bell crank is adapted to inipinge against a stop pin 2O carried by the outlet connection, said stop pin defining the closed position of the throttle 16. On this same arm of the bell crank is a pin 21 loosely engaging in the longitudinally slotted end 22 of a link 23 and said link has its upper end pivotally connected to one arm of a double crank 24 mounted on an auxiliary throttle shaft 25. This throttle shaft is journaled in walls of the intake manifold 9 and extends into an enlargement 26 of the partition 3, as best shown in Figs. 2 and 3. On the throttle shaft is an auxiliary throttle or butterfly valve 27 held normally closed by a Weight or counterbalance 28 on the other end of the double crank 24 and it is this end of the double crank which normally engages the stop pin 29 carried by the intake manifold 9. The articulation of the main and auxiliary throttles 16 and 27 respectively is such that the main throttle 16 may be partially opened in advance of the auxiliary throttle and assuming that there is a suction or a reduction of atmospheric pressure in the intake manifold 9, produced by the engine, fuel may be drawn past the main throttle 16, through the openings 7 and 5 into the passage t where it may travel in two directions, through the openings 6 and 8 into the intake manifold 9 and then to the engine. The auxiliary throttle 2T therefore causes the initial supply of fuel to enter the passage or by-path 4 and during its passage through the casing 2 it will be heated and placed in a better condition for combustion, thus permitting of an engine being easily started. After the engine has started and been warmed up the main throttle 16 can be thrown wide open and such adjustn'ient of the main throttle causes the auxiliary throttle 27 to be opened. Now, fuel may be drawn straight through the intake manifold 9.

It is thought thatl the utility of my invention will be apparent without further description, and while in the drawing there is illustrated a preferred embodiment of my invention it is to be understood that the struc-` tural elements are susceptible to such changes in size, shape and manner of assemblage, as fall within the scope of the appended claims.

1. The combination of an intake manifold,

an exhaust manifold, a easing carried by the outer side wall of said exhaust manifold and having its center portion communicating with said intake manifold so as to receive fuel therefrom to be heated in said casing by conduction from said exhaust manifold, and an auxiliary throttle at the central portion of said casingv and in said intake manifold adapted to cause fuel to pass into said casing.

2. The combination set forth in claim 1, and a partition longitudinally of said easing providing a by-path therein having for one of its walls a wall of the exhaust manifold, said partition causing fuel to travel to the ends of said casing before returning to said intake manifold.

rlhe combination called for in claim 1, and a main throttle laterally articulated with said auxiliary7 throttle and adapted to be opened in advance of the auxilia y throttle.

l. The combination of an intake manifold, throttles therein adapted for movement one in advance of the other, an exhaust manifold, a casing carried by said exhaust manifold and communicating with said intake manifold by two openings one above the other intermediate the ends of said casing and adapted to receive fuel from said intake manifold below one of said throttles `and deliver the fuel vto said intake manifold above the same throttle, and means in said casing to cause said fuel to travel to the ends of said casing.

5. Thecombination called for in claim 4, and means maintaining said throttles normally closed, and means articulating said throttles so that one may be opened inadvance of the other.

In testimony whereof I affix my signature in presence of two witnesses.

FRED E. ASELIINE.

Witnesses:

WM. P. PAsoo, WALTER W. Binnen. i

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