US1706860A - Vaporizing manifold - Google Patents

Description

March 26,1929; PETIT 1,706,860 4 VAPORI ZING MANIFOLD Filed April 22, 1927 5 Sheets-Sheet 1 f/ENR 25. F: 777' 11v VENTOR BY A TTORNEY March 26,1929. H. ,3, E 1,706,860

VAP ORI Z I NG MANIFOLD Filed April 22, 192'! s sheets-sheet 2 11v VENTOZ 4 BY I! I A TTORNEY March 26, 1929. H. B. PETIT VAPORIZING MANIFOLD Filed April 22, 1927 s Sheets-Sheet HE/vR YB 5777.

INVENTOR.

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Patented Mar. 26, 19239.

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HENRY IB. PETIT, OF DETILOIT, MICHIGAN, ASEZIGNOB TO C-i-TLORG-lil M. HOLLEY, OF

' DETROIT, IVIFJIGI-IIGAII.

V'APOLRIEING MANTFOLD.

Application filed iipril 22,

The object of this patent is to improve the heat control of a vaporizerintended to be used in conjunction with internal combustion engines. It has heretofore been found extremely diiiicult to get any adequate control of the heat. The most that could be accomplished was to vary the ultimate mixture ten perature 10 or 20 F., which is not a suificiently large dili'erence to take care of changes in the atmospheric temperature of over 100 F, which change is not at all unusual.

The specific object of this invention is to improve Vaporizers of the type shown in Patents #1: 1,562,67 O and ltl,5l7,4l7 l-, in which a rich mixture is drawn over a relatively thin metal plate surface which is heated on the other side by the exhaust gases.

Figure 1 she the manifold in elevation.

Figure 2 shows a cross sectional elevation on the plane 22 of Figure 1.

Figure 3 shows an elevation of Figure 2.

Figure 4 shows a cross sectional plan View on plane 4- l of Figure 1.

Figure 5 shows a cross sectional plan view onplane 55 of Figure 1.

Figure 6 shows a cross sectional elevation on the plane 2-2 of Figure 3, showing the upper part of the mixing chamber. This view illustrates the mixing chamber in use on Fordson tractors.

In the figures, A is the exhaust manifold, cast integral with which is the inlet manifold B. An opening O is provided in the exhaust manifold which is covered by a hollow cover C. This cover is provided with an outlet 1) which COITGSPOHLlS to the outlet 36 of the Patent $51,562,670, and through 'which a heated rich mixture is drawn into the inlet manifold of the engine through the pipe T, the rich mixture entering into the mixing chamber S through the outlet U. The mix ture outlet is controlled by the throttle valve- V and the cold air is admitted through the pipe W. An automatic valve X corresponding to the valve 39 of Welch is provided in the entrance, being diluted enroute by the addition of the main air which is unheated in the mixing chamber.

E the outlet from the exhaust manifold which is controlled by a throttle valve F. G is the exhaust bypass formed in the hollow covert). H J are two sheet steel plates clamped between theenhaust manifold A and the cover C. A partition K is provided in 1%37. Serial llo. 185,692.

exhaust to follow the path, shown by the arrows in Figure 2, when the throttle F is closed. illiquid fuel is admitted to the path between the two plates iii and J through a nozzle (not shown) 'which projects through the opening l). The nozzle is fed from. a float c amber (not shown) which is bolted to the .r G by the to} 1d, holes Q, Q. rrir for aspirating this fuel is admitted through the I tube M, which communicates with the horizontal passage N, which passage communicates with the narrow space between d and H. The passage Gr communicates through a portf? with the exhaust outlet E on ti 3 atmospheric side of the butterfly valve F, thus on closing the valve F the passage G forms an auxiliary path through which the exhau t gases can escape to the atmosphere and at intermediate position of F it forms an auxiliary path.

Operei'iora-i l hmi the engine is first started the valve F is closed, thereby causing the exhaust gases to follow the path indicated by the arrows in F igure 2. Exhaust gases therefore are diverted by the partition K-in the direction of the valve F and are then caused to back up and flow on the other side of K, past the plate J and then through G and back to the outlet F.

l/Vhcn the engine warms up the throttle F is opened gradually and the exhaust gases are thereby permitted to escape more and more directly through the outlet E. (living to the pulsating nature of the flow of the exhaust gases, liOWUVOI', the heating effect on the plates .l and H, upon the fuel passing from ll up between the plates, is never wholly elimi-' nated, because exhaust gases always back up into the passage G, for example, and also between J and K. The heating eifect of course is greatly diminished and thus an effective heat control is secured.

What I claim is l. A vaporizing manifold comprising an exhaust manifold, a partition therein, an opening}; therein opposite said partition, a cover forming a closure therefor, a vaporizing element interposed between said cover and said opening, a fuel and air entrance thereto and a vapor outlet therefrom, said cover having an exhaust bypass therethrough adaptedto heat one side of the vaporizing metal element, an exhaust outlet from the manifold, a passage through which the e):-

the exhaust manifold A which causes thehaust gases discharge from the cover to the outlet, a'valzve cooperating with said parti- 7 tion located in the exhaust outlet on the engine side of the bypass outlet and adapted in one; position to force the exhaust gases to flow on both sides of the vaporizing"element,

and adapted inianother position to permit the exhaust gases to escape directly. to the exhaust outlet. v

2. A vapor-12mg manifold comprising an exhaust man1fold,-af partition therein, an

' openin therein opposite said partition, a

cover forming a closure'therefor, avaporizing element'interposed between said cover and said opening, comprising two parallel 7 platesseparated from each, other, a fuel and air entrance thereto and a vapor outlet therefrom, said cQVer-having an exhaust, bypass to the outlet, to valve-co-operating with said partition located in the exhaust outlet on the engineside of the bypass outlet and adapted V in one position to force the exhaust gases to flow on both sides'o-f the vaporizing element,

and adapted in another position to permit the exhaust gases to escape directly to the exhaust outlet.

3. A vaporizingmanifold comprising an exhaust manifold, a partition therein, an opening therein opposite said partition, a cover forming a closure therefor, a vaporizing element interposed between said cover and said opening, comprising two thin parallel metal plates separated from each other, a fuel andair entrance thereto and a vapor outlet therefrom, said cover having an exhaust bypass theretl'irough adapted to heat one sideof the vaporizing metal element, an exhaust outlet from the manifold, a passage through which the exhaust gases discharge from the cover to the outlet, a valve eo-operating with said partition located in the exhaustoutlet on the engine side of the bypass outlet and adapted in one position to force the exhaust gases to flow on both sides of the 'apori zingelement, and adapted in another position to permit the exhaust gases to escape directly to the exhaust outlet.

In testimony whereof I aflix my signature.

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