US1542301A - Vapor-supply apparatus for fuel charges of internal-combustion engines - Google Patents

Description

1,542,301 P. L. JONES VAPOR SUPPLY APPARATUS FOR FUEL CHARGES: OF INTERNAL COMBUSTION ENGINES June 16, 1925;

Filed Nov. 2, 1923 I iir/vewzor: P87?!) L.Jo Ewes,

Patented June 16, 1925.

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l'p'plication filed November 2.51923. Serial No. 672,314.

To all whom it'may co ncem': v Be .it known that I, PERCY L. JoNns, a citizen of the United States, and ares-ident of Medford, in the county of Middlesex and State of Massachusetts, have invented an Improvement in Vapor-Supply Apparatus for Fuel Charges of Internal-Combustion Engines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention aims to provide a novel and improved apparatus for supplying water vapor to the fuel charge of an internal combustion engine.

The invention will reference to the following when taken. in connection withthe accompanying drawings of one specific embodiment thereof, while its scope will be more particularly pointed out in the appended claims. 7

In the drawings:

Fig. 1 is an elevation, partly in vertical section, of a portion of a motor vehicle having an internal combustion engine equipped with a water-vapor supply apparatus exemplifying my invention;

Fig. 2 is a vertical, sectional View of a portion of the apparatus showing particu larly the upper part of the radiator and its cap; and r 1 Fig. 3 is a similar sectionalview ofthe slight modification of the construction shown in Fig. 2.

Referring to the drawings, and to the embodiment of the invention which is selected for exemplification, there is shown a portion of a motor vehicle having an internal combustion engine 4, to which, the fuel charge is supplied "by a carburetor 5, whence it is conducted by an intake 6 to the combustion chambers. inders have a water jacket 7 which communicates with a radiator 8. The radiator be best understood by presents a water reservoir having a neck 9, through which water is introduced into the cooling system. Anoverflow pipe 10' leading from the neck discharges at a convenient point therebelow, outside of the radiator. The engine and its cooling system, as thus far described, are of usual and wellknown construction.

The upper portion of the radiator con stitutes a vapor chamber,

and an extension description,

The engine cylofthis chamber is presented by a radiator cap or closure 11 screwed into the neck 9. \Vater vapor to be addedto the fuel charge is conducted fromthe vapor 'chamberwithin the radiator capby a pipe 12, which delivers the vapor into the intake manifold (3, preferably intermediate the carburetor and the combustion chambers. Herein, this pipe is provided with a valve 18, conveniently located near the operators position to control the amount of vapor supplied to the fuel charge. 7

To prevent the possibility of unvaporized water entering the inlet orifice of the vapor supplypipe, the radiator cap is pro-- vided with a restricted passage 14, between the upper portionof the vapor chamber and the water space therebelow. Herein, this passage is presented by a baffle 15 of frusto-conical form, which drains back into the water space any condensed vapor, and because ofits form and location prevents water from slopping in an upward direction to 'a' height where it could reach the inlet orifice of the vapor pipe. In the present example, the vapor pipe extends in a downward direction through the restricted passage. The pipe may lead through the radiator neck and through the upper portion of the radiator, and thence rearwardly through the rear wall thereof, as at 16, or it may be led laterally through the circumferential wall of the cap, as in Fig. 3, in which event, a flexible tube 17 may be provided for convenient detachment from the vapor pipe when the radiator cap is to be unscrewed to permit the filling of the radiator. 1

In operation, the apparatus supplies vapor to the fuel charge, thereby tending to result in an increased economy, and to reduce the accumulation of carbon deposits in the combustion chambers, without danger of unvaporized Waterreaching the engine intake and interfering with its operation.

Having thus described one embodiment of the invention, but without limiting'myself thereto, what I claim and desire by Letters Patent to secure is 1. In 'a vapor supply system for fuel charges of internal combustion engines, the combination of an engine-heated water reservoir, a filling cap therefor presenting a vapor chamber above the water space and a restricted passage within said filling cap between said vapor chamber and said water space, and a vapor pipe having its inlet orifice in said vapor chamber within said filling cap above said restricted passage.

2. The combination with a water-cooled internal combustion engine and its radiator,

of means presenting an upward extensionof the vapor space of said radiator, a vapor conduit leading from said extension to the fuel intake of said engine, and a baflie below the inlet orifice of said Vapor pipe, said baflie having an opening through which said pipe extends, and said baflie having upper and lower surfaces inclined upwardly from 15 said opening.

3. The combination with a Water-cooled internal combustion engine and its radiator, of a filling cap for the radiator presenting .a vapor chamber, a conduit communicating with said chamber for supplying vapor to the intake of the engine, and a baflie providing a restriction in said cap below the inlet of said conduit; said baflie constructed and arranged to prevent water from slopping into the conduit and to return Water of condensation to the radiator.

In testimony whereof, I have signed my name to this specification.

PERCY L. JONES.

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