US1260040A - Fuel-intake heater for engines. - Google Patents

Description

A. 5., POWELL -EUEL INTAKE HEATER FOR ENGINES.-

APPLICATION L 50 JAN. U. 1917- 1,260,040. Patented Mai'.19, 1918 INVENTOR WITNQESSES I I A ATTORNEY ABSALOM E. POWELL, 0F LAPEER, MICHIGAN.

FUEL-INTAKE nEA'rEn FOR ENGINES.

Specification of Letters Patent. I Patented lIar. 19, 1918.

Application filed. 1mm 17, 1917. Serial No. 142,931.

To all whom it may concern:

Be it known that I, ABSALOM E. POWELL, a citizen of the United States, residing at Lapeer, in the county of Lapeer and State of Michigan, have invented new and useful Improvements in Fuel-Intake Heaters for Engines, of which the following is a specification.

This invention relates to fuel intake heaters for engines of the internal combustion or explosion type, the object of the invention being to produce a heater in which the hot exhaust gases from the engine are utilized for the purpose of heating the incoming mixtureor fuel and air combined so as to raise the temperature of the combustible fuel before it is delivered to the combustion chambers of the engine, thereby effecting a material saving of fuel, producing a mixture that is more highly combustible, increasing the power efliciency of the engine, eliminating to a considerable extent the accumulationof carbon in the engine and also enabling lower grades of hydro-carbon than gasolene, such as kerosene or crude petroleum to be utilized with the same efficiency as gasolene.

A further object of the invention is to produce a heater having the qualities above referred to, the construction of which is such as to adapt it to be readily associated with internal combustion engines already in use, either taking the place of the usual exhaust manifold or being used as an adjunct to the intake manifold.

With the above and other objects in view, the invention consists in the novel construction, combination and arrangement of parts, herein described, illustrated and claimed.

In the accompanying drawing Figure 1 is a longitudinal section through a fuel intake heater embodying the present invention.

Fig. 2 is a cross section through the same taken about centrally thereof.

The fuel intake heater contemplated in this invention, comprises an outer shell 1 and an inner shell 2, said shells being preferably cylindrical or consisting of suitable pipe lengths and being arranged in concentric and spaced relation to each other.

The outer shell 1 has associated with the opposite extremities thereof headers 3 and 4, the header 4 being screwed upon the threadshown in Fig. 1.

ed end portion 5 of the inner shell 2, while the other header 3 has a sliding fit on the inner shell. Each of the headers 3 and 4 is formed with a rabbet 6 to receive the adjacent extremity of the outer shell 1 and the two headers 3 and 4 are drawn tightly against the extremities of the outer shell 1 by means of tie bolts 7 which pass through flanges 8 of the headers and are threaded to receive tightening and clamping nuts 9.

The inner shell 2 is threaded at its op 0- site ends to receive headers 10 and 11 which are screwed thereon. The header 10 is provided with a fuel or mixture inlet 12 while the header 11 is provided with a heated niixture outlet 13 from which the mixture is conducted by means of a suitable pipe (not shown) to the intake manifold of an internal combustion engine.

The header 10 is formed with a safety port let which is normally closed by a safety valve 15 held to its seat by means of a spring 16 which surrounds the valve stem 17, the latter being slidable through aU-shaped bracket or arch 18 having a fixed relation to or formed integrally with the header 10 as 19 designates a nut threaded on the steml7.

The outer shell 1 is provided with two nipples or connections 20 and 21', either of which may be used to admit the hot exhaust from the engine to the space between the outer and inner shells 1 and 2, while the other is used for carrying off the exhaust after it has circulated around the inner shell 2 in the exhaust chamber or space 22. The fresh mixture or fuel is received in the chamber 23 formed by the inner shell 2.

From the foregoing description taken in connection with the accompanying drawings it will now be understood that the fresh mixture from a carbureter (not shown) is admitted through the outlet 13 to the intake manifold of the engine. \Vhile passing through the chamber 23, the fresh mixture or fuel is heated by the hot exhaust gases circulating within the chamber 22. In case of back fire from the engine, the safety valve 15 is; displaced or unseated for an obvious purpose.

I claim s A fuel intake heater, comprising an outer shell, an inner shell in spaced and concentric relation thereto, headers for said outer shell encircling the inner shell, tie bolts connectouter shell, a safety valve connected with ing said headers, headers at the opposite one of the headers of the inner shell, and

ends of the inner shell, one formed with having an outwardly projecting stem, and a a fuel inlet and the other with a fuel outlet, guide on the last named header for said 5 an exhaust inlet connected with one of the value-stem.

headers of the outer shell, an exhaust out- In testimony whereof I aflix my signature.

let connected with the other header of the AB'SALOM E. POlVELL.

Cugklcaaofl this patent may be ubtainedfiorfive cents each, hy-addressing the Commissioner 'of Patents,

, Washington, D. 6.?

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