US1342950A

US1342950A - Internal-combustion engine

Info

Publication number: US1342950A
Application number: US303747A
Authority: US
Inventors: Fehlmann Adolf; Hintermann Gottlieb
Original assignee: Individual
Current assignee: Individual
Priority date: 1919-06-12
Filing date: 1919-06-12
Publication date: 1920-06-08
Anticipated expiration: 1937-06-08

Description

A. FEHLMANN AND G. HINTERMANN.

INTERNAL COMBUSTION ENGINE.

APPLICATION FILED JUNE 12. I919.

Patented June 8, 1920.

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d m n .n a m ,MM m WM 0 *4 ADOBE FEHLMANN AND GGT'I'LIEB HINTERMANN, 0F BASED, SWITZERLAND.

INTERNAL-COMBUSTION ENGINE.

intense.

Application filed June 12,

To all whom it may concern Be it known that we, ADoLF FEHLMANN and Go'rrLmn HINTERMANN, both citizens of the Swiss Republic, and residents of Basel, Switzerland, have invented new and useful Improvements in Internal-Combustion En gines, of which the following is a full, clear, and exact specification.

This invention relates to internal combustion engines and particularly to explosion engines and has for its object a method of, and means for, driving such engines, by taroils, Diesel oils, and similar liquid fuels of high boiling point.

According to the invention the method consists in vaporizing the liquid fuel outside the engine and mixing it with preheated air, in order to form therewith a mixture suitable for supply to an explosion engine. The apparatus for carrying it out consists in that an air pipe which is furnished with a preheating jacket and with a regulating valve is provided with a branch 'pipe communicating therewith on both sides of said regulating valve and inclosing a fuel supply nozzle and is further connected to a vaporizing chamber designated to be heated by exhaust gases of the motor and inclosing a deflector in the form of a cap or thimble, freely accessible on the inside to the hot ex-. haust gases and forming with the heated side wall of the vaporizing chamber a circulation channel heated from inside and outside for the combustible mixture to the end of complete vaporization of the fuel.

The accompanying drawing shows one form of apparatus embodying the invention.

In the said drawing:

Figure 1 is a vertical longitudinal section of the apparatus.

Fig. 2 is a partial transverse section on the line AB of Fig. 1. a

An air-pipe a (Fig. 1) which is surrounded by a preheating jacket 7) serves to supply the combustion air and contains a regulating slide valve 0 which can be adjusted at will and according to running requirements by means of a hand operated lever system not shown, so as to close or throttle the air pipe at according to the running requirements. The air pipe at is further provided with a permanently open branch pipe a l communicating therewith on both sides of said regulating valve 0 and in- Specification of Eetters Patent.

i919. Serial No. 303,747.

closlng a liquid fuel supply nozzle 7 insuch an arrangement that the air current circulating through the branch pipe d draws in the fuel from the nozzle f, to which it is supplied from a float vessel, and carries it along with it into the main pipe at. The latter is connected to a vaporizing chamber 9 heated by the hot exhaust gases of the motor. This chamher 9 incloses a heating deflector h in the form of a cap or thimble, into which extends upward a vertical tube 71 connectedto the exhaust side of the motor, so that in running servlce the cap or thimble h on its inside is subgected to the heating action of the exhaust gases. From the cap or thimble h the exhaust gases are conveyed at the lower end thereof into a casing is inclosing the vapor- :izing chamber 9 tocirculate around the outer side wall of the latter, whereupon they enter thepreheating jacket 6 extending from the caslng k to preheat the air in the pipe at. The exhaust gases, the heat of which has thus completely been utilized on the one hand for heating the cap or thimble h and on the other hand for heating the combustion air, escapes at m to the outer air. The cap or thimble it forms with the side wall of the vaporizing chamber 9 a circulation channel n heated from inside and outside, which, owing to a helical guide-rib 0 of the cap or thimble it, extends helically around the latter, so that the combustion mixture entering the vaporizing chamber 9 impinges first upon the strongly heated cap or thimble h and is then further exposed on a relatively long way inthe channel it to the heating action of the exhaust gases, whereupon it is drawn in by the motor through the suction tube g provided with a throttle valve p (Fig. 2). There is thus obtained a perfect vaporization of the fuel together with a convenient heating of the mixture so as to insure a complete combustion thereof.

The supply of tar-oil, Diesel oil or other similar liquid fuel of high boiling point to the fuel nozzle f is effected by a fuel supply pipe 7' through the medium of a three-way cock .9 arranged in advance of said nozzle.

Patented June 8, 192% For starting the motor, the three-way cock 8 of the nozzle f and w is a closing cover at the top of the vaporizing chamber.

What we claim is:

1. An apparatus for driving explosion engines bytar-oils, Diesel oils and similar liquid fuels of high boiling point, comprising a vaporizing chamber, means for heating the same by means of exhaust gases of the engine, a cap or'thimble arranged within said vaporizing chamber forming a circula= tion channel with the side. wall thereof, means for heating said cap or thimble from inside, an air pipe arranged to communicate with said channel in the vaporizing chamber, a preheating jacket surrounding said air pipe and designated to be supplied by exhaust gases, a regulating valve in said air pipe, a branch pipe connected therewith on both sides of the regulating valve and a fuelnozzle arranged in'thesaid branch pipe, for the purpose of conveying a mixture of fuel and preheated air through said circulation channel heated from inside and outside, substantially as described.

2. 'An apparatus for driving explosion en-- gines by tar-oils, Diesel oils .and similar liquid fuels of high boilingpoint, comprising a vaporizing chamber, a casing inclosing said chamber for heating the same from outside, a cap or. thimble arranged within the vaporizing chamber forming a circulation channel with the side wall thereof, means for heating said cap or thimble from inside by means of exhaust gases of the engine, said cap or thimble having its lower end in communication with said casing, an air pipe arranged to communicate with said circulation channel in the vaporizing chamher, a preheating jacket surrounding said air pipe .and extending from said casing, a regulating valve in said air pipe, a branch pipe connected therewith on both sides of the regulating valve and a fuel nozzle arranged in the said branch pipe, for the purpose of conveying a mixture of fuel and preheated air through said circulation channel heated from inside and outside, substantially as described.

3. An apparatus for driving explosion engines by tar-oils, Diesel oils and similar liquid fuels of high boiling. point comprissaid casing, an air pipe arranged to communicate with said circulation channel in the vaporizing chamber, a preheating jacket surrounding said air pipe and extending from said casing, a regulating valve in said air pipe, a branch pipe connected therewith on both sides of the regulating valve and a fuel nozzle arranged in the said branch pipe, for the purpose of conveying a mixture of fuel and preheated air through said circulation channel heated from inside and outside, substantially as described.

4. ,An apparatus for driving explosion engines by tar-oils, Diesel oils and similar liquid fuels of high boiling point, comprising a vaporizing chamber, means forheating the same by means of exhaust gases of the engine, a cap or thimble arranged within said vaporizing chamber forming a circulation channel with the side wall thereof, means for heating said cap or thimble from inside, an air pipe arranged to communicate with said channel in the vaporizing chamber, a preheating jacket surrounding said air pipe and designated to be supplied by exhaust gases, a regulating valve in said air pipe, a branch pipe connected therewith on both sides of the regulating valve and a fuel nozzle arranged in the said branch pipe, said nozzle being connected through the medium of a three-way cock with a supply pipe for running service fuel and with a supply pipe for a starting fuel, substantially as described.

In .witness whereof we have hereunto signed our names this 8th day of May, 1919, in the presence of two subscribing witnesses. ADOLF F EHLMANN. I GO'ITLIEB HINTERMANN. Witnesses:

ALFRED D. MASON, AMAND BRAUN.