Improvements in the Mixing of Air with the Fuel Vapours of Gas or Oil Engines.
Year: 1898

page_text: Date of Application, 29th Apr., 1898-Accepted, 25th June, 1898
COMPLETE SPECIFICATION.
Improvements in the Mixing of Air with the Fuel Vapours of Gas or
Oil Engines.
I, OSCAR BRUNLER, of Eilenburg, Germany, Maker of all kinds of Machinery,
do hereby declare the nature of my invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the follow-
ing statement:
I have invented certain new and useful improvements in the mixing of com-
pressed air with the fuel vapours of gas or oil engines and I do declare the follow-
ing to be a full, clear and exact description of the invention, such as will enable
others skilled in the art to which it appertains to make and use the same, reference
being had to the accompanying sheet of drawings, and to the letters of reference
marked thereon, which form a part of this specification.
My invention relates to that class of engines providing their power by the slow
combustion of a mixture of gas or oil vapours and compressed air and it has for
its object to regulate the combustion of this combustible mixture in such a way as
to vary the temperature of the burning mixture to a considerable degree.
In order to make my invention more readily understood, I have illustrated it
on the accompanying sheet of drawings, which shows two ways of carrying out my
invention.
Within the igniting chamber e an approximately conical, hollow body fis
arranged, being provided with a number of holes or apertures f¹. Between this
body and the wall of the chamber e an annular space i is formed.
Into this annular space compressed air and the fuel vapour is pressed, the
pipe c for the introduction of the compressed air being situated nearer towards
the opening of the igniting chamber into the cylinder A, than the pipe d for the
introduction of the fuel vapour. A part of the introduced air will now take its
way directly into the cylinder, passing through the holes f¹ and only part of the air
will mix itself with the fuel vapour, before ignition takes place.
Somewhere between the opening of pipes & and c into the annular space a point
will be found, where there will be neither excess nor want of fuel vapour and the
mixture will have the desired proportions to allow of ignition. In this way it is
possible to introduce into the cylinder quite an excess of compressed air without
influencing the ignition in any way.
During the progress of the burning gases towards the cylinder more and more
air will be introduced into the flame and the temperature of the latter will conse-
quently be lowered, without the once set up combustion being affected.
In Fig. 2 a somewhat modified form of the described arrangement is shown.
The pipe c, for the introduction of the compressed air is divided into two branch
pipes c¹, 2, the former of which is arranged near the opening of the igniting
chamber and the latter of which is situated about opposite to the pipe d for intro-
lucing the fuel vapour.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what I
claim is:
1. In combination a cylinder A, the igniting chamber e, the hollow body f,
having holes f¹ provided, and being arranged within the said chamber e, so as to
form an annular space i, the pipe c for the introduction of compressed air into the
said annular space, being arranged near the opening of the igniting chamber into
the cylinder, and the pipe d for the introduction of the fuel vapour into the said
annular space, being situated near the closed end of said igniting chamber, as
described.
2. In combination a cylinder A, the igniting chamber e, the hollow body f,
having holes provided and being arranged within the said chamber e, so as to form
the annular space i, the pipe c for the introduction of compressed air into the said
annular space, being divided into the branch pipes c¹, 3, the former of which is
arranged near the open end of the igniting chamber and the latter of which is
arranged near the closed end of said igniting chamber, and the pipe d for the
introduction of the fuel vapour into the said annular space, being also situated
near the closed end, of said igniting chamber, substantially as described.
Dated this First day of April 1898.