Improvements in Oil Engines.
Year: 1899

page_text: PROVISIONAL SI EUITIVATION.
Improvements in Oil Engines.
I, THOMAS WILLIAM NAYLER, of Messrs. Nayler and Company, Engineers,
Hereford, Engineer, do hereby declare the nature of this invention to be as
follows:
1
My invention relates to the vapourising, mixing and ignition arrangements
of oil engines, and has for its object to provide a simple form of vapouriser
together with such an arrangement of air and oil inlets and ignition tube as
will ensure efficient vapourisation and mixing, along with regular firing of the
charge.
My invention consists in forming the vapourising chamber as a pocket in
the air inlet pipe; the partition wall therein being so placed in relation to the
air and oil admission valve that the charge is divided thereby; the part of the
charge containing most of the oil passes down one side and comes in contact with
a stepped or ribbed wall heated by an outside lamp which also heats the ignition
tube. The ignition tube enters the vapouriser opposite the point at which the
two parts of the charge again join before entering the cylinder.
The side wall of the vapourising chamber is provided with a hood as a shield
for a heating lamp.
In carrying my invention into effect according to one modification, I provide
a casting forming the vapouriser and air inlet adapted to attach directly on
to the cylinder. This vapourising chamber is formed by a partition which lies
across the air inlet in such a position that it divides the entering charge into
two portions. Into the top of this vapourising chamber I attach a casting carry-
ing the air and oil inlet valve. This valve is of a well-known construction, and
admits the oil from a small pipe communicating directly with the valve seat
so that as the valve is opened it admits both air and oil simultaneously. The
oil admission hole is placed over the division of the vapourising chamber which
is heated, the side wall of this division being formed in steps or with ribs so as
to provide surface for the oil to come in contact with when carried forward
by the air. The position of the air and oil inlet valve is such that it opens
against the top of the partition wall, ensuring the division of the charge into two
portions. The exit of the charge from the vapourising chamber into the cylinder
in this form is at right angles to the direction of the inlet. The partition wall
does not come quite down to the bottom of the vapourizing chamber but has a
space below it through which the part of the charge which has passed through
the heated passage can escape to mix with the air admitted by the main passage
as it enters the cylinder.
The ignition tube I cause to enter the vapourizer near the bottom and into
that portion near the point where the heated oil and air pass out to mix with the
main air charge.
The divided portion of the air passage forming the vapourizer I prefer to
make narrower than the main passage, so that it has side walls which are also

page_text: hoated by an exterior burner. A hood for the burner may be cast in one with
the vapourizer itself, suitable holes being provided for ventilation.
Dated this. 18th day of November 1899.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25 Cross Street, Manchester, Agents.
Improvements in Oil Engines.
I, THOMAS WILLIAM NAYLER, Engineer, of Messrs. Nayler and Co., Engineers,
Hereford, do hereby declare the nature of this invention and in what manner
the same is to be performed, to be particularly described and ascertained in and
by the following statement:-
My invention relates to the vapourising mixing, and ignition arrangements
of oil engines, and more especially those engines in which heavy oils are used,
such oils as, say, Royal Daylight Oil, and has for its object to provide a simple
form of vapouriser together with such an arrangement of air and oil inlets and
ignition tube, as will ensure efficient vapourisation and mixing, along with
regular firing of the charge.
My invention consists in forming the vapourising chamber as a pocket in the
air inlet pipe the partition wall therein being so placed in relation to the air
and oil admission valve that the charge is divided thereby, the part of the
charge containing most oil comes in contact with a stepped or ribbed wall
heated by an outside lamp which also heats the ignition tube. The ignition tube
enters the vapouriser opposite the point at which the two parts of the charge
again unite before entering the cylinder.
Referring now to the accompanying sheet of drawings which illustrate one
form of my invention.
Figure 1 is a vertical section of the vapourising chamber through the centre
of the combined air and oil inlet valve.
Figure 2 is a vertical section of the vapourising chamber and air and oil inlet
valve through the line E Fon Figure 1 looking in the direction of arrow D.
Figure 3 is a sectional plan through the line A B on Figure 1.
In carrying my invention into effect according to one modification I provide a
casting a Figures 1, 2 and 3 forming the vapouriser and air and oil inlet,
which is adapted to attach directly on to the cylinder of the oil engine at b.
This vapourising chamber is formed with a partition e which lies across the air
and oil inlet valve in such a manner that it divides the charge, on entering into
two portions. On to the top of the vapouriser I attach a casting d which con-
tains the air and oil inlet valve e. This valve is of a well known construction
and admits the oil to the vapouriser by a small pipe or passage f communicating
directly with the valve seat y so that when the valve is opened it admits both air
and oil simultaneously. The oil admission pipe or passage f is placed in such
a position over the partition c that the charge on entering is divided into two
portions the portion containing most of the oil entering the division of the
vapouriser, the other portion which is mostly air entering division k, the two
portions not uniting until they have got below the partition c which does not
reach to the bottom of the vapouriser. The outside wall of division h is heated
by a lamp and is formed with steps or ribs so as to provide a large heated
surface for the oil to come in contact with on entering the vapouriser. The

page_text: ignition tube m I cause to enter the vapouriser near the bottom, and near the
point where the heated oil and air portion of the charge mixes with the other
portion of the charge, thus ensuring at the igniter a satisfactory mixture for
combustion. I prefer to make division h narrower than division k of the
vapouriser so that division has also side walls n (seen best in Figure 3) which
are heated by lamp j. The hood of lamp may or may not form a part of the
same casting as the vapouriser but suitable holes must be provided for ventila-
tion. The passage o in Figure 3 is for ventilation. The direction of exit of the
charge from the vapouriser a into the cylinder in this modification of my
invention is at right angles to the direction of entrance of the charge by valve e.
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 oil engines, a vapourising chamber formed as a pocket in the air and oil
inlet pipe in such a way that the charge, on entering, is divided thereby sub-
stantially, as, and for the
purpose described.
2. In oil engines, a vapourising and mixing chamber in which the charge is
divided, the portion containing most oil entering one division in which it comes
in contact with a stepped or ribbed surface which is heated by an outside lamp
substantially as herein before described.
3. The combination in oil engines of a combined air and oil inlet valve with a
pocketted vapouriser substantially as, and for the purpose described.
4. The improved vapouriser herein before described with reference to the
accompanying drawings.
Dated 17th day of August 1900.
MARKS & CLERK,
18, Southampton Buildings, London, W.C.,
13, Temple Street, Birmingham, and
25 Cross Street, Manchester, Agents.