Improvements in Vaporisers and Igniters for Oil Motor Engines, partly applicable to Gas Motor Engines.
Year: 1897

page_text: Date of Application, 8th June, 1897
Complete Specification Left, 3rd Mar., 1898-Accepted, 9th Apr., 1898
PROVISIONAL SPECIFICATION.
Improvements in Vaporisers and Igniters for Oil Motor Engines,
partly applicable to Gas Motor Engines.
I, GEORGE GREENWAY HUNT, Managing Director of Grover & Company Limited,
Britannia Works, Wharf Road, London, N., do hereby declare the nature of this
invention to be as follows:-
1
This invention relates to appliances for vaporising the oil or other liquid fuel
supplied to oil motor engines and also for igniting the charge of mixed air and
vapour in the cylinder, the same means of ignition being applicable to gas motor
engines. For this purpose, at the end of the cylinder where combustion takes
place an external vaporising chamber is provided through which passes a tube
having its one end closed and its other end projecting into the cylinder. Within
this tube is a rod of refractory material which is capable of absorbing and retaining
heat, such, for example, as carbon, firebrick or ceramic material. At the top of the
vaporising chamber the combustible liquid is admitted with a certain amount of
air, the liquid being distributed in a state of sub-division over the surface of the
tube. For starting the engine, the chamber and an outside ignition tube are first
heated by a lamp placed underneath, and afterwards, when the engine is at work,
heat is conducted from the cylinder to the tube in the chamber sufficient to vaporize
the liquid, the vapour of which mixed with air is drawn into the cylinder, and,
after the usual compression, is fired by the heat of the tube end projecting into
the cylinder. The tube may communicate with the cylinder by a hole or holes at
its end in which case a portion of the cylinder charge, can enter the tube and
impinge on the refractory material or on an inner tube containing it.
A tube with refractory material as above described may be applied to the
cylinder of a gas motor engine for the purpose of igniting the charge.
Dated thin 9th dox of Tune 1897
ABEL & IMRAY,
Agents for the Applicant.
Improvements in Vaporisers and Igniters for Oil Motor Engines,
partly applicable to Gas Motor Engines.
I, GEORGE GREENWAY HUNT, Managing Director of Grover & Company Limited,
Brittania Works, Wharf Road, London, N., 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: -
This invention relates to appliances for vaporising the oil or other liquid fuel

page_text: supplied to oil motor engines and also for igniting the charge of mixed air and
vapour, in the cylinder, the same means. of ignition being applicable to gas motor
engines.
For this purpose I provide vaporising and igniting apparatus which I shall
describe referring to the accompanying drawings.
Fig. 1 is a longitudinal section, Fig. 2 is a side view Figs. 3 and 4 are transverse
sections on the lines 3-3 and 4-4 of Fig. 2 respectively. Figs. 5 and 6 are
longitudinal sections shewing modifications, and Fig. 7 is a sectional plan shewing
the invention applied to a gas engine.
In all the figures like letters denote like parts...
Referring first to Figs. 1, 2, 3 and 4 at the end of the cylinder A where combustion
takes place an external vaporising chamber B is provided in which is situated a tube C
with mouth D opening into the cylinder. Within the tube C is a tube E of thin
conducting metal enclosing a rod F of refractory material which is capable of
absorbing and retaining heat, such, for example, as carbon, fire-brick or ceramic
material. The oil or combustible liquid supplied through a valve G passes through
perforations of a tube H on to the surface of the tube C, while a certain amount
of air guided in a zig-zag course by an inlet K enters the chamber B. For the
purpose of starting, the chamber B and an external ignition tube I are first heated
by a lamp placed under them, and afterwards, when the engine is at work, the
tube receives sufficient heat to vaporise the liquid, the vapour of which mixed
with air is drawn into the cylinder through the inlet valve L. The mixture when
compressed by the back stroke of the piston is fired by the heat of the tube E
igniting the portion of the charge which is compressed within the tube C.
As shewn in Figs. 5 and 6 the tube C passes quite through the chamber B so
that access can be obtained from outside to the tube E and refractory rod F. In
the modification shewn in Fig. 6 the tube E is dispensed with, the tube C com-
municating with the cylinder through perforations of a nozzle M.
Fig. 7 shews the application of rod F and enclosing tube E in a chamber
provided at the end of the cylinder A of a gas motor engine.
I have not shewn the exhaust valve or other part of the engine which have no
connection with my invention.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed, I declare that what I
claim is:
-
1. In combination with the cylinder of an oil motor engine a vaporising chamber
and igniting tube containing a rod of refractory material, substantially as and
for the purpose set forth.
2. In combination with the cylinder of a gas motor engine an igniting tube
containing a rod of refractory material, substantially as described.
Dated this 3rd day of March 1898.
ABEL & IMRAY,
Agents for the Applicant.