Improvements in Gas-motor Engines.
Year: 1890

page_text: Date of Application, 10th Mar., 1890
Complete Specification Left, .10th Dec., 1890-Accepted, 17th Jan., 1891
PROVISIONAL SPECIFICATION.
[Communicated from abroad by THE GAS. MOTOREN FABRIK DEUTZ, of Köln, Deutz,
37: in the German Empire, Manufacturers.]
Improvements in Gas-motor Engines.
I, CHARLES DENTON ABEL, of No. 28, Southampton Buildings, Chancery Lane, in
the County of London, Consulting Engineer and Patent Agent, do. hereby declare the
nature of this invention to be as follows:-
This invention relates to gas motor engines working either with a cycle of four
strokes or with only two strokes, and having a compression or combustion space at
the cylinder end, in which hot gaseous products of combustion remain after each
working stroke.
When such motor engines are worked with easily inflammable gases, such as water
gas, or producer gases which contain a large proportion of hydrogen, it sometimes
occurs, more particularly in the case of larger engines, that the explosive charge
becomes prematurely ignited, immediately on its introduction into the cylinder, owing
to the heat of the residual products of combustion.
According to the present invention this defect is obviated by introducing into the
cylinder during the exhaust or discharging period a quantity either of steam or of
water spray, for the purpose of cooling down the said residuary, products before the
introduction of the next charge. The water spray is at once converted into steam,
and, as is also the case when steam is introduced, it in great part escapes through the
discharge valve with the products of combustion during the discharging stroke.
In carrying out the invention according to one arrangement, the charging and
igniting chamber of the cylinder, into which the combustible charges are admitted
through a valve, is provided with a passage leading to a small valve chamber
communicating with a supply of either steam or of water under pressure.
The valve is held closed against such pressure by a spring, and is forced open at the
required moment for admitting steam or water spray by means of a lever actuated by
acain on the engine shaft or countershaft.
whence
When using steam, this is admitted directly into the said charging chamber,
it passes into the compression space of the cylinder; when using water, the passage
admitting this is provided with a projecting perforated nozzle directed towards the
cylinder, so that the jet of water spray is projected into the cylinder.
Dated this 10th day of March, 1890.
ABEL & IMKAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Gas-motor Engines.
I, CHARLES DENTON ABEL, of No. 28, Southampton Buildings, Chancery Lane, in
the County of London, Consulting Engineer and Patent Agent, do hereby declare
the nature of this invention and in wliat manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
This invention relates to gas motor engines working either with a cycle of four
strokes or with only two strokes, and having a compression or combustion space at
the cylinder end, in which hot, gaseous products of combustion remain after each
working stroke.
When such motor engines are worked with easily inflammable gases, such as water
gas, or producer gases which contain a large proportion of hydrogen, it sometimes

page_text: occurs, more particularly in the case of larger engines, that the explosive charge
becomes prematurely ignited, immediately on its introduction into the cylinder,owing
to the heat of the residual products of combustion.
According to the present invention this defect is obviated by introducing into the
cylinder during the exhaust or discharging period a quantity either of steam or of
water spray, for the purpose of cooling down the said residuary products before the
introduction of the next charge. The water spray is at once converted into steam,
and, as is also the case when the steam is introduced, it in great part escapes through
the discharge valve with the products of combustion during; the discharging stroke.
The accompanying drawing shews by way of example one arrangement for currying
out the above described invention.
Fig. 1 shews a cross section of the charging and igniting chamber of a gas motor
engine, and Fig. 2 a longitudinal section of the same.
Fig. 1 shews the arrangement for the admission of steam, while Fig. 2 shews that
for the injection of water.
a is the admission valve for the explosive charges, the admission and-igniting
passage of the cylinder, c is the cam shaft of the engine is a passage leading into
the charging chamber from a valve 7 which closes the communication between the
passage and a pipe i leading from a supply of steam or water under pressure.
The valve g is kept closed by a spring hand its stem is acted upon by a bell crank
leverf having a roller e which is acted upon by a cam don the shaft c. This cam is
so arranged as to open the valve g, and thus admit steam or water to the cylinder
during the exhaust or discharge period of the engine, the duration and quantity of
such admission being regulated by the form and position of the cam d.
k
When water spray is used, a curved perforated nozzle is attached to the passage
so as to direct the spray through the passage 7-into-the-cylinder; when using steam,
such nozzle can be made quite open, or it can be entirely dispensed with as at
Fig. 1.
Having now particularly described and ascertained the nature of this invention
and in what manner is to be performed, I declare that what I claim is:-..
1. The method of cooling the residuary products of combustion in gas motor
engines by the injection of steam or water spray into the cylinder during the dis-
charging period, in order to prevent premature ignition of the combustible charges
when these are of a very inflammable nature.
2. The use, for the injection of steam or water spray into the cylinder of a gas
motor engine of a valve g, closing communication between the admission chamber of
the cylinder and a supply pipe for steam or water under pressure such valve being
kept closed by a spring, and opened during the discharging period by a cam d and
lever substantially as herein described.
3. The use, in combination with apparatus for admitting steam or water spray into
the cylinder of a gas motor engine such as is referred to in the preceding claim, of a
curved nozzle connected to the inlet passage k, for directing the steam or water into
the cylinder, substantially as described.
Dated this 10th day of December. 1890.