Ownzing Ammoniacal Gas as a · Motive Power.
Year: 1886

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ACCCU 01 Ownzing Ammoniacal Gas as a ·
Motive Power.
I, PATRICK JAY MOMAHON, residing aú 126 St. Joseph Street, New Orleans, in
the County of Orleans, and State of Louisiana, in the United States of America,
gentleman, 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 a method of. utilizing ammoniacal gas as a motive power
for stationary or portable engines which method involves the application of a con-
denser and vacuum pump to an ammoniacal-gas-engine whereby the back pressure
on the surface of the liquid of reabsorption (and consequently upon the engine) is
obviated and in its stead, a vacuum is maintained in the condenser, and on the
exhaust side of the piston and the pump which exhausts the condenser, circulates
the liquid which absorbs the gas in the condenser through the coil in the generator
and jacket of the engine cylinder.
Referring to the drawings
Fig. 1 is an elevation with parts shown in section of an ammoniacal gas-engine
and generator with the pump and condenser attached, also showing the tank which
contains the liquid to reabsorb the gas,
Fig. 2 is a plan of the pump and condenser, and
Fig. 3 is an enlarged sectional view of the pump and condenser.
Like letters indicate like parts in all the figures.
In Fig. 1, H is the gas generator enclosing the coil, F. C, C, is the jacket,
enclosing the cylinder, I. R is a common tank to contain the liquid for absorbing
the gas as it is exhausted from the engine. K is the vacuum pump, and, L, the
condenser.
S, is a throttle valve in the pressure pipe, E, which admits the gas from the
generator to work the engine. U, is the exhaust pipe from the engine to the con-
denser L. O is a check-valve in the exhaust pipe. N, is an injection valve to
admit the solution of reabsorption to the condenser as may be required. M is a
check-valve between the condenser and pump. A, is the discharge pipe from the
pump K, and is connected with one end of the pipe forming the coil, F, in the
generator, H.

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The pipe B is connected with the other end of said coil and with the jacket C, C,
inclosing the cylinder I. The pipe, P, is an overflow from the top of the jacket C, C, to
the tank, R.
The mode of operation is as follows:-
The gas taken from the generator after operating the piston of the engine, is
exhausted into the condenser L, where it is met by a jet of the solution of
reabsorption admitted through the injection valve N, and gives out in this solution,
the heat it took to evaporate it in the generator. This heated solution is with-
drawn from the condenser, L, and circulated by the pump, K, through the pipe A,
coil, F, cylinder jacket C, C, and through the pipe P, into the tank, R.
While passing through the coil, F, which is immersed in the liquid ammonia in
the generator, it transmits the heat back to this liquid which is being continually
taken from it by the evaporation of the gas and thus supplies the heat to keep
up the evaporation so long as a sufficient surface of the coil is covered with
ammonia.
From the coil this liquid passes through the jacket, C, C, where it prevents the
cylinder from getting too cold (which would be the case with an exposed cylinder)
and superheats the gas during expansion or while throttling.
This liquid becomes reduced in temperature by the time it reaches the tank R
where it is at its lowest point when again required for injection.
This arrangement for the different parts is adopted for the purpose of illustra-
tion of one form of mechanism for practicing my method but the different parts can
be distributed around as may be required for any purpose or location only main-
taining proper connections and their forms also may be modified to suit any
particular requirement as for instance, if the engine is required to propel a street
the solution of reabsorption in the tank R could be contained in tubes under
the seats.
car,
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:
The method hereindescribed of vaporizing liquid ammonia in the process of
generating gas for operating an engine, which consists in injecting into a condenser
a predetermined quantity of a reabsorbing liquid to meet the requirements of the
quantity of gas exhausted by the motor and subsequently positively circulating
said predetermined quantities of commingled reabsorbing liquid and exhaust gas
through and along the heating surfaces of the generator, which are surrounded by
anhydrous ammonia, substantially as and for the purposes specified.
1000