US1011520A - Combined internal-combustion and fluid-pressure engine. - Google Patents

Description

WITNESSES H. STOCKS. COMBINED INTERNAL COMBUSTION AND FLUID PRESSURE ENGINE;

APPLICATION FILED NOV. 25, 1910 1,01 1,520, Patented Dec.12,1911.

2 SHEETS-SHEET 1.

lmwpw ra W.

H. B. STOCKS. COMBINED NTBRNAL GOMBU$TIONAND FLUID PRESSURE ENGINE.

I APPLIGATION FILED NOV. 25, 1910. 1,01 1,520.

2 SHEETS-SHEET 2.

WITHE.55E 5 mYElnT K Patented Dec. 12, 1911.

I i. i application filcd flovemberfl, 1910'. Serial No. 594,193.

Tolall whomait may comm:

\ UNITED STATES PATENT OFFICE.

" s ssy nnirwnnm srocxs, or,MANcnnsrna'nNsmNn.

e menm'rnnnan comnusrron nun Bruin-reassure: ENGINE.

Be it known'that IQ-HARRY BEN-WELL 'S'rooKs, a subject .of the King of Great Britain and-Ireland, residing .at- .Glenroy, 10.? Barlow Moor road, ,Didsbury, Manchester, in the county of Lancaster, England, .engi neer, have invented a new or Improved Combined Internal-.Gombustion and Fluid- Pressure Engine, of which the following is -a'spec1 ficatio n. g invention has for its objeetqthe utilization ofthe waste heat of internal combust on engineswhereby I not only use the exhaust gases under pressure to assist in doing useful work but also utilize such exhaust gases for the purpose of raising pressure b evaporation of Water or other suitable fiui I'n carrying my invention into effect I will particularly describe its application tointernal combustion engines of high speed and multiple cylinders but'its application can be made to en ines of slow speed and one cylinder only i desirable, and the fluid pres sure engine operated by the waste heat as herein described may be coupled direct to' the lnternal combustion engines or not.

In the accompanying drawings which illustrate the application of my invention diagrammatically, Figure 1 is'a' sectional elevation,- and Fig. 2 is a view at right angles to Fig. 1, on an enlarged scale, 'showin section a modification.

In applying my invention to say a four,

- .cylinder internal combustion motor'as illustrated in Fig. '1, hereinafter described as a petrol motor but not restricting myself to the-use of engines driven by petrol, I pro-g ceed as follows. Three cylinders q. of the petrol motor I retain but the cylmders I construct as hereinafter described. The

fourth cylinder 1) is a compressor cylinder coupled direct to the common crankshaft a by a connecting rod din the usual way and hereinafter called the compressor. Directly, over the compressor cylinder I mount the fluid pressure-cylinder e, hereinafter called the steam cylinder. The piston e of the steam cylinder and the piston b of the comrounding-the steam cylinder 6 and totally inclosing it is' a fluid pressure generator f hereinafter called the generator. exhaust valves are provided for all cyl n Inlet and ders, petrol, compressor, and steam, actu-- ated by cam shafts in the usual way, A

grooves Sur- Patented Dec. 12, 1911.

pump or pumps is or are'provided to circulate water or other fluid around the petrol cylinders and for feeding the generator, said pumps being operated by suitable means.

The construction of the petrol cylinders i's-preferably as follows. An internal cylin: der a is provided in which the piston a moves in the usual way, and formed on the outside of this cylinder in the thickness of. the metal is a spiral groove "a of suitable shape. Outside this internal cylinder is fitted a shell a so that water pumped into the spiral groove aforesaid may pass around the whole surface of the internal cylinder on its way to the enerator taking up as much heat as possib e. The inlet and exhaust valve chambers pass through the outer shell and are preferablywelded by oxy acetylene process or fixed byothen suitable means to the inner cylinder and outer shell to make vyater tight 3' oints the valve chambers being hollow that Water from the spiral ay circulate aro n m- The water or other fluid, but preferably water, can be admitted to the spiral grooves of the three (or more or less) petrol cylin:

ders in series or parallel as may befound most desirable. If in series as shown in Fig; 1, water from the bottom of thereondenser g is pumped along the pipe htothe first, and after circulating around the cyl: inder as described enters the second through the pip e g and then through the pipe 9 to the third, and so onto the generator by the pipe 9 If in parallel cold water enters each cylinder at the same time, suitable branch pipes conveying it from the pump or pumps and thence to the generator.

direction of the circulation is preferablyv from the bottom to the top of the cylinder or from thereof.

Inclosing the shell a of the petrol cylin ders a I may provide a,

suitable chamber which may be exhausted of air to prevent 100 ing temperature is efiected by a rapid flow the coldest to the hottest portion j It will be seen by the foregoing description that the water space of the petrol cyl- 1915 inders a is restricted, and cooling to workheated as hereineylinders a are conducted through passages y .mto a suitable-pipe or receptacle 6 which may be vacuum jacketed as mentioned above.- This pipe conveys the hot gases of exhaust to theinlet valve or valves is of the compressor cylinder 6 the bore and stroke of.

which will be correctly proportioned to take charge of the gases discharged by the three petrol cylinders. On the outward stroke of the compressor piston b the cylinder b receives a charge of hot gases under pres sure through the valve is from the pipe 2'- such pressure doing'useful work on the outward stroke. On the return stroke the piston of the compressor cylinder forces the gases aforesaid into the generator f before mentioned through the valves f and tubes f into actual contact with the water contained in the generator and thereby raising steam, the path of the gases through the water being made as tortuous as posslble by baflie plates or the like so that all heat may surrounded by hoods f .ment of the outward stroke of the com be transmitted to the water before the gases rise to the steam space. The tubes f are At the commencepressor and steam pistons the valve m is arcoiled and from ranged to be opened and steam. from the generator is admitted through the port m to theback of the piston e doing useful work. On the return stroke of the pistons the'valve n is opened allowing steam to exhaust preferably first into a feed water heater n in which the feed water pipe in is thence into circulation through the pipe h'from the condenser g,

which is cooled by a fan- 9. A light valve loaded air vent may be provided for the condenser g. The steam cylinder is in 'communic'ation"wi th the atmosphere through holes e to prevent compresslon infront of.

the piston e. v

The gases compressed by the compressor assist with the steam'to operate the piston of the steam cylinder, and further serve to prevent the condensation of the steam in the I As before described the" F steam cylinder'i's surrounded by the generator so' that heat losses by condensation steam' cylinder.

may be minimized. The steam cylinder may be single or double'acting but preferably single acting, as shown to simplify'valve gear. The valves m, 'n, f, k may be actuated in any suitable manner such as by cams passes to the gencylinders will contain little consistent with the supplyrof steam necesor by spring or. gravity loads. The gene'r ator bemg fed by hotyva'ter from the petrol water as is sary for the steam cylinder to do useful work.

' Means are provided to maintain a constant level of water within the generator. These,means are-indicated in Fig. 2 and consist of a .valve oclosed by a float 0 on the water level being attained, the valve opening when the water level falls to admit water by the pipe 9 When the level is attained the circulating water is discharged through a spring loaded 'valve p set to the working pressure of steam so that boiling point. of water forthat pressure is con-,-

stantly maintained the water being discharged to' the condenser tank through the pipe p" when the valve 0 is closed.

The. generator may be covered by nonconducting material or be vacuum jacketed as before described in regard to the exhaust pipes and petrol cylinder shells. I may arrange for the steam exhausted from the cylinder e to be expanded into another cylinder. A relief or safety valve may be fitted to the generator.- When fitted to two stroke motors suitable valve gear will be provided to operate the steam cylinder valves and same can be made reversible.

A modification is shown in Fig. 2 inwhich the steam cylinder e is arranged to serve'also as a-compressor cylinder. on the upward stroke of the piston e the valve 9 is drawn ofl'sits seat by thesuction of the piston and exhaust gases under pressure pass into the cylinder e. On the down stroke, the valve m (not shown in this view) is opened to admit steam from the generator behind the piston and the valve 1' is thrust off its seat to admit the compressed gases -to the generator f. 0n the upstroke the exhaust valve n is opened to allow the exhaust steam to pass to the feed water heater and the condenser as described with reference to Fig. 1. The valve '1 is actuated bya cam r on the side shaft r actuating a plunger 1 which oscillates a pivoted lever r to which is attached the rod 8 connected to the lever .9. actuating the valve n. The piston rod e passes-through a packed gland'tand is connected to a piston u workmg idly in a cylinder to which is coupled to the crank shaft 0 and serves to guide and steady the piston e of the cylinder e. In this arrangement the cylinder eis not'open to atmosphere as in It must be understood that the arran e -ments shown are capable of various'modifications so long as the spirit of my invention isIpreserved. e p i declare that what I claim 1. In combination, an internal combustion engine, a steam generator mto which water heated by the cylinders of the internal combustion engine is pumped, a compressor to force exhaust gases from the engine into the steam generator, and a steam cylinderiin which steam from the steam generator is used, substantially as described.

2. The combination with one or more internal combustion engine cylinders, of a steam cylinder and a steam generator, means to heat water by the engine cylinders and to force it from the cylinders to the steam generator, and a compressor to force exhaust gases of the internal combustion engine cylinders into the steam generator to raise the water to steam, and means to conduct the steam to the steam cylinder, substantially as described.

3'. In combination, an internal combustion engine, a steam cylinder with steam inlet and exhaust valves, a generator surrounding said steam cylinder, a piston within the steam cylinder acted upon by steam from the generator, and a compressor combined with the steam cylinder for forcing exhaust gases of the internal combustion engine within the steam generator, substantially as described.

' 4. In'combination, an internal combustion from thence to said condenser and again to the, internal combustion engine cylinders, a compressor to which the exhaust gases are conducted from the receiver and iorced thereby tothe generator to mingle with the water in the steam generator and'raise the water to steam, and means to conduct thev steam to the steam cylinder to act upon the pistonin the steam cylinder to do useful" work, and means to exhaust the steam thereafter .from the steam cylinder to the condenser, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

HARRY BENWELLI$TOGKS. Witnesses:

ALFRED STUART YATES, NORMAN KIERNAN.

Images