US1168623A - Temperature-controlling apparatus for internal-combustion engines. - Google Patents

Description

F. M. FURBER.

TEMPERATURE CONTROLLING APPARATUS FOR INTERNAL COMBUSTION ENGINES. APPLICATION FILED AUG.4. 1915.

l 16,623 I a Patented Jan. 18, L916.

2 SHEETS-SHEET I.

LEW Elm 1 M F. M. FURBER.

TEMPERATURE CONTROLLING APPARATUS FOR INTERNAL COMBUSTION ENGINES.

APPLICATION FILED AUG.4. I915.

1., lfififigfio Patented Jan. 18, 1916.

2 SHEETSSHEET 2.

' STAT s PAT131 T;

rannnarcx-m. FURIBER, or nnvnnn, MASSACHUSETTS.

'rEMrEnArURE-ooNrnouIive arrmrus m ltNTERNAL-COMBUSTION ENGINES.

To all whom it may concern:

Be. it lmown that I, FREDERICK M. FUR- BER, a citizen of the United States, .residing at Revere, in the county ofSuflolk and State of Massachusetts, have invented certain Improvements in Temperature Controlling Apparatus for Internal-Combustion Engines, of which the following description, in connection with the accompanying drawings, is a specification, like reference char-.

acters onthe drawingsindicating like parts in the several figures. 1

Most internal combustion engines usedin automobiles are equipped with a water cooling system which is designed to radiate heat. from the engine with sufiicient rapidity to maintain the engine at an efliciently operating. temperature. These cooling. systems are of course designed .With particular reference to the operating conditions in hot weather and accordingly-it is-found thatthey radiate .the heat so rapidly in .cold weather as to feduce'the temperature of the engine to a point at which it cannot operate efficiently. In very severe weather the water in the cooling .system sometimes freezes even While the engine is in operation.

The .present' invention aims to devise .means for controlling automatically the 8' temperature of the as to maintain it.

engine in-such a manner at substantillyalltimes during its operation at an eflicientlyoperative temperature. More specifically the invention aims to avoid the undesirable reduc tion in temperature of the engine which it -is operated in .cold weather; "In the embodiment of the invention hereinafter described in detail this object is accomplished by supplying from a source supplemental to the engine jacket theamount'of heat required to maintain the .w'ater'in thecooling system at the desired temperature. Preferably the heat of the exhaust fro' n the engine is utilized for this purpose. 1

The invention will be readily understood from the following description, reference the accompanying drawings, Figure 1 is a side view of an apparatus Fig. 2 is a view slightly modified tional view through a part of the apparatus shown in Fig. 2. v

Referring now to the drawings, 2 indithe pipes 6 into the top of the screw 22, the thermostat .20 4 suflicientlyto ma ntain the valve 18 in its seat and thus prevent the flow of water I Specification of Letters .Patent. Patented J 11 .18, 1916 Application filed August 4,1915. fseriarnaaaeeo.

cates-an internal combustion engine of a typeicoinmonly used in automobiles; 4, the radiator for the engine; and 6 and 8, the

pipes that conduct the circulating Water or ranged in parallel with the radiator 4 and consists of-a pipe or conduit 10 leading from the pipe 8 to .one of the lower ends of another pipe or conduit 12 which is coiled around the exhaust pipe 14 of the engine, a third conduit 16 connecting. the upper end of the'coil 12 with the pipe 6. A valve 18 siphon. cooling system. A- shunt c1rcu1t for the cooling Wateris arcontrols the flow of water through this shunt circuit and this valve is operated by a thermostat 20 which may be of any convenient constructionbut consists, in the form shown in Fig; .1, merely of a tube or rod of suitable metal wound into helical form supporting the valve 18 .at'its lower end and itself supported at its upper end by an adjustable screw 22 threaded, through a cap 24 of a casing ,orfitting 26 to which the pipes 8 and 10 are oined. 3 u

The parts are so adjusted that during the operationoflthe engine the water in the cooling system flows from the upper part of the water jacket of the engine through radiator and gradually descends through the radiator as it is cooled. returning again to the lower end of the jacket through the pipe 8. This is the ordinary operation of a system of this type. So long as the] temperature" of the' Water as it passes through the casing 26 remains above a predetermined point which may of course be varied by ad usting the through the shunt circuit formed by the pipes 10, 12 and 16; but whenthe temperature of the Water in the cooling system drops below a'predetermined point the therwill be expanded mostat 2O contracts, thusliftingthe valve'18 away from itsseat and allowing a certain I amount of water to flow through the shunt circuit Where it is heated by the exhaust from the engineand thus raises the temperature of the water circulating in the cooling system. As soon, however, as the temperature of the circulating water has been raised to thefldesired point the thermostat 20.

again closes the valve 18, thus shutting ofl' the flow of water through the shunt circuit.

A drain cook .28 is provided at the lowermost point in the shunt circuit and a hand valve 29 is located in the pipe 16. In warm weather when there is no occasion for using the auxiliary heating means provided by this invention the drain cook 28- may be opened and the hand valve closed, thus draining the water from the part of the shunt circuit between these points. The

cooling system of Fig. "'2 includes a pump 32 which creates a positive circulation of' Water through the system. This arrangement also includes a slightly different construction of thermostatic valve from that shown in Fig. 1. This valve is shown on a larger scale in Fig. 3 from which it will be seen that it includes a casing 34 and a diaphragm or plate 36 perforated as indicated at 37 and clamped in the casing by the cover'38. The thermostat 4:0 depends from the plate 36 and carries at its lower end a valve 42 which normally rests in a seat formed inthe outlet from the casing 34. This thermostat is of a type readily obtainable on the market and consists of aseries of thinannular metallic disks, the inner edge of each. disk being united to the inner edge of the next adjacentfdisk on one side and to the outer edge of the adjacentdisk on the opposite side, thus forming a metallic bellows which expands axially or longitudinally as its temperature ,is raised and contracts as the temperature drops. Thermostats of this type contain some volatile liquid, such as ether, and are much used in radiators for steam heating systems. The operation of this thermostat is of course the same'as t at-shownin Fig. 1. Obviously, any suitab eform of thermostat can be used. In both arrangements the water circulating through the cooling system flows around the thermostat which consequently. responds readily to changes in the temperature of the water. 1

The specific arrangements above described are designed merely to set forth clearly the nature of the invention and explain a. convenient mode of applying the invention to two common types of water cooling systems.

It will be readily appreciated by those skilled in-this art-that the invention is susceptible of much modification without dein said system, and thermostatic mechanism for controlling the action of said means.

2. In an automobile, the combination with an internal combustion engine-and a water cooling system therefor, of means for utigine to raise the temperatureof the water in said system, and mechanism controlled by lizing the heat of the exhaust from the enthe temperature ofthe circulating water for controlling the action of said means.

3. In an automobile, the combination with an internal combustion engine and a water cooling-system therefor}- of means for utilizing the'heat of the exhaust from the engine to raise the temperature of the circulating water, and mechanism controlled by the temperature of the water in said system arranged to operate automatically to, render said means operative when the temperature of the water falls below a predetermined point and to render said means inoperative again when the temperature of the water has risen above a predetermined, point.

4. Inan automobile, the combination with an internal combustion engine and a water cooling'system therefor, of a water conduit supplemental to said system arranged to be heated by the exhaust from the engine, and

means responsive to changes in thetemperature of the water in said system for controlling the flow of water through said conduit. 5. In an automobile, the combination wlth an internal combustion engine and a water cooling system .therefor,'of a water conduit supplemental to said system arranged to be heated by the exhaust from the engine, and a thermostatic valve operative to permit the flow of water through said conduit when the temperature of the water in said system falls below a predetermined point and to cut off said flow when the temperature of the water in said system has risen above mined point. I

' 6. In an automobile, the combination with an internal combustion engine and a water cooling system therefor including a radiator, of a shunt circuit-for the water in said system, said circuit including a conduit arranged to be heated by the exhaust from the a predeterengine, a valve for controlling thefiow of. 7

water through said shunt circuit and a thermostat in said system arranged to operate said valve.

7 In an automobile, the combination with an internal combustion engine and a water cooling system therefor including a radiator, of a shunt circuit 'for the water in said system, said circuit being in parallel with the radiator and including a conduit arranged to be heated by the exhaust from the engine, a valve-for controlling the flow of Water through said shunt circuit and a thermostat positioned in said system near the lower end of said radiator and arranged to operate said valve.

8. In an automobile, the combination With an internal combustion en -'ne and a Water cooling system therefor, o a water conduit supplemental to said system arranged to be heated by the exhaust from the engine, and a valve arranged to control the flow of water through said conduit.

9. In an automobile, the combination with an internal combustion engine and a water magmas thermostatic means responsive to changes in the temperature of the Water in said system and operative to control the supply of heat from the exhaust to the water in said system.

10. In an automobile, the combination with an internal combustion engine, of a system through which cooling Water for the engine circulates, said system including a conduit for water constructed and arranged to be heated by the exhaust from the engine, and thermostatic means operative to control the supply of heat from said exhaust to said system.

In testimony whereof I have signed my name to this specification.

FREDERICK Ml

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