US1909637A - Oil cooling system - Google Patents

Oil cooling system Download PDF

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US1909637A
US1909637A US440384A US44038430A US1909637A US 1909637 A US1909637 A US 1909637A US 440384 A US440384 A US 440384A US 44038430 A US44038430 A US 44038430A US 1909637 A US1909637 A US 1909637A
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oil
pump
water
cooling
cooler
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US440384A
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Schittke Robert
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Schittke Robert
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01PCOOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/08Arrangements of lubricant coolers

Description

Ma 16, 1933. R, H KE 1,909,637
OIL COOLING SYSTEM Filed March 31, 1950 2 Sheets-Sheet 1 R. SCHITTKE ,637
OIL COOLING SYSTEM May 16, 1933.
Filed March 31, 1930 2 Shets-Shet '2 Q k u g: "-a w Q 3 x v a N Q N '1 w I 3 w: Q1 a m 3 w a s I Q Q gwvento'a Patented May 16, 1933 UNITED STATES ROBERT SCHITTKE, or LANSING, MICHIGAN OIL COOLING SYSTEM- Application, filed March 31, 1930. Serial 1 I o...440 ,3 84 .I r 1' This invention relates primarily to a novel oil cooling and engine cooling organization but it also includes various no'vel sub-combinations. For example, it is an object of the invention to operate an oil pump by a direct and co-axial forward extension of a camshaft, said pump being preferably carried in an external and accessible position adjacent an oil cooler,as, by a housing which extends over a sprocket gear employed in the driving of said camshaft; and the invention preferably includes novel means for feeding or priming said pump from a conduit containing lubricant under pressure, -such as a conduit extendinglongitudinally of said shaft and included in a gravity or pressure oil feed system. 7 r v It is also an object of this invention to provide for the direct operation of a water pump from a fan shaft,-'the rotor .of said pump, when of centrifugal type, being carried by said shaft; and, in preferred embodiments of the invention, in order that the pumped Water may advance through an oil cooler disposed therebelow, a bifurcate or other cooler outlet fitting may serve as a bracket for the support of not only said cooler but said water pump and said fan shaft.
It is an object of this invention to provide 5 integral with a fitting which serves not'only to provide for the exit of cooling fluid but for the support of said cooler and parts thereabove. Said cooler is preferably similar in type to the R-amsaur-Cha se cooler (described and claimed in application S. N. 407,730 filed Nov. 16, 1929) in that it includes a set of tubes having hex ends through which water maydescend while the oil to be cooled is advance-d transversely therebetween; and, in one advantageous embodiment, the cooled lubricating fluid may be permitted to descend into a pan in proximity to the intake of an additional pump,the latter being ordinarilyinoluded inv a pressure-feed or-service circuit which supplies various bearings and Which includes a mentioned conduit from which the pump of the cooling circuit is primed. I
Other objects of the present invention','includin'gjthe positioning of a cooler and pumps favorably to direct cooling, may be best appreciated from the following description of an illustrative embodimentthereof,ltaken in connection with the appendedclaims and the accompanying drawings: 7 r I Figure lis-a diagrammatic side elevational view showingan internal'combustion engine in which one embodiment of the present I invention is incorporated. r
F1gure2 1s a vertical section correspondingvto a leftcentral portion of Figure 1. Figure 3 is a front elevational view, with parts sectioned substantially as suggested by a line 33 of Figure 2. p I i f I i Figure 4 is a hor'zontal sectional view, taken substantially as suggested 5 the broken line 1 4 of Figure 3. f
, Referring to that embodiine t of the-pres out invention which has been selected for purposes of illustration, 7 an engine block 11 is shown as having secured tli'eiiebelow an'oil pan 12 and as comprising(along with numorons usual parts) a camshaft '13, driven (through a sprocket chain, of usual type) by a terminally secured gear lh the .latterj being enclosed within a housing At the front of the block 11, there is shown a rest to advance air for a cooling effect, a radiator B being shown in front thereof. v Connng now to novel features of the pres- [ent invention, the block 11 is shown carr ing, at the front thereof, an oil'pum'p'O; an oil cooler C.,,and a water pump P. i Camshaft 13 is shown as carrying, by means.
of screws 16 \"hich'serve also to'retain the gear 14) a plate 17 having a non-circular central opening at 18,the partsla'st referredto being employed t'o transmit rotation to an extension shaft 19, terminally interfitting within said opening Theshaft 19 is shown as extending through a bearing 2-0,,provi ded upon the housing 15i, and as adapted to impart-movement to aro'to'r in'thc-forin of a gear 21,coop'erating with a companion gear 22 and housed withln a concave' and fixed ele- I ment 23, serving as an oil pump chamber.
This chamber may be secured to the housing 15 by means such as screws 24; it may be provided with an oil inletat 25 and with an oil outlet at 26; and, if desired, resilient means such as a compression spring 27, within a bearing thimble 28, may cooperate withan outer terminal bearing plate 29 in normally maintainingthe shaft extension 19 in the illustrated relation to camshaft 13. The camshaft 13 is shown as provided witl a central and longitudinally extending conduit 30, which may be included in a-pressure lubricating system; and, in order to assure the presenceofsufiicient lubricant for aprimoil pump chamber provided by the concave element 23, or its equivalent.
-c It will be obvious that means of the described charactermight be employed to pump 3 oil into any suitab e pressure reservoir or elevated container, permitting direct or indirect flow into a pressure or gravitysystem, or other lubricating system, including the mentioned conduit 30; but the oil pumpoutlet 26 is herein shown as connected, by a pipe 37, with the oil cooler O. 6.; and this oil cooler preferably includes not only oil headers (which may be comprised in a main casting 39, with which an oil inlet fitting 40 and an oil outlet fitting 41 may communicate) but also a water inlet header element 42 and and a water outlet header element 43,-the latter being shown as a downwardly bifurcate bracket which is inte ral with water delivery fittings 44, 44, provi ed with means for their direct attachment to the engine block 11, opposite openings into the jacket thereof.
Between the main casting 39 and the respective water headers 42 and 43, there may be interposed horizontally extending frames or plates 45 and 46, optionally associated with gaskets 47 and 48, said frames or plates being constructed to receive and interfit with hexagonal terminal portions 49 of substantially cylindrical tubes 50,the ends of said tubes being so sweated or otherwise secured to one another and to said plates or frames as conduct water from header 42 to header 43, and of such external diameter as to permit a fl ow of oil in thin and repeatedly broken films transversely therebetween. Means such as bolts and/or screws 51, 52 may be employed to hold the mentioned parts in their indicated relationship; and not only the described cooler assembly but also a suitable water pump W. P., or said pump and/or a suitable fan F may also be supported from by means such as a usual pulley 60; it may be lubricatedthrough passages, such as are indicated at 61 and 62, in the bearing casting 54; and saidshaft or one of said castings should also be provided with a water intake opening 63,-such as that shown as connected with a pipe 64, extending toward the radiator R.
It will be understood that any desired alternative Water connections might be provided upon a pump operated by a fan shaft in substantially 'the described manner, but that the use of hollow bracket or brackets 44, 44
to conduct the water intothe respective sides c of the engine jacket (preferably via the described heat exchange unit, insteadof bya direct return of the water to a water cooling radiator) ishighly advantageous in its symmetrical equalization of cooling effects in the engine block. Radiator B may thus be either a sole water-cooling radiator or an auxiliary radiator for the cooling of a fraction or a separate quantity of circulated water to an exceptionally low temperature; but, in case a single water-cooling circuit is provided,
radiator B may be connected, as by a usual pipe 66, with the outlet "from the jacket of engine block 11,any desired use of thermostatic devices being, of course, permissible, even though not requisite to the present invention.
The oil cooler O. C. is shown as provided with a cooled oil delivery pipe 67 and the oil advancing therethrough obviously might be conducted directly to the various bearings that require lubrication and/or cooling; or :7
said oil might be delivered to a receptacular element at any preferred elevation and/ or pressure. However, in case the delivery pipe 67, shown as connected with the outlet fitting 41 conducts the cool oil back into a pool in the oil pan 12, or its equivalent (in preference to its being so serially connected with a service circuit as to require but one pump) means such as an additional pump 0. P. may be used to advance the oil therefrom into a pressure system,- such as that diagrammatically represented by an additional pipe at 69 and the mentioned camshaft conduit 30. In this case, the intake 70 of the pump 0. P. is preferably so positioned as promptly to receive scribed cooling circuit. In this case oil may be initially admitted to the cooling circuit pump throu h the drive shaft thereof, as
above descri ed, and it will be understood that the normal operation of said pump may soon create such aback pressure therein as substantially to discontinue inflow through said shaft,-the use of any valve (not shown) in said shaft being optional. It will be obvious that the mentioned pumps 0. P. and W. P. and alsothe cooler O. C. are positioned favorably to direct cooling by fan F.
Although the foregoing description has included complete details of but one embodiment of the present invention, it should be understood not only that various features thereof might be independently employed but also that numerous modifications, additional to those incidentally suggested herein, might easily be devised by lubrication engineers familiar with the foregoing,all without departure from the scope of the present invention.
I claim:
1. In a water-cooled engine including a block above an oil pan: means for supporting from said block a fan shaft and a camshaft; a cooling water pump and an oil pump respectively driven from said shafts; a water cooled oil cooler interposed between said pumps, and connections between the cooler and the pumps for conducting water and oil to the cooler.
2. In a water-cooled engine including a block above an oil pan means for supporting from said block a fan shaft and a camshaft; a cooling water pump and an oil pump respectively driven from said shafts; a water cooled oil cooler interposed between said pumps,--a rotor. of one of said pumps being co-axial with one of said shafts, and connections between the cooler and the pumps for conducting water and oil to the cooler.
3. In a water-cooled engine including a blockabove an oil pan: means for supporting therefrom a amshaft; and an oil pump driven from said shaft,said camshaft being provided with a passage which receives oil under pressure; said oil pump being provided with an inlet. communication with said passage.
4. In a water-cooled engine including a block above an oil pan: means for supporting from said block a fan shaft and a camshaft; and a cooling water pump and an oil pump respectively driven from said shafts,-said camshaft being driven by a gear having a fixed housing, and one of said pumps being carried by said housing.
5. In a water-cooled engine including a block above an oil pan: means for supporting from said block a fan shaft and a camshaft; and a coolin water pum and an oil pump respectively riven from s afts,one of said shafts being surrounded by a fixed housing which provides one wall of a chamber of the pump driven therethrough.
-6, In a water-cooled engine including a block above an oil pan means for supporting from said block a fan shaft and a camshaft; a cooling water pump and an oil pump respectively driven from said shafts; and a water cooled oil cooler interposed between said pumps,one of said shafts being tenninally surrounded by a fixed housing which provides one wall of a chamber of the pump driven therethrough, one of said pumps being supported from said cooler. v
' In an internal combustion engine comprising a block which provides a jacket for cooling water: a. pump for said cooling water; and supporting means for said pump,
including a hollow bracket upon said block,
conduits within said bracket being in communication with the interior of said jacket,
for a. substantially symmetrical advance of cooling water theretlirouglnv 8. In an internal combustion engine comprising a block which provides a jacket for cooling water: a pump for said cooling water; an oil cooler; and supporting means. for said pump and saidcooler, including a hollow bracket upon said block, said cooler being interposed, between said pump and said bracket, in the circuit of said cooling water.
9. In an internal combustion enginecomprising a block which provides a jacket for cooling water: an oilcooler; a pump therefor; and a bifurcate bracket, upon said block, providing means for the advance of Water through both said cooler and said block.
v10. In a lubricating system for an'internal combustion engine which includes a block providing a jacket for cooling water, and
shaft bearings to be lubricated: an oil cooler an oil pump; means for advanclng cooling -water through sald jacket and said cooler;
an oil cooling circuit which includes said cooler and said oil pump; an oil service circuit which includes said bearings; and means of communication between said circuits through one of said shafts.
11. In a lubricating system for an internal combustion engine which includes a block providing a jacket for cooling water and shaft bearings to belubricated, an oil pan being disposed therebelow; an oil cooler; means for advancing cooling water therethrough; an oil cooling circuit which includes an oil pump; and an oil service circuit,said circuits being in communication within said pan, and also through a passage leading into said oil pump, for a priming efiect.
12. In a lubricating system for an internal combustion engine which includes a block and shafts having bearings: an oil cooler; means for adx'ancing cooling Water therethrough; and an oil cooling circuit which includes an oil pump,said oil cooler being mounted upon the front of said block and 19 said pump being adjacent thereto and provided with a rotor Which is co-aXial with, and driven directly from, a shaft of said engine. 13. In an internal combustion engine which is provided with a cooling fan at one end thereof: a cooling and lubricating system which includes an oil cooler and also a plurality of pumps so positioned as to be cooled by said tam-one of said pumps being sup- 20 ported by means through which a fluid is advanced.
14. In a liquid cooled internal combustion engine, a cooling liquid pump, a lubricant pump, a lubricanttemperature regulator 10- cated adjacent to and between the pumps, and connections between the regulator and the pumps for conducting cooling liquid and lubricant to the regulator.
15. In an internalcombustion engine, a 39 lubricant sump, a lubricant pump located at a higher level than the sump and adapted to withdraw lubricant therefrom, a lubricant pump located Within the sump, and means to prime the first mentioned pump including a passage communicating therewith and with the second mentioned pump;
16. In an internal combustion engine, a lubricant sump, a lubricant temperature regulator, a lubricant pump adapted to withdraw 49 lubricant from the sump, circulate it through the regulator and return it to the sump, and a second lubricant pump having its intake located in the sump adjacent the point at which the first mentioned pump discharges lubricant thereinto.
17. In a water cooled internal combustion engine, a lubricant temperature regulator supported from the engine, a water pump mounted on the regulator and connections between the regulator and the pump for conducting Water from the pump to the regulator. I i
18. The invention claimed in claim 17 in which the means for supporting theregulator from the engine constitutes a Water passage communicating with the water acket of the engine.
In testimony whereof I attix my signature.
ROBERT SCHITTKE.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933902C (en) * 1952-11-23 1955-10-06 Kaelble Gmbh C Liquid-cooled internal combustion engine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE933902C (en) * 1952-11-23 1955-10-06 Kaelble Gmbh C Liquid-cooled internal combustion engine

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