US1789384A - Oiling system for internal-combustion engines - Google Patents

Description

Jan. 20, 1931. o. J. GROEHN 1,739,384

' OILING SYSTEM FOR INTERNAL COMBUSTION ENGINES Filed Feb. 25, 1929 2 Shoots-Sheet 1 /Z //a 2 I 4 y A-Hya Jan. 20, 1931. o. J. GROEHN 1,789,384

01mm SYSTEM FOR INTERNAL COMBUSTION ENGINES Filed Feb. 25, 1929 2 Sheets-Sheet 2 /Z (3 o o o O x I //a 4m INVEN+URI b MEAN W *V N Y Patented Jan. 20, 1931 .UNITE'D STATES PATENT OFFICE OTTOJ. GROEHN, OF GBOSSE POIN'I'E PARK, MICHIGAN, ASSIGNORTO HUDSON MOTOR 1 CAR COMPANY, OF DETROIT, MICHIGAN, A CORPORATION OF'MICHIGAN OIIIING SYSTEM FOR INTERNAL-COMBUSTION ENGINES Application filed ma 25, was. Serial No. 342,421.

This invention relates to an oil tray and sump assembly and more particularly to means for circulating the oil in a splash lubricating system for Internal combustion engines andfor conveying the oil successively to a pluralit will be splas ed up evenly at all times to the several parts to be lubricated, and at the same time the. excess oil splashed up will be intercepted, and progressively returned to the sump. By these means the amount of Oil mist surrounding the parts of the engine may be controlled andthe undesirable effects of over-lubricationof the cylinders avoided.

1s lash oiling s stem such as is disclosedv in My invention has to dogenerally with a nited States tters PatentNos. 1,241,589 and 1,256,754,,granted October 2, .1917, and February 19, 1918, respectively to E. M. White, and has for its 0 ject to provide improved means for conveying and controlling the oil splashed up and for effecting an even lubrication by re ucing turbulence in the sump. j

: "Other objects of the invention will appear from the following description of a preferred embodiment illustrated in the accompanying drawings, it being understood, however,

that the particular construction described and shown has been chosen for purposes of ex emplification merely, and that the invention a Fig. 4 is a sectional is not to'be limited; otherwise than as defined by the claims hereunto'appendedand as required by the prior art. I p

' Referring now to the drawings Fig; 1 .is a longitudinal section through the oil tray and sump assembly. I

-F"g. 2 is a transverse sectiontaken substantially on the line 22, Fig. 1.

Fig. 3 is a transverse section taken on line 3-3i0f Fig. 1. p q a perspective view of the oil tray, showing the arrangement of the in- .terceptors and oil conveyors.

Fig. 5 is a similar view of the oil sump and the'splash plates mounted therein.

In Figs. 1 to 3 inclusive the letter A denotes the lowerpartof the crank case of an internal combustion engine, and the numerals'l and-2 designate respectivelyan oil tray of receptacles so that the oil and an oil sump or reservoirsecured, the for mer above the latter, to the open bottom of said crank case to close said open bottom. C

(Fig.2 denotes the crank shaft having Cranks respectively connected with the severalpistons (not shown) by connecting rods'IO.

The oil tray 1, which is spaced vertically above the bottom of the sump 2, has a number of laterally extending depressions 3, 4, 5, 6, 7 and 8 which serve as troughs or receptaclesin which the oil collects. .The depressions are equal in number tothe cranks B and are so positioned that the finger 9 carried on the end of each of the connecting rods 10 will'splash up oil from meet the receptacles in a manner well understood in the art.- Alongone side of the'oil tray means are provided to control the volume of the oil which is splashed up by the revolving cranks and to limit the area of theoil mist the intercepters 11 and 12 have spaced,

curved, vertical walls, concave toward the receptacle, and are nested concentrically, one

within the other, the-intercepter 12 bein'gof greater heightthan the intercepter 11. The inner and smaller intercepter 11 has a plate or 'horizontalw'all 11a across its top while the outer and larger intercepter 12 also has a platev ortop horizontal wall 12a, but the latter is partially cut away centrallythereof so that it will not prevent oil from being directed to all of the parts requiring lubrication. These intercepters'are devised so that the. smaller intercepter 11 will catch the bulk of the oil which is splashed up at such an angle that it'will not reach the parts to be lubricated. The larger intercepter 12 is designed to supplementt-his action and to intercept the oil carried momentarily by the finger on the crankshaft and thrown off thereafter as it revolves. The intercepters together serve to prevent the formation of an oil mist (or drum) which otherwise surround thecrankshaft and tends to rotate therewith, Bythis means it is possible'to be reduced ,to a minimum, so that the oil may each of the pairs of intercepters, with the' e ception f-Vt epair a ther mmos r cap:

tacle il onv y s eip fo idedii AS.

illustrated in Fig. 4, each of the conveyors extends longitudinally of the tray. substan-i tially the width of each depression,and is closed at the front endbut-op'en atthe rear end so that theoil which collects therein will be fedfprogressively to the rear adjoining receptacle. The rear end of each of the conveyors is.extendedtransversely of the tray to form a wall 13a separating the adjoining depressions in order to more effectually prevent the oil from returning to the reservoir from. whichit was splashed up, In this manner the oilis splashed up from thereceptacles, 'collectedby the-conveyors, and progressively passed rearwardlyfrmn onereceptacle to another until i t reach'es the rearmost receptacle 8. The oil that gathers in the latter receptacle is'splashed through an opening 14 in the side wall ofthe tray (see Figs. '3an d l)' by means of which the oil'may be fed back into the oil sump 2.

The main oil reservoirorfsump 2 is positioned beneath the oil tray and has at one'end an opening 15, c1osed a plug 16, through which' the oil contained therein may be drained; The pipe 17 ,shown in Figs l and 5, at the rear end of the sump serves to return the oil from the upper portionspf the crank case above thetray. Positioned transversely across the sump directly in front of this pipe a splashplate '18 is provided and spaced somewhat further forward there is a 'second splash plate 19. These plates extend v substantially across the full width of the sump with the exception of narrow spaces at each side thereof, one of which is indicated at S in Fig 3, and mayals o be provided with notches orv openings T adjacent the bottom of the sump, They are spaced apartso that the outlet 14 from the rearmost receptacle of the oiltray will empty into, the oil sump therebetween and from which the oil will pass throughthe spaces S and openings T 'in' an even flow to the main body ofv the sump.

* These plates are provided to prevent splashing of the oil returned to the sump from. the upper portions of the crank case through thepipe 1 7 andfrom the tray as it is discharged through} the outlet 14. order to .obtain an even lubrication at all times it ,is

important that turbulence in th e oil sump be pumped up therefrom, at an even rate. The plateslSand' 19 perform an important service in accomplishing'this result.-

tofore'it has been customary to permanently The oil tray fits into the upper portion of the oil sump, and both the sump and tray are provided with marginal flanges having holes therethrough to receive bolts 20 by which the tray and sump may be demountably secured together, and to the edges of the open bottom of the crank case A. As shown iir'Figs. 1 and---2,--a gasket 20 is secured between the flanges of; the oil, tray and 'oilsump. Heresecure the oil tray and oil sump together asby the use v -of rivets or solder, making it impossible to get at the interior of the sump to cleanit thoroughly Since it is very desirable to keep both the tray and sump thoroughly clean inorder to obtain better-lubrication; and to' avoid wear on the parts of Y the engin e,,the readily demountable'arrangement of the oil tray and oilsump is animportant advantageofmy-invention.-

Having thus described claim: I Y s v 1. In j an internal combustiomengine, the combination with the crank shaftand com necting rods,- of an oil "tray, below said crank shaft having depressions therein constituting oil receptacles or troughs-from which the .connecting. rods may splash up oil, and a pair :of intercep'tors positioned adjacentone (endof each receptacle, said intercepters being iconcave toward the receptacle "and being nested one within theother.

2x111 aninternal combustion engine, the combination with the crank shaft {and connecting rods, of an oil tray belowsaid crank my invention, I

' sha fthavingdepressions therein constituting oil receptacles or troughs from -which-the connecting rods may splash upoil, and a: pair; of

spaced, curved, vertical walls, concave toward the receptacle and concentrically .aar-

ranged, the inner intercepter-=being of less heightthanthe outer an'd havinga closedtop,

and the'outer intercepter-havinga top wall '110 which is partially cut away centrally the eof.

3. In an internal combustion engine, the combination with, the crank shaft and: connecting rods, of anoil tray-belowsaidicrank shaft having depressions therein constituting' oil receptaclesor-troughs fromwhich the connecting rods may splash upoil, andqoilzconveyors for CdUSlllgfllBOlldlO be .fed progressively through said depressions m $1lGGe SS1OIl,

the rear'end of each ofsaid: conveyors being extended transversely of thetray to-forma vertical 1 wall separating adjoining depressions.

4. In an internalcombustion engine, the

combination with the crank 'shaft and .con-' 1 5 necting rods,'of an oil: tray below said crank shaft having depressions therein constituting oil receptacles'ortroughs from which theconnecting rods may splash up oil, an. oil reser;

voir beneatlr saidtray, means for; feeding the. 1

oil progressively thro b said depressions in succession, the wall 0 said tray having an opening through which the oil is finally discharged into said reservoir, and s lashplates in said reservoir on either side 0 said openmg.

5. In an internal combustion engine, the combination with a crank shaft and connecting rods, of an oil tray having depressions from which the connecting rods may s lash up oil, and a plurality of intereeptors 0 un equal height adjacent the end of each receptacle, the said interceptors being arranged one behind the other in the order of height.

6. In an internal combustion en 'ne, the combination with a crank shaft an connection rods, of an oil tray below said crank shaft having depressions therein constituting oil receptacles from which the connecting rods may splash up oil, and oil conveyors for causing the oil to be fed progressively through said depressions in succession, said conveyors a being carried by the tra and having integral end extensions dispose transversely of the tray between the several troughs.

In testimony whereof I aflix m OTTO J. GltO ature. HN.

Images