US3515110A - Crankcase bottom part - Google Patents

Crankcase bottom part Download PDF

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Publication number
US3515110A
US3515110A US736813A US3515110DA US3515110A US 3515110 A US3515110 A US 3515110A US 736813 A US736813 A US 736813A US 3515110D A US3515110D A US 3515110DA US 3515110 A US3515110 A US 3515110A
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United States
Prior art keywords
bottom part
crankcase
sump
lubricant
present
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Expired - Lifetime
Application number
US736813A
Inventor
Herbert Deutschmann
Jurgen Wahnschaffe
Wolfgang Rudert
Kreis Waiblingen
Herbert Mader
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Daimler Benz AG
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Daimler Benz AG
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/06—Means for keeping lubricant level constant or for accommodating movement or position of machines or engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • F01M2011/005—Oilsumps with special anti-turbulence means, e.g. anti-foaming means or intermediate plates

Definitions

  • the pervious intermediate bottom may be provided with deflection means on the side facing the rotating parts of the engine formed by tongue-portions punched out of the pervious intermediate bottom.
  • the tongue-portions can be inclined so as to collect lubricant particles centrifuged by the rotating parts of the engine.
  • Liquid-tight cover parts may also be arranged within the area of the pervious intermediate bottom above an aperture in the line system operable to suck off the lubricant.
  • the present invention relates to a crankcase bottom part for an internal combustion engine, especially with dry-sump lubrication.
  • the aim underlying the present invention essentially resides in reducing the harmful splash work in the lubricant sump.
  • liquid-tight cover parts may be arranged within the area 0f the intermediate bottom above an aperture of the line system operable to suck off the lubricant. It is prevented thereby that the quieted inflow of the lubricant into the suction aperture is disturbed by the oil and/er oil swirls and eddies of the connecting-rod-weights or counterweights splashed through the intermediate bottom, and that no addition suction losses for the oil suction Pumps arise.
  • deflection parts for the centrifuged lubricant may be provided on the side cf the intermediate bottom facing the rotating engine parts. The production of an oil roller produced by the rotating parts is prevented thereby.
  • crankcase bottom part for internal combustion engines, especially with dry-sump lubrication, which avoids by simple means the aforementioned shortcomings and drawbacks encountered in the prior art.
  • Another object of the present invention resides in a crankcase bottom part which precludes the harmful splash effect in the lubricant sump.
  • a further object of the present invention resides in an 3,5 15,1 10 Patented June 2, 1970 ice internal combustion engine with a crankcase bottom part in which the oil flow in the sump toward the suction place is quieted and also protected against disturbance due to turbulence and swirls caused by the rotating engine parts.
  • crankcase bottom part for internal combustion engines especially with dry-sump lubrication, which can be constructed relatively flat in accordance with present-day vehicle requirernents.
  • Another object of the present inventiom resides in a crankcase bottom part for internal combustion engines with dry-sump lubrication in which the inflow cf the lubricant into the suction aperture is rendered relatively calm, no additional unnecessary suction losses for the oil suction pumps occur and an oil roller produced by the rotating parts is precluded.
  • FIG. 1 is a cross-sectional view through a crankcase bottom part in accordance with the present invention.
  • FIG. 2 is a schematic longitudinal cross section through a crankcase bottom part in accordance with the present invention illustrating certain additional features in accordance with the present invention.
  • reference numeral 10 generally designates in this figure a crankcase bottom part in which an intermediate bottom 12, made from sheet metal, is secured by means of bolts 13 at housing supports 14, 15 and 16 closely above the housing bottom 11.
  • FIG. 1 The radially outermost paths of the rotating engine parts relative to the crankshaft axis 17 are designated in FIG. 1 by reference numerals 18, 19, 20 and 21.
  • Deflection tongues 12a are punched out or formed out of the sheet metal bottom 12 which collect the oilair mixture particles swirled along in the direction of arrow 22 and guide the same into the sump through the apertures 12b of the intermediate bottorn 12.
  • the apertures 12b are produced by stamping out or punching out of the tongues 12a.
  • the cranckcase bottom part is designated by reference numeral 23 and the apertured intermediate bottom by reference numeral 24.
  • a suction channel 25 extending transversely to the crankshaft axis is provided which terminates by way of a sieve 26 and of a suction connection 27 in the sump ofthe crankcase.
  • a fluid-tight covering sheet metal plate 29 is securely arranged and held stationary above the aperture 28 of the suction connection 27 on the side of the sump which eifects a quieting and calming of the inflow at the aperture 28 also in the case when rotating engine parts thrust or centrifuge oil or oil mixture particles into the sump above the aperture 28.
  • a crankcase bottom part for an internal combustion engine, especially with dry sump lubrication characterized in that a permeable intermediate bottom is arranged between the sump and the rotating engine parts, a line system having a suction aperture being provided for the lubricant, and fluid-tight cover means being arranged within the area of the intermediate bottom above the suction aperture of the line system, wherein the intermediate bottom is provided with deflection means 0n its side facing the rotating parts of the engine for guiding centrifuged lubricant particles through the intermediate bottom.
  • a crankcase bottom part for an internal combustion engine especially with dry sump lu*brication, characterized in that a permea ble intermediate bottom is arranged between the sump and the rotating engine parts, wherein the intermediate bottom is provided with deflection means 011 its side facing the rotating parts of the engine for guiding centrifuged lubricant particles through the intermediate bottom.
  • crankcase bottom part according to claim 3 wherein said deflection means are formed by tongueportions punched out of the intermediate bottom leaving apertures rendering said intermediate bottom pervious to the lubricant.
  • crankcase bottom part according to claim 2, further comprising means for detachably securing said intermediate bottom to the crankcase bottom part.
  • a crankcase bottom part according to claim 2 Wherein the deflection means are so inclined as to collect lubricant particles taken along and centrifuged by the rotating engine arts.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Description

June 1970 H. DEUTSCHMANN ET AL 3,515,110
CRANKCASE BOTTOM PART Fi1ed June 13, 1968 FIG. l
INVENTORS HERBERT DEUTSCHMANN JUERGEN WAHNSCHAFFE WOLFGANG RUDERT BY HERBERT MAUER ATTORNEYS United States Patent O 3,515110 CRANKCASE BOTTOM PART Herbert Deutschmann, Stuttgart-Bad Cannstatt, Jrgen Wahnschalfe, Stuttgart-Stammheim, Wolfgang Rudert, Grunbach, Kreis Waiblingen, and Herbert Maden, Stuttgart, Germany, assignors to Daimler-Benz Aktiengesellschaft, Stuttga-Unterturkheim, Germany Filed June 13, 1968, Ser. N0. 736,813
Claims priority, application Germany, June 15, 1967,
36 Int. Cl. Flm 9/15; F16n 31/00,- F02f 7/00 U.S. c1. 12s19s Claims ABSTRACT OF THE DISCLOSURE A crankcase bottom part for an internal combustion engine, especially with dry-sump lubrication, in which a pervious intermediate bottom is arranged between the sump and the rotating engine parts permitting the assage of the lubricant. The pervious intermediate bottom may be provided with deflection means on the side facing the rotating parts of the engine formed by tongue-portions punched out of the pervious intermediate bottom. The tongue-portions can be inclined so as to collect lubricant particles centrifuged by the rotating parts of the engine. Liquid-tight cover parts may also be arranged within the area of the pervious intermediate bottom above an aperture in the line system operable to suck off the lubricant.
The present invention relates to a crankcase bottom part for an internal combustion engine, especially with dry-sump lubrication.
The aim underlying the present invention essentially resides in reducing the harmful splash work in the lubricant sump.
As solution t0 the underly'ing roblems, it is proposed according to the present invention that a liquid-perrneable or pervious intermediate bottom is arranged between the sump and the rotating engine parts. Several advantages are achieved by the present invention. The oil stream or oil flow within the sump toward the suction place is quieted and is not disturbed by the rotating masses. The distance between the sump and the rotating engine parts can therefore be kept smaller, notwithstanding the arrangement of the intermediate bottorn whereby the crankcase can be constructed more flat.
According to a further feature of the present invention, liquid-tight cover parts may be arranged within the area 0f the intermediate bottom above an aperture of the line system operable to suck off the lubricant. It is prevented thereby that the quieted inflow of the lubricant into the suction aperture is disturbed by the oil and/er oil swirls and eddies of the connecting-rod-weights or counterweights splashed through the intermediate bottom, and that no addition suction losses for the oil suction Pumps arise.
According to another feature of the present invention, deflection parts for the centrifuged lubricant may be provided on the side cf the intermediate bottom facing the rotating engine parts. The production of an oil roller produced by the rotating parts is prevented thereby.
Accordingly, it is an object of the present invention to provide a crankcase bottom part for internal combustion engines, especially with dry-sump lubrication, which avoids by simple means the aforementioned shortcomings and drawbacks encountered in the prior art.
Another object of the present invention resides in a crankcase bottom part which precludes the harmful splash effect in the lubricant sump.
A further object of the present invention resides in an 3,5 15,1 10 Patented June 2, 1970 ice internal combustion engine with a crankcase bottom part in which the oil flow in the sump toward the suction place is quieted and also protected against disturbance due to turbulence and swirls caused by the rotating engine parts.
Still a further object of the present invention resides in a crankcase bottom part for internal combustion engines, especially with dry-sump lubrication, which can be constructed relatively flat in accordance with present-day vehicle requirernents.
Another object of the present inventiom resides in a crankcase bottom part for internal combustion engines with dry-sump lubrication in which the inflow cf the lubricant into the suction aperture is rendered relatively calm, no additional unnecessary suction losses for the oil suction pumps occur and an oil roller produced by the rotating parts is precluded.
These and further objects, features and advantages of the present invention will become more obvious from the following description when taken in connection with the accompanying drawing which shows, for purposes of illustration only, one embodirnent of a crankcase in accordance with the present invention and wherein:
FIG. 1 is a cross-sectional view through a crankcase bottom part in accordance With the present invention; and
FIG. 2 is a schematic longitudinal cross section through a crankcase bottom part in accordance with the present invention illustrating certain additional features in accordance with the present invention.
Referring now to the drawing and more particularly to FIG. 1, reference numeral 10 generally designates in this figure a crankcase bottom part in which an intermediate bottom 12, made from sheet metal, is secured by means of bolts 13 at housing supports 14, 15 and 16 closely above the housing bottom 11.
The radially outermost paths of the rotating engine parts relative to the crankshaft axis 17 are designated in FIG. 1 by reference numerals 18, 19, 20 and 21.
Deflection tongues 12a are punched out or formed out of the sheet metal bottom 12 which collect the oilair mixture particles swirled along in the direction of arrow 22 and guide the same into the sump through the apertures 12b of the intermediate bottorn 12. The apertures 12b are produced by stamping out or punching out of the tongues 12a.
In FIG. 2, the cranckcase bottom part is designated by reference numeral 23 and the apertured intermediate bottom by reference numeral 24. At an end face of the bottom part 23, a suction channel 25 extending transversely to the crankshaft axis is provided which terminates by way of a sieve 26 and of a suction connection 27 in the sump ofthe crankcase. A fluid-tight covering sheet metal plate 29 is securely arranged and held stationary above the aperture 28 of the suction connection 27 on the side of the sump which eifects a quieting and calming of the inflow at the aperture 28 also in the case when rotating engine parts thrust or centrifuge oil or oil mixture particles into the sump above the aperture 28.
While we have shown and described only two embodiments in accordance with the present inventio'n, it is understood that the same is not limited thereto, but susceptible of numerous changes and modifications as known to a person skilled in the art, and we therefore do not wish to be limited to the details shown and described herein but intend to cove r all such changes and modifications as are encompassed by the scope of the present invention.
We clairn:
l. A crankcase bottom part for an internal combustion engine, especially with dry sump lubrication, characterized in that a permeable intermediate bottom is arranged between the sump and the rotating engine parts, a line system having a suction aperture being provided for the lubricant, and fluid-tight cover means being arranged within the area of the intermediate bottom above the suction aperture of the line system, wherein the intermediate bottom is provided with deflection means 0n its side facing the rotating parts of the engine for guiding centrifuged lubricant particles through the intermediate bottom.
2. A crankcase bottom part for an internal combustion engine, especially with dry sump lu*brication, characterized in that a permea ble intermediate bottom is arranged between the sump and the rotating engine parts, wherein the intermediate bottom is provided with deflection means 011 its side facing the rotating parts of the engine for guiding centrifuged lubricant particles through the intermediate bottom.
3. A crankcase bottom part according to claim 1, further comprising means for detachably securing said intermediate bottom to the crankcase bottom part.
4. A crankcase bottom part according to claim 3, wherein said deflection means are formed by tongueportions punched out of the intermediate bottom leaving apertures rendering said intermediate bottom pervious to the lubricant.
5. A crankcase bottom part according to claim 4, wherein the tongue-portions of the deflection means are so inclined as to collect lubricant particles taken along and centrifuged by the rotating engine parts.
6. A crankcase bottom part according to claim 2, further comprising means for detachably securing said intermediate bottom to the crankcase bottom part.
7. A crankcase bottom part according to claim 6, wherein said deflection means are formed by tongue-por- 4 tions punched out of the intermedia te bottom leaving apertures rendering said intermediate bottom pervious to the lubricant.
8. A crankcase bottom part according to claim 7, wherein the tongue-portions of the deflection means are so inclined as to collect lubricant particles taken along and centrifuged by the r0tating engine parts.
9. A crankcase bottom part according to claim 2, wherein said deflection means are formed by tongueportions punched out of the intermediate bottom leaving apertures rendering said intermediate bottom pervious to the lubricant.
10. A crankcase bottom part according to claim 2, Wherein the deflection means are so inclined as to collect lubricant particles taken along and centrifuged by the rotating engine arts.
References Cited UNITED STATES PATENTS 13815 16 6/ 1921 Strickland.
1676369 7/ 1928 Vincent.
1,878224 9/1932 Woolson.
1,916,522 7/1933 McCuen.
1,927,770 7/1933 Birkigt.
1,995,438 3/1935 Sheats.
2,374,822 5/1945 Le Clair.
2,408,923 10/1946 Frederick 188106 XR WENDELL E. BURNS, Primary Examiner U.S. C1. X.R. 1846
US736813A 1967-06-15 1968-06-13 Crankcase bottom part Expired - Lifetime US3515110A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52168137U (en) * 1977-06-16 1977-12-20
US4270497A (en) * 1979-08-22 1981-06-02 Valerio Robert M Oil pan for internal combustion engines
DE3840792A1 (en) * 1988-12-03 1990-06-07 Daimler Benz Ag Oil pan for a multicylinder internal combustion engine
US8302577B2 (en) 2008-11-28 2012-11-06 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Internal combustion engine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531352C1 (en) * 1985-09-03 1986-10-30 Audi AG, 8070 Ingolstadt Oil pan for internal combustion engines
DE3923986C1 (en) * 1989-07-20 1990-01-11 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE102008019676A1 (en) 2008-04-18 2009-10-29 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Internal combustion engine for vehicle, has crankcase, oil pump and oil collecting tank which is arranged underneath internal combustion engine

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1381516A (en) * 1918-09-16 1921-06-14 Peerless Motor Car Company Internal-combustion engine
US1676369A (en) * 1922-04-06 1928-07-10 Packard Motor Car Co Internal-combustion engine
US1878224A (en) * 1925-09-26 1932-09-20 Packard Motor Car Co Internal combustion engine
US1916522A (en) * 1930-01-04 1933-07-04 Gen Motors Corp V-8 engine
US1927770A (en) * 1931-11-12 1933-09-19 Birkigt Marc Crank case lubricating system
US1995438A (en) * 1929-06-29 1935-03-26 Gen Motors Corp Refrigerating apparatus
US2374822A (en) * 1941-08-22 1945-05-01 Clair Camille Clare Sprankl Le Means for preventing the aeration of liquid in liquid circulating systems
US2408923A (en) * 1945-02-12 1946-10-08 Gen Motors Corp Trap for chips

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1381516A (en) * 1918-09-16 1921-06-14 Peerless Motor Car Company Internal-combustion engine
US1676369A (en) * 1922-04-06 1928-07-10 Packard Motor Car Co Internal-combustion engine
US1878224A (en) * 1925-09-26 1932-09-20 Packard Motor Car Co Internal combustion engine
US1995438A (en) * 1929-06-29 1935-03-26 Gen Motors Corp Refrigerating apparatus
US1916522A (en) * 1930-01-04 1933-07-04 Gen Motors Corp V-8 engine
US1927770A (en) * 1931-11-12 1933-09-19 Birkigt Marc Crank case lubricating system
US2374822A (en) * 1941-08-22 1945-05-01 Clair Camille Clare Sprankl Le Means for preventing the aeration of liquid in liquid circulating systems
US2408923A (en) * 1945-02-12 1946-10-08 Gen Motors Corp Trap for chips

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52168137U (en) * 1977-06-16 1977-12-20
US4270497A (en) * 1979-08-22 1981-06-02 Valerio Robert M Oil pan for internal combustion engines
DE3840792A1 (en) * 1988-12-03 1990-06-07 Daimler Benz Ag Oil pan for a multicylinder internal combustion engine
US8302577B2 (en) 2008-11-28 2012-11-06 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Internal combustion engine

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