US3638760A - Oil tank for a rotary piston internal combustion engine with dry-sump lubrication - Google Patents

Oil tank for a rotary piston internal combustion engine with dry-sump lubrication Download PDF

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Publication number
US3638760A
US3638760A US24279A US3638760DA US3638760A US 3638760 A US3638760 A US 3638760A US 24279 A US24279 A US 24279A US 3638760D A US3638760D A US 3638760DA US 3638760 A US3638760 A US 3638760A
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United States
Prior art keywords
oil
oil tank
tank
structure according
tank structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US24279A
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English (en)
Inventor
Heinz Lamm
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
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Daimler Benz AG
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Filing date
Publication date
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Classifications

    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston 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
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/126—Dry-sumps
    • 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
    • F01M2011/0083—Dry sumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B53/00—Internal-combustion aspects of rotary-piston or oscillating-piston engines
    • F02B2053/005—Wankel engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0085—Materials for constructing engines or their parts
    • F02F2007/0092—Transparent materials
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • ABSTRACT Foreign Application Priority Data An oil tank for a rotary piston internal combustion engine, especially of trochoidal type of construction, with a dry sump 1969 Germany 19 16 967'6 lubrication for the drive unit and with a metered fresh oil lubrication for the piston cam surface in the housing casing; [52] US. Cl. ..184/6.23, 55/277, 1231/81 the oil tank for the y p lubrication indudes inlet outlet, [51] Int.
  • the present invention relates to an oil tank for a rotary piston internal combustion engine of especially trochoidal construction with a dry-sump lubrication of the drive unit and with a metered fresh oil lubrication of the piston contact or running surface in the casing of the housing, which includes an inlet and outlet line, a vent line, and a filler inlet.
  • the present invention aims at reducing the expenditures to be made with an arrangement of a dry-sump lubrication and additionally of a fresh oil lubrication.
  • the underlying problems are solved according to the present invention in that a second container receiving the oil supply for the fresh oil lubrication is arranged directly below the filler pipe in the oil container or tank receiving the oil supply for the lubricating oil circulation system of the drive unit, which second tank is connected with the oil tank by way of an overflow and has a separate discharge or outlet.
  • an inclined runoff wall may be provided above the level of the oil supply below the feedline or inlet line of the oil participating in the lubricating circulatory system, which runoff wall extends transversely through the oil tank and terminates closely in front of the second tank, if possible with a sharp edge.
  • the oil flowing back into the oil tank flows off along this runoff wall in a thin film so that the gas bubbles may be readily broken up and released. Especially this release occurs at the edge of the runoff wall, over which flows the oil into the tank.
  • the present invention provides a preferably trapezoidally shaped protecting wall above the feedline or inlet and below the venting line, whose end is disposed relatively close above the runoff wall. Oil arriving by way of the inlet is deflected by this protecting wall toward the runoff wall. Gases freed from the oil flow about this protecting wall toward the venting line.
  • the oil tank may consist of a transparent, synthetic resinous material and may be provided thereat with markings for the permissive minimum level of the oil participating in the lubricating circulation and the oil for the fresh oil lubrication.
  • Another object of the present invention resides in an oil tank structure for a rotary piston internal combustion engine of the type described above which is simple in construction, obviates the need for two separate tanks and generally reduces the structural expenditures connected therewith.
  • a further object of the present invention resides in an oil tank structure for a rotary piston internal combustion engine with dry-sump lubrication and fresh oil lubrication for the piston contact or running surface in the housing casing which assures an adequate supply of oil for the fresh oil lubrication, provides a preheating of the oil for the fresh oil lubrication and effectively removes air bubbles and gasoline from the oil returning to the oil tank.
  • FIG. I is a longitudinal cross-sectional view through an oil tank structure in accordance with the present invention.
  • FIG. 2 is a cross-sectional view through the oil tank structure taken along line IIII of FIG. 1.
  • reference numeral 1 generally designates therein the oil tank which has a square shape and is made from a transparent synthetic resinous material of any known, suitable type.
  • the tank generally designated by reference numeral 3 which is open at the top, is arranged in the oil tank I at the wall 2 thereof; the tank 3 is in operative connection by means of its three sidewalls 4, 5 and 6 with the space 7 for the oil supply of the dry-sump lubrication.
  • the space 8 in the tank 3 serves for storing the oil supply for the fresh oil lubrication.
  • the filler pipe 10 is arranged above the tank 3 in the upper closure wall 9 of the oil tank 1.
  • Both the space 7 as also the space 8 are provided at the bottom wall 11 with connecting pipes for the outlets 12 and 13, respectively.
  • the discharge or outlet line 12 leads to a pressure pump which supplies the lubricating system of the drive unit of the internal combustion engine.
  • the discharge or outlet line 13 is connected with a metering pump, by means of which fresh oil is conducted from the space 8 in metered quantities to the piston running surface (not shown) in the housing and to the sealing elements of the internal combustion engine.
  • the runoff wall 16 is arranged at the wall I5 of the oil tank 1 above the level 14 of the oil intended for the lubricating circulatory system which is present in the space 7; the runoff wall 16 extends to the walls 17 and 18 of the oil tank 1 and is inclined downwardly from the wall 15 and terminates in front of the tank 3.
  • the inlet 19 is arranged in the wall 15 closely above the runoff wall 16.
  • the trapezoidally shaped protecting wall 20 is disposed above the inlet 19; the protective wall 20 is shorter than the runoff wall 16 but is constructed more strongly inclined than the latter.
  • the venting line 21 is disposed in the upper wall 9 of the oil tank above the protective wall 20.
  • the tank 3 is filled by reason of the direct location of the inlet or filler pipe 10 above the tank 3. That quantity of oil which the tank 3 cannot accommodate, runs over into the space 7 by way of the overflow 22.
  • the oil in the space 8 of the tank 3 only serves for the fresh oil lubrication of the piston running surface, i.e., does not participate in a circulatory system
  • the oil in the space 7 carries out a circulation in a conventional manner.
  • the oil flowing back into the space 7 out of the circulatory system runs along the runoff wall I6 in a thin layer and flows off by way of the free edge of this wall in the downward direction. It thereby frees itself of any gas.
  • This gas flows about the protecting wall 20 and enters into the vent line 21.
  • the protecting wall 20 prevents effectively that oil leaving the line 19 in the form of splashes or sprays could reach the area of the vent line 21. Additionally, the protecting wall 20 conducts the oil in the direction toward the runoff wall 16.
  • the space 7 is at least twice as large as the space 8 whereby the space 8 is to have approximately a capacity of about 2 to about 4 liters of oil.
  • the oil tank is made from a transparent material, an oil-measuring stick may be dispensed with. Appropriate markings at the oil tank itself suffice for that purpose. Possibly, the oil tank may also have a configuration, different from the illustrated shape, which is adapted to the accommodation conditions.
  • An oil tank structure for a rotary piston internal combustion engine which includes a housing with a casing forming a piston contact surface, a rotating piston in said housing, a dry-sump lubrication means for the drive unit of the internal combustion engine, a metered fresh oil lubrication means of the piston contact surface in the casing, and inlet, outlet venting and filler means for said oil tank structure, characterized by a first oil tank providing an oil supply for the lubrication means of the drive unit, and a second tank providing an oil supply of the fresh oil lubrication means arranged in the oil tank receiving the oil supply for the lubricating means of the drive unit, substantially directly below the filler means, said second tank being operatively connected with the first oil tank by way of overflow means and having a separate outlet means.
  • An oil tank structure characterized in that a runoff wall means is provided above the level of the oil supply below the inlet means of the oil in said first tank and in that said runoff wall means extends transversely through the oil tank.
  • An oil tank structure characterized in that a protective wall means is arranged above the inlet means and below the vent means, the end of said protective wall means being disposed relatively close above'the runoff wall means.
  • An oil tank structure characterized in that the dry-sump lubrication means is connected by way of its outlet means with the drive unit of a rotary piston internal combustion engine of trochoidal construction while the fresh oil lubrication means is connected with the contact surface in the casing of the engine housing by way of a metering m ll.
  • An oil tank structure characterized in that a runoff wall means is provided above the level of the oil supply below the inlet means of the oil in said first tank, and in that said runoff wall means extends transversely through the oil tank.
  • An oil tank structure according to claim I characterized in that the oil tank structure consists of substantially transparent synthetic resinous material provided with markings for the permissive minimum level of the oil in said first tank and of the oil for the fresh oil lubrication means in the second tank.
  • An oil tank structure characterized in that the dry-sump lubrication means is connected by way of its outlet means with the drive unit of a rotary piston internal combustion engine of trochoidal construction while the fresh oil lubrication means is connected with the contact surface in the casing of the engine housing by way of a metering pump.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
US24279A 1969-04-02 1970-03-31 Oil tank for a rotary piston internal combustion engine with dry-sump lubrication Expired - Lifetime US3638760A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19691916967 DE1916967B2 (de) 1969-04-02 1969-04-02 Oelbehaelter fuer eine rotationskolben-brennkraftmaschine

Publications (1)

Publication Number Publication Date
US3638760A true US3638760A (en) 1972-02-01

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Family Applications (1)

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US24279A Expired - Lifetime US3638760A (en) 1969-04-02 1970-03-31 Oil tank for a rotary piston internal combustion engine with dry-sump lubrication

Country Status (3)

Country Link
US (1) US3638760A (de)
DE (1) DE1916967B2 (de)
FR (1) FR2042825A5 (de)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296716A (en) * 1978-06-03 1981-10-27 Volkswagenwerk Aktiengesellschaft Internal combustion engine for an automobile with a divided oil pan
US4398930A (en) * 1981-08-07 1983-08-16 Caterpillar Tractor Co. Fluid deaeration apparatus
US5440951A (en) * 1993-07-30 1995-08-15 Kanzaki Kokyukoki Mfg. Co., Ltd. Axle driving system
US5582271A (en) * 1993-01-04 1996-12-10 Safematic Oy Method and apparatus for removing moisture, air, and dirt from lubricating oil
US5878841A (en) * 1994-12-28 1999-03-09 Alfa Laval Agri Ab Joint device for a lubrication system and a pump apparatus including the joint device
US6167990B1 (en) * 1999-02-03 2001-01-02 Industrial Technology Research Institute Lubricating device for four-stroke engine
US6338749B1 (en) * 2000-05-23 2002-01-15 Delphi Technologies, Inc. System and method for degassing a material and a material distributor for use when degassing a material
GB2382117A (en) * 2001-10-05 2003-05-21 Hansen Transmissions Int Gear unit having a dry sump for a wind turbine
US20030188576A1 (en) * 2002-04-04 2003-10-09 Park Gile Jun Yang Engine oil auto-add system
GB2421284A (en) * 2004-12-15 2006-06-21 Ford Global Tech Llc Oil tank for dry sump engines
US20090026015A1 (en) * 2007-07-26 2009-01-29 Ford Global Technologies, Llc Oil Pan With Flow Management Tunnel
US20090078219A1 (en) * 2007-09-24 2009-03-26 Gregory Alan Marsh System and method for providing an integrated cooling system using an independent multi-control system
US20120298930A1 (en) * 2011-05-23 2012-11-29 Chaofeng Zou Nanostructure compositions, coatings, and films
US9920880B2 (en) 2012-01-16 2018-03-20 Hamilton Sundstrand Corporation Deaerating assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2352193A1 (fr) * 1976-05-18 1977-12-16 Meys Willy Dispositif permettant le blocage reglable d'une piece mobile par rapport a un bati fixe
FR2621562B1 (fr) * 1987-10-07 1990-04-13 Snecma Reservoir d'huile a cloison interne

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR563091A (fr) * 1923-03-05 1923-11-26 Ets Delaunay Belleville Sa Dispositif de graissage pour moteurs
US2304255A (en) * 1941-01-27 1942-12-08 Nash Kelvinator Corp Oil pan baffle
GB931735A (en) * 1961-02-01 1963-07-17 British Petroleum Co Method of and apparatus for separating petroleum gases from crude petroleum
US3207203A (en) * 1963-12-31 1965-09-21 Wilbur L Mack Fuel tank with reserve compartment
US3523592A (en) * 1968-07-26 1970-08-11 Kohler Co Engine lubrication system
US3528226A (en) * 1968-10-08 1970-09-15 Wilhelm S Everett Horizontal vapor-liquid separator

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR563091A (fr) * 1923-03-05 1923-11-26 Ets Delaunay Belleville Sa Dispositif de graissage pour moteurs
US2304255A (en) * 1941-01-27 1942-12-08 Nash Kelvinator Corp Oil pan baffle
GB931735A (en) * 1961-02-01 1963-07-17 British Petroleum Co Method of and apparatus for separating petroleum gases from crude petroleum
US3207203A (en) * 1963-12-31 1965-09-21 Wilbur L Mack Fuel tank with reserve compartment
US3523592A (en) * 1968-07-26 1970-08-11 Kohler Co Engine lubrication system
US3528226A (en) * 1968-10-08 1970-09-15 Wilhelm S Everett Horizontal vapor-liquid separator

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4296716A (en) * 1978-06-03 1981-10-27 Volkswagenwerk Aktiengesellschaft Internal combustion engine for an automobile with a divided oil pan
US4398930A (en) * 1981-08-07 1983-08-16 Caterpillar Tractor Co. Fluid deaeration apparatus
US5582271A (en) * 1993-01-04 1996-12-10 Safematic Oy Method and apparatus for removing moisture, air, and dirt from lubricating oil
US5440951A (en) * 1993-07-30 1995-08-15 Kanzaki Kokyukoki Mfg. Co., Ltd. Axle driving system
US5878841A (en) * 1994-12-28 1999-03-09 Alfa Laval Agri Ab Joint device for a lubrication system and a pump apparatus including the joint device
US6167990B1 (en) * 1999-02-03 2001-01-02 Industrial Technology Research Institute Lubricating device for four-stroke engine
US6338749B1 (en) * 2000-05-23 2002-01-15 Delphi Technologies, Inc. System and method for degassing a material and a material distributor for use when degassing a material
GB2382117B (en) * 2001-10-05 2005-07-20 Hansen Transmissions Int Wind turbine gear unit lubrication
GB2382117A (en) * 2001-10-05 2003-05-21 Hansen Transmissions Int Gear unit having a dry sump for a wind turbine
US20050034925A1 (en) * 2001-10-05 2005-02-17 Peter Flamang Dry sump lubrication system with removable oil reservoir for wind turbine gearbox
US20030188576A1 (en) * 2002-04-04 2003-10-09 Park Gile Jun Yang Engine oil auto-add system
GB2421284A (en) * 2004-12-15 2006-06-21 Ford Global Tech Llc Oil tank for dry sump engines
GB2421284B (en) * 2004-12-15 2008-08-20 Ford Global Tech Llc Oil tank for dry sump engines
US20090026015A1 (en) * 2007-07-26 2009-01-29 Ford Global Technologies, Llc Oil Pan With Flow Management Tunnel
US20090078219A1 (en) * 2007-09-24 2009-03-26 Gregory Alan Marsh System and method for providing an integrated cooling system using an independent multi-control system
US8402929B2 (en) * 2007-09-24 2013-03-26 General Electric Company Cooling system and method
US20120298930A1 (en) * 2011-05-23 2012-11-29 Chaofeng Zou Nanostructure compositions, coatings, and films
US9920880B2 (en) 2012-01-16 2018-03-20 Hamilton Sundstrand Corporation Deaerating assembly
EP2615355B1 (de) * 2012-01-16 2020-02-05 Hamilton Sundstrand Corporation Entlüftungsanordnung

Also Published As

Publication number Publication date
DE1916967A1 (de) 1970-11-05
DE1916967B2 (de) 1976-09-16
FR2042825A5 (de) 1971-02-12

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