EP2749741A2 - Ölwanne - Google Patents

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Publication number
EP2749741A2
EP2749741A2 EP13198016.1A EP13198016A EP2749741A2 EP 2749741 A2 EP2749741 A2 EP 2749741A2 EP 13198016 A EP13198016 A EP 13198016A EP 2749741 A2 EP2749741 A2 EP 2749741A2
Authority
EP
European Patent Office
Prior art keywords
oil pan
oil
separator
seal member
outer tank
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.)
Withdrawn
Application number
EP13198016.1A
Other languages
English (en)
French (fr)
Other versions
EP2749741A3 (de
Inventor
Kazuya Yoshijima
Yasuji Sasaki
Hiroyuki Sato
Kenji Takeuchi
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.)
Toyota Motor Corp
Pacific Industrial Co Ltd
Original Assignee
Toyota Motor Corp
Pacific Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp, Pacific Industrial Co Ltd filed Critical Toyota Motor Corp
Publication of EP2749741A2 publication Critical patent/EP2749741A2/de
Publication of EP2749741A3 publication Critical patent/EP2749741A3/de
Withdrawn legal-status Critical Current

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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
    • F01M11/0004—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
    • F01M2011/0037—Oilsumps with different oil compartments
    • 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
    • F01M2011/0037—Oilsumps with different oil compartments
    • F01M2011/0045—Oilsumps with different oil compartments for controlling the oil temperature
    • 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
    • F01M2011/0062—Gaskets
    • 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
    • F01M2011/0091—Oilsumps characterised by used materials

Definitions

  • the present invention relates to a two-tank oil pan having an inner tank and an outer tank.
  • a two-tank oil pan which has two tanks, an inner tank and an outer tank, separated by a separator installed therein (Japanese Patent Application Publication No. 2011-226394 ( JP 2011-226394 A )).
  • JP 2011-226394 A Japanese Patent Application Publication No. 2011-226394
  • only the oil stored in the inner tank is circulated after the engine is started to increase the temperature of oil for quickly warming up the internal combustion engine.
  • the oil used for lubricating the internal combustion engine is returned to the oil pan through the oil dropping passage provided in the cylinder block or from the crank shaft.
  • the oil, returned from the crankshaft to the oil pan spatters as the crankshaft rotates and flows down on the inside wall of the cylinder block.
  • a part of oil, returned through the oil dropping passage also flows down on the inside wall of the cylinder block.
  • the amount of oil exceeds the maximum storage capacity of the outer tank, the oil flows into the inner tank. In such a case, the temperature of the oil stored in the inner tank decreases, the internal combustion engine may be prevented from being warmed up quickly.
  • the present invention provides an oil pan capable of quickly warming up the internal combustion engine.
  • An oil pan in an aspect of the present invention includes a separator that partitions the inside of the oil pan into an inner tank and an outer tank and has a communication hole for communication between the inner tank and outer tank; and a seal member that seals the outer tank at a position above the communication hole in the outer tank.
  • the part above the communication hole in the outer tank is sealed by the seal member to cause the most of the oil, which flows down on the inside wall of the cylinder block, to flow into the inner tank.
  • This configuration therefore reduces a drop in the oil temperature in the inner tank, thus allowing the internal combustion engine to be warmed up quickly.
  • the seal member of the oil pan may be made of an elastic material and the separator may be assembled on the oil pan via the seal member.
  • This configuration allows the seal member to deform elastically and thereby seals the outer tank more securely to complete the warm-up of the internal combustion engine more quickly. Even if there is a size error in the separator, this configuration allows the separator to be assembled on the oil pan while allowing the error, thus ensuring higher design flexibility.
  • the separator is supported by the oil pan via the elastic seal member, a vibration in the separator and the oil pan is reduced.
  • the seal member may seal the outer tank at its upper end. This configuration reduces the amount of oil that would be left stayed above the seal member in the outer tank.
  • the elastic material may be a liquid packing.
  • the liquid packing which is a liquid when applied, can adhere together, and seal between, the separator and the oil pan even when the installation surface of the separator and/or the oil pan is uneven. Therefore, the configuration described above makes it easier to assemble the oil pan and the separator together.
  • the seal member may also be a gasket.
  • the separator may be made of resin.
  • the heat insulating effect is higher than when the separator is made of metal, thus reducing the transfer of heat between the inner tank and the outer tank. Therefore, the temperature of the oil in the inner tank can be increased quickly.
  • a cylinder block 1 of the internal combustion engine has a crankshaft 2 and an oil dropping passage 3.
  • the cylinder block 1 has an oil pan 4 assembled at its lower end.
  • the oil pan 4 has its inside partitioned into an inner tank 6 and an outer tank 7 by the separator 5.
  • the part surrounded by an inner circumference surface 8 of the separator 5 is the inner tank 6 and the part surrounded between an outer circumference surface 9 of the separator 5 and an inside wall surface 10 of the oil pan 4 is the outer tank 7.
  • an oil strainer 11 for sucking the stored oil is provided in the inner tank 6, an oil strainer 11 for sucking the stored oil is provided in the inner tank 6, and the inner tank 6 and outer tank 7 communicate with each other via a communication hole 12 provided on the side wall of the separator 5.
  • the upper end of the outer circumference surface 9 of the separator 5 is adhered, over the entire periphery, to the inside wall surface 10 of the oil pan 4 by a liquid packing. That is, the upper end of the outer tank 7 is sealed by a seal member 13 of a liquid packing over the entire periphery.
  • the separator 5 and the oil pan 4 are adhered by the liquid packing as described below.
  • the liquid packing is applied to the upper end of the outer circumference surface 9 of the separator 5 over the entire periphery. Then, before the liquid packing is cured, the liquid packing application surface of the separator 5 and the inside wall surface 10 of the oil pan 4 are crimped to cure the liquid packing. The adhesive strength of the liquid packing assembles the separator 5 and the oil pan 4 together. Once cured, the liquid packing becomes elastic.
  • the oil pump is driven to suck the oil from the inner tank 6 through the oil strainer 11.
  • the sucked oil is used to lubricate the components of the internal combustion engine and is returned from the oil dropping passage 3 or the crankshaft 2 to the oil pan 4.
  • a part of the oil flows down on an inside wall 14 of the cylinder block 1.
  • the oil flowing down on the inside wall 14 of the cylinder block 1 flows, not into the outer tank 7, but into the inner tank 6. This reduces a drop in the temperature of the oil in the inner tank 6.
  • the sucking of the oil is stopped and at the same time the oil, which have lubricated the components of the internal combustion engine, is returned to the inner tank 6, causing the level of the oil, stored in the inner tank 6, to rise.
  • the oil level rises above the communication hole 12
  • the oil flows from the inner tank 6 into the outer tank 7 through the communication hole 12.
  • the oil which flows and diffuses from the inner tank 6 into the outer tank 7 in this manner, reduces the deterioration of the oil in the inner tank 6.
  • the seal member 13 is elastic. This elasticity causes the seal member 13 to stick to both the outer circumference surface 9 of the separator 5 and the inside wall surface 10 of the oil pan 4, making it possible to seal the outer tank 7 more securely. Even if there is a size error in the separator 5, this elasticity causes the separator 5 to be assembled on the oil pan 4 while allowing the error. In addition, this seal member 13 reduces a vibration generated in the separator 5 and the oil pan 4.
  • the seal member 13 seals the outer tank 7 at its upper end, the top surface of the seal member 13 and the top end surface of the separator 5 are almost at the same level. This configuration prevents the oil, which flows down on the inside wall 14, from staying above the oil stored in the outer tank 7.
  • the separator 5 made of resin with a higher heat insulating effect than that of a separator made of metal, reduces the transfer of heat between the inner tank 6 and the outer tank 7. Therefore, the temperature of the oil in the inner tank 6 can be increased quickly.
  • the exemplary embodiment described above has the following effects.
  • the part above the communication hole 12 is sealed by the seal member 13. This configuration reduces a drop in the oil temperature in the inner tank 6 after the engine is started, thus allowing the internal combustion engine to be warmed up quickly.
  • the seal member 13 made of an elastic material, seals the outer tank 7 more securely to complete the warm-up of the internal combustion engine more quickly.
  • the use of this elastic seal member 13 to assemble the separator 5 on the oil pan 4 also ensures higher design flexibility. In addition, this elasticity reduces a vibration in the separator 5 and the oil pan 4.
  • One exemplary embodiment described above may also be implemented by an exemplary embodiment created by modifying the above-described exemplary embodiment as follows.
  • the separator 5, though made of resin in the exemplary embodiment described above, may also be made of other materials such as aluminum or iron. Such a configuration also achieves the same effect as the configuration of the exemplary embodiment described above.
  • the separator 5 may also be assembled on the oil pan 4 not only by the adhesive strength of the seal member 13 but also by a bolt that fastens the separator 5 onto the oil pan 4 with the seal member 13 between the two.
  • the sealing position may be changed as necessary as long as it is above the communication hole 12. Such a configuration also achieves the same effect as the configuration of the exemplary embodiments described above.
  • FIG. 3 shows one such example.
  • the configuration of the seal member of the oil pan 4 is different from that of the seal member in the exemplary embodiments described above.
  • the same reference numeral is given to the part of the configuration similar to that of the exemplary embodiments above and the detailed description is omitted.
  • the separator 5 is fastened on the oil pan 4 by a bolt with a rubber gasket 15, V-shaped in cross section, provided over the entire periphery of the outer circumference surface 9.
  • This configuration seals the upper end of the outer tank 7, causing the oil, which flows down on the inside wall 14 of the cylinder block 1, to flow not into the outer tank 7 but into the inner tank 6. Therefore, this configuration reduces a drop in the temperature of the oil in the inner tank 6.
  • the separator 5 is assembled on the oil pan 4 via the elastic rubber gasket 15. Therefore, this configuration achieves the same effect as the configuration described above.
  • the seal member though made of an elastic material in the exemplary embodiments described above, may also be made of a non-elastic material such as a metal gasket. This configuration also achieves the same effect as the configuration described above.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
EP13198016.1A 2012-12-26 2013-12-18 Ölwanne Withdrawn EP2749741A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012283307A JP2014125966A (ja) 2012-12-26 2012-12-26 オイルパン

Publications (2)

Publication Number Publication Date
EP2749741A2 true EP2749741A2 (de) 2014-07-02
EP2749741A3 EP2749741A3 (de) 2015-08-05

Family

ID=49884968

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13198016.1A Withdrawn EP2749741A3 (de) 2012-12-26 2013-12-18 Ölwanne

Country Status (2)

Country Link
EP (1) EP2749741A3 (de)
JP (1) JP2014125966A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016081780A1 (en) * 2014-11-19 2016-05-26 Pinnacle Engines, Inc. Insulated engine
US9840950B2 (en) 2013-06-27 2017-12-12 Toyota Jidosha Kabushiki Kaisha Oil pan
CN109252912A (zh) * 2018-09-26 2019-01-22 潍柴动力股份有限公司 一种油底壳及发动机

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011226394A (ja) 2010-04-20 2011-11-10 Toyota Motor Corp 二槽式オイルパン

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54108831U (de) * 1978-01-19 1979-07-31
JPH0534385Y2 (de) * 1987-01-29 1993-08-31
JPH05306654A (ja) * 1992-04-30 1993-11-19 Isuzu Motors Ltd オイルパン
JPH07279756A (ja) * 1994-04-15 1995-10-27 Mitsubishi Motors Corp オイルパンの遮音構造
JP2002130483A (ja) * 2000-10-26 2002-05-09 Toyota Industries Corp ３部品合わせ面のシール構造
JP4538213B2 (ja) * 2003-10-10 2010-09-08 日産自動車株式会社 液状ガスケットを用いたシール構造
JP2006125199A (ja) * 2004-10-26 2006-05-18 Toyota Motor Corp オイルパン構造
JP2006249951A (ja) * 2005-03-08 2006-09-21 Toyota Motor Corp エンジン

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2011226394A (ja) 2010-04-20 2011-11-10 Toyota Motor Corp 二槽式オイルパン

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9840950B2 (en) 2013-06-27 2017-12-12 Toyota Jidosha Kabushiki Kaisha Oil pan
WO2016081780A1 (en) * 2014-11-19 2016-05-26 Pinnacle Engines, Inc. Insulated engine
CN109252912A (zh) * 2018-09-26 2019-01-22 潍柴动力股份有限公司 一种油底壳及发动机

Also Published As

Publication number Publication date
JP2014125966A (ja) 2014-07-07
EP2749741A3 (de) 2015-08-05

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