EP2093395A1 - Ölwannenstruktur für motoren - Google Patents

Ölwannenstruktur für motoren Download PDF

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Publication number
EP2093395A1
EP2093395A1 EP07829706A EP07829706A EP2093395A1 EP 2093395 A1 EP2093395 A1 EP 2093395A1 EP 07829706 A EP07829706 A EP 07829706A EP 07829706 A EP07829706 A EP 07829706A EP 2093395 A1 EP2093395 A1 EP 2093395A1
Authority
EP
European Patent Office
Prior art keywords
base part
concave
oil pan
convex portions
engine
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.)
Granted
Application number
EP07829706A
Other languages
English (en)
French (fr)
Other versions
EP2093395A4 (de
EP2093395B1 (de
EP2093395B8 (de
Inventor
Yoshiaki Koyama
Yasuhiro Hisano
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.)
Honda Motor Co Ltd
Original Assignee
Honda Motor 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 Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of EP2093395A1 publication Critical patent/EP2093395A1/de
Publication of EP2093395A4 publication Critical patent/EP2093395A4/de
Publication of EP2093395B1 publication Critical patent/EP2093395B1/de
Application granted granted Critical
Publication of EP2093395B8 publication Critical patent/EP2093395B8/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01M2011/0008—Oilsumps with means for reducing vibrations
    • 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
    • F01M2011/002—Oilsumps with means for improving the stiffness
    • 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
    • F01M2011/0066—Oilsumps with passages in the wall, e.g. for axles or fluid passages

Definitions

  • the present invention relates to an oil pan structure for an engine in which a base face of an oil pan that is provided in a lower part of an engine cylinder block and stores engine oil includes a shallow base part and a deep base part, a plurality of first concave-convex portions extending in parallel to each other are formed on the shallow base part, and a plurality of second concave-convex portions extending in parallel to each other are formed on the deep base part.
  • an oil pan provided in a lower part of an engine is a member formed by shaping a thin metal plate into a container shape, when vibration of an engine main body is transmitted thereto, a flat portion of the oil pan resonates, and there is the problem that this causes noise.
  • Patent Publication 1 by forming a corrugated concave-convex part on a wall face of the oil pan to thus enhance stiffness, resonance of the wall face is suppressed, thereby reducing the noise.
  • the concave-convex part is formed in an annular shape so as to encircle the side walls of the oil pan, it is necessary for engine oil flowing down from an engine main body to traverse the concave-convex part; there is thus a possibility that it will become difficult for the engine oil to return to the base part of the oil pan, and impurities contained in the engine oil will become trapped in the concave-convex part and be difficult to be discharged.
  • the present invention has been accomplished in the light of the above-mentioned circumstances, and it is an object thereof to smoothly guide engine oil or impurities contained in the engine oil to a base part of an oil pan while suppressing resonance of a wall face of the oil pan.
  • an oil pan structure for an engine in which a base face of an oil pan that is provided in a lower part of a cylinder block of an engine and stores engine oil comprises a shallow base part and a deep base part, a plurality of first concave-convex portions extending in parallel to each other are formed on the shallow base part, and a plurality of second concave-convex portions extending in parallel to each other are formed on the deep base part, wherein an imaginary line linking equal heights of the first concave-convex portions extends toward the deep base part, the deep base part having a rectangular shape with long sides and short sides, and an imaginary line linking equal heights of the second concave-convex portions extends in a direction parallel to the short side.
  • a drain hole is formed on the long side of the deep base part.
  • a flat part extending from the drain hole toward the shallow base part is formed on the deep base part, and the second concave-convex portions stop at the flat part.
  • an inclined face is formed in an end part, close to the drain hole, of a connecting wall connecting the shallow base part and the deep base part, the inclined face projecting into the interior of the oil pan and being inclined from the shallow base part toward the deep base part.
  • the plurality of first concave-convex portions and the plurality of second concave-convex portions each extending in parallel to each other are formed on the shallow base part and the deep base part respectively of the base face of the oil pan, noise can be reduced by enhancing the plane stiffness of the oil pan and suppressing resonance.
  • the imaginary line linking equal heights of the first concave-convex portions of the shallow base part extends toward the deep base part, engine oil and impurities in the shallow base part can be guided to the deep base part and since, among the long side and the short side of the rectangular deep base part, the imaginary line linking equal heights of the second concave-convex portions extends in a direction parallel to the short side, the length of the second concave-convex portions can be minimized, and this enables it to be made difficult for engine oil and impurities to accumulate therein.
  • the drain hole is formed on the long side of the deep base part of the oil pan, compared with a case in which a drain hole is formed in a central part of a deep base part, not only is the draining operation easy, but also engine oil and impurities can be guided smoothly toward the drain hole by means of the second concave-convex portions, which extend in a direction parallel to the short side of the deep base part.
  • the flat part at which the second concave-convex portions stop is formed in the deep base part so as to extend from the drain hole toward the shallow base part, engine oil and impurities that have flowed along the second concave-convex portion can be guided effectively to the drain hole and discharged.
  • the inclined face which is inclined from the shallow base part toward the deep base part so as to project into the interior of the oil pan, is formed on an end part, close to the drain hole, of the connecting wall connecting the shallow base part and the deep base part of the oil pan, engine oil and impurities can be guided effectively from the shallow base part to the drain hole by means of the inclined face and the deep base part and discharged.
  • FIG. 1 to FIG. 7 show a mode for carrying out the present invention.
  • a crankshaft 16 joined to an upper part of a cylinder block 11 of an automobile engine E are a cylinder head 12 and a head cover 13, joined to a lower part of the cylinder block are a lower block 14 and an oil pan 15, and rotatably supported on mating faces of the cylinder block 11 and the lower block 14 is a crankshaft 16.
  • the engine E is mounted on a vehicle body in an attitude in which its upper part is inclined toward the rear of the vehicle body.
  • Mating faces of a lower face of the lower block 14 and an upper face of the oil pan 15 are therefore inclined so that the side toward the front of the vehicle body is higher. Since the base face of the oil pan 15, in which engine oil is stored, is substantially horizontal, the height of the front part of the oil pan 15 is greater than the height of the rear part thereof.
  • a flange 18 is formed on the periphery of the oil pan 15, the flange 18 being joined to the lower face of the lower block 14 of the engine E via a plurality of bolts 17. Furthermore, a parting face 19 formed on one end part of the oil pan 15 is joined to a lower part of a transmission 21 (see FIG. 2 ) via two bolts 20 and 20.
  • the oil pan 15 includes a shallow base part 22 connected to the transmission 21 and a deep base part 23 connected to the shallow base part 22 on the opposite side to the transmission 21, the shallow base part 22 and the deep base part 23 are connected via a connecting wall 24, and an exhaust pipe 25 runs through a space beneath the shallow base part 22, the exhaust pipe 25 (see FIG. 1 ) extending downward from the cylinder head 12 and bending rearward.
  • the beads form first concave-convex portions 26a to 26d of the present invention, and an imaginary line ⁇ (see FIG. 3 ) linking equal heights thereof extends in the direction in which the transmission 21 and the deep base part 23 are joined (direction of the crankshaft 16).
  • the deep base part 23 of the oil pan 15 is formed in a substantially rectangular shape with long sides along the direction of the crankshaft 16 and short sides extending in a direction perpendicular thereto, one of the short sides being connected to the shallow base part 22 via the connecting wall 24.
  • Formed on the deep base part 23 are seven ridge-shaped beads protruding toward the interior of the oil pan 15.
  • the beads form second concave-convex portions 27a to 27g of the present invention, and an imaginary line ⁇ (see FIG. 3 ) linking equal heights thereof extends in a direction along the short side, that is, a direction perpendicular to the first concave-convex portions 26a to 26d.
  • the three portions 27a to 27c that are on the side close to the shallow base part 22 are relatively long, the four portions 27d to 27g that are on the side distant from the shallow base part 22 are relatively short, and among the four short portions 27d to 27g, one portion 27g and another portion 27d are aligned on one straight line.
  • a drain hole 28 is formed on the rear long side, and this drain hole 28 is opened and closed by a detachable drain bolt 29.
  • a flat part 30 (see hatched parts in FIG. 2 and FIG. 3 ) is formed on a base face of the deep base part 23, the second concave-convex portions 27a to 27g not being present on the flat part 30 from the periphery of the drain hole 28 toward the connecting wall 24.
  • a circular oil level sensor mounting part 31 protrudes toward the interior of the oil pan 15 from the base face of the deep base part 23, of which two sides being surrounded by the second concave-convex portions 27d to 27g, and an oil level sensor mounting hole 32 opens in a central part of the oil level sensor mounting part 31.
  • a harness-housing recess 33 is formed in a groove shape from the oil level sensor mounting part 31 toward a corner on the opposite side to the transmission 21.
  • An oil level sensor 34 includes a disk-shaped mounting portion 34a, a detection portion 34b projecting from the mounting portion 34a toward the interior of the oil pan 15, and a harness 34c extending from the mounting portion 34a.
  • the mounting portion 34a is fixed to the oil level sensor mounting part 31 via three bolts 35 in a state in which the detection portion 34b is inserted into the oil pan 15 from the oil level sensor mounting hole 32, and a cover 36 covering the oil level sensor mounting part 32 and the harness-housing recess 33 is fixed to the oil pan 15 via four bolts 37 in a state in which the harness 34c is housed in the harness-housing recess 33.
  • an inclined face 38 is formed from the connecting wall 24 to the flat part 30 of the deep base part 23, the inclined face 38 projecting toward the interior of the oil pan 15.
  • a tool channel 39 is formed in a lower face of the oil pan corresponding to the inclined face 38, and inserting a wrench 40 by utilizing this tool channel 39 enables one of the two bolts 20 and 20 securing the oil pan 15 to the transmission 21 to be efficiently tightened.
  • the oil pan 15 includes the plurality of first concave-convex portions 26a to 26d on the shallow base part 22 and the plurality of second concave-convex portions 27a to 27g on the deep base part 23, the plane stiffness thereof is enhanced, and the occurrence of resonance due to vibration of the engine E can be prevented, thus contributing to a reduction in noise.
  • Engine oil that has lubricated a valve operating mechanism, sliding parts of a piston and a cylinder, a journal of the crankshaft 16, etc. is returned to the base part of the oil pan 15 by virtue of gravity, and when the engine oil is drained via the drain hole 28 by removing the drain bolt 29 for engine oil change, since engine oil that has collected in the shallow base part 22, which is at a high position, flows smoothly along the first concave-convex portions 26a to 26d, and flows from the end thereof into the deep base part 23, which is at a low position, along the connecting wall 24, engine oil or impurities, etc. contained therein do not accumulate by being trapped in the valleys of the concave-convex portions of the shallow base part 22 (see FIG. 5 ).
  • the drain hole 28 is provided so as to point in the horizontal direction on the long side of the rectangular deep base part 23 on the side toward the rear of the vehicle body, compared with a case in which it is provided so as to point in the vertical direction in a central part of the deep base part 23, attachment and detachment of the drain bolt 29 is easy. Since the engine oil in the deep base part 23 flows toward the drain hole 28 side along the second concave-convex portions 27a to 27g along the direction of the short side, engine oil or impurities, etc. contained therein do not accumulate by being trapped in the valleys of the concave-convex portions of the deep base part 23.
  • these second concave-convex portions 27a to 27g are disposed in parallel to the short side of the rectangular deep base part 23, the length of the second concave-convex portions 27a to 27g can be minimized, and this enables it to be made as difficult as possible for engine oil, impurities, etc. to accumulate.
  • the deep base part 23 of the oil pan 15 has its long side coinciding with the direction along the crankshaft 16, but its short side may coincide with the direction along the crankshaft 16.
  • the direction of the first concave-convex portions 26a to 26d is parallel to the direction of the second concave-convex portions 27a to 27g, and discharge of engine oil or impurities can be carried out more smoothly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP07829706.6A 2006-12-15 2007-10-12 Ölwannenstruktur für motoren Not-in-force EP2093395B8 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2006337811A JP4625442B2 (ja) 2006-12-15 2006-12-15 エンジンのオイルパン構造
PCT/JP2007/069970 WO2008072416A1 (ja) 2006-12-15 2007-10-12 エンジンのオイルパン構造

Publications (4)

Publication Number Publication Date
EP2093395A1 true EP2093395A1 (de) 2009-08-26
EP2093395A4 EP2093395A4 (de) 2010-01-06
EP2093395B1 EP2093395B1 (de) 2013-05-01
EP2093395B8 EP2093395B8 (de) 2013-08-14

Family

ID=39511447

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07829706.6A Not-in-force EP2093395B8 (de) 2006-12-15 2007-10-12 Ölwannenstruktur für motoren

Country Status (3)

Country Link
EP (1) EP2093395B8 (de)
JP (1) JP4625442B2 (de)
WO (1) WO2008072416A1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105065079A (zh) * 2015-08-10 2015-11-18 奇瑞汽车股份有限公司 一种优化型发动机油底壳
EP3361081A4 (de) * 2015-11-06 2018-10-31 Pacific Industrial Co., Ltd. Ölwanne und verfahren zur herstellung einer ölwanne
DE102009055138B4 (de) * 2009-12-22 2020-03-05 Elringklinger Ag Ölwanne mit einem nach oben versetzten Bodenabschnitt
CN111206976A (zh) * 2018-11-21 2020-05-29 北汽福田汽车股份有限公司 发动机油底壳、发动机和车辆

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5261353B2 (ja) * 2009-11-19 2013-08-14 トヨタ自動車株式会社 オイルパン
JP6138531B2 (ja) * 2013-03-18 2017-05-31 本田技研工業株式会社 発電機用内燃機関
JP6998407B2 (ja) * 2020-01-07 2022-01-18 本田技研工業株式会社 オイルパン
JP7375263B2 (ja) * 2020-03-03 2023-11-08 ジヤトコ株式会社 変速機ケースのオイル貯留構造
JP7043536B2 (ja) 2020-03-30 2022-03-29 本田技研工業株式会社 内燃機関のオイルパン

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57144248U (de) * 1981-03-05 1982-09-10
JPS63158513U (de) * 1987-04-06 1988-10-18
JPS63183357U (de) * 1987-05-13 1988-11-25
JPH0783068A (ja) * 1993-09-16 1995-03-28 Nissan Motor Co Ltd 車両用パワープラント構造

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5385234A (en) * 1977-01-05 1978-07-27 Toyota Motor Corp Oil pan with projections
JPS5792854U (de) 1980-11-28 1982-06-08
JPS60120209U (ja) * 1984-01-23 1985-08-14 日産自動車株式会社 オイルパン
JPS63158513A (ja) 1987-12-10 1988-07-01 Hitachi Cable Ltd 走水防止形光ファイバケーブル
JPH046509U (de) * 1990-04-27 1992-01-21
JPH0821303A (ja) * 1994-07-01 1996-01-23 Yorozu:Kk 自動車用オイルパン
JP3656409B2 (ja) * 1998-06-16 2005-06-08 日産自動車株式会社 内燃機関のオイルパンのドレン構造
JP4600115B2 (ja) * 2005-03-28 2010-12-15 日産自動車株式会社 オイルパン装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57144248U (de) * 1981-03-05 1982-09-10
JPS63158513U (de) * 1987-04-06 1988-10-18
JPS63183357U (de) * 1987-05-13 1988-11-25
JPH0783068A (ja) * 1993-09-16 1995-03-28 Nissan Motor Co Ltd 車両用パワープラント構造

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008072416A1 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009055138B4 (de) * 2009-12-22 2020-03-05 Elringklinger Ag Ölwanne mit einem nach oben versetzten Bodenabschnitt
CN105065079A (zh) * 2015-08-10 2015-11-18 奇瑞汽车股份有限公司 一种优化型发动机油底壳
EP3361081A4 (de) * 2015-11-06 2018-10-31 Pacific Industrial Co., Ltd. Ölwanne und verfahren zur herstellung einer ölwanne
US10934903B2 (en) 2015-11-06 2021-03-02 Pacific Industrial Co., Ltd. Oil pan and method for manufacturing oil pan
CN111206976A (zh) * 2018-11-21 2020-05-29 北汽福田汽车股份有限公司 发动机油底壳、发动机和车辆

Also Published As

Publication number Publication date
JP2008150974A (ja) 2008-07-03
EP2093395A4 (de) 2010-01-06
WO2008072416A1 (ja) 2008-06-19
JP4625442B2 (ja) 2011-02-02
EP2093395B1 (de) 2013-05-01
EP2093395B8 (de) 2013-08-14

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