EP2228530A1 - Carter de moteur à combustion - Google Patents

Carter de moteur à combustion Download PDF

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Publication number
EP2228530A1
EP2228530A1 EP09155119A EP09155119A EP2228530A1 EP 2228530 A1 EP2228530 A1 EP 2228530A1 EP 09155119 A EP09155119 A EP 09155119A EP 09155119 A EP09155119 A EP 09155119A EP 2228530 A1 EP2228530 A1 EP 2228530A1
Authority
EP
European Patent Office
Prior art keywords
crankcase
struts
bearing
wall
cylinder
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.)
Ceased
Application number
EP09155119A
Other languages
German (de)
English (en)
Inventor
Ingo Lenz
Urban Morawitz
Bernd Steiner
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.)
Ford Global Technologies LLC
Original Assignee
Ford Global Technologies LLC
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 Ford Global Technologies LLC filed Critical Ford Global Technologies LLC
Priority to EP09155119A priority Critical patent/EP2228530A1/fr
Priority to CN201010133568.2A priority patent/CN101832196B/zh
Publication of EP2228530A1 publication Critical patent/EP2228530A1/fr
Ceased legal-status Critical Current

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Classifications

    • 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
    • F02F7/0043—Arrangements of mechanical drive elements
    • F02F7/0053—Crankshaft bearings fitted in the crankcase
    • 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
    • F02F7/0002—Cylinder arrangements
    • F02F7/0007—Crankcases of engines with cylinders in line

Definitions

  • the invention relates to a crankcase for a reciprocating engine according to the preamble of claim 1.
  • Both the EP 0 459 428 A1 as well as the EP 0 818 620 B1 show how a crankshaft bearing over a composite of bands, straps and struts with the crankcase can be made very stiff and lightweight.
  • the object of the invention is therefore to optimize a crankcase of an internal combustion engine with respect to rigidity and in particular noise behavior on.
  • a crankcase for a reciprocating engine includes bearing assemblies for receiving a crankshaft, which is connected per cylinder unit via a connecting rod with a piston which is movable in a cylinder and wherein the cylinder is covered by a cylinder head.
  • Each bearing assembly has a bearing body integrally connected to the crankcase, which has a recess for receiving the crankshaft together with a bolted to the bearing body bearing cap.
  • Each bearing body is with the Crankcase connected via a number of struts, wherein first struts are arranged in the axial extension of the screws of the bearing caps and extending to the cylinder block, wherein second struts extend from the bearing body to a region of a ⁇ lwannenflansches and wherein third struts are as intermediate stiffeners to the extend the respective crankcase wall. It thus span between the connecting portions of the first and third and second and third struts of a first and a second bearing assembly with the crankcase surface areas of the crankcase. To increase the rigidity and strength, according to the invention, these resulting surface areas are cambered in at least one direction, preferably along the longitudinal axis of the internal combustion engine.
  • the surface areas mentioned in both directions d. H. along the longitudinal axis of the internal combustion engine and transversely cambered.
  • the third struts in such a way that they halve the distance between the first and second struts.
  • the connection of the third struts with the crankcase takes place approximately centrally between the connection of the crankcase walls to the cylinder block and the formation of the crankcase to a ⁇ lwannenflansch.
  • approximately the same surface area results for the surfaces resulting between the connecting regions of the first and third struts and the surfaces resulting between the connecting regions of the second and third struts.
  • further third struts for supporting the bearing assemblies can be arranged on the crankcase wall.
  • the distance between the first and third struts can not only be halved, but z. B. divided or quartered. It is inventively possible to reinforce even a crankcase side by further third struts. Thus, an unequal number of struts per crankcase side can certainly be provided.
  • crankcase wall or the crankcase walls between the connection points of the first, second and third struts are preferably additionally reinforced by ribs. Both ribs along the longitudinal axis of the internal combustion engine (longitudinal ribs) or transversely thereto (transverse ribs) can be arranged. A combination of longitudinal and transverse ribs makes sense.
  • the openings between the struts, at least partially z. B. be closed by thin walls. This gives additional stiffness without significantly increasing the weight. It is also conceivable to at least partially close the area between the first struts, z. B. by a thin wall.
  • oil passages are provided for the return of the lubricating oil from the cylinder head into the oil pan. These oil passages run inside or outside the cylinder block and may at least partially continue to either inside or outside of the crankcase. According to the invention, these oil channels can be used in addition to the reinforcement / stiffening of a crankcase.
  • the inventive at least one oil passage is formed as a hollow profile and integrally formed as additional reinforcement with the crankcase.
  • This reinforcement can be used in addition to or as an alternative to the aforementioned ribs.
  • this at least one oil passage may be formed on the outer wall of the crankcase. Likewise, however, the at least one oil passage may be at least partially formed on the inner wall of the crankcase.
  • FIG. 1 schematically shows a part of an internal combustion engine 1.
  • a crankcase 4 consisting of a cylinder block 2 and containing integrally formed with the cylinder block 2, the two crankcase walls 4a.
  • the crankcase walls 4 a end in a respective ⁇ lwannenflansch 5, which is suitable for fixing an oil pan in a known manner.
  • the bearing assembly 6 according to the invention consists of a bearing body 13 and a bearing cap 8, which together form a recess 7 for receiving a crankshaft.
  • the bearing cap 8 is usually fastened to the bearing body 13 with two screws (not shown here).
  • Each bearing assembly 6 is connected to first struts 9 with the cylinder block 2.
  • Each bearing assembly 6 is supported in the direction of the oil pan flange 5 via second struts 10.
  • each bearing assembly 6 is connected via third struts 11 with the crankcase wall 4a and the crankcase walls 4a. If required, further third struts 11 can be arranged in order to better divide the forces and to divert them into the crankcase 4. If the connection points or connection areas of the first, second and third struts 9, 10, 11 with the crankcase wall 4 a are conceptually connected, surfaces 12 are stretched. According to the invention, these surfaces 12 are cambered at least in one direction. This significantly increases the rigidity of the crankcase walls 4a and thus of the overall system.
  • the resulting surface areas 12 should have approximately the same surface area.
  • the third struts 11 are connected approximately to the housing walls 4a in the middle between the first and second struts 9, 10. For several third struts 11 per side of a bearing assembly 6, this applies analogously.
  • the openings 14 between the first and third and / or the second and third struts 9, 10, 11 may also be at least partially closed by thin walls. This significantly increases the rigidity of the overall system.
EP09155119A 2009-03-13 2009-03-13 Carter de moteur à combustion Ceased EP2228530A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP09155119A EP2228530A1 (fr) 2009-03-13 2009-03-13 Carter de moteur à combustion
CN201010133568.2A CN101832196B (zh) 2009-03-13 2010-03-09 用于往复活塞机器的曲轴箱

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP09155119A EP2228530A1 (fr) 2009-03-13 2009-03-13 Carter de moteur à combustion

Publications (1)

Publication Number Publication Date
EP2228530A1 true EP2228530A1 (fr) 2010-09-15

Family

ID=40933199

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09155119A Ceased EP2228530A1 (fr) 2009-03-13 2009-03-13 Carter de moteur à combustion

Country Status (2)

Country Link
EP (1) EP2228530A1 (fr)
CN (1) CN101832196B (fr)

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515112A (en) * 1981-10-28 1985-05-07 Toyota Jidosha Kabushiki Kaisha Aluminum alloy cylinder block
JPS6218355U (fr) * 1985-07-19 1987-02-03
JPS62150562U (fr) * 1986-03-17 1987-09-24
JPH01119863U (fr) * 1988-02-10 1989-08-14
JPH0213151U (fr) * 1988-06-30 1990-01-26
JPH0349307U (fr) * 1989-09-20 1991-05-14
EP0459428A1 (fr) 1990-05-28 1991-12-04 Klöckner-Humboldt-Deutz Aktiengesellschaft Moteur à combustion interne
DE4408137A1 (de) * 1992-09-12 1995-09-14 Bayerische Motoren Werke Ag Zylinderblock einer Brennkraftmaschine mit vorgeformter Zylindereinheit
JP2000170603A (ja) * 1998-12-10 2000-06-20 Yanmar Diesel Engine Co Ltd シリンダブロック高剛性構造
EP0818620B1 (fr) 1996-07-12 2001-11-21 DaimlerChrysler AG Carter d'un moteur à explosion interne

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4515112A (en) * 1981-10-28 1985-05-07 Toyota Jidosha Kabushiki Kaisha Aluminum alloy cylinder block
JPS6218355U (fr) * 1985-07-19 1987-02-03
JPS62150562U (fr) * 1986-03-17 1987-09-24
JPH01119863U (fr) * 1988-02-10 1989-08-14
JPH0213151U (fr) * 1988-06-30 1990-01-26
JPH0349307U (fr) * 1989-09-20 1991-05-14
EP0459428A1 (fr) 1990-05-28 1991-12-04 Klöckner-Humboldt-Deutz Aktiengesellschaft Moteur à combustion interne
DE4408137A1 (de) * 1992-09-12 1995-09-14 Bayerische Motoren Werke Ag Zylinderblock einer Brennkraftmaschine mit vorgeformter Zylindereinheit
EP0818620B1 (fr) 1996-07-12 2001-11-21 DaimlerChrysler AG Carter d'un moteur à explosion interne
JP2000170603A (ja) * 1998-12-10 2000-06-20 Yanmar Diesel Engine Co Ltd シリンダブロック高剛性構造

Also Published As

Publication number Publication date
CN101832196B (zh) 2014-09-17
CN101832196A (zh) 2010-09-15

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