EP2404051A1 - Dispositif bimatière, carter et véhicule équipes de ce dispositif et procédé fabrication de ce dispositif - Google Patents
Dispositif bimatière, carter et véhicule équipes de ce dispositif et procédé fabrication de ce dispositifInfo
- Publication number
- EP2404051A1 EP2404051A1 EP10708349A EP10708349A EP2404051A1 EP 2404051 A1 EP2404051 A1 EP 2404051A1 EP 10708349 A EP10708349 A EP 10708349A EP 10708349 A EP10708349 A EP 10708349A EP 2404051 A1 EP2404051 A1 EP 2404051A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- insert
- pin
- chamfer
- bore
- plane
- 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
Links
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
- F02F7/0043—Arrangements of mechanical drive elements
- F02F7/0053—Crankshaft bearings fitted in the crankcase
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49231—I.C. [internal combustion] engine making
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T403/00—Joints and connections
- Y10T403/47—Molded joint
Definitions
- the invention relates to a two-component device comprising an insert and a workpiece.
- the invention also relates to a housing and a vehicle equipped with this device and a method of manufacturing this device.
- Known two-component devices comprise an insert, a part made of a different material of the insert, this insert and this part being assembled by molding one around the other, the interface between the insert and the part defining at least one joining plane, and a bore for receiving a pin, formed in this device and passing through the joint plane, this bore having an entry chamfer for guiding the pin to a fitting section of this pin.
- crankcase a crankcase of a motor is divided into two parts respectively called “crankcase” and “crankcase cap” or “crankcase”.
- the cap housing includes cast iron inserts forming bearings for the crankshaft.
- Each insert is embedded in an aluminum part that forms the frame of the hat housing. This assembly of the insert and the aluminum part is obtained by molding the aluminum around the insert.
- the cast iron has metallurgical characteristics which are different from those of the aluminum part.
- cast iron and aluminum do not have the same melting point
- the invention aims to overcome these problems by providing an improved device to facilitate the fitting of the pin in the bore.
- the chamfer input allows a slight lateral movement of the pin during its introduction into the bore. This lateral movement allows to guide and correctly position the pin before tightening in the fitting section.
- the input chamfer has a diameter strictly greater than the fitting section in which the pin is clamped and therefore to the diameter of the pin.
- the input chamfer extends beyond the join plane.
- the diameter of the bore is strictly greater than the diameter of the pin to be introduced. Under these conditions, even if there is a slight shoulder protruding inside the bore at the joint plane, it does not prevent the passage of the pin because the deflection lateral is sufficient. Therefore, in the above device, galling of the pin when introduced into the bore is avoided. Defects of the mounting machine and damage to the engine equipped with this device are also reduced or eliminated.
- the difference between the largest transverse widths of the fitting section and the input chamfer is at least greater than 0.05 mm and preferably greater than 0.5 mm;
- the insert is made of cast iron and the aluminum part
- the device also comprises the pin clamped in the bore, this pin being made of a material whose hardness is less than or equal to the hardness of at least one of the materials used to produce the insert and the workpiece;
- the insert forms a bearing for a crankshaft of a combustion engine and the part forms part of a housing of this combustion engine.
- the invention also relates to a casing of a combustion engine of a vehicle equipped with the device above.
- the invention also relates to a vehicle comprising this housing.
- the invention also relates to a method of manufacturing this two-component device comprising machining an input chamfer so that the input chamfer extends beyond the plane of join.
- FIG. 1 is a diagrammatic sectional illustration of a vehicle equipped with a combustion engine casing
- FIG. 2 is a diagrammatic sectional illustration of a bore made in the casing of FIG. 1 to receive a centering pin
- FIG. 3 is an enlargement of a detail of FIG.
- FIG. 4 is a diagrammatic and perspective illustration of a casing cover of the casing of FIG. 1, and
- FIG. 5 is a flowchart of a method for manufacturing and mounting the casing of FIG. 1.
- FIG. 1 shows a vehicle 2 equipped with a casing 4 of a combustion engine.
- the vehicle 2 is shown schematically by a dotted rectangle.
- This vehicle 2 is for example a motor vehicle such as a car.
- the casing 4 comprises an upper portion 6 called “cylinder block” and a lower portion 8 called “casing cap”. These upper and lower parts are joined to one another at a substantially horizontal assembly plane 10 in FIG.
- the cylinder block is conventional and will not be described here in more detail.
- the cap casing 8 comprises an insert 12 embedded without any degree of freedom in a shell 14.
- the insert 12 forms a bearing of a crankshaft of the combustion engine to be received in the housing 4.
- the upper part of the insert 12 defines a face 16 in the form of a semicircle. This face 16 is intended to receive the crankshaft rotationally.
- the insert 12 is made of a very hard material such as cast iron.
- the insert 12 is traversed vertically by two holes 18 and 20 of attachment. These holes 18 and 20, when the cap and cylinder housings are assembled, extend beyond the assembly plane 10 inside the cylinder block 6. The ends of these holes 18 and 20 located inside the housing cylinder 6 are threaded. Indeed, these holes 18 and 20 are intended to receive screws fixing the cap housing on the cylinder block.
- the shell 14 is made of a less hard material than that used to make the insert 12.
- the shell 14 is made of aluminum.
- bores 26, 28 are also visible. These bores 26 and 28 are hollowed vertically first in the shell 14 and then in the insert 12 to end in the cylinder block 6. These bores 26, 28 extend along respective vertical axes 30, 32.
- bores 26 and 28 are identical and only the bore 26 will be described here in detail.
- the bore 26 extends from bottom to top. It therefore has an opening 34 through which must be introduced the centering pin located at the bottom. Then, going up from this opening 34, the bore 26 has a chamfer 36 input which is extended by a fitting section 38.
- the chamfer 36 is designed to guide the pin introduced and to align the axis of this pin on the axis 30 before its introduction into the section 38.
- the inner diameter of the chamfer 36 decreases progressively from the diameter of the opening 34 up to the diameter of section 38.
- the diameter of the chamfer 36 decreases in steps.
- the section 38 is intended to retain by clamping the pin inserted into the bore 26.
- the diameter of the section 38 is chosen to allow a fitting force of the pin.
- the diameter of the section 38 is equal to the diameter of the pin to be introduced.
- the bore 26 passes through the interface 24 between the shell 14 and the insert 12 at a joint plane 40.
- this plane 40 is perpendicular to the axis 30.
- An area E surrounding this plane 40 is shown in greater detail in FIG. 2.
- the chamfer 36 extends, upward, beyond the plane 40.
- the chamfer 36 has an inner diameter ⁇ 1 strictly greater than the inner diameter ⁇ 2 of the section 38.
- the diameter ⁇ 2 is equal to the diameter of the pin intended to be introduced into the bore 26.
- a zone F surrounding the intersection of the chamfer 36 with the insert 12 at the plane 40 is shown in enlarged form in FIG. 3.
- This shoulder 44 protrudes a few hundredths or a few tenths of millimeters inside the bore 26.
- the difference between the diameters ⁇ i and ⁇ 2 is chosen sufficiently large that the shoulder 44 can not cause seizing of the pin when it is inserted into the bore 26.
- the difference between the diameters ⁇ i and ⁇ 2 is chosen greater than
- Figure 4 shows the hat cover 8 in perspective. This perspective view shows that the cap housing 8 has several inserts identical to the insert 12.
- This phase 50 comprises a step 52 during which the aluminum is cast around the insert 12 in a mold to form the shell 14 on which is rigidly fixed this insert 12. During this molding step, it is assumed that an air film is present between the insert 12 and the shell 14, which prevents a perfect seal of the insert 12 on the shell 14 .
- the cylinder block 6 is assembled above the cap housing 8 and joined to one another via the assembly plane 10.
- step 56 the input chamfer 36 and the section 38 are made in such a way that the input chamfer extends beyond the plane 40.
- a step 62 after installing the crankshaft, the cylinder block 6 is centered on the cap housing 8 using, for example, centering pins. Then, during a step 64, centering pins are introduced into the bores 26 and 28 until their ends are fitted inside the sections 38. Therefore, these centering pins are held tight to the inside. inside the bores 26 and 28.
- a step 66 screws are inserted into the holes 18 and 20 to finalize the assembly of the cylinder and shaders.
- the cross section of the bores and centering pins is not necessarily circular.
- they may be cylindrical but with a director different from a circle.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR0951346A FR2942732B1 (fr) | 2009-03-04 | 2009-03-04 | Dispositif bimatiere, carter et vehicule equipes de ce dispositif et procede de fabrication de ce dispositif |
| PCT/FR2010/050253 WO2010100356A1 (fr) | 2009-03-04 | 2010-02-15 | Dispositif bimatière, carter et véhicule équipes de ce dispositif et procédé fabrication de ce dispositif |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2404051A1 true EP2404051A1 (fr) | 2012-01-11 |
| EP2404051B1 EP2404051B1 (fr) | 2014-12-31 |
Family
ID=41137620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP10708349.5A Active EP2404051B1 (fr) | 2009-03-04 | 2010-02-15 | Dispositif bimatière, carter et véhicule équipes de ce dispositif et procédé fabrication de ce dispositif |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20110318096A1 (fr) |
| EP (1) | EP2404051B1 (fr) |
| FR (1) | FR2942732B1 (fr) |
| WO (1) | WO2010100356A1 (fr) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8770170B2 (en) * | 2012-01-04 | 2014-07-08 | GM Global Technology Operations LLC | Bedplate assembly and method |
| JP6392753B2 (ja) | 2012-07-18 | 2018-09-19 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツングMerck Patent Gesellschaft mit beschraenkter Haftung | フッ素化界面活性剤 |
| DE102013212165A1 (de) * | 2013-06-26 | 2014-12-31 | Volkswagen Aktiengesellschaft | Gussgehäuse |
| US10895276B2 (en) | 2018-02-20 | 2021-01-19 | Dana Automotive Systems Group, Llc | Two material joint design |
Family Cites Families (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3423306C2 (de) * | 1984-06-23 | 1986-07-10 | Daimler-Benz Ag, 7000 Stuttgart | Paßverbindung zwischen zwei Gehäuseteilen |
| JPS6334345U (fr) * | 1986-08-20 | 1988-03-05 | ||
| CA1328588C (fr) * | 1987-05-15 | 1994-04-19 | Honda Giken Kogyo Kabushiki Kaisha (Also Trading As Honda Motor Co., Ltd .) | Moteur a combustion interne |
| US4989806A (en) * | 1989-09-21 | 1991-02-05 | Gigatek Memory Systems | Tape cartridge housing fastener system |
| JPH0482421U (fr) * | 1990-11-28 | 1992-07-17 | ||
| US5503490A (en) * | 1994-05-13 | 1996-04-02 | United Technologies Corporation | Thermal load relief ring for engine case |
| US5607565A (en) * | 1995-03-27 | 1997-03-04 | Coulter Corporation | Apparatus for measuring analytes in a fluid sample |
| US6422755B1 (en) * | 1996-05-03 | 2002-07-23 | Gkn Sinter Metals-Germantown, Inc. | Precisely repositioning powder metal components |
| DE19652049C1 (de) * | 1996-12-13 | 1998-07-02 | Hatz Motoren | Brennkraftmaschine und Verfahren zu deren Herstellung |
| JP2001200754A (ja) * | 2000-01-17 | 2001-07-27 | Honda Motor Co Ltd | エンジン |
| DE10040476C1 (de) * | 2000-08-18 | 2001-08-30 | Porsche Ag | Kurbelgehäuse für eine Brennkraftmaschine, insbesondere für einen Boxermotor |
| US20050145060A1 (en) * | 2001-02-22 | 2005-07-07 | Weaver Robert R. | Engine connecting rod for high performance applications and method of manufacture |
| JP2004025269A (ja) * | 2002-06-27 | 2004-01-29 | Suzuki Motor Corp | クランク軸支持装置の製造方法 |
| EP1788262B1 (fr) * | 2005-11-14 | 2008-07-16 | BRP-Rotax GmbH & Co. KG | Palier de vilebrequin |
| US7284528B2 (en) * | 2006-03-10 | 2007-10-23 | Ford Motor Company | Crank shaft support assembly |
-
2009
- 2009-03-04 FR FR0951346A patent/FR2942732B1/fr not_active Expired - Fee Related
-
2010
- 2010-02-15 EP EP10708349.5A patent/EP2404051B1/fr active Active
- 2010-02-15 US US13/254,392 patent/US20110318096A1/en not_active Abandoned
- 2010-02-15 WO PCT/FR2010/050253 patent/WO2010100356A1/fr not_active Ceased
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2010100356A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| FR2942732A1 (fr) | 2010-09-10 |
| WO2010100356A1 (fr) | 2010-09-10 |
| EP2404051B1 (fr) | 2014-12-31 |
| FR2942732B1 (fr) | 2011-03-18 |
| US20110318096A1 (en) | 2011-12-29 |
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