WO2007028466A1 - Kolben für eine brennkraftmaschine - Google Patents
Kolben für eine brennkraftmaschine Download PDFInfo
- Publication number
- WO2007028466A1 WO2007028466A1 PCT/EP2006/007638 EP2006007638W WO2007028466A1 WO 2007028466 A1 WO2007028466 A1 WO 2007028466A1 EP 2006007638 W EP2006007638 W EP 2006007638W WO 2007028466 A1 WO2007028466 A1 WO 2007028466A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- region
- axis
- connecting walls
- insert
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/0009—Cylinders, pistons
- B22D19/0027—Cylinders, pistons pistons
-
- 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
- F02F3/00—Pistons
- F02F3/02—Pistons having means for accommodating or controlling heat expansion
- F02F3/04—Pistons having means for accommodating or controlling heat expansion having expansion-controlling inserts
- F02F3/08—Pistons having means for accommodating or controlling heat expansion having expansion-controlling inserts the inserts being ring-shaped
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
-
- 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
- F02F3/00—Pistons
-
- 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
- F02F3/00—Pistons
- F02F3/28—Other pistons with specially-shaped head
-
- 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
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
Definitions
- the invention relates to a piston for an internal combustion engine according to the features of the respective preamble of the independent claims.
- a piston for internal combustion engines is known from the generic EP 0 902 180 A2.
- the hubs are reset in the bolt axis direction so that the outer hub clearance is 60 to 65% of the piston diameter or less.
- the hub outer surfaces, which connect the two sliding surfaces have a linear (linear) course over the height of the sliding surfaces.
- the hub outer surfaces also called box walls
- the hub outer surfaces are not basically flat, but also curved both in sections parallel and perpendicular to the piston axis.
- the curvature of the surface in sections perpendicular to the piston axis is always the same for the whole surface of the box wall. This results in upward (in the direction of the piston head) decreasing distance of the box walls an upward decreasing width of the bearing sliding surface.
- the disadvantage here is that with the width of the box walls widening upwards, the potential of weight saving due to the undercut of the ring field in the bolt direction can not be fully utilized.
- the support of the piston crown is not optimal due to the box walls due to the lowering of the tensile stresses of the soil. In the upward (in the direction of the piston crown) decreasing distance of the box walls is lost to the upper edge of the shaft surface, which is required for the Kolbengerad Entry and the production of seizure safety.
- due to the lack of support of the ring field by the piston skirt high stresses in the transition areas arise between the piston skirt and the Ringfeldumguß.
- connecting walls are known in pistons, which are formed as mutually parallel planes or curved surfaces with only one radius of curvature and only one direction of curvature.
- An improvement provides a piston, as it is known from DE 101 45 589 A1. This has in the piston head on a Freiguss (undercut), which extends radially circumferentially behind the ring field. Although this advantage has the advantage of weight savings, but at the same time the disadvantage that the area of the piston crown is thereby weakened.
- the invention is therefore based on the object to provide a piston with which the described disadvantages are avoided.
- a reinforcement is provided in the region of the piston crown radially behind the ring field.
- This reinforcement has the advantage that it increases the piston crown area, in which the scree is located, in order to meet the loads resulting from the combustion temperatures and pressures during the operation of the piston in the cylinder chamber of an internal combustion engine. Since the clearance (undercut) is present in this area, this reinforcement is particularly advantageous and particularly important, especially as the shaft is freely suspended under the ring field and can not contribute to the reinforcement (support).
- the reinforcement is formed as an insert that inserted before casting a piston blank into the casting tool, fixed there and surrounded with molten casting.
- the insert is made of the same or different material than the material from which the piston blank is cast.
- the insert is one or more parts, preferably one-piece annular, formed.
- the multi-part design has the advantage that the insert can be arranged at the points behind the ring field and approximately at the height of the Freigusses, where a special reinforcement is to take place. It is particularly advantageous if the insert is integrally formed annular, so that it can be handled very easily when inserted into the casting tool. Moreover, this is one Particularly good continuous reinforcement, especially a radial support, given in the area of the ring field.
- the insert before insertion into the casting tool has an outer diameter which is smaller than or equal to the inner diameter of the casting tool at the point at which the insert is fixed.
- the inner diameter of the insert is greater than or equal to the outer diameter of the Freigusses.
- the crop (undercut) is formed by a correspondingly shaped molding (slide) of the casting tool, which is pulled out vertically, obliquely or at right angles to the Kolbenhubachse after solidification of the casting melt depending on the shape of the Freigusses.
- the insert according to the invention is designed so that it serves to reinforce the piston crown and after the production of the piston (pouring the piston blank, which is finished) appears on the radial surface of the piston in the region of the ring field.
- the axial height of the insert is selected so that it extends above and below at least one annular groove, preferably the uppermost annular groove, or may extend over a plurality of annular grooves. It is possible that the insert already before casting has a groove for receiving an oil ring or this groove (ring groove) is introduced during the finishing of the piston blank.
- the insert has a cooling channel forming one or more parts cooling channel plate, which is integrally formed on the insert.
- FIG. 1 shows a piston according to the invention in three-dimensional view
- Figure 2 shows a piston in the view from below into the interior of the piston
- FIG. 3 shows a piston in section along the piston axis.
- FIG. 1 shows a piston 1, which is in particular a light metal piston, in particular for an internal combustion engine.
- This piston 1 has a piston skirt 2 and a cylindrically shaped piston crown 3, which is particularly adapted to the type of internal combustion engine (diesel or gasoline engine).
- the piston head On the formation of the piston head, which may be arbitrary, it does not matter in this invention.
- pin bosses 4 are present, which are set back in the direction of a pin axis to a piston axis and are part of the piston skirt 2.
- the pin bosses 4 are located in two rear connection walls 5, which connect two opposite leg wall sections 7 together.
- a ring field 6 is provided in the piston head 3.
- the reference numeral 8 designates the lower edge of the connecting wall 5
- the reference numeral 9 designates the lower edge of the piston crown 3 and the annular field 6, respectively.
- the construction of the piston 1 is such that the curvature functions, their relative offset to each other in the bolt direction and the nature of their connection in the piston longitudinal direction is chosen so that surfaces of the shaft wall portions 7 with constant shaft width or 15 tapered upper or bottom shaft width result in the piston longitudinal direction ,
- Figure 2 shows to illustrate the invention, the view of the piston 1 from below, viewed in the interior of the piston 1 inside.
- the connecting walls 5 have in their peripheral lower edge 8 a convex radius of curvature, relative to an axis 10 (perpendicular to the pin axis) (solid line).
- the connecting walls 5 In the region of the lower edge 9 of the ring field 6, the connecting walls 5 have a concave radius of curvature with respect to the axis 10 (dashed line).
- Reference numeral 11 designates a projection (ring-field projection) of the lower edge of the ring field 6 beyond the connection walls 5, wherein this region is in particular at least partially hollowed out in order to realize a further weight saving.
- This hollowing of the projection 11 can also extend into the regions in which the skirt wall sections 7 are arranged, and possibly extend into the inner region of the ring field 6, ie, until just before the end of the piston crown 3.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008529486A JP2009507173A (ja) | 2005-09-08 | 2006-08-02 | 内燃機関に用いられるピストン |
EP06776553.7A EP1922479B1 (de) | 2005-09-08 | 2006-08-02 | Kolben für eine brennkraftmaschine |
US12/065,799 US8683913B2 (en) | 2005-09-08 | 2006-08-02 | Piston for an internal combustion engine |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005042857.6 | 2005-09-08 | ||
DE102005042857A DE102005042857A1 (de) | 2005-09-08 | 2005-09-08 | Kolben für eine Brennkraftmaschine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007028466A1 true WO2007028466A1 (de) | 2007-03-15 |
Family
ID=37076237
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2006/007638 WO2007028466A1 (de) | 2005-09-08 | 2006-08-02 | Kolben für eine brennkraftmaschine |
Country Status (7)
Country | Link |
---|---|
US (1) | US8683913B2 (de) |
EP (1) | EP1922479B1 (de) |
JP (1) | JP2009507173A (de) |
KR (1) | KR20080068805A (de) |
DE (1) | DE102005042857A1 (de) |
PL (1) | PL1922479T3 (de) |
WO (1) | WO2007028466A1 (de) |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9238283B2 (en) * | 2008-07-24 | 2016-01-19 | Ks Kolbenschmidt Gmbh | Friction welded steel piston having optimized cooling channel |
DE102008055848A1 (de) | 2008-11-04 | 2010-05-06 | Ks Kolbenschmidt Gmbh | Kühlkanalkolben einer Brennkraftmaschine mit einem Verschlusselement, das den Kühlkanal verschließt |
WO2012001887A1 (en) * | 2010-06-29 | 2012-01-05 | Kolbenschmidt K.K. | Piston for spark-ignition engine |
GB2492101B (en) * | 2011-06-21 | 2014-12-10 | Jaguar Land Rover Ltd | Apparatus and method for embedding an element |
DE102011115639A1 (de) | 2011-09-28 | 2013-03-28 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102011115048A1 (de) * | 2011-10-07 | 2013-04-11 | Mahle International Gmbh | Schmiedevorrichtung zur Herstellung eines Kolbenrohlings und Verfahren zur Herstellung des Kolbenrohlings unter Verwendung der Schmiedevorrichtung |
WO2013138261A1 (en) | 2012-03-12 | 2013-09-19 | Federal-Mogul Corporation | Engine piston |
US8969197B2 (en) * | 2012-05-18 | 2015-03-03 | International Business Machines Corporation | Copper interconnect structure and its formation |
JP2016535191A (ja) * | 2013-10-14 | 2016-11-10 | カーエス コルベンシュミット ゲゼルシャフト ミット ベシュレンクテル ハフツングKS Kolbenschmidt GmbH | 内燃機関用のピストン及びその製造方法 |
JP6147289B2 (ja) * | 2015-04-08 | 2017-06-14 | 三菱電機株式会社 | 自動二輪車の吸入空気量推定装置 |
DE102015220261A1 (de) * | 2015-10-19 | 2017-04-20 | Mahle International Gmbh | Kolben |
US10294887B2 (en) | 2015-11-18 | 2019-05-21 | Tenneco Inc. | Piston providing for reduced heat loss using cooling media |
US10648425B2 (en) | 2017-08-23 | 2020-05-12 | Tenneco Inc. | Piston with broad ovate gallery |
USD897373S1 (en) * | 2018-09-22 | 2020-09-29 | Chaoming Li | Piston |
WO2020086216A1 (en) * | 2018-10-26 | 2020-04-30 | Ted Hollinger | Systems, devices, and/or methods for improving engine efficiency |
USD880529S1 (en) * | 2019-06-06 | 2020-04-07 | Chenggang Liu | Piston |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE901104C (de) * | 1949-11-10 | 1954-01-07 | Fairchild Engine And Airplane | Verbundgussstueck und Verfahren zu dessen Herstellung |
JPS60166158A (ja) * | 1984-02-07 | 1985-08-29 | Izumi Jidosha Kogyo Kk | 内燃機関用ピストンの製造方法 |
EP0877160A1 (de) * | 1997-05-08 | 1998-11-11 | Zollner Corporation | Kühlkanal für Kolben |
DE10145589A1 (de) * | 2001-09-15 | 2003-04-24 | Ks Kolbenschmidt Gmbh | Kolben für eine Brennkraftmaschine |
US20030140885A1 (en) * | 2002-01-30 | 2003-07-31 | Grassi John A. | Ring band for a piston |
Family Cites Families (30)
Publication number | Priority date | Publication date | Assignee | Title |
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US2685729A (en) | 1951-05-10 | 1954-08-10 | Frank A Bower | Method of making composite piston structures |
DE1898220U (de) * | 1962-12-21 | 1964-08-06 | Mahle Kommandit Ges | Leichtmetallkolben fuer brennkraftmaschinen. |
US3626815A (en) * | 1970-05-25 | 1971-12-14 | American Motors Corp | Piston |
DE2026272C3 (de) | 1970-05-29 | 1975-03-27 | Maschinenfabrik Augsburg-Nuernberg Ag, Zweigniederl. Nuernberg, 8500 Nuernberg | Kolben für Brennkraftmaschinen |
DE2027649A1 (de) | 1970-06-05 | 1971-12-09 | Karl Schmidt Gmbh, 7107 Neckarsulm | Leichtmetallkolben für Verbrennungskraftmaschinen |
DE2230722C3 (de) * | 1972-06-23 | 1981-12-24 | Mahle Gmbh, 7000 Stuttgart | Brennkraftmaschinenkolben, insbesondere für Dieselmaschinen, mit einem Unterteil und einem mit diesem lösbar verbundenen Oberteil |
DE2537182A1 (de) | 1975-08-21 | 1977-03-03 | Motoren Turbinen Union | Kolben |
JPS5231213A (en) | 1976-09-16 | 1977-03-09 | Kawasaki Heavy Ind Ltd | Piston crown |
GB8413800D0 (en) * | 1984-05-30 | 1984-07-04 | Ae Plc | Manufacture of pistons |
JPS62233456A (ja) | 1986-04-01 | 1987-10-13 | Izumi Jidosha Kogyo Kk | 内燃機関用ピストン |
BR8700527A (pt) * | 1987-01-29 | 1988-08-16 | Metal Leve Sa | Processo de fabricacao de embolo e embolo para motores de combustao interna |
JPH0451019Y2 (de) * | 1987-02-06 | 1992-12-01 | ||
SU1518562A1 (ru) | 1987-12-31 | 1989-10-30 | Предприятие П/Я А-1877 | Поршень высокофорсированного четырехтактного дизел |
US5076225A (en) * | 1989-12-28 | 1991-12-31 | Toyota Jidosha Kabushiki Kaisha | Piston for an internal combustion engine |
DE4010474A1 (de) * | 1990-03-31 | 1991-10-02 | Kolbenschmidt Ag | Leichtmetallkolben |
GB9102324D0 (en) | 1991-02-02 | 1991-03-20 | Ae Piston Products | Pistons |
DE4328619C2 (de) | 1993-08-26 | 1995-08-10 | Peak Werkstoff Gmbh | Partiell verstärktes Al-Gußbauteil und Verfahren zu dessen Herstellung |
US5425306A (en) | 1993-11-23 | 1995-06-20 | Dana Corporation | Composite insert for use in a piston |
GB2284461B (en) * | 1993-12-04 | 1996-06-26 | Ae Piston Products | Fibre-reinforced metal pistons for diesel engines |
JPH07293325A (ja) * | 1994-04-20 | 1995-11-07 | Aisin Seiki Co Ltd | 内燃機関のピストン |
DE19535590A1 (de) * | 1994-09-26 | 1996-04-04 | Unisia Jecs Corp | Kolben für Brennkraftmaschinen und Verfahren zu deren Herstellung |
DE19643778C2 (de) * | 1996-10-23 | 2000-04-13 | Alcan Gmbh | Leichtbaukolben |
US6155157A (en) * | 1998-10-06 | 2000-12-05 | Caterpillar Inc. | Method and apparatus for making a two piece unitary piston |
EP1084793A1 (de) | 1999-09-20 | 2001-03-21 | Riken Forge Co., Ltd | Verfahren zur Herstellung eines Kolbens für Brennkraftmaschine |
WO2001050042A1 (en) * | 1999-12-30 | 2001-07-12 | Federal-Mogul Corporation | Piston having uncoupled skirt |
DE10103896A1 (de) | 2001-01-30 | 2002-08-08 | Mahle Gmbh | Verfahren zur Vorbehandlung eines Ringträgers vor dem Alfinieren |
JP2003025076A (ja) | 2001-07-09 | 2003-01-28 | Riken Tanzou Kk | 内燃機関のピストン製造方法 |
JP4278138B2 (ja) * | 2003-07-18 | 2009-06-10 | アート金属工業株式会社 | 冷却空洞付き耐摩環 |
DE10352244A1 (de) * | 2003-11-08 | 2005-06-09 | Mahle Gmbh | Verfahren zur Herstellung eines Kolbens für einen Verbrennungsmotor |
DE102004038465A1 (de) | 2004-08-07 | 2006-02-23 | Ks Kolbenschmidt Gmbh | Kolben, insbesondere Kühlkanalkolben einer Brennkraftmaschine, mit zumindest drei Reibschweißzonen |
-
2005
- 2005-09-08 DE DE102005042857A patent/DE102005042857A1/de not_active Ceased
-
2006
- 2006-08-02 KR KR1020087006751A patent/KR20080068805A/ko not_active Application Discontinuation
- 2006-08-02 US US12/065,799 patent/US8683913B2/en active Active
- 2006-08-02 EP EP06776553.7A patent/EP1922479B1/de not_active Revoked
- 2006-08-02 JP JP2008529486A patent/JP2009507173A/ja active Pending
- 2006-08-02 WO PCT/EP2006/007638 patent/WO2007028466A1/de active Application Filing
- 2006-08-02 PL PL06776553T patent/PL1922479T3/pl unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE901104C (de) * | 1949-11-10 | 1954-01-07 | Fairchild Engine And Airplane | Verbundgussstueck und Verfahren zu dessen Herstellung |
JPS60166158A (ja) * | 1984-02-07 | 1985-08-29 | Izumi Jidosha Kogyo Kk | 内燃機関用ピストンの製造方法 |
EP0877160A1 (de) * | 1997-05-08 | 1998-11-11 | Zollner Corporation | Kühlkanal für Kolben |
DE10145589A1 (de) * | 2001-09-15 | 2003-04-24 | Ks Kolbenschmidt Gmbh | Kolben für eine Brennkraftmaschine |
US20030140885A1 (en) * | 2002-01-30 | 2003-07-31 | Grassi John A. | Ring band for a piston |
Also Published As
Publication number | Publication date |
---|---|
EP1922479B1 (de) | 2016-07-13 |
PL1922479T3 (pl) | 2017-05-31 |
US8683913B2 (en) | 2014-04-01 |
EP1922479A1 (de) | 2008-05-21 |
JP2009507173A (ja) | 2009-02-19 |
US20080245229A1 (en) | 2008-10-09 |
KR20080068805A (ko) | 2008-07-24 |
DE102005042857A1 (de) | 2007-03-22 |
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