EP0757754A1 - Leichtmetallkolben für verbrennungsmotoren - Google Patents
Leichtmetallkolben für verbrennungsmotorenInfo
- Publication number
- EP0757754A1 EP0757754A1 EP95913033A EP95913033A EP0757754A1 EP 0757754 A1 EP0757754 A1 EP 0757754A1 EP 95913033 A EP95913033 A EP 95913033A EP 95913033 A EP95913033 A EP 95913033A EP 0757754 A1 EP0757754 A1 EP 0757754A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- pressure
- shaft
- counter
- pressure side
- 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
- F02F3/00—Pistons
- F02F3/02—Pistons having means for accommodating or controlling heat expansion
- F02F3/022—Pistons having means for accommodating or controlling heat expansion the pistons having an oval circumference or non-cylindrical shaped skirts, e.g. oval
Definitions
- the invention relates to a light metal piston for internal combustion engines according to the preamble of claim 1.
- the present invention is therefore concerned with the problem of finding, in a structurally simple manner, a piston which has a uniform load-bearing behavior over the entire shaft height in the region of the pressure and / or counter-pressure side of the piston skirt.
- the invention is based on a preferred, in the drawing illustrated embodiment, which shows a sketch of a piston according to the invention in perspective view in section.
- a light metal piston 1 for an internal combustion engine in particular for a motor vehicle, consists in one piece of a piston head 2 and piston ring groove part 3 having a piston head and a piston skirt 4, piston pin bosses 5 attached to the piston head 2 for receiving the piston pin (not drawn) serve.
- the wall thickness in the load-bearing area is, for example, the pressure side 6 of the piston skirt 4 is designed such that it decreases continuously from the lower edge 7 of the shaft 7 or, in the presence of a collar that runs around the inside at the lower shaft end, from the upper edge thereof over the entire height of the shaft, the inner contour 8 of the shaft being conical, and on the other hand from the center plane lying in the longitudinal direction of the piston and going through the pressure 6 counter pressure side 9 decreases uniformly in the circumferential direction towards both sides.
- the length L of the wall thickness decreasing from the center plane in the circumferential direction continuously decreases from the lower shaft edge 7 over the shaft height, so that in the half-section of the piston according to the drawing on the inside of the piston shaft 4 there is a so-called "triangular collar”"designated thickening 10 results in the continuous transition into the piston skirt 4.
- a light-metal piston is created in a structurally simple manner, in which good running behavior of the piston is achieved with an excellent contact pattern on the pressure and / or counterpressure side of the piston shaft, which also reduces the friction and noise.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4414678 | 1994-04-27 | ||
DE4414678A DE4414678A1 (de) | 1994-04-27 | 1994-04-27 | Leichtmetallkolben für Verbrennungsmotoren |
PCT/DE1995/000370 WO1995029332A1 (de) | 1994-04-27 | 1995-03-16 | Leichtmetallkolben für verbrennungsmotoren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0757754A1 true EP0757754A1 (de) | 1997-02-12 |
EP0757754B1 EP0757754B1 (de) | 1998-07-01 |
Family
ID=6516563
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95913033A Expired - Lifetime EP0757754B1 (de) | 1994-04-27 | 1995-03-16 | Leichtmetallkolben für verbrennungsmotoren |
Country Status (4)
Country | Link |
---|---|
US (1) | US5701803A (de) |
EP (1) | EP0757754B1 (de) |
DE (2) | DE4414678A1 (de) |
WO (1) | WO1995029332A1 (de) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5839352A (en) * | 1996-08-07 | 1998-11-24 | Cummins Engine Company, Inc. | Articulated piston |
DE19733814C2 (de) * | 1996-08-07 | 2001-03-29 | Cummins Engine Co Inc | Motorkolben |
JPH11303674A (ja) | 1998-04-24 | 1999-11-02 | Unisia Jecs Corp | 内燃機関のピストン |
US6209510B1 (en) | 1998-07-28 | 2001-04-03 | Teledyne Technologies Incorporated | Piston and connecting rod assembly |
DE19908670C2 (de) * | 1999-02-27 | 2001-02-22 | Federal Mogul Burscheid Gmbh | Kolben für Brennkraftmaschinen |
US7302884B2 (en) | 2005-11-03 | 2007-12-04 | Dresser, Inc. | Piston |
US7293497B2 (en) | 2005-11-03 | 2007-11-13 | Dresser, Inc. | Piston |
DE102007020447A1 (de) * | 2007-04-27 | 2008-10-30 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
DE102009032379A1 (de) * | 2008-08-13 | 2010-02-18 | Mahle International Gmbh | Kolben für einen Verbrennungsmotor |
JP5543908B2 (ja) * | 2010-12-24 | 2014-07-09 | 本田金属技術株式会社 | エンジン用のピストン |
DE102015209591B4 (de) | 2015-05-26 | 2021-03-11 | Federal-Mogul Nürnberg GmbH | Kolben für einen Verbrennungsmotor |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB105312A (de) * | 1900-01-01 | |||
US1885681A (en) * | 1930-02-13 | 1932-11-01 | Newton J Buren | Piston construction |
GB509519A (en) * | 1937-05-25 | 1939-07-18 | Hermann Mahle | Improvements in pistons for internal combustion engines |
US2544775A (en) * | 1948-10-27 | 1951-03-13 | Newton J Buren | Piston construction |
US2660492A (en) * | 1951-07-02 | 1953-11-24 | Harold S Lewis | Piston stabilizer |
GB741466A (en) * | 1952-12-03 | 1955-12-07 | Hermann Mahle | Improvements in or relating to pistons for internal combustion engines |
GB867854A (en) * | 1957-12-19 | 1961-05-10 | Hermann Mahle | Light-metal piston |
GB1145873A (en) * | 1966-04-18 | 1969-03-19 | Tatra Np | Improvements in or relating to pistons for internal combustion engines |
US3463057A (en) * | 1967-03-23 | 1969-08-26 | Int Harvester Co | Arrangement of cylinder and piston in engine |
GB1232990A (de) * | 1967-09-28 | 1971-05-26 | ||
GB1197411A (en) * | 1968-01-09 | 1970-07-01 | Mondial Piston Galli Ercole C | Light Alloy Pistons with Inserts of a Different Metal |
JPS6198948A (ja) * | 1984-10-22 | 1986-05-17 | Toyota Motor Corp | 内燃機関用ピストン |
DE3625492A1 (de) * | 1986-07-28 | 1988-02-04 | Kloeckner Humboldt Deutz Ag | Mehrteiliger kolben fuer eine brennkraftmaschine |
JPH0750049Y2 (ja) * | 1986-11-25 | 1995-11-15 | イズミ工業株式会社 | 熱膨張抑制ピストン用ストラット |
DE3840841A1 (de) * | 1988-12-03 | 1990-06-07 | Kolbenschmidt Ag | Leichtmetallkolben fuer brennkraftmaschinen |
US4907545A (en) * | 1988-12-28 | 1990-03-13 | Caterpillar Inc. | Liquid cooled piston ring carrier assembly and piston using same |
SU1687830A1 (ru) * | 1989-04-04 | 1991-10-30 | Тульский Политехнический Институт | Поршень двигател внутреннего сгорани |
JP2762575B2 (ja) * | 1989-06-19 | 1998-06-04 | アイシン精機株式会社 | ピストン |
GB8927125D0 (en) * | 1989-11-30 | 1990-01-31 | Hepworth & Grandage Ltd | Pistons |
-
1994
- 1994-04-27 DE DE4414678A patent/DE4414678A1/de not_active Withdrawn
-
1995
- 1995-03-16 DE DE59502689T patent/DE59502689D1/de not_active Expired - Fee Related
- 1995-03-16 EP EP95913033A patent/EP0757754B1/de not_active Expired - Lifetime
- 1995-03-16 US US08/737,252 patent/US5701803A/en not_active Expired - Fee Related
- 1995-03-16 WO PCT/DE1995/000370 patent/WO1995029332A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO9529332A1 * |
Also Published As
Publication number | Publication date |
---|---|
US5701803A (en) | 1997-12-30 |
DE59502689D1 (de) | 1998-08-06 |
DE4414678A1 (de) | 1995-11-02 |
EP0757754B1 (de) | 1998-07-01 |
WO1995029332A1 (de) | 1995-11-02 |
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