EP2726724A1 - Piston with an undercrown support feature - Google Patents
Piston with an undercrown support featureInfo
- Publication number
- EP2726724A1 EP2726724A1 EP12738286.9A EP12738286A EP2726724A1 EP 2726724 A1 EP2726724 A1 EP 2726724A1 EP 12738286 A EP12738286 A EP 12738286A EP 2726724 A1 EP2726724 A1 EP 2726724A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- combustion
- ribs
- set forth
- crown portion
- 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
- 238000002485 combustion reaction Methods 0.000 claims abstract description 65
- 230000001965 increasing effect Effects 0.000 description 13
- 238000005452 bending Methods 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 4
- 230000002708 enhancing effect Effects 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 210000000707 wrist Anatomy 0.000 description 1
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
-
- 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
- F02F3/00—Pistons
- F02F3/0076—Pistons the inside of the pistons being provided with ribs or fins
Definitions
- the piston 20 includes a pair of ribs 38, 40 spaced diametrically from one another and extending generally between the pin bosses 26 to reinforce the upper crown portion 24, thereby enhancing the upper crown portion's 24 resistance to bending about the pin bore axis A2 when the combustion wall 30 is exposed to the increased pressures and temperatures of an engine with direct injection, a turbo-charger and/or a super-charger. This enhanced resistance to bending is achieved without a substantial increase in the mass of the piston 20.
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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161502602P | 2011-06-29 | 2011-06-29 | |
PCT/US2012/044564 WO2013003546A1 (en) | 2011-06-29 | 2012-06-28 | Piston with an undercrown support feature |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2726724A1 true EP2726724A1 (en) | 2014-05-07 |
EP2726724B1 EP2726724B1 (en) | 2018-08-22 |
Family
ID=46551872
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12738286.9A Not-in-force EP2726724B1 (en) | 2011-06-29 | 2012-06-28 | Piston with an undercrown support feature |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP2726724B1 (en) |
JP (2) | JP6226866B2 (en) |
KR (1) | KR20140032455A (en) |
CN (2) | CN107842437B (en) |
WO (1) | WO2013003546A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102017207005A1 (en) * | 2017-04-26 | 2018-10-31 | Federal-Mogul Nürnberg GmbH | One-piece, cast piston for an internal combustion engine |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB140651A (en) * | 1919-05-22 | 1920-04-01 | Albert Joseph Rath | Improved construction of piston |
GB399853A (en) * | 1932-03-16 | 1933-10-16 | Roland Claude Cross | Improvements relating to pistons, especially applicable for internal combustion engines |
JPS613946U (en) * | 1984-06-14 | 1986-01-11 | 日産ディーゼル工業株式会社 | internal combustion engine piston |
GB8824222D0 (en) * | 1988-10-15 | 1988-11-23 | Wellworthy Ltd | Pistons |
JPH08312454A (en) * | 1995-05-17 | 1996-11-26 | Toyota Motor Corp | Piston for internal combustion engine |
JPH09329056A (en) * | 1996-06-11 | 1997-12-22 | Toyota Motor Corp | Internal combustion engine piston |
JPH1018908A (en) * | 1996-07-01 | 1998-01-20 | Hidaka Eng:Kk | Piston for internal combustion engine |
JP2001289117A (en) * | 2000-04-07 | 2001-10-19 | Unisia Jecs Corp | Piston for internal combustion engine |
DE10244510A1 (en) * | 2002-09-25 | 2004-04-08 | Mahle Gmbh | One-piece cooling channel piston for an internal combustion engine |
DE10244511A1 (en) * | 2002-09-25 | 2004-04-15 | Mahle Gmbh | Multi-part cooled piston for an internal combustion engine |
US7406941B2 (en) * | 2004-07-21 | 2008-08-05 | Federal - Mogul World Wide, Inc. | One piece cast steel monobloc piston |
BRPI0718657A2 (en) * | 2006-11-08 | 2013-11-19 | Federal Mogul Corp | PISTON SET |
US7353797B1 (en) * | 2007-02-28 | 2008-04-08 | University Of Washington | Combustion chamber for internal combustion engine |
US7647911B2 (en) * | 2007-08-08 | 2010-01-19 | Federal-Mogul World Wide, Inc. | Small end con rod guidance piston |
US8042453B2 (en) * | 2007-08-13 | 2011-10-25 | Federal-Mogul Corporation | Piston with a skirt having oil flow slots |
JP2010236406A (en) * | 2009-03-31 | 2010-10-21 | Honda Motor Co Ltd | Piston |
JP2011185214A (en) * | 2010-03-10 | 2011-09-22 | Honda Motor Co Ltd | Internal combustion engine |
-
2012
- 2012-06-28 JP JP2014519000A patent/JP6226866B2/en not_active Expired - Fee Related
- 2012-06-28 EP EP12738286.9A patent/EP2726724B1/en not_active Not-in-force
- 2012-06-28 KR KR1020137034245A patent/KR20140032455A/en not_active Application Discontinuation
- 2012-06-28 WO PCT/US2012/044564 patent/WO2013003546A1/en active Application Filing
- 2012-06-28 CN CN201711058426.2A patent/CN107842437B/en not_active Expired - Fee Related
- 2012-06-28 CN CN201280037963.8A patent/CN103748345A/en active Pending
-
2017
- 2017-02-16 JP JP2017026983A patent/JP6396521B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO2013003546A1 * |
Also Published As
Publication number | Publication date |
---|---|
EP2726724B1 (en) | 2018-08-22 |
CN103748345A (en) | 2014-04-23 |
CN107842437A (en) | 2018-03-27 |
CN107842437B (en) | 2020-03-06 |
WO2013003546A1 (en) | 2013-01-03 |
JP2017115894A (en) | 2017-06-29 |
JP6396521B2 (en) | 2018-09-26 |
JP2014521000A (en) | 2014-08-25 |
KR20140032455A (en) | 2014-03-14 |
JP6226866B2 (en) | 2017-11-08 |
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