WO2009076380A3 - Piston assembly and connecting rod having a profiled wrist pin bore therefor - Google Patents

Piston assembly and connecting rod having a profiled wrist pin bore therefor Download PDF

Info

Publication number
WO2009076380A3
WO2009076380A3 PCT/US2008/086122 US2008086122W WO2009076380A3 WO 2009076380 A3 WO2009076380 A3 WO 2009076380A3 US 2008086122 W US2008086122 W US 2008086122W WO 2009076380 A3 WO2009076380 A3 WO 2009076380A3
Authority
WO
WIPO (PCT)
Prior art keywords
wrist pin
pin bore
connecting rod
extending
piston assembly
Prior art date
Application number
PCT/US2008/086122
Other languages
French (fr)
Other versions
WO2009076380A2 (en
Inventor
Roberto Bueno Nigro
Kai Wang
Original Assignee
Federal-Mogul Corporation
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 Federal-Mogul Corporation filed Critical Federal-Mogul Corporation
Priority to CN2008801231044A priority Critical patent/CN101939526B/en
Priority to EP08858686A priority patent/EP2232037A2/en
Priority to BRPI0819897-7A priority patent/BRPI0819897A2/en
Priority to KR1020107015247A priority patent/KR101523121B1/en
Priority to JP2010538100A priority patent/JP5481684B2/en
Publication of WO2009076380A2 publication Critical patent/WO2009076380A2/en
Publication of WO2009076380A3 publication Critical patent/WO2009076380A3/en

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 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0672—Omega-piston bowl, i.e. the combustion space having a central projection pointing towards the cylinder head and the surrounding wall being inclined towards the cylinder center axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B23/00—Other engines characterised by special shape or construction of combustion chambers to improve operation
    • F02B23/02—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition
    • F02B23/06—Other engines characterised by special shape or construction of combustion chambers to improve operation with compression ignition the combustion space being arranged in working piston
    • F02B23/0678—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets
    • F02B23/0693—Unconventional, complex or non-rotationally symmetrical shapes of the combustion space, e.g. flower like, having special shapes related to the orientation of the fuel spray jets the combustion space consisting of step-wise widened multiple zones of different depth
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C23/00—Bearings for exclusively rotary movement adjustable for aligning or positioning
    • F16C23/02—Sliding-contact bearings
    • F16C23/04—Sliding-contact bearings self-adjusting
    • F16C23/041—Sliding-contact bearings self-adjusting with edge relief
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/02—Parts of sliding-contact bearings
    • F16C33/04—Brasses; Bushes; Linings
    • F16C33/06—Sliding surface mainly made of metal
    • F16C33/10—Construction relative to lubrication
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/04—Connecting-rod bearings; Attachments thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J1/00—Pistons; Trunk pistons; Plungers
    • F16J1/10—Connection to driving members
    • F16J1/14—Connection to driving members with connecting-rods, i.e. pivotal connections
    • F16J1/16—Connection to driving members with connecting-rods, i.e. pivotal connections with gudgeon-pin; Gudgeon-pins
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

A piston assembly and connecting rod therefor is provided. The connecting rod has an elongate body extending to an end for operable attachment to a piston. The end has a wrist pin bore extending between opposite sides of the body. The wrist pin bore has a wavy profile extending between the sides. The wavy profile has at least one concave surface with a valley extending along a circumferential direction of the wrist pin bore and convex surfaces having peaks extending along a circumferential direction of the wrist pin bore on laterally opposite sides of the valley. The peaks and valleys cooperate to form a smooth load gradient and uniform lubrication flow across the interface region between the wrist pin bore and the wrist pin extending therethrough.
PCT/US2008/086122 2007-12-10 2008-12-10 Piston assembly and connecting rod having a profiled wrist pin bore therefor WO2009076380A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CN2008801231044A CN101939526B (en) 2007-12-10 2008-12-10 Piston assembly and connecting rod having a profiled piston pin
EP08858686A EP2232037A2 (en) 2007-12-10 2008-12-10 Piston assembly and connecting rod having a profiled wrist pin bore therefor
BRPI0819897-7A BRPI0819897A2 (en) 2007-12-10 2008-12-10 Piston and connecting rod assembly for an internal combustion engine
KR1020107015247A KR101523121B1 (en) 2007-12-10 2008-12-10 Piston assembly and connecting rod having a profiled wrist pin bore therefor
JP2010538100A JP5481684B2 (en) 2007-12-10 2008-12-10 Connecting rod with piston assembly and contoured wrist pin hole therefor

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US1253007P 2007-12-10 2007-12-10
US61/012,530 2007-12-10
US12/330,932 US8539928B2 (en) 2007-12-10 2008-12-09 Piston assembly and connecting rod having a profiled wrist pin bore therefor
US12/330,932 2008-12-09

Publications (2)

Publication Number Publication Date
WO2009076380A2 WO2009076380A2 (en) 2009-06-18
WO2009076380A3 true WO2009076380A3 (en) 2009-09-03

Family

ID=40720336

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/086122 WO2009076380A2 (en) 2007-12-10 2008-12-10 Piston assembly and connecting rod having a profiled wrist pin bore therefor

Country Status (7)

Country Link
US (1) US8539928B2 (en)
EP (1) EP2232037A2 (en)
JP (1) JP5481684B2 (en)
KR (1) KR101523121B1 (en)
CN (1) CN101939526B (en)
BR (1) BRPI0819897A2 (en)
WO (1) WO2009076380A2 (en)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010008785A2 (en) 2008-06-24 2010-01-21 Federal-Mogul Corporation Wrist pin, connecting rod, piston and piston assembly therewith and methods of constructing and assembling the same
DE112010004196T5 (en) * 2009-10-30 2012-08-30 Caterpillar Inc. Weight balanced engine piston
USD737861S1 (en) 2009-10-30 2015-09-01 Caterpillar Inc. Engine piston
US8245687B2 (en) * 2010-01-07 2012-08-21 Mahle International Gmbh Profiled connecting rod bore with micro-dimples
GB201001562D0 (en) * 2010-01-29 2010-03-17 Ricardo Uk Ltd Direct injection diesel
CN104603419B (en) * 2012-06-27 2017-09-01 马勒国际有限公司 Piston with cooling oil duct and closing ring cavity
US9175725B2 (en) 2013-02-25 2015-11-03 Achates Power, Inc. Rocking journal bearings for two-stroke cycle engines
US9291192B2 (en) * 2013-06-17 2016-03-22 Mahle International Gmbh Connecting rod with bearing-less large end
EP3056710B1 (en) * 2013-10-09 2019-02-27 Mitsubishi Heavy Industries Engine & Turbocharger, Ltd. Piston for auxiliary chamber-type gas engine and auxiliary chamber-type gas engine
US9038593B1 (en) 2013-11-08 2015-05-26 Achates Power, Inc. Lubricating configuration for maintaining wristpin oil pressure in a two-stroke cycle, opposed-piston engine
US9470136B2 (en) 2014-03-06 2016-10-18 Achates Power, Inc. Piston cooling configurations utilizing lubricating oil from a bearing reservoir in an opposed-piston engine
WO2015177898A1 (en) * 2014-05-22 2015-11-26 日産自動車株式会社 Combustion chamber structure for diesel engine
JP2016053395A (en) * 2014-09-03 2016-04-14 トヨタ自動車株式会社 Internal combustion engine
EP2998594A1 (en) 2014-09-19 2016-03-23 ThyssenKrupp Metalúrgica Campo Limpo Ltda. Connecting rod
JP2016070297A (en) * 2014-09-26 2016-05-09 本田技研工業株式会社 Connecting rod of internal combustion engine
JP2016161004A (en) * 2015-02-27 2016-09-05 三菱重工業株式会社 Journal bearing device
US10247093B2 (en) * 2016-01-21 2019-04-02 Tenneco Inc. Variable compression ratio connecting rod
CN107152350A (en) * 2017-06-09 2017-09-12 华晨汽车集团控股有限公司 A kind of engine piston connecting rod assembly
CN108443027A (en) * 2018-03-20 2018-08-24 玉柴联合动力股份有限公司 A kind of steel pistons friction welding (FW) contact face structure
DE102021122450A1 (en) * 2021-08-31 2023-03-02 Rolls-Royce Deutschland Ltd & Co Kg planetary gear

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WO1999005423A1 (en) * 1997-07-28 1999-02-04 Volkswagen Aktiengesellschaft Connecting rod with a bearing metal
JP2005140220A (en) * 2003-11-06 2005-06-02 Nissan Motor Co Ltd Low friction sliding member, crank pin provided in engine using the same, bearing metal for receiving the crank pin, and engine
JP2005256917A (en) * 2004-03-11 2005-09-22 Daido Metal Co Ltd Sliding bearing
WO2006054142A1 (en) * 2004-11-16 2006-05-26 Mahle Technology, Inc. Connecting rod assembly for an internal combustion engine and method of manufacturing same

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Publication number Priority date Publication date Assignee Title
WO1999005423A1 (en) * 1997-07-28 1999-02-04 Volkswagen Aktiengesellschaft Connecting rod with a bearing metal
JP2005140220A (en) * 2003-11-06 2005-06-02 Nissan Motor Co Ltd Low friction sliding member, crank pin provided in engine using the same, bearing metal for receiving the crank pin, and engine
JP2005256917A (en) * 2004-03-11 2005-09-22 Daido Metal Co Ltd Sliding bearing
WO2006054142A1 (en) * 2004-11-16 2006-05-26 Mahle Technology, Inc. Connecting rod assembly for an internal combustion engine and method of manufacturing same

Also Published As

Publication number Publication date
JP2011506876A (en) 2011-03-03
JP5481684B2 (en) 2014-04-23
EP2232037A2 (en) 2010-09-29
KR101523121B1 (en) 2015-05-26
US20090145394A1 (en) 2009-06-11
BRPI0819897A2 (en) 2015-05-19
WO2009076380A2 (en) 2009-06-18
US8539928B2 (en) 2013-09-24
CN101939526B (en) 2012-12-26
CN101939526A (en) 2011-01-05
KR20100098685A (en) 2010-09-08

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