WO2013190463A1 - Agencement de lubrification de palier de vilebrequin - Google Patents

Agencement de lubrification de palier de vilebrequin Download PDF

Info

Publication number
WO2013190463A1
WO2013190463A1 PCT/IB2013/054993 IB2013054993W WO2013190463A1 WO 2013190463 A1 WO2013190463 A1 WO 2013190463A1 IB 2013054993 W IB2013054993 W IB 2013054993W WO 2013190463 A1 WO2013190463 A1 WO 2013190463A1
Authority
WO
WIPO (PCT)
Prior art keywords
crankshaft
crankshaft bearing
flow passage
housing
bearing
Prior art date
Application number
PCT/IB2013/054993
Other languages
English (en)
Inventor
Richard Dehane SCHULZ
Raymond BAKKER
Original Assignee
Adept Airmotive (Proprietary) Limited
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 Adept Airmotive (Proprietary) Limited filed Critical Adept Airmotive (Proprietary) Limited
Publication of WO2013190463A1 publication Critical patent/WO2013190463A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • 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
    • F16C3/00—Shafts; Axles; Cranks; Eccentrics
    • F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
    • F16C3/06—Crankshafts
    • F16C3/14—Features relating 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
    • 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
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/1045—Details of supply of the liquid to the bearing
    • F16C33/1055—Details of supply of the liquid to the bearing from radial inside, e.g. via a passage through the shaft and/or inner sleeve
    • 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
    • F16C33/1025—Construction relative to lubrication with liquid, e.g. oil, as lubricant
    • F16C33/106—Details of distribution or circulation inside the bearings, e.g. details of the bearing surfaces to affect flow or pressure of the liquid
    • F16C33/1065—Grooves on a bearing surface for distributing or collecting the liquid
    • 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
    • F16C33/72—Sealings
    • F16C33/74—Sealings of sliding-contact bearings
    • 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
    • F16C9/02—Crankshaft bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • F01M2001/062—Crankshaft with passageways
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F01M2011/026—Arrangements of lubricant conduits for lubricating crankshaft bearings

Definitions

  • THIS invention relates to a crankshaft bearing lubrication arrangement, and more particularly but not exclusively, to a crankshaft bearing lubrication arrangement suitable for use in an internal combustion engine.
  • the lubrication system of an engine is designed to deliver clean oil at a correct predetermined temperature and pressure to every part of the engine, including the main bearings and the crank pin bearings of the crankshaft.
  • oil passages are drilled or cast into the crankshaft so as to define conduits from the front end of the shaft to the particular bearings to be lubricated.
  • the main bearings are the bearings on which the crankshaft rotates, and are usually plain or journal bearings.
  • Engines have a minimum of two main bearings being a front main bearing and a rear main bearing.
  • oil is, in the case of some engines, introduced into the oil passage in the crankshaft through an inlet at the front end of the crankshaft.
  • the inlet in the crankshaft is in turn in flow communication with a pressurized lubricant cavity in the crankcase.
  • An oil seal is typically provided between the pressurized lubricant cavity and the front main bearing, but some seepage of oil past the oil seal and beyond the main bearing still occurs due to the pressure differential across the oil seal.
  • crankshaft bearing lubrication arrangement that will, at least partially, alleviate the above shortcoming.
  • crankshaft bearing lubrication arrangement which will be a useful alternative to existing crankshaft bearing lubrication arrangements.
  • crankshaft bearing lubrication arrangement including:
  • crankshaft having an inner flow passage provided therethrough, and a radially outwardly extending flow passage extending between the inner flow passage and an outer surface of the crankshaft; a housing for receiving an end zone of the crankshaft, the housing including a lubricant cavity which is in flow communication with the inner flow passage in the crankshaft;
  • crankshaft bearing housed in the housing for receiving an end zone of the crankshaft therein;
  • the crankshaft bearing including a sleeve formation having an inner surface that in use faces an outer surface of the crankshaft;
  • a helical groove is provided in the inner surface of the sleeve formation or in the outer surface of the crankshaft.
  • the helical groove is formed in an inner surface of the sleeve formation.
  • the helical groove is also provided for the helical groove to be formed in an outer surface of the crankshaft.
  • a sealing member to be provided between the crankshaft bearing and the lubricant cavity in the housing.
  • the helical groove is orientated in a direction opposite the direction of rotation of the crankshaft in order for the helical groove in use to act as an Archimedean screw that urges fluid located between the bearing and the crankshaft towards the sealing member.
  • the inner flow passage is a flow passage that extends substantially longitudinally inside the crankshaft.
  • the housing is a crankcase.
  • helices can be either right-handed or left-handed. With the line of sight along the helix's axis, if a clockwise screwing motion moves the helix away from the observer, it is called a right-handed helix; and if a clockwise screwing motion moves the helix towards the observer it is called a left-handed helix.
  • crankshaft bearing including a sleeve formation, with a helical grooved formed in an inner surface of the sleeve formation.
  • Figure 1 is an exploded cross-sectional side view of a crankshaft bearing lubrication arrangement in accordance with one embodiment of the invention
  • Figure 2 is an assembled cross-sectional side view of the crankshaft bearing lubrication arrangement of Figure 1;
  • FIG. 3 is an enlarged view of the crankshaft bearing that forms part of the crankshaft bearing lubrication arrangement.
  • crankshaft bearing lubrication arrangement in accordance with the invention is generally indicated by reference numeral 10.
  • the crankshaft bearing lubrication arrangement comprises a crankshaft 20 (only an end zone of which is shown in the figures), a crankcase 30, a crankshaft bearing 40 and an oil seal 50.
  • crankshaft 20 may be of many different configurations, and the detail design of the crankshaft 20 is of no relevance insofar as this invention is concerned.
  • the only requirement is that the crankshaft 20 must have an inner or internal lubrication passage 22 which extends generally longitudinally along the crankshaft.
  • a radially outwardly directed flow passage 23 (referred to as a main bearing oil supply drilling) links the internal lubrication passage 22 with the surface 24 of the crankshaft 20, and more particularly with a journal surface of the crankshaft. Lubricating oil inside the flow passage 22 can therefore be transported to the surface 24 of the crankshaft for the purposes of lubrication, as is discussed in more detail below.
  • the front end 21 of the crankshaft 20 protrudes into the crankcase 30.
  • an end of the internal lubrication passage 22 is located adjacent a lubricant cavity 31 provided in the crankcase 30.
  • the lubricant cavity 31 is in flow communication with the internal flow passage 22 in the crankshaft.
  • a crankshaft bearing 40 is housed in the crankcase 30, and snugly receives the end of the crankshaft therein.
  • the bearing comprises a sleeve 41 having an inner surface, with helical grooves 42 provided in the inner surface of the sleeve.
  • the helical grooves are orientated so that the configuration of the helix so formed is opposite to the direction of the rotation of the crankshaft, thus causing the grooves to act as an Archimedean screw that urges lubricant between the sleeve 41 and the surface 24 of the crankshaft 20 in the direction of Arrow B in Figure 3.
  • An oil seal 50 is located between the bearing 40 and the lubricant cavity 31 , and prevents free movement of lubricant of lubricant through the bearing, although a small amount of seepage still occurs due to the pressure differential present (P2»P1).
  • P2 pressure differential present
  • the flow towards the oil seal at least partially balances the pressure on both sides of the oil seal, thus minimizing oil pressure loss in the crankcase cavity behind the oil seal and main bearing.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Ocean & Marine Engineering (AREA)
  • Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)

Abstract

Cette invention porte sur un agencement de lubrification de palier de vilebrequin et, plus particulièrement, mais non exclusivement, sur un agencement de lubrification de palier de vilebrequin approprié pour être utilisé dans un moteur à combustion interne. L'agencement de lubrification de palier de vilebrequin comprend un vilebrequin ayant un passage d'écoulement intérieur qui le traverse et un passage d'écoulement s'étendant radialement vers l'extérieur s'étendant entre le passage d'écoulement intérieur et une surface extérieure du vilebrequin, un carter destiné à recevoir une zone d'extrémité du vilebrequin, le carter comprenant une cavité de lubrifiant qui est en communication fluidique avec le passage d'écoulement intérieur dans le vilebrequin; et un palier de vilebrequin logé dans le carter pour recevoir intérieurement une zone d'extrémité du vilebrequin; le palier de vilebrequin comprenant une formation de douille ayant une surface intérieure qui, en utilisation, fait face à une surface extérieure du vilebrequin. L'agencement de lubrification de palier de vilebrequin est caractérisé en ce qu'une rainure hélicoïdale est ménagée dans la surface intérieure de la formation de douille ou dans la surface extérieure du vilebrequin.
PCT/IB2013/054993 2012-06-18 2013-06-18 Agencement de lubrification de palier de vilebrequin WO2013190463A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ZA2012/04473 2012-06-18
ZA201204473 2012-06-18

Publications (1)

Publication Number Publication Date
WO2013190463A1 true WO2013190463A1 (fr) 2013-12-27

Family

ID=49034123

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2013/054993 WO2013190463A1 (fr) 2012-06-18 2013-06-18 Agencement de lubrification de palier de vilebrequin

Country Status (2)

Country Link
WO (1) WO2013190463A1 (fr)
ZA (1) ZA201304691B (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20153896A1 (it) * 2015-09-25 2017-03-25 Nuovo Pignone Tecnologie Srl Metodo per uniformare la temperatura in un albero supportato da un cuscinetto a fluido, sistema a cuscinetto e turbomacchina
IT201600130216A1 (it) * 2016-12-22 2018-06-22 Nuovo Pignone Tecnologie Srl Sistema a cuscinetto con una bussola rotante e turbomacchina / bearing system with a rotary bush and turbomachine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1418920A (en) * 1921-11-21 1922-06-06 John G Hamlin Combined bearing shim and wear-compensating washer
GB2350652A (en) * 1999-06-01 2000-12-06 Daido Metal Co Main bearing for an engine to prevent dry starts
JP2005090650A (ja) * 2003-09-18 2005-04-07 Isuzu Motors Ltd 軸受構造
US20060272609A1 (en) * 2005-05-20 2006-12-07 Honda Motor Co., Ltd. Internal combustion engine with torque converter

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1418920A (en) * 1921-11-21 1922-06-06 John G Hamlin Combined bearing shim and wear-compensating washer
GB2350652A (en) * 1999-06-01 2000-12-06 Daido Metal Co Main bearing for an engine to prevent dry starts
JP2005090650A (ja) * 2003-09-18 2005-04-07 Isuzu Motors Ltd 軸受構造
US20060272609A1 (en) * 2005-05-20 2006-12-07 Honda Motor Co., Ltd. Internal combustion engine with torque converter

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20153896A1 (it) * 2015-09-25 2017-03-25 Nuovo Pignone Tecnologie Srl Metodo per uniformare la temperatura in un albero supportato da un cuscinetto a fluido, sistema a cuscinetto e turbomacchina
WO2017050965A1 (fr) * 2015-09-25 2017-03-30 Nuovo Pignone Tecnologie Srl Procédé pour uniformiser une température dans un arbre soutenu par un palier à fluide, système de palier et machine à turbine
CN108350948A (zh) * 2015-09-25 2018-07-31 诺沃皮尼奥内技术股份有限公司 用于使由流体轴承支承的轴中的温度均匀化的方法、轴承系统和涡轮机
US10830281B2 (en) 2015-09-25 2020-11-10 Nuovo Pignone Srl Method for uniforming temperature in a shaft supported by a fluid bearing, bearing system and turbomachine
IT201600130216A1 (it) * 2016-12-22 2018-06-22 Nuovo Pignone Tecnologie Srl Sistema a cuscinetto con una bussola rotante e turbomacchina / bearing system with a rotary bush and turbomachine
EP3339668A1 (fr) * 2016-12-22 2018-06-27 Nuovo Pignone Tecnologie SrL Système de palier à douille rotative et turbomachine
US10655682B2 (en) 2016-12-22 2020-05-19 Nuovo Pignone Tecnologie Srl Bearing system with a rotary bush and turbomachine

Also Published As

Publication number Publication date
ZA201304691B (en) 2017-09-27

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