EP1529935A1 - Düse für Kolbenkühlung mit verminderter Zwischenachse - Google Patents

Düse für Kolbenkühlung mit verminderter Zwischenachse Download PDF

Info

Publication number
EP1529935A1
EP1529935A1 EP04356176A EP04356176A EP1529935A1 EP 1529935 A1 EP1529935 A1 EP 1529935A1 EP 04356176 A EP04356176 A EP 04356176A EP 04356176 A EP04356176 A EP 04356176A EP 1529935 A1 EP1529935 A1 EP 1529935A1
Authority
EP
European Patent Office
Prior art keywords
axis
transverse
nozzle
peripheral wall
nozzle body
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
Application number
EP04356176A
Other languages
English (en)
French (fr)
Other versions
EP1529935B1 (de
Inventor
Yves Bontaz
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bontaz Centre SA
Original Assignee
Bontaz Centre SA
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 Bontaz Centre SA filed Critical Bontaz Centre SA
Publication of EP1529935A1 publication Critical patent/EP1529935A1/de
Application granted granted Critical
Publication of EP1529935B1 publication Critical patent/EP1529935B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets

Definitions

  • the present invention relates to piston cooling nozzles for an internal combustion engine, used to project a fluid of cooling such as oil against the piston bottom, that is to say against the face outside piston to the explosion chamber.
  • the piston cooling nozzles usually used are inserts attached to the crankcase and communicating with an orifice supply of cooling fluid.
  • the position of the jet must be determined accurately, to accurately determine the impact of the fluid jet of cooling on the piston bottom.
  • Jet body has a portion cylindrical shaped for its introduction into a fluid supply port of the engine cylinder housing.
  • a first solution consists in providing a nozzle having a coaxial screw-plug which screws into a threaded end portion of the fluid supply line.
  • a cross-sectional plate blocks the rotating nozzle.
  • a second solution usually used for fixing the jet on the engine cylinder casing consists in providing a transverse fixing plate, comprising a first hole in which is fixed the jet body, and comprising a second hole laterally offset from the transverse bore, for the passage of a nozzle fixing screw on the engine cylinder housing.
  • This second solution is simpler to implement, but it has the disadvantage of a sometimes excessive congestion.
  • the peripheral wall of the jet body must be sufficiently thick so that the axial bore effectively retains the fluid outlet conduit of cooling.
  • the fastening screw must be of sufficient diameter to ensure sufficient clamping of the mounting plate on the engine cylinder housing, avoiding any risk of detachment or vibration.
  • the problem proposed by the present invention is thus to conceive a new piston cooling jet structure, the fixation of which is carried out by a transversal plate of fixation, whose size of the plate transverse fixing is reduced, and whose inter-axis between the axis of the screw of fixing and the axis of the nozzle body is also reduced.
  • the goal is to allow to adapt such sprinklers in engines having a reduced space for fixing the cooling nozzle.
  • the aim of the invention is, at the same time, to ensure operation and correct reliability of the piston cooling nozzle, and in particular correct coolant outlet duct and all of the nozzle himself.
  • the external recess in the diametrically opposite peripheral wall allows to bring the axis of the jet body and the axis of the fixing screw, while allowing the maneuvering of the fixing screw by a clamping tool such as a robot arm end.
  • Another advantage is that the outer recess provides relief from the piston cooling nozzle, which is favorable in the research current engine performance.
  • the inter-axis of the first and second holes of the plate transversal fixation is just sufficient to allow engagement and rotation of a screwdriver on the screw head fixing without contact with the peripheral wall of the nozzle body.
  • the external recess is a flat part parallel to the axis of the nozzle body.
  • the external recess is a surface Concave cylindrical axis parallel to the axis of the nozzle body and coaxial to the axis of the fixing screw.
  • This last embodiment is particularly adapted to a screwing system in which the screwing tool is the end of an arm of robot with cylindrical outer contour of revolution and internal contour adapted for taking the screw head.
  • the nozzle comprises a nozzle body 1 wall generally cylindrical peripheral of axis I-I and surrounding an axial bore 2 containing valve means 3.
  • the valve means 3 comprises a fixing screw 3a whose axial rod 3b guides a spring of 3c compression that pushes a 3d closure ball against a 3rd body seat nozzle 1.
  • the ball 3d can close the axial bore 2 as the pressure of cooling fluid at the inlet 2a of the axial bore 2 does not exceed a threshold determined corresponding to the thrust force of the spring 3b.
  • the peripheral wall 1a of the nozzle body 1 is traversed by a transverse drilling 4 communicating with the axial bore 2 and connected to a coolant outlet duct 5.
  • the nozzle body 1 comprises a cylindrical input portion 1b, coaxial axis I-I, shaped for its introduction into a supply port of fluid from the engine cylinder housing.
  • a transverse fixing plate 6 is associated with the nozzle body 1 to secure it to the engine cylinder cover.
  • the plate transverse fixation 6 has a first hole 6a in which is fixed the body nozzle 1, by welding or fitting, and comprises a second hole 6b offset laterally opposite the transverse bore 4, for the passage of a screw attachment 7 of the nozzle on the engine cylinder housing.
  • the inter-axis E1 between the axis I-I of the nozzle body 1 and the axis II-II of the fixing screw 7 must be sufficient to leave a radial clearance between the nozzle body 1 and a tool of screwing that is engaged on the head of the fixing screw 7. This is the reason for which the inter-axis E1 must be wide, which forces to dimension in consequently the fixing plate 6.
  • the peripheral wall 1 has a thickness T which is greater than or equal to the diameter D of the transverse bore 4.
  • the cooling fluid outlet duct 5 can be a tube reported, force-fitted by its end in the transverse bore 4, this which is sufficient to ensure effective maintenance of the fluid outlet duct 5.
  • the peripheral wall is thinner due to the presence of an external recess 1d with regard to the second hole 6b of the transverse fixing plate 6.
  • the inter-axis E2 of the first hole 6a and second hole 6b of the transverse attachment plate 6, or between-axis between the body nozzle 1 and the fixing screw 7, is just sufficient to allow the engagement and the rotation of a screwing tool 8 on the head of the fixing screw 7 without contact with the peripheral wall 1a of the nozzle body 1. It is left, between the tool of screwing 8 and the nozzle body 1, a functional game that facilitates the movement of the screwing tool 8 during its adaptation and its withdrawal relative to the screw of fixing 7.
  • the external recess 1d is a concave cylindrical surface with an axis parallel to the axis I-I of the nozzle body 1 and coaxial with the axis II-II of the fixing screw 7.
  • the screwing tool 8 as illustrated is the end of a robot arm to cylindrical outer contour of revolution and inner contour adapted for taking of the screw head 7.
  • the external recess 1d is a flat parallel to the axis I-I of the nozzle body 1.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Nozzles (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Fuel-Injection Apparatus (AREA)
EP04356176A 2003-11-04 2004-11-03 Düse für Kolbenkühlung mit verminderter Zwischenachse Expired - Lifetime EP1529935B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0313248 2003-11-04
FR0313248A FR2861804B1 (fr) 2003-11-04 2003-11-04 Gicleur de refroidissement de piston a entre-axe reduit

Publications (2)

Publication Number Publication Date
EP1529935A1 true EP1529935A1 (de) 2005-05-11
EP1529935B1 EP1529935B1 (de) 2011-06-01

Family

ID=34429976

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04356176A Expired - Lifetime EP1529935B1 (de) 2003-11-04 2004-11-03 Düse für Kolbenkühlung mit verminderter Zwischenachse

Country Status (7)

Country Link
US (1) US7104225B2 (de)
EP (1) EP1529935B1 (de)
CN (1) CN1287072C (de)
AT (1) ATE511599T1 (de)
AU (1) AU2004226948B2 (de)
BR (1) BRPI0404650A (de)
FR (1) FR2861804B1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9476344B2 (en) 2013-04-11 2016-10-25 Bontaz Centre R&D Compact cooling device for an internal combustion engine and method for manufacturing such a device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8397749B2 (en) * 2007-09-07 2013-03-19 Metaldyne Company Llc Piston cooling jet with tracking ball orifice
FR2935771B1 (fr) 2008-09-09 2010-10-08 Bontaz Centre Sa Dispositif de commande de l'alimentation d'un systeme avec un fluide
CN101886570B (zh) * 2010-06-02 2012-02-29 奇瑞汽车股份有限公司 一种活塞冷却喷嘴结构
CN104533588A (zh) * 2014-12-26 2015-04-22 山东华源莱动内燃机有限公司 活塞冷却喷嘴
GB201519640D0 (en) * 2015-11-06 2015-12-23 Gm Global Tech Operations Inc Piston cooling jet for an internal combustion engine
FR3109608B1 (fr) * 2020-04-22 2023-01-13 Bontaz Centre R & D Gicleur de refroidissement de piston double jet en materiau plastique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938431A1 (de) * 1979-09-22 1981-03-26 Daimler-Benz Aktiengesellschaft, 70567 Stuttgart Einrichtung zur kolbenkuehlung fuer brennkraftmaschinen
US4995346A (en) * 1989-06-28 1991-02-26 Sharon Manufacturing Company Oil jet piston cooler
EP0682175A1 (de) * 1994-05-10 1995-11-15 Bontaz Centre Spritzdüse für Kolbenkühlung für eine Brennkraftmaschine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2938431A1 (de) * 1979-09-22 1981-03-26 Daimler-Benz Aktiengesellschaft, 70567 Stuttgart Einrichtung zur kolbenkuehlung fuer brennkraftmaschinen
US4995346A (en) * 1989-06-28 1991-02-26 Sharon Manufacturing Company Oil jet piston cooler
EP0682175A1 (de) * 1994-05-10 1995-11-15 Bontaz Centre Spritzdüse für Kolbenkühlung für eine Brennkraftmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9476344B2 (en) 2013-04-11 2016-10-25 Bontaz Centre R&D Compact cooling device for an internal combustion engine and method for manufacturing such a device

Also Published As

Publication number Publication date
AU2004226948B2 (en) 2007-05-10
ATE511599T1 (de) 2011-06-15
FR2861804A1 (fr) 2005-05-06
US7104225B2 (en) 2006-09-12
EP1529935B1 (de) 2011-06-01
FR2861804B1 (fr) 2006-01-20
BRPI0404650A (pt) 2005-06-21
AU2004226948A1 (en) 2005-05-19
US20050098122A1 (en) 2005-05-12
CN1614206A (zh) 2005-05-11
CN1287072C (zh) 2006-11-29

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