EP1698764A2 - Conduite d'alimentation en huile pour moteur à combustion - Google Patents

Conduite d'alimentation en huile pour moteur à combustion Download PDF

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Publication number
EP1698764A2
EP1698764A2 EP05112227A EP05112227A EP1698764A2 EP 1698764 A2 EP1698764 A2 EP 1698764A2 EP 05112227 A EP05112227 A EP 05112227A EP 05112227 A EP05112227 A EP 05112227A EP 1698764 A2 EP1698764 A2 EP 1698764A2
Authority
EP
European Patent Office
Prior art keywords
suction duct
sump
connecting means
suction
pipe
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
EP05112227A
Other languages
German (de)
English (en)
Other versions
EP1698764B1 (fr
EP1698764A3 (fr
Inventor
Giorgio Marcenaro
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.)
FPT Industrial SpA
Original Assignee
Iveco SpA
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 Iveco SpA filed Critical Iveco SpA
Publication of EP1698764A2 publication Critical patent/EP1698764A2/fr
Publication of EP1698764A3 publication Critical patent/EP1698764A3/fr
Application granted granted Critical
Publication of EP1698764B1 publication Critical patent/EP1698764B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/0004—Oilsumps
    • 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
    • F01M11/0004—Oilsumps
    • F01M2011/007—Oil pickup tube to oil pump, e.g. strainer

Definitions

  • This invention relates to an oil suction duct for internal combustion engines and, more precisely, relates to an oil suction duct of the type designed to be installed at the bottom of the oil sump of an internal combustion engine.
  • a lubricating oil pan or "sump" which is usually arranged at the bottom of the engine block, to collect and contain all of the lubricating oil, it is already known in the art.
  • Such engines also comprise a pump driven by the engine itself that sucks the lubricating oil from the sump and delivers the same into a multiplicity of lubrication ducts where the oil is subsequently collected again into said sump.
  • the lubricating oil is sucked from the sump by means of a duct, i.e. the so called suction duct, that sucks in the oil from the lowest part of the sump and delivers said oil towards the pump.
  • Said suction duct usually has a suction inlet that is arranged in proximity to the bottom of the sump to where the oil flow is directed.
  • the suction duct is a rigid structure made of low-carbon metal, and is assembled and fixed to the bottom of the engine block by means of flanges before the oil sump is assembled. Although this is a low-cost solution, it still has some drawbacks.
  • a first drawback consists in that the suction pipe is made of metal and is therefore a rigid structure, which means it cannot be adapted to fit different types and shapes of oil sumps that may be used as the engine is updated and/or modified. This means that during the production of one or more engine lines, the type and/or shape of the suction duct must be changed each time the shape of the oil sump is changed, while maintaining the same shape or casting of the base of the engine block, dealing to an increase of production costs.
  • suction duct is subject to strong vibrations, and being made of metal the same is also subject to mechanical fatigue, therefore the duct can easily break.
  • the object of the present invention is to solve the above described drawbacks by providing a suction duct for internal combustion engines that can readily be adapted for installation on different oil sump versions.
  • Another object of the present invention is to provide a suction duct for internal combustion engines that is not subject to fatigue stress caused by the vibrations of the engine, thus being more reliable.
  • a further object of the present invention is to provide a suction duct for internal combustion engines that is easier to assemble compared to the suction duct known in the prior art.
  • the present invention thus provides to a suction duct for internal combustion engines according to claim 1.
  • an engine 1 comprises an engine block 2 to the bottom of which a lubricating oil sump 3 is integrally connected. Inside the sump 3 there is a suction duct 4 that is connected to the bottom of the engine block 2 of the engine 1 by means of flanges and bolts (illustrated in greater detail below).
  • FIG 2 shows the sump 3 and suction duct 4 of the engine of Figure 1 in greater detail.
  • the suction duct 4 comprises a first rigid duct 5 that is connected to the pump at the bottom of the engine block 2 by means of a flange and the relevant bolts (not illustrated).
  • the first duct 5 is connected to a second rigid duct 6 by means of flanges 7.
  • the second duct 6 has a supporting bracket 8 that is also fixed to the bottom of the engine block 2.
  • the purpose of the bracket 8 is to increase the fatigue strength of the duct 6.
  • the suction inlet typically incorporates a straining and filtering element to remove any solid bodies and impurities (not illustrated in the drawing).
  • the suction duct consists of a single tubular member or a pipe 4 that is flexible, and it is made of a suitable material which can be already known in the art.
  • the pipe 4 has a fitting 21 for the removable coupling and complementary to the suction inlet of the oil pump, the fitting 21 being a bayonet, or screw joint type or equivalent.
  • the suction inlet 9 comprises a substantially cylindrical body with a suction area having a multiplicity of openings 10 in proximity to the bottom region of the sump 3.
  • a fitting element 22 for the removable coupling of the pipe 4 On top of said cylindrical body of the inlet 9 there is a fitting element 22 for the removable coupling of the pipe 4, the coupling 22 being complementary and of the bayonet or screw type or similar.
  • multiplicity of openings 10 constitute themselves an area in which any solid bodies and impurities that may have been deposited on the bottom of the sump 3 are strained or filtered to the pump.
  • the pipe 4 is connected to the inlet 9 by means of the coupling 22.
  • the pipe 4 is connected to the suction inlet of the pump on the engine block 2 by means of the coupling 21, and at last the sump 3 is connected to the engine block 2.
  • a first advantage consists of the fact that the suction pipe comprises a single pipe 4 and there is thus no risk of leaks or intermediate breakages that could result in loss of efficiency.
  • a second advantage consists of the fact that the suction pipe 4 is made of a flexible material and is thus not subject to fatigue stress that could undermine its integrity and shorten its working life.
  • connection of the pipe 4 to the engine block 2 requires the use of fewer threaded connections, making connection simpler and reducing machining and assembly times.
  • a further advantage consists of the fact that the assembly of the suction pipe 4 and subsequent assembly of the oil sump 3 on the engine block 2 are simplified, reducing the costs and time involved.
  • Another advantage consists of the fact that, since the suction pipe 4 is more reliable, relevant repairs and engine maintenance operations can be carried out at longer intervals once the suction pipe is in use.
  • Another main advantage concerns the logistics associated with the proposed solution, whereby there are fewer parts for subsequent assembly, as the sump according to this invention is supplied with the suction pipe already assembled, and less space is required at the assembly plant, since the area at the side of the line usually taken up by the suction ducts container(s) is no longer necessary.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP05112227A 2005-03-02 2005-12-15 Conduite d'alimentation en huile pour moteur à combustion Active EP1698764B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20050316 ITMI20050316A1 (it) 2005-03-02 2005-03-02 Succhieruola dell'olio per motori endotermici

Publications (3)

Publication Number Publication Date
EP1698764A2 true EP1698764A2 (fr) 2006-09-06
EP1698764A3 EP1698764A3 (fr) 2009-04-15
EP1698764B1 EP1698764B1 (fr) 2013-03-06

Family

ID=34956721

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05112227A Active EP1698764B1 (fr) 2005-03-02 2005-12-15 Conduite d'alimentation en huile pour moteur à combustion

Country Status (3)

Country Link
EP (1) EP1698764B1 (fr)
ES (1) ES2410586T3 (fr)
IT (1) ITMI20050316A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20151211A1 (it) * 2015-08-25 2015-11-25 Mdb Srl Sistema di pescaggio dell'olio autodirezionale contenuto nella coppa dell'olio e collegato al circuito di lubrificazione dei motori a combustione interna

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022443A1 (de) * 1980-06-14 1981-12-24 Bayerische Motoren Werke AG, 8000 München Brennkraftmaschine mit einem saugrohr fuer den schmieroelkreislauf
DE19925354C1 (de) * 1999-06-02 2000-08-03 Daimler Chrysler Ag Kraftfahrzeug
JP2002054418A (ja) * 2000-08-11 2002-02-20 Piolax Inc オイルストレーナとその製造方法
JP2002106316A (ja) * 2000-09-29 2002-04-10 Piolax Inc オイルストレーナ
US20020096221A1 (en) * 2001-01-24 2002-07-25 Federal-Mogul World Wide, Inc. Snap-together filter system for transmission oil pan and method of manufacture

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3022443A1 (de) * 1980-06-14 1981-12-24 Bayerische Motoren Werke AG, 8000 München Brennkraftmaschine mit einem saugrohr fuer den schmieroelkreislauf
DE19925354C1 (de) * 1999-06-02 2000-08-03 Daimler Chrysler Ag Kraftfahrzeug
JP2002054418A (ja) * 2000-08-11 2002-02-20 Piolax Inc オイルストレーナとその製造方法
JP2002106316A (ja) * 2000-09-29 2002-04-10 Piolax Inc オイルストレーナ
US20020096221A1 (en) * 2001-01-24 2002-07-25 Federal-Mogul World Wide, Inc. Snap-together filter system for transmission oil pan and method of manufacture

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITUB20151211A1 (it) * 2015-08-25 2015-11-25 Mdb Srl Sistema di pescaggio dell'olio autodirezionale contenuto nella coppa dell'olio e collegato al circuito di lubrificazione dei motori a combustione interna

Also Published As

Publication number Publication date
EP1698764B1 (fr) 2013-03-06
ITMI20050316A1 (it) 2006-09-03
EP1698764A3 (fr) 2009-04-15
ES2410586T3 (es) 2013-07-02

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