EP1854968A2 - Système de chauffage de l'écoulement des vapeurs d'huile par un circuit externe au moteur du véhicule - Google Patents

Système de chauffage de l'écoulement des vapeurs d'huile par un circuit externe au moteur du véhicule Download PDF

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Publication number
EP1854968A2
EP1854968A2 EP07107838A EP07107838A EP1854968A2 EP 1854968 A2 EP1854968 A2 EP 1854968A2 EP 07107838 A EP07107838 A EP 07107838A EP 07107838 A EP07107838 A EP 07107838A EP 1854968 A2 EP1854968 A2 EP 1854968A2
Authority
EP
European Patent Office
Prior art keywords
engine
circuit
heating
oil vapour
external
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.)
Ceased
Application number
EP07107838A
Other languages
German (de)
English (en)
Other versions
EP1854968A3 (fr
Inventor
Valter Biasin
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 EP1854968A2 publication Critical patent/EP1854968A2/fr
Publication of EP1854968A3 publication Critical patent/EP1854968A3/fr
Ceased 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/0011—Breather valves
    • F01M2013/0027—Breather valves with a de-icing or defrosting system

Definitions

  • the present invention relates to a system for heating the oil vapour flowing through a circuit that is external to a vehicle engine.
  • blow-by refers to the leaking of gas between the piston/rings and barrel of the cylinder caused by the high pressure in the combustion chamber.
  • This vapour ends up inside the crankcase which must be provided with an appropriate breather tube to prevent damage to the engine.
  • This breather tube separates the drops of oil from the vapour, causing the oil to pass back into its circuit. A portion of the oil vapour remains as such.
  • heating resistors arranged on the outside of the pipes is known in the prior art.
  • these do not always suffice to ensure the best performance in all operating conditions, especially in very cold climates, leading to excessively long thermal transients.
  • the heating resistors use a large amount of power, making it necessary to use oversized batteries, and require additional electrical wiring, thus increasing costs of production.
  • the purpose of this invention is to overcome the aforesaid drawbacks and to produce a system for heating the oil vapour flowing through a circuit that is external to a vehicle engine, in which the external pipes are covered with an outer coaxial jacket consisting of a tube made of metal, preferably steel, wherein water coming from the engine cooling system is made to circulate, to produce a heat exchange effect, which heats quickly and sooner than when using heating resistors.
  • the water that is used is preferably water discharged from the heating circuit of the driver's cab, before reintroduction into the main engine circuit.
  • the object of the present invention is a system for heating the oil vapour flowing through a circuit that is external to a vehicle engine, as described more fully in the claims, which are an integral part of this description.
  • reference1 indicates a conduit (pipe, duct%) which carries oil vapour coming from the engine 2, in particular from a valve 3 that separates the drops of oil from the blow-by vapour coming from inside the engine, and makes said drops pass back into the main circuit in the engine.
  • the remaining part of the vapour that is not converted back into oil is conveyed through the pipe 1 and reintroduced into the air intake circuit of the engine, through the opposite end of the pipe 1', by means of a system that is not illustrated, being of a type known in the prior art, for example by means of a connection to the clean air intake duct of the engine, to be burnt in the combustion process.
  • the pipe 1 is covered at least partially by an outer jacket 4, for example consisting of a steel tube, that creates an hollow space closed at the sides around the same pipe, provided with an inlet opening 5 and an outlet opening 6, wherein water coming from the engine cooling system, not illustrated in figure 2, is made to circulate, to produce a heat exchange effect.
  • an outer jacket 4 for example consisting of a steel tube, that creates an hollow space closed at the sides around the same pipe, provided with an inlet opening 5 and an outlet opening 6, wherein water coming from the engine cooling system, not illustrated in figure 2, is made to circulate, to produce a heat exchange effect.
  • the pipe couplings for connection to the cooling circuit are connected to the openings 5 and 6 in a known way.
  • the water enters through the opening 5 and leaves through the opening 6, returning into the main engine cooling circuit through a point of introduction 7 directly into the engine water pump.
  • the water that is used is preferably water discharged from the heating circuit of the driver's cab, normally consisting of a line branching from the main cooling circuit, before returning to the main circuit in the engine.
  • the pipes are preferably made of metal (sheet metal or steel), with good heat conductivity and a low cost. The same applies for the outer jackets.
  • the length of the outer jacket 4 is defined according to the specific requirements of the engine on which it is used. The same applies for the diameter and length of the pipe 1.
  • the invention provides advantages in terms of costs, and also energy consumption, since it uses heat that is already available and does not have to be specifically generated, as in the case of heating resistors, allowing the reduction of the battery load. Moreover the system is made more reliable and economical by avoiding the use of heating resistors and the relative wiring.

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)
EP07107838A 2006-05-12 2007-05-09 Système de chauffage de l'écoulement des vapeurs d'huile par un circuit externe au moteur du véhicule Ceased EP1854968A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI20060942 ITMI20060942A1 (it) 2006-05-12 2006-05-12 Sistema di riscaldamento dei vapori di olio in circolazione esterna ad un motore di veicolo

Publications (2)

Publication Number Publication Date
EP1854968A2 true EP1854968A2 (fr) 2007-11-14
EP1854968A3 EP1854968A3 (fr) 2010-07-28

Family

ID=36698909

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07107838A Ceased EP1854968A3 (fr) 2006-05-12 2007-05-09 Système de chauffage de l'écoulement des vapeurs d'huile par un circuit externe au moteur du véhicule

Country Status (5)

Country Link
EP (1) EP1854968A3 (fr)
JP (1) JP2007303473A (fr)
CN (1) CN101070799A (fr)
IT (1) ITMI20060942A1 (fr)
RU (1) RU2446289C2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025062154A1 (fr) * 2023-09-22 2025-03-27 JCB Research Moteur à combustion interne

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768493A (en) 1984-04-27 1988-09-06 Honda Giken Kogyo Kabushiki Kaisha Blow-by gas heating system for internal combustion engines
JP2004204720A (ja) * 2002-12-24 2004-07-22 Suzuki Motor Corp ブローバイガス環流装置

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3726332C1 (de) * 1987-08-07 1988-06-23 Bayerische Motoren Werke Ag Ansaugleitungsteil einer Brennkraftmaschine
DE3824791A1 (de) * 1988-07-21 1990-01-25 Porsche Ag Kurbelgehaeuseentlueftung
RU2052640C1 (ru) * 1992-11-02 1996-01-20 Производственное объединение "Турбомоторный завод" Устройство для отделения жидкости от газа
DE4438093C1 (de) * 1994-10-25 1996-03-28 Continental Ag Be- und Entlüftungseinrichtung für Teile von Kraftfahrzeugmotoren
JP3282072B2 (ja) * 1997-09-26 2002-05-13 株式会社クボタ エンジンのブリーザ装置
JP2000274223A (ja) * 1999-03-24 2000-10-03 Kubota Corp 吸気還流式ブリーザ装置
DE102004031499B4 (de) * 2004-06-30 2009-08-13 Daimler Ag Kurbelgehäuseentlüftungsleitung

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4768493A (en) 1984-04-27 1988-09-06 Honda Giken Kogyo Kabushiki Kaisha Blow-by gas heating system for internal combustion engines
JP2004204720A (ja) * 2002-12-24 2004-07-22 Suzuki Motor Corp ブローバイガス環流装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2025062154A1 (fr) * 2023-09-22 2025-03-27 JCB Research Moteur à combustion interne

Also Published As

Publication number Publication date
CN101070799A (zh) 2007-11-14
JP2007303473A (ja) 2007-11-22
EP1854968A3 (fr) 2010-07-28
RU2446289C2 (ru) 2012-03-27
ITMI20060942A1 (it) 2007-11-13
RU2007117684A (ru) 2008-11-20

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