EP2108796A1 - Wasserauslaufkasten eines Verbrennungsmotors - Google Patents

Wasserauslaufkasten eines Verbrennungsmotors Download PDF

Info

Publication number
EP2108796A1
EP2108796A1 EP09155636A EP09155636A EP2108796A1 EP 2108796 A1 EP2108796 A1 EP 2108796A1 EP 09155636 A EP09155636 A EP 09155636A EP 09155636 A EP09155636 A EP 09155636A EP 2108796 A1 EP2108796 A1 EP 2108796A1
Authority
EP
European Patent Office
Prior art keywords
water outlet
outlet housing
wall
thermoplastic material
engine
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.)
Withdrawn
Application number
EP09155636A
Other languages
English (en)
French (fr)
Inventor
Didier Fromonteil
Nicolas Proust
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles 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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2108796A1 publication Critical patent/EP2108796A1/de
Withdrawn legal-status Critical Current

Links

Images

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
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
    • 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
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control

Definitions

  • the invention relates to the cooling of an internal combustion engine, and in particular the structure of a water outlet housing of such an engine.
  • the document FR 2 903 143 discloses a motor vehicle engine cooling circuit.
  • This circuit comprises a water outlet housing provided with a temperature sensor and a thermostat.
  • the housing is made of metallic material and comprises an outlet main pipe for transporting water to a radiator whose function is to cool said water, the cooled water being then conveyed by means of a pipe to the inlet of a water pump located upstream of the engine.
  • the pump helps to circulate the cooled water in the engine and the heated water is then recovered in the housing.
  • the housing comprises a first secondary water outlet pipe for supplying a heater with water and whose function is to create heating in the passenger compartment of the motor vehicle. The water recovered at the outlet of the heater is routed to the pump inlet for re-injection into the engine cooling circuit.
  • the circulation of water in this first secondary pipe is free.
  • the housing has a second secondary outlet pipe which connects directly to the pipe connecting the radiator to the inlet of the pump, and constituting a bypass portion bypassing the radiator.
  • the circulation of water in the second secondary pipe is controlled by means of a by-pass valve placed between the housing and the inlet of the pump. This bypass portion is used to directly send the heated water from the engine to the upstream portion of the cooling circuit positioned before said motor, through the housing.
  • exhaust gas recirculation involves introducing fresh air and exhaust into the combustion chamber of the engine.
  • recirculation rates of the order of 50%, which means that half of the gases sucked by a cylinder of a combustion engine internal are recirculated exhaust gases.
  • Increasingly stringent emission standards for pollutants have led to the generalization of EGR exhaust gas recirculation circuits for diesel engines.
  • the use of EGR for spark ignition engines is also growing.
  • Fiberglass-reinforced polyamide water outlet housings have been released.
  • polyamide PPA GF30 polyamide PPA GF30.
  • such a polyamide is relatively expensive.
  • such a material is not necessarily adapted to the increasing temperatures and stresses to which a water outlet housing is subjected.
  • such a water outlet housing may be damaged by oxidation at high temperature or undergo creep at high temperature.
  • the invention aims to solve one or more of these disadvantages.
  • the invention provides a water outlet housing for an internal combustion engine, comprising a wall of thermoplastic material forming a body defining an interior volume for containing coolant, the outer face of the wall being coated. of a metallic material.
  • the housing comprises hydraulic branches opening into the interior volume, the outer face of the hydraulic branches being coated with a metallic material.
  • the inner face of the wall is coated with a metallic material.
  • the entire surface of the wall is covered with a metallic material.
  • thermoplastic material is polyamide.
  • thermoplastic material is reinforced with glass fibers.
  • the metallic material is chemically compatible with the thermoplastic material.
  • the metallic material has a grain size of between 2 and 5000 nm and a thickness of between 25 ⁇ m and 5 mm.
  • the invention further relates to an internal combustion engine, comprising an engine block and a water outlet housing as described above, a cooling pipe of the engine block opening into the interior volume of the outlet housing of water.
  • the engine comprises pipes connected to said hydraulic branches.
  • the engine comprises an exhaust gas recirculation circuit component placed near the water outlet housing.
  • the invention further relates to a method of manufacturing a water outlet housing, comprising a step of coating a metal material an outer face of a wall of thermoplastic material of the water outlet housing, this wall forming a body defining an interior volume for containing coolant.
  • the invention proposes to coat with a metallic material the outer face of the body of a water outlet housing made of thermoplastic material.
  • thermoplastic material can be used to provide the body of the water outlet housing, without reducing the thermal radiation and creep resistance of the water outlet housing.
  • the Figures 1 and 2 represent a water outlet housing according to the invention 1 attached to a motor unit 3.
  • the water outlet housing 1 comprises a body 15 formed by a wall 16.
  • the body 15 defines an interior volume intended to contain and be crossed by engine coolant.
  • a cooling circuit of the engine block 3 opens into the interior volume of the housing 1.
  • a member of an exhaust gas recycling circuit 4 is placed near the water outlet housing 1. This member 4 generates a strong temperature in its environment, particularly in the area shown in broken lines and identified by the reference 5.
  • the outer face of the wall 16 is coated with a metal material.
  • the figure 4 is a sectional view of the body 15 of the water outlet housing 1.
  • the outer face of the wall 16 is coated with a metal material 61.
  • the inner face of the wall 16 is also coated with a metallic material 62.
  • the body 15 will be less subject to mechanical creep due to heating by coolant in the internal volume.
  • the entire surface of the wall 16 is covered with metallic material, in order to have an increased mechanical resistance to a high temperature in its environment.
  • the water outlet housing comprises several hydraulic branches 11 to 14. These hydraulic branches 11 to 14 open into the interior volume of the water outlet housing 1.
  • the hydraulic branches 11 to 14 are made of thermoplastic material.
  • the hydraulic branches can be made in one piece with the body 15, in particular using the same thermoplastic material as for the wall 16.
  • Ductings 21 to 24 of the engine are connected respectively to the hydraulic branches 11 to 14.
  • the pipes 21 to 24 are example fixed by fitting on the branches and held in position by clamps not shown.
  • the pipe 21 is connected to the inlet of a cooling radiator, the pipe 22 is connected to the outlet of a cooling radiator, the pipe 23 is connected to a water pump and the pipe 24 is connected to a fan heater .
  • the outer face of these hydraulic branches 11 to 14 is coated with a metal material 61.
  • the inner face of these branches 11 to 14 is coated with a metal material 62.
  • the body 15 of the water outlet housing 1 illustrated is made in two parts, it is also conceivable to provide a water outlet housing body integrally.
  • the figure 3 is a wall 16 of thermoplastic material free of metal coating and subjected for a long time to temperatures and critical radiation in the presence of air.
  • a wall 16 On such a wall 16 there is the appearance of a degraded surface layer 17 having shrinkage, internal stresses and the appearance of cracks 18.
  • the penetration of oxygen into the cracks 18 accelerates the degradation of the wall 16.
  • the presence of these cracks 18 also reduces the mechanical strength of the wall 16.
  • the degradation is also manifested by a loss of thickness of the parts, decreasing the mechanical strength of the wall 16.
  • the resistance to fatigue in pulsed pressure or vibratory then decreases sharply.
  • the metallic material forms a metal coating adhering to the inner face of the walls.
  • This coating will also increase the mechanical strength of the walls.
  • the coating may be formed by a deposit of a nanocrystalline metal alloy containing an alloy of nickel and iron.
  • a metal alloy is in particular marketed under the trade name Metafuse by the company Dupont. This alloy is particularly advantageous for coating thermoplastics reinforced with glass fibers.
  • the document W02006 / 063469 describes methods for forming fine-grained coatings by metal deposition.
  • the deposition is carried out by AC or continuous electrodeposition.
  • This document refers to already known techniques for depositing fine-grained metals by electroplating, by selecting suitable formulations and plating bath conditions.
  • This document also refers to methods of chemical vapor deposition or cold spraying.
  • This document recommends producing a metal coating having a grain size of between 2 and 5000 nm, a thickness of between 25 ⁇ m and 5 mm, and a hardness of between 200 and 3000 VHN.
  • the coating described has a resilience of between 0.25 and 25 MPa and an elastic limit of elongation of between 0.25% and 2%.
  • the document indicates roughness values to be respected for the surface to be metallized.
  • the invention makes it possible to use thermoplastic materials having a melting point less than or equal to 300 ° C., without affecting the reliability of the exchanger.
  • the thermoplastic material used for the walls of the water outlet housing may be polyamide.
  • the thickness of the walls advantageously comprises at least 50% of thermoplastic materials.
  • the walls of the water outlet housing are advantageously formed of a thermoplastic material reinforced by fibers, which increases their mechanical strength and their service life.
  • the reinforcing fibers may for example be glass fibers.
  • the thermoplastic material may in particular be PA66 GF35 (nylon 6.6 reinforced to 35% with glass fibers), PA66 GF 30 (nylon 6.6 reinforced with 30% glass fibers), or PPAGF30 (35% reinforced polyarylamide) by glass fibers).

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Exhaust Silencers (AREA)
EP09155636A 2008-04-08 2009-03-19 Wasserauslaufkasten eines Verbrennungsmotors Withdrawn EP2108796A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0852327A FR2929646B1 (fr) 2008-04-08 2008-04-08 Boitier de sortie d'eau de moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP2108796A1 true EP2108796A1 (de) 2009-10-14

Family

ID=40230030

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09155636A Withdrawn EP2108796A1 (de) 2008-04-08 2009-03-19 Wasserauslaufkasten eines Verbrennungsmotors

Country Status (2)

Country Link
EP (1) EP2108796A1 (de)
FR (1) FR2929646B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1007976A (en) * 1962-01-26 1965-10-22 Cav Ltd Internal combustion engine constructions
EP0473006A1 (de) * 1990-08-29 1992-03-04 Fritz Winter, Eisengiesserei O.H.G. Zylinderblock für Kraftfahrzeugmotoren
EP0825510A1 (de) * 1996-08-19 1998-02-25 Behr Thermot-tronik Italia S.p.A. Thermostatventilaufbau
EP1479886A1 (de) * 2003-05-22 2004-11-24 Mann + Hummel GmbH Wasserauslassgehäuse für eine Brennkraftmaschine und Herstellungsverfahren
WO2006063469A1 (en) 2004-12-17 2006-06-22 Integran Technologies, Inc. Article comprising a fine-grained metallic materal and a polymeric material
FR2903143A1 (fr) 2006-06-29 2008-01-04 Peugeot Citroen Automobiles Sa Circuit de refroidissement d'un moteur de vehicule automobile comprenant un tube de circulation de liquide pour une sonde de temperature

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1007976A (en) * 1962-01-26 1965-10-22 Cav Ltd Internal combustion engine constructions
EP0473006A1 (de) * 1990-08-29 1992-03-04 Fritz Winter, Eisengiesserei O.H.G. Zylinderblock für Kraftfahrzeugmotoren
EP0825510A1 (de) * 1996-08-19 1998-02-25 Behr Thermot-tronik Italia S.p.A. Thermostatventilaufbau
EP1479886A1 (de) * 2003-05-22 2004-11-24 Mann + Hummel GmbH Wasserauslassgehäuse für eine Brennkraftmaschine und Herstellungsverfahren
WO2006063469A1 (en) 2004-12-17 2006-06-22 Integran Technologies, Inc. Article comprising a fine-grained metallic materal and a polymeric material
FR2903143A1 (fr) 2006-06-29 2008-01-04 Peugeot Citroen Automobiles Sa Circuit de refroidissement d'un moteur de vehicule automobile comprenant un tube de circulation de liquide pour une sonde de temperature

Also Published As

Publication number Publication date
FR2929646A1 (fr) 2009-10-09
FR2929646B1 (fr) 2010-06-04

Similar Documents

Publication Publication Date Title
EP1954936B1 (de) Ventil mit bedienungsvorrichtung zwischen zwei auslasskanälen
EP2917551B1 (de) Motorisiertes ventil mit verbesserter übergegosser dichtung
KR101823893B1 (ko) 엔진 배기계 부품용 코팅재 및 이의 제조방법
FR2944333A1 (fr) Vanne comprenant un element chauffant electrique
WO2011001117A1 (fr) Revêtement de protection thermique pour une pièce de turbomachine et son procédé de réalisation
KR101640912B1 (ko) 고온 저마찰성 코팅층 및 이의 제조방법
EP2108796A1 (de) Wasserauslaufkasten eines Verbrennungsmotors
FR2927127A1 (fr) Dispositif de repartition des gaz d'admission pour un moteur a combustion interne.
EP2110538A1 (de) Auslassanschluss eines Belüftungskompressors
FR2929680A1 (fr) Support d'un doseur d'air d'admission et moteur comportant un tel support.
FR2931907A1 (fr) Raccord d'entree de compresseur d'air d'admission
EP3258078B1 (de) Kühlsystem eines wärmekraftmotors
FR2906571A1 (fr) Culasse munie d'inserts pour moteurs a combustion interne
FR2931227A1 (fr) Refroidisseur d'air suralimente pour moteur a egr basse pression
EP4094004B1 (de) Dreiwege-heizhülle und herstellungsverfahren
FR2931220A1 (fr) Couvercle de boite de vitesses et boite de vitesses comportant un tel couvercle
EP2452065B1 (de) Kondensationsfeste sperrschicht auf einem regenerativen schaltkreis
FR2907502A1 (fr) Dispositif de refroidissement pour moteur a combustion interne et procede de realisation d'une chambre d'eau culasse
FR2922960A1 (fr) Systeme de reinjection de gaz de carter et echangeur de chaleur mis en oeuvre dans ledit systeme
FR2849062A1 (fr) Composant expose a des contraintes tribologiques et moteur a gaz ou a combustion interne equipe d'un tel composant
FR3085724A1 (fr) Procede de refroidissement d’un injecteur pour moteur a injection directe d'essence
EP4069951A1 (de) Öldekanter mit einer frischluftkammer
FR2938295A1 (fr) Dispositif et procede de regulation thermique d'un moteur
EP2342435A1 (de) Vorrichtung zum kühlen eines verbrennungsmotors
FR3060659A1 (fr) Culasse comportant au moins un conduit de refroidissement amenage sur sa face d'echappement

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA RS

AKX Designation fees paid
REG Reference to a national code

Ref country code: DE

Ref legal event code: 8566

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20100415