EP1136583B2 - Method and apparatus for thermally coating the cylinder surfaces of combustion engines - Google Patents

Method and apparatus for thermally coating the cylinder surfaces of combustion engines Download PDF

Info

Publication number
EP1136583B2
EP1136583B2 EP01810005A EP01810005A EP1136583B2 EP 1136583 B2 EP1136583 B2 EP 1136583B2 EP 01810005 A EP01810005 A EP 01810005A EP 01810005 A EP01810005 A EP 01810005A EP 1136583 B2 EP1136583 B2 EP 1136583B2
Authority
EP
European Patent Office
Prior art keywords
suction
air
cylinder
accordance
stubs
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.)
Expired - Lifetime
Application number
EP01810005A
Other languages
German (de)
French (fr)
Other versions
EP1136583B1 (en
EP1136583A1 (en
Inventor
Silvano Keller
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.)
Oerlikon Metco AG
Original Assignee
Sulzer Metco AG
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=4518159&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1136583(B2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Sulzer Metco AG filed Critical Sulzer Metco AG
Publication of EP1136583A1 publication Critical patent/EP1136583A1/en
Publication of EP1136583B1 publication Critical patent/EP1136583B1/en
Application granted granted Critical
Publication of EP1136583B2 publication Critical patent/EP1136583B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
    • C23C4/14—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying for coating elongate material
    • C23C4/16—Wires; Tubes
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying

Definitions

  • the invention relates to a method for thermal coating of cylinder walls of internal combustion engines according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 5.
  • the object of the invention is to propose an easy-to-use method for thermal coating of cylinder walls of engine blocks of internal combustion engines, by means of which on the one hand, the quality of the applied layer is improved and on the other hand, the engine block is protected from contamination.
  • the layer quality is improved in two ways by the proposed measure and that at the same time the engine block can be protected from contamination.
  • the uncoated coating particles are reliably removed and the content of oxygen (oxide content) bound in the layer is kept in a range in which Both the tribological properties of the layer as well as their machinability are optimized.
  • cooling of the engine block is caused by the air flow.
  • the proposed measure also reduces the contamination of the plasmatron.
  • the suction device 18 has four suction nozzles 12, a control device 20 provided with louvers and a suction pump 25.
  • the control device 20 has an air flap battery 21 provided with four louvers.
  • the four extraction nozzles 12 are received in a holder 13 and connected via flexible hoses 14 to the control device 20, wherein the hoses 14 are shown only hinted.
  • the hoses 14 lead to a connection element 15, which is connected via lines 17 to the control device 20.
  • the control device 20 is additionally provided with pressure sensors (not shown) by means of which the air pressure prevailing during suction in the suction lines 14, 17 can be measured.
  • the coating of the cylinder liners 8 proceeds as follows: First, the four extraction nozzles 12 are brought from below through the crankcase 10 of the engine block 6 to the lower end 9 of the cylinder bores 7. Thereafter, the actual coating process is started by the plasma spraying devices 1, 2 introduced into the cylinder bores 7 and the walls 8 are coated. During coating, air is continuously drawn off by means of the suction device 18. It will measured by the pressure sensors of the prevailing in the suction lines 14, 17 air pressure. Due to the measured air pressure can be closed on the flow velocity of the air flowing through the cylinder bores 7 air, wherein the electronic means for calculating the air velocity are not shown in detail.
  • the louvers and thus the Absaugquerites be changed so that the air velocity within the cylinder bores 7 in the desired range between 7 and 12 m / s can be maintained.
  • the two other cylinder bores 7 are also coated and the flow velocity of the air flowing through these cylinder bores 7 is measured and kept within the predetermined value in the manner previously described.
  • the content of bound oxygen in the layer in a range of about 1 to 4 weight percent, whereby both the tribological properties of the layer as well as their machinability are optimized.
  • a cooling of the engine block 6 is effected by the air flow and the pollution of the respective Plasmatrons 3, 4 reduced.
  • suction device is suitable for the coating of four-cylinder in-line engines and eight-cylinder engines in V-shape. It is understood that suction devices for other variants of engine blocks can also be provided.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Coating By Spraying Or Casting (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)

Abstract

Cylinder barrels thermal coating method involves moving plasma spraying gun (1, 2) having plasma spraying head(s) (3, 4) into interior of cylinder bore of cylinder barrel (8) to be coated. A flow of air with flow velocity of 7-12 m/s, is then created via cylinder bore (7) of barrel, and coating material is sprayed onto cylinder barrel. The flow of air is maintained during entire coating operation. An Independent claim is also included for an apparatus for thermally coating the cylinder barrels of a cylinder block of a combustion engine.

Description

Die Erfindung betrifft ein Verfahren zum thermischen Beschichten von Zylinderwandungen von Verbrennungsmotoren gemäss dem Oberbegriff des Anspruchs 1 sowie eine Vorrichtung zur Durchführung des Verfahrens gemäss dem Oberbegriff des Anspruchs 5.The invention relates to a method for thermal coating of cylinder walls of internal combustion engines according to the preamble of claim 1 and to an apparatus for carrying out the method according to the preamble of claim 5.

Bei der Herstellung von Verbrennungsmotoren finden heutzutage vermehrt Motorblöcke aus Leichtmetall Verwendung. Währenddem zur Bildung der Zylinderlaufflächen bis anhin zumeist Gusseisenbüchsen in den Motorblock eingesetzt wurden, geht man nun dazu über, die Zylinderwandungen von Aluminium-Motorblöcken mittels einer eisenhaltigen Laufschicht zu versehen, wobei zum Aufbringen dieser Laufschicht vorzugsweise rotierende Plasmatrons verwendet werden. Eine grundsätzliche Problematik beim Plasmabeschichten von Substraten besteht darin, dass nicht alle im Plasmastrahl aufgeschmolzenen Beschichtungspartikel an der Substratoberfläche haften bleiben. Währenddem dies in vielen Fällen nicht von Bedeutung ist, muss beim Beschichten von Motorblöcken aus verständlichen Gründen darauf geachtet werden, dass keine Beschichtungspartikel im Motorblock zurückbleiben. Bisher wurde diesem Problem zumeist dadurch abgeholfen, dass Abdeckungen angebracht wurden, mittels welchen die exponierten Stellen des Motorblocks geschützt wurden. Nachteilig an derartigen Abdeckungen ist, dass Wärmestaus entstehen, die zu einer hohen thermischen Belastung des Motorblocks führen und ausserdem unerwünschte Partikeleinschlüsse in der aufgebrachten Schicht entstehen lassen, da Umgebungsstaub und nicht aufgeschmolzene bzw. wieder abgekühlte Partikel vom Beschichtungsstrahl mitgerissen werden und zu unerwünschten Einschlüssen führen.In the manufacture of internal combustion engines find today increasingly engine blocks made of light metal use. While until now mostly cast iron bushings were used in the engine block to form the cylinder surfaces, it is now necessary to provide the cylinder walls of aluminum engine blocks by means of an iron-containing running layer, preferably using rotating plasmatrons for applying this running layer. A fundamental problem in the plasma coating of substrates is that not all of the coating particles melted in the plasma jet remain adhered to the substrate surface. While this is not important in many cases, care must be taken when coating engine blocks for understandable reasons that no coating particles remain in the engine block. So far, this problem has been remedied mostly by the fact that covers were attached, by means of which the exposed areas of the engine block were protected. A disadvantage of such covers that heat accumulation arise that lead to a high thermal load on the engine block and also undesirable particle inclusions in the applied layer arise because ambient dust and not melted or cooled again particles are entrained by the coating jet and lead to unwanted inclusions.

Aus der US 5 573 814 ist ein Verfahren zum Abdecken des äusseren Endes von Zylinderbohrungen während des thermischen Beschichtens bekannt. Dazu ist eine aufblasbare Maske vorgesehen, welche von unten gegen die Zylinderbohrung gedrückt wird. Die Maske ist mit einer Absaugleitung verbunden, über welche Gase aus der Zylinderbohrung abgesaugt werden können.From the US Pat. No. 5,573,814 For example, a method of covering the outer end of cylinder bores during thermal coating is known. For this purpose, an inflatable mask is provided, which is pressed from below against the cylinder bore. The mask is connected to a suction line, via which gases can be sucked out of the cylinder bore.

Die Aufgabe der Erfindung besteht nun darin, ein einfach anzuwendendes Verfahren zum thermischen Beschichten von Zylinderwandungen von Motorblöcken von Verbrennungsmotoren vorzuschlagen, mittels welchem zum einen die Qualität der aufgetragenen Schicht verbessert wird und zum anderen der Motorblock vor Verunreinigungen geschützt wird.The object of the invention is to propose an easy-to-use method for thermal coating of cylinder walls of engine blocks of internal combustion engines, by means of which on the one hand, the quality of the applied layer is improved and on the other hand, the engine block is protected from contamination.

Diese Aufgabe wird durch die im Kennzeichen des Anspruchs 1 angeführten Verfahrensschritte gelöst.This object is achieved by the method steps mentioned in the characterizing part of claim 1.

Es hat sich überraschenderweise gezeigt, dass durch die vorgeschlagene Massnahme die Schichtqualität in zweierlei Hinsicht verbessert wird und dass gleichzeitig auch der Motorblock vor Verunreinigungen geschützt werden kann. Indem die Luft während des thermischen Beschichtens mit einer Geschwindigkeit zwischen 7 und 12 m/s durch die Zylinderbohrung geleitet wird, werden die nicht aufgetragenen Beschichtungspartikel zuverlässig abgeführt und der Gehalt von in der Schicht gebundenem Sauerstoff (Oxydanteil) wird in einem Bereich gehalten, in dem sowohl die tribologischen Eigenschaften der Schicht wie auch deren Zerspanbarkeit optimiert werden. Zudem wird durch die Luftströmung eine Kühlung des Motorblocks bewirkt. Schliesslich wird durch die vorgeschlagene Massnahme auch die Verschmutzung des Plasmatrons reduziert.It has surprisingly been found that the layer quality is improved in two ways by the proposed measure and that at the same time the engine block can be protected from contamination. By passing the air through the cylinder bore at a speed between 7 and 12 m / s during the thermal coating, the uncoated coating particles are reliably removed and the content of oxygen (oxide content) bound in the layer is kept in a range in which Both the tribological properties of the layer as well as their machinability are optimized. In addition, cooling of the engine block is caused by the air flow. Finally, the proposed measure also reduces the contamination of the plasmatron.

Bevorzugte Ausführungsformen des Verfahrens sind in den abhängigen Ansprüchen 2 bis 4 umschrieben.Preferred embodiments of the method are described in the dependent claims 2 to 4.

Im Anspruch 5 wird eine Vorrichtung zur Durchführung des Verfahrens vorgeschlagen. Eine bevorzugte Ausführung dieser Vorrichtung ist im abhängigen Anspruch 6 definiert.In claim 5, an apparatus for performing the method is proposed. A preferred embodiment of this device is defined in the dependent claim 6.

Anhand einer Zeichnung wird ein bevorzugtes Ausführungsbeispiel der Erfindung näher erläutert. Die einzige Zeichnung zeigt dabei eine schematische Ansicht auf einen Motorblock zusammen mit einer Absaugvorrichtung.Reference to a drawing, a preferred embodiment of the invention is explained in detail. The single drawing shows a schematic view of an engine block together with a suction device.

Aus dieser Figur sind in schematischer Darstellung zwei Plasmaspritzgeräte 1, 2, ein Motorblock 6 sowie eine Absaugvorrichtung 18 ersichtlich. Zum Beschichten der Zylinderlaufbahnen 8 des 4-zylindrigen Motorblocks sind Plasmaspritzgeräte 1, 2 mit rotierenden Brennerköpfen 3, 4 vorgesehen. Die Absaugvorrichtung 18 weist vier Absaugstutzen 12, eine mit Luftklappen versehene Steuereinrichtung 20 sowie eine Absaugpumpe 25 auf. Bei der Steuereinrichtung 20 sind aus dieser Darstellung nicht die eigentlichen Luftklappen sondern nur deren Verstellmechanismus 22 ersichtlich. Die Steuereinrichtung 20 weist im vorliegenden Fall eine mit vier Luftklappen versehene Luftklappenbatterie 21 auf. Die vier Absaugstutzen 12 sind in einer Halterung 13 aufgenommen und über flexible Schläuche 14 mit der Steuereinrichtung 20 verbunden, wobei die Schläuche 14 nur andeutungsweise eingezeichnet sind. Die Schläuche 14 führen zu einem Anschlusselement 15, welches über Leitungen 17 mit der Steuereinrichtung 20 verbunden ist. Von der Steuereinrichtung 20 führen Leitungen 23 zu der Absaugpumpe 25. Die Steuereinrichtung 20 ist zudem mit Drucksensoren (nicht eingezeichnet) versehen, mittels welchen der beim Absaugen in den Absaugleitungen 14, 17 vorherrschende Luftdruck gemessen werden kann.From this figure, two plasma spraying devices 1, 2, an engine block 6 and a suction device 18 can be seen in a schematic representation. For coating the cylinder liners 8 of the 4-cylinder engine block, plasma spraying devices 1, 2 with rotating burner heads 3, 4 are provided. The suction device 18 has four suction nozzles 12, a control device 20 provided with louvers and a suction pump 25. In the control device 20 are not the actual air dampers but only the adjustment mechanism 22 can be seen from this illustration. In the present case, the control device 20 has an air flap battery 21 provided with four louvers. The four extraction nozzles 12 are received in a holder 13 and connected via flexible hoses 14 to the control device 20, wherein the hoses 14 are shown only hinted. The hoses 14 lead to a connection element 15, which is connected via lines 17 to the control device 20. The control device 20 is additionally provided with pressure sensors (not shown) by means of which the air pressure prevailing during suction in the suction lines 14, 17 can be measured.

Das Beschichten der Zylinderlaufbahnen 8 geht folgendermassen vonstatten: Zuerst werden die vier Absaugstutzen 12 von unter durch das Kurbelgehäuse 10 des Motorblocks 6 an das untere Ende 9 der Zylinderbohrungen 7 herangeführt. Danach wird der eigentliche Beschichtungsvorgang gestartet, indem die Plasmaspritzgeräte 1, 2 in die Zylinderbohrungen 7 eingeführt und deren Wandungen 8 beschichtet werden. Während des Beschichtens wird mittels der Absaugvorrichtung 18 kontinuierlich Luft abgesaugt. Dabei wird mittels der Drucksensoren der in den Absaugleitungen 14, 17 vorherrschende Luftdruck gemessen. Aufgrund des gemessenen Luftdrucks kann auf die Strömungsgeschwindigkeit der durch die Zylinderbohrungen 7 strömenden Luft geschlossen werden, wobei die elektronischen Mittel zum Berechnen der Luftgeschwindigkeit nicht näher dargestellt sind. Mittels des Verstellmechanismus 22 können die Luftklappen und damit der Absaugquerschnitt verändert werden, so dass die Luftgeschwindigkeit innerhalb der Zylinderbohrungen 7 im gewünschten Bereich zwischen 7 und 12 m/s gehalten werden kann. Nachdem zwei der vier Zylinderbohrungen 7 beschichtet wurden, werden die beiden anderen Zylinderbohrungen 7 ebenfalls beschichtet und die Strömungsgeschwindigkeit der durch diese Zylinderbohrungen 7 strömenden Luft in der vorgängig beschriebenen Weise gemessen und innerhalb des vorgegebenen Wertes gehalten.The coating of the cylinder liners 8 proceeds as follows: First, the four extraction nozzles 12 are brought from below through the crankcase 10 of the engine block 6 to the lower end 9 of the cylinder bores 7. Thereafter, the actual coating process is started by the plasma spraying devices 1, 2 introduced into the cylinder bores 7 and the walls 8 are coated. During coating, air is continuously drawn off by means of the suction device 18. It will measured by the pressure sensors of the prevailing in the suction lines 14, 17 air pressure. Due to the measured air pressure can be closed on the flow velocity of the air flowing through the cylinder bores 7 air, wherein the electronic means for calculating the air velocity are not shown in detail. By means of the adjusting mechanism 22, the louvers and thus the Absaugquerschnitt be changed so that the air velocity within the cylinder bores 7 in the desired range between 7 and 12 m / s can be maintained. After two of the four cylinder bores 7 have been coated, the two other cylinder bores 7 are also coated and the flow velocity of the air flowing through these cylinder bores 7 is measured and kept within the predetermined value in the manner previously described.

Es hat sich gezeigt, dass eine Luftgeschwindigkeit von 7 bis 12 m/s in vielerlei Hinsicht das Optimum darstellen dürfte. Zum einen wird dadurch sichergestellt, dass die nicht aufgetragenen Beschichtungspartikel sowie anderer Staub sicher abgeführt werden, auch wenn zwischen dem jeweiligen Absaugstutzen 12 und dem unteren Ende 9 der Zylinderbohrung 7 ein Spalt bestehen sollte. Daher kann auf eine Abdichtung zwischen dem unteren Ende 9 der Zylinderbohrung 7 und dem jeweiligen Absaugstutzen 12 verzichtet werden, so dass letztlich eine schnelle, effiziente und kostengünstige Beschichtung der Zylinderbohrungen 7 begünstigt wird. Ausserdem wird durch eine Luftgeschwindigkeit von 7 bis 12 m/s der Gehalt von in der Schicht gebundenem Sauerstoff in einem Bereich von ca. 1 bis 4 Gewichtsprozent gehalten, wodurch sowohl die tribologischen Eigenschaften der Schicht wie auch deren Zerspanbarkeit optimiert werden. Zudem wird durch die Luftströmung eine Kühlung des Motorblocks 6 bewirkt und die Verschmutzung des jeweiligen Plasmatrons 3, 4 reduziert. Wird die Luft schneller als mit 12 m/s durch die Zylinderbohrungen 7 geleitet, so besteht die Gefahr, dass der Plasmastrahl gestört wird und nicht mehr alle Beschichtungspartikel im Plasmastrahl vollständig aufgeschmolzen werden, was letztlich zu einer qualitativ unbefriedigenden Schicht mit beispielsweise zu hoher Porosität führt. Wird die Luft langsamer als mit 7 m/s durch die Zylinderbohrungen 7 geleitet, so besteht die Gefahr, dass der Gehalt an gebundenem Sauerstoff in der Schicht zu hoch ist, was wiederum auch zu einer qualitativ unbefriedigenden Schichtqualität führen würde. Zudem besteht bei zu tiefer Luftgeschwindigkeit die Gefahr, dass die Staubbelastung innerhalb des zu beschichtenden Zylinders 7 zu hoch ist und einzelne Partikel durch einen allenfalls zwischen dem Ansaugstutzen 12 und dem unteren Ende 9 der Zylinderbohrung 7 bestehenden Spalt in das Kurbelgehäuse 10 des Motorblocks 6 eindringen können. Bei einem V-Motor können einzelne Partikel ggf. auch in die gegenüberliegenden Zylinderbohrungen gelangen.It has been shown that an airspeed of 7 to 12 m / s is likely to be the optimum in many respects. On the one hand, this ensures that the uncoated coating particles and other dust are reliably removed, even if there should be a gap between the respective suction nozzle 12 and the lower end 9 of the cylinder bore 7. Therefore, can be dispensed with a seal between the lower end 9 of the cylinder bore 7 and the respective exhaust nozzle 12, so that ultimately a fast, efficient and cost-effective coating of the cylinder bores 7 is favored. In addition, by an air velocity of 7 to 12 m / s, the content of bound oxygen in the layer in a range of about 1 to 4 weight percent, whereby both the tribological properties of the layer as well as their machinability are optimized. In addition, a cooling of the engine block 6 is effected by the air flow and the pollution of the respective Plasmatrons 3, 4 reduced. If the air is passed through the cylinder bores 7 faster than at 12 m / s, there is a risk that the plasma jet will be disturbed and not all of the coating particles in the plasma jet will be completely melted, which ultimately leads to a qualitatively unsatisfactory layer with, for example, too high a porosity , If the air is conducted through the cylinder bores 7 at a slower rate than at 7 m / s, there is a risk that the content of bound oxygen in the layer will be too high, which in turn would also lead to a quality of quality which is unsatisfactory in quality. In addition, if the air velocity is too low, there is the risk that the dust load within the cylinder 7 to be coated is too high and individual particles can penetrate into the crankcase 10 of the engine block 6 through a gap existing at most between the intake manifold 12 and the lower end 9 of the cylinder bore 7 , In a V-engine, individual particles may also get into the opposite cylinder bores.

Das gezeigte Ausführungsbeispiel einer Absaugvorrichtung eignet sich für die Beschichtung von Vierzylinder-Reihenmotoren sowie von Achtzylindermotoren in V-Form. Es versteht sich, dass ebenso Absaugvorrichtungen für andere Varianten von Motorblöcken vorgesehen werden können.The illustrated embodiment of a suction device is suitable for the coating of four-cylinder in-line engines and eight-cylinder engines in V-shape. It is understood that suction devices for other variants of engine blocks can also be provided.

Claims (6)

  1. A method for the thermal coating of cylinder walls (8) of engine blocks (6) of combustion engines in which an air flow is produced by suction during the coating process in that the air is sucked away downwardly through the crankcase (10) of the engine block, characterised in that a plurality of suction stubs (12) connected to a suction pump (25) are introduced through the crankcase (10) of the engine block (6) from below and guided up to the lower side (9) of the cylinder bores (7) and the air is led through the cylinder bore(s) (7), which are in the active coating process, at a speed of between 7 and 12 m/s.
  2. A method in accordance with claim 1, characterised in that a layer containing metal, preferably containing iron, is applied to the cylinder walls (8) by means of plasma spraying.
  3. A method in accordance with claim 1 or claim 2, characterised in that the air pressure prevailing in the suction lines (14) is measured during the coating process; and in that the speed of the air led through the cylinder bore(s) (7) is determined on the basis of the values measured.
  4. A method in accordance with claim 3, characterised in that the air speed determined is used for the control of an adjustment mechanism (22) actively connected to air flaps in the suction lines.
  5. An apparatus for the carrying out of the method in accordance with claim 1, characterised in that the apparatus has a plurality of suction stubs (12) which are connected to a central suction pump (25) via suction lines (14) which are at least partly flexible, and the apparatus has pressure sensors for detecting the air pressure prevailing in the suction stubs (12) or in the suction lines and means (22) to change the line cross-section relevant to suction for the control of the air speed within the cylinder bores in the range between 7 and 12 m/s, wherein a battery (21) of air flaps for the individual changing of the respective cross-section of the suction lines (17) is arranged between the suction stubs (12) and the suction pump (25).
  6. An apparatus in accordance with claim 5, characterised in that at least one pressure sensor is provided for the detection of the air pressure prevailing in the suction stubs (12) or in the suction lines (14, 17, 23); and in that electronic means are provided for the calculation of the air speed on the basis of the air pressure.
EP01810005A 2000-03-20 2001-01-04 Method and apparatus for thermally coating the cylinder surfaces of combustion engines Expired - Lifetime EP1136583B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH525002000 2000-03-20
CH5252000 2000-03-20

Publications (3)

Publication Number Publication Date
EP1136583A1 EP1136583A1 (en) 2001-09-26
EP1136583B1 EP1136583B1 (en) 2004-05-06
EP1136583B2 true EP1136583B2 (en) 2008-12-17

Family

ID=4518159

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01810005A Expired - Lifetime EP1136583B2 (en) 2000-03-20 2001-01-04 Method and apparatus for thermally coating the cylinder surfaces of combustion engines

Country Status (9)

Country Link
US (1) US6503577B2 (en)
EP (1) EP1136583B2 (en)
JP (2) JP3877278B2 (en)
KR (1) KR100738790B1 (en)
AT (1) ATE266104T1 (en)
CA (1) CA2334419C (en)
DE (1) DE50102175D1 (en)
ES (1) ES2220697T5 (en)
TR (1) TR200401050T4 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3969289B2 (en) * 2002-11-20 2007-09-05 トヨタ自動車株式会社 Thermal spraying equipment and thermal spraying method
US8664292B2 (en) * 2004-05-27 2014-03-04 Croda International Plc Compositions and articles containing a cross-linked polymer matrix and an immobilized active liquid, as well as methods of making and using the same
US20110117156A1 (en) * 2004-05-27 2011-05-19 Arizona Chemical Company Compositions and articles containing an active liquid in a polymeric matrix and methods of making and using the same
JP5485507B2 (en) * 2004-05-27 2014-05-07 アリゾナ・ケミカル・カンパニー・エルエルシー Compositions and articles containing a crosslinked polymer matrix and an immobilized active liquid, and methods for making and using said compositions and articles
JP4497086B2 (en) * 2005-01-28 2010-07-07 日産自動車株式会社 Cylinder block spraying masking method, masking apparatus and gas jet nozzle
CA2587409C (en) 2006-07-24 2013-10-29 Sulzer Metco Ag A masking system for the masking of a cylinder bore
EP1884293B1 (en) * 2006-07-24 2009-08-12 Sulzer Metco AG Masking system for masking a cylinder hole
EP1886737A1 (en) * 2006-07-24 2008-02-13 Sulzer Metco AG Masking system for masking a crank case in a combustion engine
HUE036204T2 (en) * 2013-07-26 2018-06-28 Oerlikon Metco Ag Wohlen Method for cleaning a burner of a plasma coating installation and plasma coating installation
DE102016116815A1 (en) * 2016-09-08 2018-03-08 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Process for coating a cylinder of an internal combustion engine and cylinder for an internal combustion engine
US10435779B2 (en) 2017-03-14 2019-10-08 Ford Motor Company Precision air flow routing devices and method for thermal spray coating applications
DE102017219521A1 (en) * 2017-11-02 2019-05-02 Volkswagen Aktiengesellschaft Arrangement and method for measuring a flow rate of an air purge for a thermal coating process of cylinder bores of a cylinder crankcase

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573814A (en) † 1995-10-30 1996-11-12 Ford Motor Company Masking cylinder bore extremities from internal thermal spraying

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1259599A (en) * 1968-05-15 1972-01-05
DE2254491C3 (en) * 1972-11-07 1975-04-17 Siemens Ag, 1000 Berlin Und 8000 Muenchen Process for coating surfaces on workpieces by spraying on laminates melted in an arc, as well as an arrangement for carrying out the process
JPS5547377A (en) * 1978-09-29 1980-04-03 Seiya Adachi Plating method
JPS5952570A (en) * 1982-09-20 1984-03-27 Nissan Motor Co Ltd Coating method
CA2164142A1 (en) * 1994-12-09 1996-06-10 V. Durga Nageswar Rao Method of making engine blocks with coated cylinder bores
DE19705628B4 (en) * 1997-02-14 2005-07-28 Audi Ag Method and device for thermal coating of bores
JP3172121B2 (en) * 1997-06-06 2001-06-04 日本碍子株式会社 Thermal spraying method for inner peripheral surface of hollow cylindrical tube
JPH11221516A (en) * 1998-02-10 1999-08-17 Kansai Paint Co Ltd Coating method

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5573814A (en) † 1995-10-30 1996-11-12 Ford Motor Company Masking cylinder bore extremities from internal thermal spraying

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
Artikel:"Method and Apparatus for the Application of Thermal Spray Coatings onto Aluminium Engine Cylinder Bores" von L.Byrnes et al., aus Proceedings of the 7th National Thermal Spray Conference 20-24 June 1994, Boston, Massachussets, Seite 39-42. †
Auszug aus dem "Lehrbuch für den Maschinenbau", Dubbel, 14.Auflage (1981), Seite 164-165. †
Versuchsprotokoll der Einsprechenden vom 27.10.99, "Einfluß der Absaugung unter Berücksichtigung der Wechselwirkungen des Brennerkühlstrahls, der Pulverkornfraktion und der Pulverförderrate" von Dr.Izquierdo, FT4/T1,; als Zeuge für das Versuchsprotokoll wird benannt:Dr. Patrick Izquierdo, SedanStr. 27, 89077 Ulm, †

Also Published As

Publication number Publication date
TR200401050T4 (en) 2004-07-21
ES2220697T3 (en) 2004-12-16
JP2001316794A (en) 2001-11-16
KR100738790B1 (en) 2007-07-12
CA2334419C (en) 2004-12-21
KR20010089268A (en) 2001-09-29
CA2334419A1 (en) 2001-09-20
US20010022995A1 (en) 2001-09-20
ATE266104T1 (en) 2004-05-15
EP1136583B1 (en) 2004-05-06
DE50102175D1 (en) 2004-06-09
EP1136583A1 (en) 2001-09-26
JP2006265736A (en) 2006-10-05
JP3877278B2 (en) 2007-02-07
ES2220697T5 (en) 2009-05-12
US6503577B2 (en) 2003-01-07

Similar Documents

Publication Publication Date Title
EP1136583B2 (en) Method and apparatus for thermally coating the cylinder surfaces of combustion engines
DE69201212T2 (en) Vacuum coating device.
EP2075074B1 (en) Masking system for masking a crank case for a combustion engine
DE112006004168T5 (en) Gas wiper device with multiple nozzles
US4287238A (en) Protective atmosphere gas wiping apparatus and method of using
EP0913203B1 (en) Method and apparatus for powder coating with purging air supply
EP1884293B1 (en) Masking system for masking a cylinder hole
DE3040503C2 (en)
EP2616567B9 (en) Method of thermal coating
DE102005015881A1 (en) Repairing damaged locations on outer skins of aircraft, employs cold-gas powder spraying gun to form permanent deposit of aluminum alloy and pure aluminum
DE2726078A1 (en) METHOD AND DEVICE FOR REMOVING SLAG, O.DGL. OF MOLTEN METAL
DE2542769B2 (en) Device for the external coating of endless metal pipes
DE112016006868B4 (en) A nitrogen cloud forming apparatus for producing a hot-dip coated steel sheet having excellent surface quality and a method of producing a zinc-aluminum hot-dip coated steel sheet using the same
EP1350862A1 (en) Process and apparatus for thermally coating a surface
WO2018228661A1 (en) Nozzle for a hot-dip coating system and method for operating same
EP1152139A1 (en) Device for coating cylinder walls of engine blocks
DE602004000492T2 (en) Method and apparatus for applying a fluoropolymer layer to the thread of a nut
DE102020211720A1 (en) Process and spray device for the thermal surface treatment of a metallic product
DE68915256T2 (en) Device for applying a powdery solid distributed in a gas to a moving substrate.
DE9007649U1 (en) Device for treating a coated substrate web
DE2213984A1 (en) DEVICE FOR SPRAYING WIRE OR ROD-SHAPED STEEL PARTS, IN PARTICULAR TENSIONING LINES FOR STRUCTURAL PARTS MADE OF STRENGTHENED CONCRETE, WITH RUST PROTECTIVE
AT402266B (en) CONTINUOUS CASTING PLANT
DE2333854C3 (en) Method for preventing surface defects in hot-dip galvanizing of steel strip, and apparatus therefor
DE102010052555A1 (en) Method for coating components used in gas turbine engine of aircraft, involves providing coating material in form of powder particles that are prepared by performing mechanical grinding process at low temperature
DE102018104217A1 (en) PRECISION DEVICES FOR AIR FLOW CONTROL AND METHOD FOR THERMAL SPRAY COATING APPLICATIONS

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 CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

17P Request for examination filed

Effective date: 20011017

AKX Designation fees paid

Free format text: AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

16A New documents despatched to applicant after publication of the search report

Effective date: 20020627

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040506

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040506

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040506

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SULZER MANAGEMENT AG PATENTABTEILUNG/0067

Ref country code: CH

Ref legal event code: EP

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20040506

REF Corresponds to:

Ref document number: 50102175

Country of ref document: DE

Date of ref document: 20040609

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040806

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040806

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2220697

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050104

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050104

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050131

PLAQ Examination of admissibility of opposition: information related to despatch of communication + time limit deleted

Free format text: ORIGINAL CODE: EPIDOSDOPE2

PLAR Examination of admissibility of opposition: information related to receipt of reply deleted

Free format text: ORIGINAL CODE: EPIDOSDOPE4

PLBQ Unpublished change to opponent data

Free format text: ORIGINAL CODE: EPIDOS OPPO

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

26 Opposition filed

Opponent name: DAIMLERCHRYSLER AG

Effective date: 20050203

PLAX Notice of opposition and request to file observation + time limit sent

Free format text: ORIGINAL CODE: EPIDOSNOBS2

BERE Be: lapsed

Owner name: *SULZER METCO A.G.

Effective date: 20050131

PLAF Information modified related to communication of a notice of opposition and request to file observations + time limit

Free format text: ORIGINAL CODE: EPIDOSCOBS2

PLBB Reply of patent proprietor to notice(s) of opposition received

Free format text: ORIGINAL CODE: EPIDOSNOBS3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: TR

Payment date: 20061225

Year of fee payment: 7

BERE Be: lapsed

Owner name: *SULZER METCO A.G.

Effective date: 20050131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041006

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

27A Patent maintained in amended form

Effective date: 20081217

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

REG Reference to a national code

Ref country code: CH

Ref legal event code: AEN

Free format text: AUFRECHTERHALTUNG DES PATENTES IN GEAENDERTER FORM

REG Reference to a national code

Ref country code: SE

Ref legal event code: RPEO

REG Reference to a national code

Ref country code: ES

Ref legal event code: DC2A

Date of ref document: 20090313

Kind code of ref document: T5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100923

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20080104

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: INTELLECTUAL PROPERTY SERVICES GMBH, CH

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 20150213

Year of fee payment: 15

Ref country code: IT

Payment date: 20150129

Year of fee payment: 15

Ref country code: ES

Payment date: 20150212

Year of fee payment: 15

Ref country code: DE

Payment date: 20150203

Year of fee payment: 15

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20150209

Year of fee payment: 15

Ref country code: FR

Payment date: 20150130

Year of fee payment: 15

Ref country code: SE

Payment date: 20150129

Year of fee payment: 15

Ref country code: GB

Payment date: 20150204

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50102175

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 266104

Country of ref document: AT

Kind code of ref document: T

Effective date: 20160104

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20160104

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160930

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160104

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160802

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160131

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160131

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160201

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160104

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160105

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160104

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20170228

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160105