EP2565416A1 - Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne - Google Patents

Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne Download PDF

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Publication number
EP2565416A1
EP2565416A1 EP11007079A EP11007079A EP2565416A1 EP 2565416 A1 EP2565416 A1 EP 2565416A1 EP 11007079 A EP11007079 A EP 11007079A EP 11007079 A EP11007079 A EP 11007079A EP 2565416 A1 EP2565416 A1 EP 2565416A1
Authority
EP
European Patent Office
Prior art keywords
cleaning
powder
liquid
jet
cavity
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Withdrawn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
EP11007079A
Other languages
German (de)
English (en)
Inventor
Friedrich Sprügel
Alfons Urban
Iris Dr. Kieltsch
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.)
Tunap GmbH and Co KG
Original Assignee
Tunap Industrie Chemie GmbH and Co Produktions KG
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 Tunap Industrie Chemie GmbH and Co Produktions KG filed Critical Tunap Industrie Chemie GmbH and Co Produktions KG
Priority to EP11007079A priority Critical patent/EP2565416A1/fr
Priority to PCT/EP2012/066914 priority patent/WO2013030306A1/fr
Priority to PL12751530T priority patent/PL2751409T3/pl
Priority to DK12751530.2T priority patent/DK2751409T3/en
Priority to EP12751530.2A priority patent/EP2751409B1/fr
Priority to ES12751530.2T priority patent/ES2617481T3/es
Publication of EP2565416A1 publication Critical patent/EP2565416A1/fr
Withdrawn legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00—Cleaning hollow articles by methods or apparatus specially adapted thereto 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/04—Cleaning of, preventing corrosion or erosion in, or preventing unwanted deposits in, combustion engines

Definitions

  • the present invention relates to a method and a device for cleaning coked cavities, in particular of valves in intake passages of an internal combustion engine.
  • impurities In internal combustion engines, such as gasoline and diesel engines impurities often occur in the intake ports and on the intake valves, which are caused in particular by fuels of poor quality and / or unfavorable operation of the engines.
  • the impurities are mainly hard and soft as well as greasy carbon deposits, which interfere with engine growth more and more with increasing growth, because when opening the intake valves the required inlet cross sections are not reached anymore.
  • the invention has for its object to provide a method and apparatus for cleaning coked cavities, in particular of valves in intake ports of an internal combustion engine or the simple handling easy removal of heavy impurities and deposits substantially without abrasion of the valve surface or the Inlet channel wall allows.
  • the invention thus provides that a water-soluble cleaning powder jet is introduced by means of a compressed gas into a cavity to be cleaned, and that at the same time an aqueous liquid is introduced into the cavity to be cleaned, so that by dissolving the cleaning powder in the aqueous liquid, a cleaning liquid is formed in the cavity to be cleaned, and that the cleaning liquid and the introduced gas is sucked with the dirt particles dispersed therein from the cavity.
  • water-soluble cleaning powder By introducing water-soluble cleaning powder by means of an air flow into the cavity to be cleaned, it is possible to use the abrasive effect of the powder grains to dissolve contaminants from the walls of the cavity to be cleaned.
  • a preferably alkaline cleaning liquid is formed which dissolves both dirt particles removed from the walls and dirt particles still present on the walls, or at least disperses them so that the dirt can be removed 100% during subsequent suction.
  • the mechanical cleaning effect can be achieved by introducing the cleaning powder with compressed air into the cavity to be cleaned as a powder jet.
  • a compressed air powder jet can be produced, which has a good abrasive effect on the contaminants on the walls of the cavity to be cleaned, due to the water solubility and the low hardness of the cleaning powder, the metal surface of the valves and the inlet channels is treated gently, ie essentially no or only a small removal of the valve material takes place.
  • the cleaning powder is composed of syrupy to dendritic bodies with a hydrophobized surface.
  • the cleaning powder by means of SiO2 or by microencapsulation z.
  • B hydrophobic by means of organo-functional silanes. This ensures that the cleaning powder particles do not stick together, so that the cleaning powder remains flowable and thus transportable by means of an air flow.
  • a cleaning powder having a particle size of 40 to 400 .mu.m, in particular from 40 to 200 .mu.m and preferably from 50 to 150 microns is used.
  • the cleaning powder contains a solid base such as sodium or potassium hydroxide, carbonates or bicarbonates.
  • a solid base such as sodium or potassium hydroxide, carbonates or bicarbonates.
  • Mono-, di- or tricarboxylic acids, in particular, malic, citric or gluconic acids, can be used as solid acid.
  • the cleaning powder contains, in addition to or instead of a solid alkali or acid, inorganic salts such as metal halides, phosphates, sulfonates, silicates or borates.
  • inorganic salts such as metal halides, phosphates, sulfonates, silicates or borates.
  • the cleaning powder contains organic pigments such as microencapsulated alcoholates, acetates, azoles, imidazoles or piperazine.
  • the cleaning liquid is expediently adapted to the respectively used cleaning powder, the particle size and the microencapsulation.
  • a solid alkali such as sodium carbonate
  • an acidic aqueous solution is used, in the case of an acid an alkaline solution.
  • the cleaning liquid may further contain an organic solvent for dissolving the microencapsulation, preferably an alcohol.
  • non-foaming, hydrotropic surfactants may be added to the cleaning fluid in order to optimally disperse and remove the dirt particles.
  • the cleaning liquid adapted to the respective cleaning powder ensures that no solid particles remain in the inlet channels, which can lead to engine damage as a result of compression losses caused by scoring on the piston or cylinder wall.
  • the amounts of cleaning powder and aqueous liquid are coordinated so that the cleaning powder is completely dissolved in the aqueous liquid and dirt components are completely dispersed.
  • the pressure gas provided for introducing the cleaning powder as a powder jet has a pressure of 0.5 bar to 3 bar.
  • an apparatus for carrying out the inventive cleaning method described above comprising a cleaning jet probe having a first channel for introducing the water-soluble cleaning powder as a powder jet into the cavity to be cleaned by means of the compressed gas and a second channel for introducing the aqueous liquid into the cavity Has cavity.
  • the device according to the invention further comprises a suction device for sucking off the cleaning liquid and the introduced gas with the dirt constituents contained therein from the cavity.
  • outlet openings of the first and the second channel are arranged adjacent to one another and configured such that a leaking liquid jet and the exiting powder jet do not come into contact with each other.
  • the first channel of the cleaning jet probe can be connected to a compressed gas source via a suction lifter for the cleaning powder, while the second channel can be connected to a liquid source, wherein the suction port of the suction lifter for the cleaning powder a cleaning powder container is used.
  • the apparatus for carrying out the method according to the invention further comprises an adapter device with at least one connection element, which has an input-side opening of a Seals inlet channel of a cavity to be cleaned and having an access channel to the inlet channel, and a burnsstrahlsondenhaltevoriques has, which is tightly connected to a connection element so that the cleaning jet probe is sealed in the inlet channel is inserted, and having a suction port, which with the suction device is connectable to suck the cleaning fluid and the introduced gas with the contaminants contained therein from the inlet channel through the access channel.
  • the cleaning jet probe holding device for the sealed introduction of the cleaning jet probe into an inlet channel prefferably has a rubber bellows which is in close contact with the cleaning jet probe at its one end and with the cleaning probe holding device at its other end.
  • the cleaning method according to the invention uses the energy of the compressed air powder jet, which leads to the separation of dirt on the wall on impact with the powder particles, together with the solution enthalpy to produce a highly effective cleaning liquid, in particular an alkali in which not only the cleaning powder is completely dissolved and thus kept liquid but also the dirt-dispersing action and the dirt-carrying capacity of the cleaning agent, so the highly effective cleaning liquid is used to remove the dirt components completely from the cavity to be cleaned.
  • FIG. 1 is an example of a cavity to be cleaned, namely an intake passage 10 in a cylinder head 12 of an internal combustion engine, such as a diesel engine 14, which is mounted on a corresponding cylinder block 16 in a conventional manner.
  • a in an unspecified cylinder opening in the cylinder block 16 outlet port 18 of the intake passage 10 is closed in a conventional manner by an inlet valve 20 which is guided by a corresponding valve guide 22 in the cylinder head 12 to release according to the engine control, the opening 18 of the intake port 10 and close.
  • the intake ports 10 and the intake valves 20 of diesel engines very heavily coke, as shown schematically in FIG. 2 indicated. Particularly affected are so-called swirl ducts (not shown in detail), which are used in modern diesel engines with four valves per cylinder to impart a twist to the gas mixture to be supplied to the cylinder, resulting in improved mixing of air and injected Fuel should lead.
  • swirl ducts not shown in detail
  • the surface of the neck and the conical end portion of the inlet valve 20 are contaminated.
  • the deposits in the inlet channels 10 and the inlet valves 20 are, in particular, soft, greasy carbon deposits.
  • the cleaning of the inlet channels 10 and the inlet valves 20 is carried out by exposing the inlet-side openings 24 of the inlet channels 10 in the cylinder head 12 into the inlet channel 10 a pulverized detergent together with an aqueous liquid under pressure, so that by dissolving of the cleaning powder in the aqueous liquid forms a cleaning liquid in the cavity to be cleaned, the cleaning effect of which is optionally enhanced by the heating due to the heat of dissolution when the cleaning powder is dissolved.
  • FIG. 2 shows in a simplified schematic sectional view of an inventive device 26 for cleaning cavities, in particular the walls of the inlet channel 10 and / or the surface of the inlet valve 20, as it is attached to the side of the inlet-side opening 24 of the inlet channel 10 on the cylinder head 12.
  • the device 26 comprises a cleaning jet probe 28 (which in FIG. 2 only partially shown and below with reference to FIG. 3 will be described in detail later), a suction device 30, an adapter device 32 and a cleaning jet probe holding device 34.
  • the adapter device 32 is releasably secured to the cylinder head 12 and seals the inlet-side opening 24 of the inlet channel 10 so that an access channel 36 for carrying out the cleaning jet probe 28 remains in the inlet channel 10.
  • the cleaning jet probe holding device 34 may be integrally or fixedly connected to the adapter device 32, but it is also possible to provide a detachable connection such as a plug connection between the cleaning jet probe holding device 34 and the adapter device 32 (as described in more detail below with reference to FIGS Figures 5 and 6 will be explained).
  • a rubber bellows 38 is provided, which is in close contact with the cleaning jet probe 28 at its one end and with the cleaning jet probe holding device 34 at its other end.
  • the cleaning jet probe holding device 34 has a suction connection 40, through which cleaning liquid and introduced gas with dirt components dispersed therein can be sucked out of the cavity through the suction device 30.
  • the cleaning jet probe 28 has a first channel 42 for introducing a water-soluble cleaning powder 44 as a powder jet into the cavity to be cleaned by means of a compressed gas and a second channel 46 for introducing aqueous liquid 48 into the cavity to be cleaned.
  • the powder jet of the cleaning powder 44 is directed to the corresponding contaminants, wherein the impact of the cleaning powder 44 on the contaminants 50 similar to a sandblasting method an abrasive removal of the contaminants 50 takes place. Due to the additionally introduced aqueous liquid 48 comes after hitting the surface to be cleaned to a mixing of the cleaning powder 44 with the aqueous liquid 48, thereby additionally still a chemical cleaning due to the resulting by dissolving the cleaning powder 44 in the aqueous liquid 48 cleaning liquid he follows. A detailed description of the cleaning process will be given later.
  • FIG. 3 a simplified schematic representation of the cleaning jet probe 28 is shown, which is connected via a liquid line 52 to a liquid source 54 and via a gas pressure line 56 to a compressed gas source 58.
  • the cleaning jet probe 28 has a liquid jet tube 60 with the second channel 46 and a powder jet tube 62 with the first channel 42, through which the aqueous liquid 48 and the cleaning powder 44 in a cleaning operation under pressure on the contaminants 50 (FIG. FIG. 2 ) are steered.
  • the liquid jet pipe 60 and the powder jet pipe 62 are in FIG. 3 shown as straight tubes.
  • the powder jet tube 62 with the first channel 42 and the liquid jet tube 62 with the second channel 46 can be bent so that it optimally matches the geometry of the inlet channel 10 are.
  • the curvature of the powder jet tube 62 with the first channel 42 should not be too great to avoid abrasion of the inner wall of the first channel 42 by the cleaning powder 44 guided in the first channel 42, or at least minimizing damage to the tube 62 to avoid.
  • the powder jet tube 62 has a diameter of 2 to 10 mm, preferably 4 to 8 mm and in particular 6 mm and is made of a durable material such as hardened steel.
  • a pressurized gas preferably compressed air is used. Since the cleaning process is usually carried out in motor vehicle workshops, as a compressed gas source 58, a conventional compressed air source such as a compressor can be used. However, it is important that dried air is used to prevent clumping of the cleaning powder 44. Accordingly, when using a non-dried air pressure source additionally a drying device (not shown) can be interposed.
  • the pressure of the compressed gas used is in a range of 0.5 bar to 3 bar.
  • the cleaning powder 44 is mounted in a cleaning powder container 64 and is sucked through a suction port 66 of the siphon 68 according to the Venturi principle in the compressed gas stream inside the powder jet tube 62 and blown out together with the compressed gas stream as cleaning powder jet from a first outlet opening 70 in the direction of the dirt 50 to be cleaned.
  • the cleaning powder container 64 has a capacity of 250 mm to 500 mm.
  • the compressed gas source 58 is preferably designed to deliver compressed gas at a pressure of up to 10 bar. In a cleaning operation, the compressed gas consumption at an operating pressure of 2 to 3 bar is about 170 1 / min.
  • the siphon 68 By the siphon 68, a pressure of 0.09 to 0.3 bar is generated in a cleaning operation within the cleaning powder container 64, the cleaning powder container 64 is thus under negative pressure.
  • a flexible hose can be used, which is designed for the gas pressure used.
  • the liquid jet tube 60 is also preferably made of metal and is supplied via the liquid line 52 from the liquid source 54 with an aqueous liquid which is pressurized by a second outlet opening 72 as a liquid jet in the direction of the contaminants 50 (50) to be cleaned. FIG. 2 ) exit.
  • a pump can be used which can be connected to a liquid reservoir.
  • a liquid pressure cup can be used, which is pressurized by means of a compressed gas.
  • the diameter of the liquid jet tube 60 is 0.5 mm to 5 mm, preferably 0.7 mm to 2 mm and in particular 1 mm.
  • the pressure at which the aqueous liquid is forced through the liquid jet pipe 60 is 0.5 bar to 10 bar.
  • the liquid consumption is 300 ml to 1 1 / min.
  • the liquid consumption is matched to the cleaning powder consumption per unit time so that the cleaning powder 44 is completely dissolved in the aqueous liquid 48 after hitting a wall in the inlet channel 10 and dirt components 50 are completely dispersed.
  • the diameter of the first channel 42 of the powder jet tube 62 is greater than the diameter of the second channel 46 of the liquid jet tube 60 at the liquid and gas pressure used, the size ratio between 2: 1 and 10: 1, preferably is between 4: 1 to 8: 1 and in particular 6: 1.
  • the tube length from the cleaning powder container 64 to the outlet openings 70, 72 is 200 mm to 300 mm.
  • FIG. 4 shows a detailed view of the distal end of the cleaning jet probe 28 with the outlet openings 70 and 72 according to an embodiment of the invention.
  • the outlet openings 70, 72 and the distal ends of the liquid jet tube 60 and the powder jet tube 62 may be configured such that the liquid jet and the powder jet divergent from the outlet openings 70 , 72 emerge and run each other.
  • the tubes 60, 62 may be divergently curved at their ends, but it is also possible to provide at the outlet opening 72 of the liquid jet tube 60 a nozzle (not shown) which produces a jet of liquid which does not contact the powder jet.
  • the outlet openings 70, 72 may also be designed such that the powder jet and the liquid jet converge towards each other and at a predetermined distance to the outlet openings 70, 72, which corresponds to a point of an object to be cleaned at a usual working distance, coincide.
  • the tubes 60, 62 may simply be parallel at their distal end, with little mixing of the powder jet and the liquid jet being accepted.
  • the inner wall of the powder jet tube 62 may be coated with a ceramic either entirely or only in the area of the outlet opening 70.
  • FIG. 5 a simplified schematic view of the adapter device 32 and the cleaning jet probe holding device 34 is shown on the cylinder head 12.
  • the adapter device 32 has four connection elements 74 which seal respective inlet-side openings 24 of the four inlet channels 10 of the cavity to be cleaned with the inlet valves 20 (not shown) and have a respective access channel 36 to the respective inlet channel 10.
  • the adapter device 32 is in this case detachably connected to the cylinder head 12, as indicated schematically by the screws 76.
  • the adapter device has fastening holes at the locations at which a screw connection of the cylinder head 12 with a valve cover (not shown) takes place.
  • the fastening device used therefor such as a screw / nut connection for releasably securing the adapter device 32 to the cylinder head 12 can also be used.
  • a screw / nut connection for releasably securing the adapter device 32 to the cylinder head 12
  • other releasable connection types are conceivable, such as a magnetic connection or a plug connection with the aid of the inlet channels 10.
  • the adapter device 32 is provided only for an intake passage 10 and formed integrally with the purge probe holding device 34, according to the invention, it is particularly advantageous if a plurality of connecting elements 74 corresponding to the number of intake ports 10 on one side of the cylinder head 12 is provided, wherein the connection elements 74 are adapted to provide a plug connection with the cartesstrahlsondenhaltevorraum 34.
  • the outer diameter of the hollow cylindrical connecting element 74 with the access channel 36 is matched to the inner diameter of the cleaning jet probe holding device 34, which is likewise designed as a hollow cylinder, so that a tight contact between a connecting element 74 and the cleaning jet probe holding device 34 inserted thereon is achieved.
  • a cleaning of the in FIG. 5 shown four inlet channels 10 and the inlet valves 20 (FIG. FIG. 2 ) respectively.
  • FIG. 6 a schematic sectional view of the adapter device 32 is shown with the ussstrahlsondenhaltevorraum 34.
  • the suction port 40 is provided on a peripheral side of the cleaning blast probe holding device 34 to allow suction of the cleaning liquid and the introduced gas with the debris contained therein from the inlet channel 10 through the access channel 36 by means of the suction device 30.
  • the arrangement of the suction port 40 is not on the in FIG. 6 shown limited arrangement. It is also possible that the cleaning jet probe 28 and a suction channel are arranged parallel to each other. In the FIG. 6 However, arrangement shown is preferred according to the invention, since so the cleaning jet probe 28, which is held by the rubber bellows 38, can be moved easily and with greater play in the comesstrahlsondenhaltevortechnik 34 and thus in the inlet channel 10.
  • the following is a method for cleaning coked cavities, in particular the inlet ducts 10 and the valves 20 of the internal combustion engine 14, as in FIG. 2 shown.
  • the adapter device 32 is first screwed onto the cylinder head 12.
  • the cleaning jet probe holding device 34 is attached to a corresponding connection element 74 together with the cleaning jet probe 28 and the cleaning jet probe 28 is inserted with its distal end into the inlet channel 10 until it encounters the soiled inlet valve 20.
  • the compressed air supply and the liquid supply is turned on, whereby the cleaning powder 44 emerges together with the aqueous liquid 48 at high speed from the outlet openings 70, 72 of the cleaning jet probe 60 and jet-shaped impurities 50 hits.
  • the combination of a cleaning powder jet 44 impinging on the contaminants 50 and the simultaneous supply of an aqueous liquid 48 results in both a mechanical and a chemical cleaning.
  • a water-soluble cleaning powder is provided according to the invention, which is dissolved after impinging on the contaminants 50 in the supplied aqueous liquid and forms a cleaning liquid together with the aqueous liquid, which then further a chemical cleaning the valves 20 and the inlet channel 10 causes.
  • the water-soluble cleaning powder 44 is composed of syrupy to dendritic bodies having a hydrophobicized surface.
  • the hydrophobing of the cleaning powder 44 can be effected by silanization, by means of SiO 2 or by microencapsulation. In particular, the hydrophobing of the cleaning powder 44 takes place by means of organo-functional silanes.
  • the cleaning powder has a particle size of 40 to 400 .mu.m, preferably from 40 to 250 .mu.m and in particular from 50 to 150 .mu.m.
  • the water-soluble cleaning powder 44 contains a solid base such as sodium hydroxide or potassium hydroxide, carbonates or bicarbonates.
  • a solid base such as sodium hydroxide or potassium hydroxide, carbonates or bicarbonates.
  • the cleaning powder 44 may contain other cleaning agents such as metal halides, phosphates, sulfonates, silicates or borates, and especially sodium carbonate, potassium carbonate, potassium or sodium bicarbonate, borax, potassium hydrogen phosphate or silicate.
  • the cleaning powder 44 instead of or in addition to the aforementioned cleaning agents, organic pigments such as microencapsulated alcoholates, acetates, imidazoles or piperazine.
  • the supplied aqueous liquid 48 is preferably an aqueous alkaline to slightly acidic solution.
  • the amount of liquid supplied is matched to the amount of powder supplied so that an optimal solution of the cleaning powder 44 in the aqueous liquid 48 and an optimal dispersion of the dirt components is ensured.
  • a solid liquor as cleaning powder 44
  • a solid acid such as mono-, di- or tricarboxylic acids, in particular, malic, citric or gluconic acid.
  • the aqueous liquid 48 is expediently adapted to the particular cleaning powder 44 used, its particle size and its microencapsulation.
  • a solid alkali such as sodium carbonate
  • an acidic aqueous solution is used, in the case of an acid an alkaline solution.
  • the aqueous liquid 48 may further contain an organic solvent for dissolving the microencapsulation, preferably an alcohol.
  • an organic solvent for dissolving the microencapsulation preferably an alcohol.
  • non-foaming, hydrotropic surfactants may be added to the aqueous liquid 48 in order to optimally disperse and remove the dirt particles.
  • the aqueous liquid 48 adapted to the respective cleaning powder 44 ensures that no solid particles remain in the inlet channels 10, which can lead to engine damage as a result of compression losses caused by scoring on the piston or cylinder wall.
  • a water-soluble cleaning powder 44 is conducted to contamination sites 50 in accordance with a sandblasting principle, wherein a chemical cleaning takes place after the solution of the cleaning powder 44 in the aqueous liquid 48.
  • a suction device 30 is suitable for this example, a wet-dry vacuum cleaner or a wet vacuum, as they are standard in motor vehicle workshops.
  • the compressed air supply can be switched off, so that only aqueous liquid 48 enters the inlet channel 10 in order to carry out a rinsing process.
  • the supply of cleaning powder 44 is stopped, with only aqueous liquid 48 and compressed air entering the input channel 10.
  • only a supply of compressed air without cleaning powder 44 into the inlet channel 10 can take place in order to dry the inlet channel 10 together with the inlet valve 20.
  • the cleaning jet probe holding device 34 After cleaning the first inlet channel 10, the cleaning jet probe holding device 34 is withdrawn from the connection element 74, the nub wave rotated until the inlet valve 20 of another inlet channel 10 is completely closed, and the cleaning jet probe holder 34 is a corresponding corresponding Connection element 74 attached. Thereafter, the cleaning of the further inlet channel 10 and the inlet valve 20 takes place.
  • the adapter device 32 is removed again and the valve cover 12 is screwed onto the cylinder head 12.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP11007079A 2011-08-31 2011-08-31 Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne Withdrawn EP2565416A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
EP11007079A EP2565416A1 (fr) 2011-08-31 2011-08-31 Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne
PCT/EP2012/066914 WO2013030306A1 (fr) 2011-08-31 2012-08-30 Procédé et dispositif de nettoyage de cavités calaminées, en particulier de soupapes dans des canaux d'admission d'un moteur à combustion interne
PL12751530T PL2751409T3 (pl) 2011-08-31 2012-08-30 Sposób i urządzenie do oczyszczania wydrążonych przestrzeni zanieczyszczonych nagarem, zwłaszcza zaworów w kanałach dolotowych silnika spalinowego
DK12751530.2T DK2751409T3 (en) 2011-08-31 2012-08-30 Method and apparatus for cleaning coking voids, especially valves in inlet ducts of an internal combustion engine
EP12751530.2A EP2751409B1 (fr) 2011-08-31 2012-08-30 Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne
ES12751530.2T ES2617481T3 (es) 2011-08-31 2012-08-30 Procedimiento y dispositivo para la limpieza de cavidades cubiertas de carbonilla, en particular de válvulas en canales de admisión de un motor de combustión interna

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP11007079A EP2565416A1 (fr) 2011-08-31 2011-08-31 Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne

Publications (1)

Publication Number Publication Date
EP2565416A1 true EP2565416A1 (fr) 2013-03-06

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EP11007079A Withdrawn EP2565416A1 (fr) 2011-08-31 2011-08-31 Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne
EP12751530.2A Active EP2751409B1 (fr) 2011-08-31 2012-08-30 Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne

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EP12751530.2A Active EP2751409B1 (fr) 2011-08-31 2012-08-30 Procédé et dispositif de nettoyage d'espaces creux cokéfiés, notamment de soupapes dans des canaux d'entrée d'un moteur à combustion interne

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EP (2) EP2565416A1 (fr)
DK (1) DK2751409T3 (fr)
ES (1) ES2617481T3 (fr)
PL (1) PL2751409T3 (fr)
WO (1) WO2013030306A1 (fr)

Cited By (5)

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Publication number Priority date Publication date Assignee Title
CN103170919A (zh) * 2013-04-01 2013-06-26 中国北方发动机研究所(天津) 一种提高内燃机气缸盖进排气道表面光洁度的装置和方法
CN103758640A (zh) * 2014-01-27 2014-04-30 陈凤鸣 一种三元催化器免拆清洗方法
US20150083165A1 (en) * 2013-09-26 2015-03-26 General Electric Company Suspensions of inorganic cleaning agents
DE202017100159U1 (de) 2017-01-13 2017-01-27 Tunap Industrie Chemie Gmbh & Co. Produktions Kg Strahlsonde zum Einbringen eines körnigen Strahlguts in einen Hohlraum
EP3363591A1 (fr) * 2017-02-17 2018-08-22 TKR Spezialwerkzeuge GmbH Adaptateur universel

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CN107208009B (zh) 2015-01-30 2021-03-12 路博润公司 用于清洁汽油发动机燃料输送系统、进气系统和燃烧室的组合物

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EP1882837A2 (fr) * 2006-07-25 2008-01-30 GE Jenbacher GmbH & Co. OHG Dispositif destiné au nettoyage d'une chambre de combustion

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US2742738A (en) * 1953-02-24 1956-04-24 George L Hall Wet abrasive dispenser
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103170919A (zh) * 2013-04-01 2013-06-26 中国北方发动机研究所(天津) 一种提高内燃机气缸盖进排气道表面光洁度的装置和方法
CN103170919B (zh) * 2013-04-01 2016-06-22 中国北方发动机研究所(天津) 一种提高内燃机气缸盖进排气道表面光洁度的装置
US20150083165A1 (en) * 2013-09-26 2015-03-26 General Electric Company Suspensions of inorganic cleaning agents
CN103758640A (zh) * 2014-01-27 2014-04-30 陈凤鸣 一种三元催化器免拆清洗方法
DE202017100159U1 (de) 2017-01-13 2017-01-27 Tunap Industrie Chemie Gmbh & Co. Produktions Kg Strahlsonde zum Einbringen eines körnigen Strahlguts in einen Hohlraum
WO2018130540A1 (fr) 2017-01-13 2018-07-19 Tunap Gmbh & Co. Kg Sonde de projection conçue pour introduire une matière de grenaillage dans une cavité
CN110191782A (zh) * 2017-01-13 2019-08-30 统耐保有限两合公司 用于将颗粒状的喷射材料引入到空腔中的喷射探头
CN110191782B (zh) * 2017-01-13 2021-06-29 统耐保有限两合公司 用于将颗粒状的喷射材料引入到空腔中的喷射探头
EP3363591A1 (fr) * 2017-02-17 2018-08-22 TKR Spezialwerkzeuge GmbH Adaptateur universel
US10814456B2 (en) 2017-02-17 2020-10-27 Tkr Spezialwerkzeuge Gmbh Universal adapter

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EP2751409B1 (fr) 2016-11-30
EP2751409A1 (fr) 2014-07-09
DK2751409T3 (en) 2017-03-06
PL2751409T3 (pl) 2017-06-30
ES2617481T3 (es) 2017-06-19

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