EP2609310B1 - Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotors - Google Patents

Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotors Download PDF

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Publication number
EP2609310B1
EP2609310B1 EP11749097.9A EP11749097A EP2609310B1 EP 2609310 B1 EP2609310 B1 EP 2609310B1 EP 11749097 A EP11749097 A EP 11749097A EP 2609310 B1 EP2609310 B1 EP 2609310B1
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EP
European Patent Office
Prior art keywords
alkaline liquid
cavity
pump
probe
suction
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.)
Active
Application number
EP11749097.9A
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German (de)
English (en)
French (fr)
Other versions
EP2609310A1 (de
Inventor
Friedrich A. SPRÜGEL
Alfons Urban
Iris 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
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Publication date
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Publication of EP2609310A1 publication Critical patent/EP2609310A1/de
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/08—Cleaning involving contact with liquid the liquid having chemical or dissolving effect
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/17—Maintenance; Servicing

Definitions

  • the present invention relates to a method and a device for cleaning coked cavities, in particular intake passages and valves 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 low-quality fuels 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 intake ports of an internal combustion engine, which allows easy handling and effective removal of impurities and deposits even in hard to reach places.
  • the method for cleaning cavities comprises the following steps: introducing an alkaline liquid into a cavity to be cleaned, heating the alkaline liquid, and Aspirating the alkaline liquid with the contaminants contained therein from the cavity, wherein the alkaline liquid in particular has a pH of 7 to 14.
  • a liquor in solid form and a solvent are mixed together and introduced into the cavity to be cleaned, so that the alkaline liquid is formed in the cavity to be cleaned by dissolving the liquor in the solvent with evolution of heat.
  • the cleaning effect of the alkaline liquid is significantly increased by the exothermic reaction, since the resulting heat can be used almost completely for heating the alkaline liquid and the impurities to be removed.
  • the dissolved dirt particles are extracted by means of a pump.
  • the alkaline liquid is heated prior to introduction, and the heated alkaline liquid is injected into the cavity, wherein the alkaline liquid is sucked with the dirt constituents contained therein from the cavity, while still alkaline liquid in the cavity is injected so that the cavity is continuously rinsed with alkaline liquid.
  • the alkaline liquid with the dirt constituents contained therein is sucked out of the cavity and then filtered to remove the dirt constituents contained therein, and the filtered alkaline liquid is subsequently heated and injected back into the cavity , As a result, the consumption of cleaning fluid can be kept low without compromising the effectiveness of the cleaning process.
  • the alkaline liquid is injected under pressure against the walls and the bottom of the cavity.
  • the device for cleaning cavities comprises a first probe which at its front end is provided with one or more nozzles for injecting a heated alkaline liquid into a cavity to be cleaned and which is connected at its other end to the pressure side of a pump, the suction side of heated alkaline liquid can be supplied, and a second probe for sucking the alkaline liquid with the dirt constituents contained therein from the cavity.
  • the alkaline liquid can be effectively bring even in hard to reach areas of cavities, where they can then fully develop their cleaning effect.
  • the second probe is connected to the suction side of the pump via a filter for removing contaminants from the alkaline liquid.
  • the two probes thus form with the pump and the filter an open system, which is closed over the cavity to be cleaned to a circuit for the alkaline liquid.
  • the outlet side of the filter is connected to the suction side of the pump via a connecting line to which a heater for heating a liquid flowing through is arranged.
  • a heating of the alkaline liquid in the pressure side is possible.
  • the first probe is a closed at its front end thin tube, in the peripheral wall a plurality of radially directed nozzles are provided.
  • the nozzles can be arranged on a line parallel to the axis of the tube.
  • the first probe have at least two nozzles for injecting the alkaline liquid into the cavity to be cleaned, which inject the alkaline liquid in different directions.
  • the nozzles can be arranged on one or more helix (s) or on one or more circumferential circle (s).
  • At least one nozzle is provided in the region of the closed front end through which the alkaline liquid can be sprayed essentially in the axial direction of the tube of the probe.
  • FIG. 1 is an example of a cavity to be cleaned, namely an intake passage 10 in a cylinder head 11 of an internal combustion engine, such as a diesel engine 12, which is mounted in a conventional manner on a corresponding cylinder block 13.
  • a in an unspecified cylinder opening in the cylinder block 13 outlet opening 14 of the intake passage 10 is conventionally closed by an intake valve 15 which is guided by a corresponding valve guide 16 in the cylinder head 11 to release and close the opening 14 of the intake passage in accordance with engine control.
  • the intake ports 10 and the intake valves 15 of diesel engines coke very much. Particularly affected are so-called swirl channels (not shown in detail), which are used in modern diesel engines with four valves per cylinder to impart a twist to the cylinder to be supplied gas mixture, which should lead to improved mixing of air and injected fuel.
  • the deposits in the inlet channels 10 and the inlet valves 15 are in particular soft, greasy carbon deposits.
  • the cleaning of the inlet channels 10 and the inlet valves 15 is carried out by exposing the inlet-side openings 17 of the inlet channels 10 in the cylinder head 11 in the inlet channel 10, an alkaline liquid is either previously heated or in the Essentially heated after insertion.
  • an alkaline liquid is either previously heated or in the Essentially heated after insertion.
  • the heat of solution is utilized when dissolving a lye in a corresponding solvent.
  • the liquor for example potassium hydroxide or sodium hydroxide
  • a solvent as indicated by the arrow F
  • the solvent used may be any suitable solvent, such as water or alcohol.
  • particularly good cleaning results are achieved when hydrogen peroxide is used as the solvent.
  • the mixing ratio of lye (in solid form) and solvent is chosen so that the resulting alkaline liquid has a pH of 7 to 14, in particular more than 12.
  • the described embodiment can be slightly modified by the fact that the mixing of liquor in solid form and solvent not only takes place in the inlet channel 10, but before, with the filling of the liquor / solvent mixture in the inlet channel 10 immediately follows the blending, so that the dissolution of the liquor in the solvent takes place only when the mixture of liquor and solvent is already in the inlet duct 10.
  • a device 21 for cleaning cavities, in particular intake passages 10 of an internal combustion engine, for example a diesel engine 12, comprises a first probe 21 and a second probe 22.
  • the first probe 21 is provided at its front end with one or more nozzle (s). 23 for injecting an alkaline liquid into a cavity to be cleaned and connected at its other end to the pressure side 24 of a pump 25, the suction side 26 of a filter 27 via a connecting line 28, which is associated with a heater 29, heated alkaline liquid can be supplied ,
  • the second probe 22 is connected to an inlet side of the filter 27 so as to be connected to the suction side 26 of the pump 25 via the filter 27 serving to remove debris from the alkaline liquid and the connection pipe 28.
  • the sucked by the pump 25 via the connecting line 28 from the filter 27 liquid is heated by the connecting line 28 associated heater 29 to a desired temperature.
  • the heater may also be arranged in a manner not shown on the pressure side of the pump 25.
  • the first probe 21 is designed as a thin tube closed at its front end, in the circumferential wall of which a plurality of radially directed nozzles 23 are provided, as is particularly apparent in FIG FIG. 3 is shown.
  • the number and the diameter of the nozzles 23 are designed so that the individual jets emerging from the nozzles 23 are so strong that they can cause a mechanical detachment of the carbon deposits to be removed.
  • one or more additional nozzles 23 ' can be provided, through which the alkaline liquid, as indicated in the drawing, in the axial direction or at least with a substantial proportion can be injected in the axial direction.
  • the nozzles 23 may also be mounted on one or more helix (s) (SL in FIG FIG. 3 (d) ) or on one or more circumference circle (s) ( FIG. 3 (c) ) can be arranged.
  • the individual nozzles 23 may be circumferentially distributed uniformly or unevenly.
  • the second probe 22 is removed from the reservoir 30 and also inserted into the inlet channel 10, in order to remove the alkaline liquid contained therein together with the dirt components contained therein, ie mechanically and / or chemically detached dirt constituents from it.
  • the cleaning liquid is then cleaned in the filter 27 and fed through the connecting line 28 is heated by the heater 29 back to the desired temperature and then sprayed or sprayed by the pump 25 again under pressure into the inlet channel 10, wherein the individual liquid jets impinge on the walls of the inlet channel 10 itself and the surface of the inlet valve 15.
  • the inlet valves 15 of the inlet channels 10 to be cleaned are reliably closed.
  • the inlet channel 10 filled with a corresponding amount of alkaline cleaning liquid and the second probe 22 is converted from the reservoir 30 into the inlet channel 10
  • a rinsing circuit is constructed in which the continuously aspirated cleaner (alkaline cleaning liquid) after treatment in the filter 27 and a renewed heating by the heater 29 is continuously fed back to the inlet channel 10.
  • the continuous supply of the alkaline cleaning liquid under pressure by means of the first probe 21 provides, as mentioned above, the additional mechanical washing action.
  • the cleaning can be completed by rinsing with water or alcohol and then drying with compressed air.
  • the invention thus provides a simple and reliable cleaning method for cleaning cavities, particularly coked cavities, such as the intake ports of an internal combustion engine, such as a diesel engine, with which its life can be significantly extended in a timely manner in a cost effective manner.
  • inventive device for cleaning cavities in particular of intake ports 10 of an internal combustion engine, such as a diesel engine 12 includes, as the above with reference to FIG. 2 explained device, a first probe 21 and a second probe 22.
  • the first probe 21 which has one or more nozzles 23 as described above at its front end, with its other end via a heater 29 to the pressure side 24 of a first pump 25 connected, the suction side 26 is connected via a corresponding intake 31 with a reservoir 30 in conjunction.
  • the second probe 22, so the suction probe is connected via a filter 27 to the suction side 36 of a second pump 35, the pressure side 34 is connected via a return line 32 to the reservoir 30 in combination.
  • the cleaning device shown has two pumps, namely the first pump 25 serving as a pressure pump for injecting the alkaline fluid into the cavity to be cleaned, and the second pump 35 serving as a suction pump for aspirating alkaline fluid and contaminants from the cavity Drain or the pressure side 34 of the second pump 35 delivers the extracted and filtered from the cavity liquid via the return line 32 back into the reservoir 30, from which then via the suction line 31 alkaline liquid of the inlet or suction side 26 of the first pump is supplied.
  • the liquid circuit is thus open in the region of the cavity to be cleaned and in the region of the reservoir 30.
  • an adapter plate 40 trained cover provided, which can be screwed in a manner not shown, for example by means of screws on the cylinder head 11.
  • the adapter plate 40 has two openings 41, through which the two probes 21, 22 can be passed substantially tight.
  • the through holes 41 may be provided with either the alkaline liquid resistant seals made of artificial or natural rubber or the like.
  • an overflow 42 is expediently provided, the outlet side of which can be connected to a collecting vessel (not shown).
  • the adapter plate 40 which in FIG. 6 is only shown to cover the opening of a single inlet channel 10, but can also be designed so that all lying in a line or in a plane valve inlet ducts are covered so that can be significantly reduced when cleaning the inlet ducts in the workshop of assembly work.
  • the liquid circuit Before actually cleaning an intake passage 10 and an intake valve 15 of an internal combustion engine with the aid of FIG. 4 1, the liquid circuit is initially short-circuited in that the first probe 21, that is to say the probe for injecting liquid into the cavity, is introduced into the storage container 30 instead of the return line 32. Now sucked from the reservoir 30 alkaline liquid through the heater 29, which is arranged downstream of the first pump 25, heated and conveyed back into the reservoir 30. This process can be repeated until the alkaline cleaning liquid in the reservoir 30 has reached a desired temperature.
  • the cycle is closed by means of the second probe 22 serving as a suction probe, the filter 27, the pump 35 and the return line 32.
  • the second probe 22 which extends through the corresponding opening 41 of the adapter plate 40, immersed in the cavity to be cleaned, while the return line 32 is guided into the reservoir 30.
  • the first pump 25 is turned on, so that alkaline cleaning liquid is injected into the inlet channel 11.
  • the second pump 35 is turned on to suck off liquid and dirt.
  • the delivery rate of the two pumps should be substantially the same in order to maintain a constant liquid level in the inlet channel 10 during cleaning.
  • the cleaning of the inlet channel 10 and the inlet valve 15 is carried out in the same manner as described above, only with the difference that the filtered through the filter 27 cleaning liquid is returned to the reservoir 30, before being returned from the pressure pump 25 via the heater 29 in the inlet channel is injected.
  • the use of two pumps, that is, a suction pump and a pressure pump for supplying cleaning fluid to the cavity to be cleaned has the advantage that the injection and suction of alkaline cleaning fluid can be controlled independently. Furthermore, not only the cleaning efficiency can be increased in this way, since the cleaning fluid is not consumed so quickly, but it can also improve the reliability in the workshop significantly although an open fluid circuit is used, since both the probes can be inserted tightly into the cavity to be cleaned by means of the adapter plate 40, and the suction and return lines are tightly inserted into the reservoir.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Cleaning By Liquid Or Steam (AREA)
EP11749097.9A 2010-08-24 2011-08-24 Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotors Active EP2609310B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010039696A DE102010039696A1 (de) 2010-08-24 2010-08-24 Verfahren und Vorrichtung zur Reinigung von verkokten Hohlräumen insbesondere von Einlasskanälen und Ventilen eines Verbrennungsmotors
PCT/EP2011/004251 WO2012025227A1 (de) 2010-08-24 2011-08-24 Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotors

Publications (2)

Publication Number Publication Date
EP2609310A1 EP2609310A1 (de) 2013-07-03
EP2609310B1 true EP2609310B1 (de) 2015-03-18

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EP11749097.9A Active EP2609310B1 (de) 2010-08-24 2011-08-24 Verfahren und vorrichtung zur reinigung von verkokten hohlräumen, insbesondere von einlasskanälen und ventilen eines verbrennungsmotors

Country Status (5)

Country Link
US (1) US20130220379A1 (zh)
EP (1) EP2609310B1 (zh)
CN (1) CN103339357A (zh)
DE (1) DE102010039696A1 (zh)
WO (1) WO2012025227A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108856079A (zh) * 2018-06-15 2018-11-23 中国电建集团山东电力建设第工程有限公司 一种快速清理烟冷器结垢的装置

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5106695B1 (ja) * 2012-04-02 2012-12-26 修 小川 ディーゼルエンジン用内部洗浄剤及びこれを用いた洗浄システム
JP6700289B2 (ja) 2015-01-30 2020-05-27 ザ ルブリゾル コーポレイションＴｈｅ Ｌｕｂｒｉｚｏｌ Ｃｏｒｐｏｒａｔｉｏｎ ガソリンエンジンの燃料送出システム、空気取り入れシステムおよび燃焼室を清浄化させるための組成物
CZ306082B6 (cs) * 2015-05-28 2016-07-27 Ladislav Šťastný Zařízení pro provádění způsobu a způsob čištění spalovacích motorů
DE202017100159U1 (de) 2017-01-13 2017-01-27 Tunap Industrie Chemie Gmbh & Co. Produktions Kg Strahlsonde zum Einbringen eines körnigen Strahlguts in einen Hohlraum
AT519615A1 (de) * 2017-01-31 2018-08-15 MAN TRUCK & BUS OESTERREICH GesmbH Gussteilkanal-Reinigungsvorrichtung und Verfahren zur Reinigung eines Gussteilkanals
CN107214152A (zh) * 2017-07-11 2017-09-29 徐州东方热电有限公司 一种燃气炉燃烧喷嘴清洗浸泡装置
DE102019105362A1 (de) 2019-03-04 2020-09-10 Tunap Gmbh & Co. Kg Reinigungsvorrichtung mit einer Reinigungsmedium Aufnahmekammer zum Aufnehmen eines Reinigungsmediums nach dem Passieren einer zu reinigenden Vorrichtung
CN112196711B (zh) * 2020-09-11 2022-03-25 上海中船三井造船柴油机有限公司 用于lgip主机燃气模块清洗的投油工具和方法
CN114151192A (zh) * 2021-12-16 2022-03-08 中国船舶重工集团公司第七一一研究所 清理装置
CN114951174B (zh) * 2022-04-18 2023-06-13 瑞力杰(北京)智能科技有限公司 火焰筒内积碳在线清洗方法

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US3095380A (en) * 1958-07-14 1963-06-25 Purex Corp Ltd Composition for removal of heat scale and carbon deposits
US5415190A (en) * 1994-03-02 1995-05-16 Ionescu; John Carbon monoxide cleaning apparatus
US6564814B2 (en) * 1997-05-23 2003-05-20 Shelba F. Bowsman Engine decarbonizing system
JP4881222B2 (ja) * 2007-05-17 2012-02-22 シェブロンジャパン株式会社 ガソリンエンジンの内面部品の洗浄方法
EP2138557A1 (en) * 2008-06-18 2009-12-30 Paul Hughett An upper internal combustion engine cleaning composition

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108856079A (zh) * 2018-06-15 2018-11-23 中国电建集团山东电力建设第工程有限公司 一种快速清理烟冷器结垢的装置

Also Published As

Publication number Publication date
EP2609310A1 (de) 2013-07-03
CN103339357A (zh) 2013-10-02
WO2012025227A1 (de) 2012-03-01
US20130220379A1 (en) 2013-08-29
DE102010039696A1 (de) 2012-03-01

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