US20020005182A1 - Fixing sleeve for a spark plug - Google Patents

Fixing sleeve for a spark plug Download PDF

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Publication number
US20020005182A1
US20020005182A1 US09/780,286 US78028601A US2002005182A1 US 20020005182 A1 US20020005182 A1 US 20020005182A1 US 78028601 A US78028601 A US 78028601A US 2002005182 A1 US2002005182 A1 US 2002005182A1
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US
United States
Prior art keywords
fixing sleeve
spark plug
coolant passages
sleeve according
front region
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.)
Abandoned
Application number
US09/780,286
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English (en)
Inventor
Markus Kraus
Franz Pockstaller
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.)
Innio Jenbacher GmbH and Co OG
Original Assignee
Jenbacher 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
Application filed by Jenbacher AG filed Critical Jenbacher AG
Assigned to AKTIENGESELLSCHAFT, JENBACHER reassignment AKTIENGESELLSCHAFT, JENBACHER ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: POCKSTALLER, FRANZ, KRAUS, MARKUS
Publication of US20020005182A1 publication Critical patent/US20020005182A1/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/12—Arrangements for cooling other engine or machine parts
    • F01P3/16—Arrangements for cooling other engine or machine parts for cooling fuel injectors or sparking-plugs

Definitions

  • the present invention concerns a fixing sleeve for a spark plug comprising coolant passages which are arranged in the wall of the fixing sleeve and which are oriented substantially in the longitudinal direction of the spark plug.
  • the function of a fixing sleeve of the kind is to anchor a spark plug securely and firmly in the cylinder head.
  • the fixing sleeve has an enlargement which faces in the direction of the through passage of the fixing sleeve and in which a screwthread is provided.
  • the spark plug is screwed into that screwthread.
  • the fixing sleeve must also carry away the heat which is produced when ignition occurs.
  • the wall of the fixing sleeve has usually been provided with coolant passages which extend straight. It was possible for those straight coolant passages to be easily produced by means of drilling.
  • U.S. Pat. No. 3,765,384 shows an embodiment of fixing sleeve in which, in the region of the screwthread into which the spark plug is screwed, the coolant passages are widened towards the screwthread. That configuration thus takes the coolant closer to the spark plug, for the purposes of better cooling.
  • the object of the present invention is to provide a fixing sleeve which ensures a longer service life for the spark plugs, by virtue of a further improvement in the dissipation of heat.
  • the fixing sleeve comprises a metallic material whose thermal conductivity is over 60 W/m° C., preferably over 80 W/m° C.
  • Particularly suitable materials are brass or nickel and alloys formed therewith.
  • a preferred embodiment provides that the coolant passages are brought closer to the spark plug in the front region of the fixing sleeve, which preferably has a screwthread for screwing in the spark plug.
  • the coolant passages are thus moved closer to the location at which the greatest generation of heat occurs and can accordingly more efficiently carry the heat away.
  • the weakening in the front region can be avoided by the configuration of the coolant passages in the front region of the fixing sleeve being adapted to the contour of the spark plug. It will be appreciated however that adaptation to the contour of the spark plug increases the manufacturing cost for producing the coolant passages.
  • Optimum cooling results are achieved if the remaining wall thickness in the front region of the fixing sleeve between the spark plug and coolant passages is partly below 5 mm, preferably being about between 2 and 3 mm.
  • FIG. 1 shows a fixing sleeve in accordance with the state of the art
  • FIG. 2 is a view in longitudinal section of a first alternative embodiment of a fixing sleeve according to the invention
  • FIG. 3 is a view in cross-section taken along line A-A in FIG. 2,
  • FIG. 4 is a view in cross-section taken along line B-B in FIG. 2,
  • FIG. 5 is a view in longitudinal section of a second alternative embodiment of a fixing sleeve according to the invention.
  • FIG. 7 is a view in cross-section taken along line D-D in FIG. 5.
  • the fixing sleeve 2 serves to anchor a spark plug 1 in the cylinder head 9 .
  • the fixing sleeve 2 is disposed between the inlet and exhaust valves 8 .
  • the fixing sleeve 2 is reinforced in its front region 2 a .
  • region 2 a Provided in that region 2 a is a screwthread 5 into which the spark plug 1 is screwed.
  • the fixing sleeve 2 is provided with coolant passages 3 for cooling the spark plug 1 .
  • the coolant passages 3 extend through the wall of the fixing sleeve 2 .
  • those coolant passages 3 are in the form of straight cylindrical bores. They lead from a manifold 10 straight to the annular passage 7 which surrounds the antechamber 6 arranged in front of the spark plug 1 on the fixing sleeve 2 .
  • the coolant passages 3 are provided with enlargements 4 in the front region 2 a of the fixing sleeve 2 .
  • the coolant therefore goes closer to the location at which the greatest amount of heat is generated in the front region of the spark plug 1 .
  • the fixing sleeve 2 can be made from brass, a brass alloy, nickel, a nickel alloy or also another metallic material if its thermal conductivity is over 60 W/m° C., preferably over 80 W/m° C. At the same time it must enjoy sufficient strength for securely anchoring the spark plug 1 .
  • the thermal conductivity of brass and nickel is approximately three times as high as the high-alloyed steel which has been used hitherto, whereas the strength values are only slightly worse. Better machinability is a further factor in favour of brass and nickel.
  • FIGS. 3 and 4 It will be apparent from FIGS. 3 and 4 that disposed in the wall of the fixing sleeve 2 is a plurality of coolant passages 3 which surround the spark plug 1 .
  • the only exception is that region in which the gas injection conduit 11 and the gas injection valve are arranged.
  • the antechamber 6 is supplied with ignition fluid by way of the gas injection conduit 11 and the gas injection valve.
  • the antechamber 6 which can be brazed to the fixing sleeve 2 (FIG. 2) or screwed thereto (FIG. 5) comprises a nickel-chromium alloy with about a 30% proportion of chromium. That alloy makes the antechamber 6 particularly heat-resistant.
  • FIG. 5 differs from FIG. 2 in that the enlargements 4 are in the form of additional bores. Those additional bores are particularly easy to implement from the production process point of view. Once again the remaining wall thickness is greatly reduced. The enlargements 4 approach the spark plug 1 to a spacing of between about 2 and 3 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Spark Plugs (AREA)
US09/780,286 2000-02-22 2001-02-09 Fixing sleeve for a spark plug Abandoned US20020005182A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT2652000 2000-02-22
ATA265/2000 2000-02-22

Publications (1)

Publication Number Publication Date
US20020005182A1 true US20020005182A1 (en) 2002-01-17

Family

ID=3670402

Family Applications (2)

Application Number Title Priority Date Filing Date
US09/780,286 Abandoned US20020005182A1 (en) 2000-02-22 2001-02-09 Fixing sleeve for a spark plug
US09/790,736 Abandoned US20010015601A1 (en) 2000-02-22 2001-02-22 Fixing sleeve for a spark plug

Family Applications After (1)

Application Number Title Priority Date Filing Date
US09/790,736 Abandoned US20010015601A1 (en) 2000-02-22 2001-02-22 Fixing sleeve for a spark plug

Country Status (2)

Country Link
US (2) US20020005182A1 (de)
EP (1) EP1128034A3 (de)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070183979A1 (en) * 2003-08-06 2007-08-09 Elisabeth Arkenau-Maric Abuse-proofed dosage form
US20110271930A1 (en) * 2008-12-26 2011-11-10 Mitsubishi Heavy Industries, Ltd. Gas engine with spark plug and bore-cooling holes
US20120180744A1 (en) * 2009-10-07 2012-07-19 Friedrich Gruber Internal combustion engine ignition device
US20140225497A1 (en) * 2011-07-12 2014-08-14 Pascal Woerner Prechamber module for a laser spark plug and method for producing same
EP2372135A4 (de) * 2008-12-26 2015-10-14 Mitsubishi Heavy Ind Ltd Gasmotor
US9217360B2 (en) 2011-12-01 2015-12-22 Cummins Intellectual Property, Inc. Prechamber device for internal combustion engine
EP3521585A1 (de) * 2018-02-01 2019-08-07 Innio Jenbacher GmbH & Co OG Vorkammervorrichtung für verbrennungsmotor
WO2025021311A1 (en) * 2023-07-21 2025-01-30 Caterpillar Energy Solutions Gmbh Water cooled spark plug and spark plug sleeve

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9382887B2 (en) 2009-09-23 2016-07-05 Cummins Intellectual Property. Inc. Engine component seal assembly and method of sealing a coolant passage from an engine component
US8813716B2 (en) * 2011-06-22 2014-08-26 Caterpillar Motoren Gmbh & Co. Kg Pre-combustion chamber tip
AT514560B1 (de) 2013-09-25 2015-02-15 Ge Jenbacher Gmbh & Co Og Zylinderkopf
US10605213B2 (en) * 2015-08-21 2020-03-31 Cummins Inc. Nozzle combustion shield and sealing member with improved heat transfer capabilities
US11585288B1 (en) * 2021-11-19 2023-02-21 Caterpillar Inc. Cylinder head assembly and axially located igniter sleeve for same
DE102022209290A1 (de) * 2022-09-07 2024-03-07 Robert Bosch Gesellschaft mit beschränkter Haftung Einspritzventil für Kraftstoffe, Zylinderkopf mit Einspritzventil, Verfahren zum Einbauen eines Einspritzventils in einen Zylinderkopf sowie Verwendung einer zylindrischen Aufnahme eines Zylinderkopfs als Außenhülle eines Einspritzventils

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3765384A (en) 1971-12-03 1973-10-16 J Barnard Cooling systems for internal combustion engines
US4074664A (en) * 1976-02-12 1978-02-21 Astron Innovations, Inc. Fuel control system for internal combustion engines
CH628399A5 (de) * 1978-05-26 1982-02-26 Sulzer Ag Anordnung zur kuehlung des zylinderdeckels eines viertakt-dieselmotors.
DE3913665A1 (de) * 1989-04-26 1990-10-31 Ruhrgas Ag Vorkammer-zuendeinrichtung
US5222993A (en) * 1992-09-28 1993-06-29 Gas Research Institute Ignition system for water-cooled gas engines
US5431140A (en) * 1993-10-18 1995-07-11 Valve Maintenance Corporation Clean burning pre-combustion chamber system and method for internal combustion engines
US5662082A (en) * 1995-12-05 1997-09-02 Compressor Engineering Corporation Pre-combustion chamber for internal combustion engine and method of manufacture thereof
US6016785A (en) * 1998-10-01 2000-01-25 Caterpillar Inc. Pre-combustion chamber assembly and method
US6019081A (en) * 1998-10-01 2000-02-01 Caterpillar Inc. Cooled pre-combustion chamber assembly

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8075872B2 (en) 2003-08-06 2011-12-13 Gruenenthal Gmbh Abuse-proofed dosage form
US20070183979A1 (en) * 2003-08-06 2007-08-09 Elisabeth Arkenau-Maric Abuse-proofed dosage form
US8420056B2 (en) 2003-08-06 2013-04-16 Grunenthal Gmbh Abuse-proofed dosage form
US8757127B2 (en) * 2008-12-26 2014-06-24 Mitsubishi Heavey Industries, Ltd. Gas engine with spark plug and bore-cooling holes
US20110271930A1 (en) * 2008-12-26 2011-11-10 Mitsubishi Heavy Industries, Ltd. Gas engine with spark plug and bore-cooling holes
EP2372135A4 (de) * 2008-12-26 2015-10-14 Mitsubishi Heavy Ind Ltd Gasmotor
US20120180744A1 (en) * 2009-10-07 2012-07-19 Friedrich Gruber Internal combustion engine ignition device
US8365689B2 (en) * 2009-10-07 2013-02-05 Ge Jenbacher Gmbh & Co. Ohg Internal combustion engine ignition device
US20140225497A1 (en) * 2011-07-12 2014-08-14 Pascal Woerner Prechamber module for a laser spark plug and method for producing same
US9217360B2 (en) 2011-12-01 2015-12-22 Cummins Intellectual Property, Inc. Prechamber device for internal combustion engine
US9441528B2 (en) 2011-12-01 2016-09-13 Cummins Intellectual Property, Inc. Prechamber device for internal combustion engine
EP3521585A1 (de) * 2018-02-01 2019-08-07 Innio Jenbacher GmbH & Co OG Vorkammervorrichtung für verbrennungsmotor
CN110107392A (zh) * 2018-02-01 2019-08-09 Ge延巴赫两合无限公司 用于燃烧发动机的预燃室装置
US11035288B2 (en) 2018-02-01 2021-06-15 Innio Jenbacher Gmbh & Co Og Prechamber device for combustion engine
WO2025021311A1 (en) * 2023-07-21 2025-01-30 Caterpillar Energy Solutions Gmbh Water cooled spark plug and spark plug sleeve

Also Published As

Publication number Publication date
EP1128034A3 (de) 2003-01-29
EP1128034A2 (de) 2001-08-29
US20010015601A1 (en) 2001-08-23

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Legal Events

Date Code Title Description
AS Assignment

Owner name: AKTIENGESELLSCHAFT, JENBACHER, AUSTRIA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:KRAUS, MARKUS;POCKSTALLER, FRANZ;REEL/FRAME:011550/0677;SIGNING DATES FROM 20001205 TO 20001208

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE