EP0845167B1 - Zündkerze für eine brennkraftmaschine - Google Patents

Zündkerze für eine brennkraftmaschine Download PDF

Info

Publication number
EP0845167B1
EP0845167B1 EP97930294A EP97930294A EP0845167B1 EP 0845167 B1 EP0845167 B1 EP 0845167B1 EP 97930294 A EP97930294 A EP 97930294A EP 97930294 A EP97930294 A EP 97930294A EP 0845167 B1 EP0845167 B1 EP 0845167B1
Authority
EP
European Patent Office
Prior art keywords
insulator
electrode
spark plug
platinum
contact pin
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
EP97930294A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0845167A1 (de
Inventor
Roland Mueller
Richard Adamczuk
Werner Herden
Manfred Vogel
Walter Benedikt
Andreas Niegel
Hans-Dieter Herde
Rudolf Pollner
Dietrich Trachte
Bernd Mueller
Dittmar Klett
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0845167A1 publication Critical patent/EP0845167A1/de
Application granted granted Critical
Publication of EP0845167B1 publication Critical patent/EP0845167B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/20—Sparking plugs characterised by features of the electrodes or insulation
    • H01T13/39—Selection of materials for electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01T—SPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
    • H01T13/00—Sparking plugs
    • H01T13/40—Sparking plugs structurally combined with other devices

Definitions

  • the invention relates to a spark plug for Internal combustion engines such as those already described in DE-OS 44 31 143 is known.
  • a spark plug is proposed that shows little wear.
  • the known Spark plug is in a cylindrical metal tube, which is the Housing forms a rod-shaped inner conductor, which is surrounded by an insulator and a current limiting Has resistance in the circuit of the spark plug, the current limiting resistor is arranged so that it is in Direction to the spark gap of the spark plug up to Spark gap is preferred.
  • the Diameter of the inner conductor in this spark plug opposite conventional spark plugs reduced, reducing capacity the spark plug is reduced.
  • this spark plug according to DE-OS 44 31 143 is also the electrode head of the inner conductor covered with a layer of precious metal and a good provided heat-conducting material as an electrode head, the also serves as a heat buffer.
  • the spark plug with the features of the main claim has the advantage over the known that by Formation of the electrode in the form of a "nail head" more Wear volume is available. Furthermore, by reducing the diameter of the contact pin and Shortening of length as well as by the preferred Burning resistance achieved that lower mechanical Tensions caused by different Coefficient of thermal expansion can occur. Through the Ultimately, electrode burnout will be reduced Ceramic notches largely avoided. Another The advantage is the coating of the contact pin, which provides a high level of corrosion resistance. Ultimately, the single or double bend offers the Ground electrode and the protrusion of the ground electrode over the end face of the insulator also has the advantage that this formation of the electric field ceramic punctures can be prevented.
  • FIG. 1 shows a spark plug according to the invention in a schematic representation
  • Figure 2 the combustion chamber side End of the spark plug according to the invention with a different one Masselelektroden.
  • FIG. 1 shows schematically the inner part of a spark plug in part cut representation.
  • a metallic, tubular housing 10 is an insulator 11 arranged, the rotationally symmetrical axes of the Housing 10 and insulator 11 are congruent.
  • Insulator 11 is embedded in the center electrode 12, as well the individual components to be explained below Transmission of the voltage from the connecting bolt 13 to the Center electrode 12.
  • the connecting bolt 13 is inside the Insulator 11 connected to the erosion resistor 14.
  • the Burn-up resistor 14 is connected to contact pin 15, so that the voltage to the contact pin 15 Center electrode 12 is transmitted.
  • the center electrode 12 consists of platinum and has the shape of a Nail.
  • the contact pin 15 itself is with a Corrosion protection layer, for example with nickel or with coated with a nickel-silver alloy.
  • the Contact pin 15 compared to conventional spark plugs in his Significantly shortened length and reduced in diameter. By the shortening of the contact pin 15 is the Burning resistance extended and further towards Spark gap preferred, which has the advantages of how it have already been described in DE-OS 44 31 143.
  • the ground electrodes 16 are attached and for Center electrode bent. When presented in this Figure are the ground electrodes, here four Ground electrodes are provided, bent twice.
  • the most Ground electrode attached to housing is initially in Turned towards the center electrode and then back into the axial direction bent a second time so that the End face of the ground electrode in the axial direction of the Spark plug shows.
  • the end face of the ground electrode 16 is a predeterminable dimension over the end face of the insulator about.
  • the size of the protrusion corresponds approximately to the thickness a ground electrode.
  • the spark plug is essentially the same same design as indicated in Figure 1.
  • One and only The difference to Figure 1 is the employment of Ground electrodes.
  • the ground electrodes are only simply bent, creating the face of the Ground electrode shows in the radial direction of the spark plug. But here too the ground electrodes are about their thickness over the front of the insulator. This results in a favorable training of the electric field Ceramic breakdowns can be avoided.
  • the platinum center electrode can also be coated be, this coating by means of boriding, alitriding, Nitriding or siliconizing can take place. Through this The platinum electrode can be gas-tight in the coating Ceramics are sintered. The connection of the platinum center electrode, Isolator and contact pin by solder also contributes to a gas-tight connection, whereby the contact pin corrosion avoided and a withdrawal of the Contact pin is prevented. The contact pin can ultimately also through an electrically conductive ceramic-metal layer be replaced.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Spark Plugs (AREA)
EP97930294A 1996-06-15 1997-05-22 Zündkerze für eine brennkraftmaschine Expired - Lifetime EP0845167B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19623989 1996-06-15
DE19623989A DE19623989C2 (de) 1996-06-15 1996-06-15 Zündkerze für eine Brennkraftmaschine
PCT/DE1997/001025 WO1997049153A1 (de) 1996-06-15 1997-05-22 Zündkerze für eine brennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0845167A1 EP0845167A1 (de) 1998-06-03
EP0845167B1 true EP0845167B1 (de) 2003-01-15

Family

ID=7797078

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97930294A Expired - Lifetime EP0845167B1 (de) 1996-06-15 1997-05-22 Zündkerze für eine brennkraftmaschine

Country Status (7)

Country Link
US (1) US5952770A (un)
EP (1) EP0845167B1 (un)
JP (1) JPH11510958A (un)
CN (1) CN1064483C (un)
BR (1) BR9706533A (un)
DE (2) DE19623989C2 (un)
WO (1) WO1997049153A1 (un)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19818214A1 (de) * 1998-04-24 1999-10-28 Bosch Gmbh Robert Zündkerze für eine Brennkraftmaschine
DE19833316A1 (de) * 1998-07-24 2000-01-27 Bosch Gmbh Robert Zündkerze für eine Brennkraftmaschine
CA2291351C (en) * 1998-12-04 2004-03-16 Denso Corporation Spark plug for internal combustion engine having better self-cleaning function
US6628051B1 (en) 1999-07-29 2003-09-30 Robert Bosch Gmbh Spark plug for an internal combustion engine
DE19939319B4 (de) * 1999-07-29 2004-05-06 Robert Bosch Gmbh Zündkerze für eine Brennkraftmaschine
JP2001248531A (ja) * 2000-03-07 2001-09-14 Daihatsu Motor Co Ltd 内燃機関の点火プラグ取付構造
DE10016416A1 (de) * 2000-04-01 2001-10-18 Bosch Gmbh Robert Glaskeramik, Verfahren zu deren Herstellung und Zündkerze mit einer derartigen Glaskeramik
DE10036008A1 (de) * 2000-07-25 2002-02-07 Bosch Gmbh Robert Zündkerze für einen Verbrennungsmotor und Verfahren zur Herstellung einer Zündkerze
US7223144B2 (en) * 2001-02-15 2007-05-29 Integral Technologies, Inc. Low cost spark plug manufactured from conductive loaded resin-based materials
US7224108B2 (en) * 2001-02-15 2007-05-29 Integral Technologies, Inc. Low cost spark plug manufactured from conductive loaded resin-based materials
DE10129040A1 (de) 2001-06-15 2003-01-02 Bosch Gmbh Robert Zündkerze
DE10155404A1 (de) * 2001-11-10 2003-05-28 Bosch Gmbh Robert Zündkerze und Brennraumanordnung
FI115009B (fi) 2003-03-18 2005-02-15 Waertsilae Finland Oy Menetelmä polttomoottorin sytytystulpan valmistamiseksi
WO2005117220A2 (en) * 2004-05-25 2005-12-08 Integral Technologies, Inc. Low cost spark plug manufactured from conductive loaded resin-based materials
JP2006085941A (ja) * 2004-09-14 2006-03-30 Denso Corp 内燃機関用のスパークプラグ
JP4539344B2 (ja) 2005-01-26 2010-09-08 株式会社デンソー 内燃機関用のスパークプラグ及びその製造方法
JP4871165B2 (ja) * 2006-03-14 2012-02-08 日本特殊陶業株式会社 内燃機関用スパークプラグ
US7443089B2 (en) 2006-06-16 2008-10-28 Federal Mogul World Wide, Inc. Spark plug with tapered fired-in suppressor seal
US8013502B2 (en) * 2007-05-17 2011-09-06 Federal-Mogul Corporation Small-diameter spark plug with resistive seal
US20100326379A1 (en) * 2009-02-13 2010-12-30 Dana Beall Narrow profile horizontally-opposed engine
EP3173596B1 (en) 2015-11-25 2020-04-01 Caterpillar Energy Solutions GmbH Pre-combustion chamber assembly for internal combustion engines

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0073939A1 (de) * 1981-08-20 1983-03-16 Robert Bosch Gmbh Hochspannungszündkerze
EP0101547A2 (de) * 1982-08-14 1984-02-29 Robert Bosch Gmbh Hochspannungszündkerze
US4439707A (en) * 1980-07-23 1984-03-27 Nippon Soken, Inc. Spark plug with a wide discharge gap
US5132587A (en) * 1987-03-31 1992-07-21 Lemelson Jerome H Spark plug electrodes
EP0554852A2 (de) * 1992-02-05 1993-08-11 BERU Ruprecht GmbH & Co. KG Zündkerze
WO1993021674A1 (en) * 1992-04-09 1993-10-28 Hipp Augustus J High performance spark plug
DE4422733A1 (de) * 1994-06-29 1996-01-04 Bosch Gmbh Robert Zündkerze für Brenkraftmaschinen

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1237265A (en) * 1915-08-04 1917-08-14 French Power Spark Plug Company Spark-plug.
DE916137C (de) * 1944-05-28 1954-08-05 Bosch Gmbh Robert Gleifunkenzuendkerze
US4083395A (en) * 1976-08-20 1978-04-11 Romano Paul L Acoustic drape
JPH06101363B2 (ja) * 1988-03-31 1994-12-12 日本特殊陶業株式会社 内燃機関用スパークプラグ
DE68924526T2 (de) * 1989-01-09 1996-04-04 Ngk Spark Plug Co Zündkerzenzusammenbau.
JPH02220385A (ja) * 1989-02-17 1990-09-03 Ngk Spark Plug Co Ltd 内燃機関のスパークプラグ
JP2847681B2 (ja) * 1991-12-03 1999-01-20 日本特殊陶業株式会社 スパークプラグの中心電極の製造方法
JP3500664B2 (ja) * 1993-08-19 2004-02-23 株式会社デンソー 内燃機関用スパークプラグ
DE4431143B4 (de) * 1994-09-01 2004-09-23 Robert Bosch Gmbh Zündkerze für eine Brennkraftmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4439707A (en) * 1980-07-23 1984-03-27 Nippon Soken, Inc. Spark plug with a wide discharge gap
EP0073939A1 (de) * 1981-08-20 1983-03-16 Robert Bosch Gmbh Hochspannungszündkerze
EP0101547A2 (de) * 1982-08-14 1984-02-29 Robert Bosch Gmbh Hochspannungszündkerze
US5132587A (en) * 1987-03-31 1992-07-21 Lemelson Jerome H Spark plug electrodes
EP0554852A2 (de) * 1992-02-05 1993-08-11 BERU Ruprecht GmbH & Co. KG Zündkerze
WO1993021674A1 (en) * 1992-04-09 1993-10-28 Hipp Augustus J High performance spark plug
DE4422733A1 (de) * 1994-06-29 1996-01-04 Bosch Gmbh Robert Zündkerze für Brenkraftmaschinen

Also Published As

Publication number Publication date
US5952770A (en) 1999-09-14
DE19623989C2 (de) 1998-07-30
DE19623989A1 (de) 1998-01-02
CN1194733A (zh) 1998-09-30
WO1997049153A1 (de) 1997-12-24
CN1064483C (zh) 2001-04-11
DE59709144D1 (de) 2003-02-20
EP0845167A1 (de) 1998-06-03
JPH11510958A (ja) 1999-09-21
BR9706533A (pt) 1999-07-20

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