EP0134355A1 - Electrode du type à pont pour bougie d'allumage - Google Patents

Electrode du type à pont pour bougie d'allumage Download PDF

Info

Publication number
EP0134355A1
EP0134355A1 EP83305143A EP83305143A EP0134355A1 EP 0134355 A1 EP0134355 A1 EP 0134355A1 EP 83305143 A EP83305143 A EP 83305143A EP 83305143 A EP83305143 A EP 83305143A EP 0134355 A1 EP0134355 A1 EP 0134355A1
Authority
EP
European Patent Office
Prior art keywords
electrode
spark plug
spark
plug
bridge
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Withdrawn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
EP83305143A
Other languages
German (de)
English (en)
Inventor
Ying-Chung Chang
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.)
CHANG YING CHUNG
Original Assignee
CHANG YING CHUNG
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 CHANG YING CHUNG filed Critical CHANG YING CHUNG
Priority to EP83305143A priority Critical patent/EP0134355A1/fr
Publication of EP0134355A1 publication Critical patent/EP0134355A1/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • H01T13/46—Sparking plugs having two or more spark gaps
    • H01T13/467—Sparking plugs having two or more spark gaps in parallel connection

Definitions

  • This invention relates to spark plugs
  • spark plugs are classified as “cold plugs” and “hot plugs”. Spark plugs conventionally comprise a central electrode, a ground electrode, a metallic (usually steel) thread portion and an insulating portion. Since ignition of internal combustion engines is well-known, no further description will be included in this specification. However, the gap between the said two electrodes bears a close relation to the ignition function in that gap dimensions are varied according to the compression ratio of engine as well as characteristics of the combustion chamber and the ignition system.
  • the ground electrode of a conventional spark plug is formed from a bar bent at an angle and attached to the bottom of the thread portion so as to form a suitable gap relative to the central electrode (i.e.
  • the ignition gap Since the angled ground electrode is fixed at one end, certain drawbacks arise in that at the temperatures generated in the cylinder the angled ground electrode bends away from the centre electrode and the gap therebetween increases. As soon as the said gap increases, a higher voltage is then necessary to generate spark across the electrode gap. Therefore, inspection and adjustment on the plug are necessary from time to time.
  • the present invention provides a spark plug which overcomes the drawbacks outlined above and, accordingly the angled ground electrode of a conventional spark plug, is replaced by at least one bridge electrode dispersed across the metallic thread portion of the plug relative to the central electrode and to form an electrode gap between the electrodes. Since the or each ground/bridge electrode is fixed at both ends, it possesses greater strength to withstand the high operational temperatures for longer periods without adjustment of the spark or electrode gap. In addition, the ground/bridge electrode spark plug of the present invention has larger spark generating area and, as a result, an improved spark is generated. Further, the spark plug of the invention has the advantage of improved electrode gap condition thereby reducing a build-up of carbon deposit as the electrodes and consequent fouling of the plug.
  • a cold or hot plug may also be designed so as to have the fuel mixture completely burned either at high or low engine speeds. Moreover, when the engine running for a long time under full load, the wear and tear of the plug electrodes' under overheat condition will be reduced thereby extending the serviceable life of the plug, increasing the horsepower of engine, and reducing fuel consumption.
  • spark plug accord- i n g to the present invention comprises a central electrode (1), a metallic (e.g. steel) threaded portion (2) and a bridge electrode generally indicated at ( 3 ).
  • the bridge electrode (3) may be a dual bar bridge type as shown in Figures 1 and 1A, or may be a single bar bridge type as shown in Figures 2 and 2A.
  • the gap between said two electrodes, (central and br i d ge/ground) may be varied in accordance with the compression ratio of engine, the characteristics of the combustion chamber and the ignition system.
  • the bridge electrode (3) is made by fixedly connecting both ends thereof to the bottom of the threaded portion (2) by, for example, welding (as shown in Figures 2 and 2A), or by welding the bridge bars to projections 2A extending longitudinally from the bottom of the threaded portion (2) (as shown in Figures l.and lA ). Since the both ends of the bridge electrode (3) are fixedly attached directly or indirectly to the bottom of the threaded portion (2), the electrode arrangement possesses improved strength to maintain the required gap relative to the central electrode (1) without change under normal high temperature of the engine.
  • the single bar and the dual bar type of bridge electrode (3) has a larger spark generating area than the conventional spark plug, it has better spark generating capacity. Further, since the bridge electrode is fixed to the bottom of the steel thread portion with two ends, it may be deemed as a low resistance circuit in terms of the current jumping between the centre electrode (1) and the bridge electrode (3) and, consequently, the voltage required to generate a spark is low, and the fouling would also be low. Under these circumstances, the voltage provided by the ignition coil to the plug should always be higher than that actually required to generate a spark and the normal spark generating function can be maintained substantially constantly so as to have the fuel mixture in the engine completely burned irrespective of whether the engine is operated under high or low running speed. Consequently, fouling of the plug by carbon deposits will be reduced to a minimum so that the engine cannot only be run longer under full load condition but, also, wear and tear of the plug is minimized because the plug is not normally subjected to over-heat condition.
  • the resistance and heat-resistance are also varied so as to adopt to the different type of temperature, i.e., the cold plug and hot plug.

Landscapes

  • Spark Plugs (AREA)
EP83305143A 1983-09-05 1983-09-05 Electrode du type à pont pour bougie d'allumage Withdrawn EP0134355A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP83305143A EP0134355A1 (fr) 1983-09-05 1983-09-05 Electrode du type à pont pour bougie d'allumage

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP83305143A EP0134355A1 (fr) 1983-09-05 1983-09-05 Electrode du type à pont pour bougie d'allumage

Publications (1)

Publication Number Publication Date
EP0134355A1 true EP0134355A1 (fr) 1985-03-20

Family

ID=8191273

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83305143A Withdrawn EP0134355A1 (fr) 1983-09-05 1983-09-05 Electrode du type à pont pour bougie d'allumage

Country Status (1)

Country Link
EP (1) EP0134355A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102396122A (zh) * 2009-03-31 2012-03-28 费德罗-莫格尔点火公司 具有桥接的接地电极的火花点火装置及其制造方法
US9124076B2 (en) 2011-08-03 2015-09-01 Robert Bosch Gmbh Spark plug
DE102015103666B3 (de) * 2014-11-14 2016-01-14 Federal-Mogul Ignition Gmbh Verfahren zum Herstellen einer Zündkerze
DE102015110601B3 (de) * 2015-07-01 2017-01-05 Federal-Mogul Ignition Gmbh Zündkerze
DE102016006350A1 (de) * 2016-05-23 2017-11-23 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Zündkerze für eine Hochfrequenz-Zündanlage
US11990731B2 (en) 2019-04-30 2024-05-21 Federal-Mogul Ignition Llc Spark plug electrode and method of manufacturing same

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR431784A (fr) * 1911-06-30 1911-11-20 Societe Generale Des Huiles & Fournitures Industri Bougie d'allumage électrique
GB115807A (en) * 1917-03-16 1918-07-18 Carburateur Aris Sa Improvements in or relating to Sparking Plugs for Explosion Motors.
US1413478A (en) * 1920-02-27 1922-04-18 Hough Clayton Spark plug
FR993259A (fr) * 1949-06-15 1951-10-29 Bougie d'allumage pour moteurs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR431784A (fr) * 1911-06-30 1911-11-20 Societe Generale Des Huiles & Fournitures Industri Bougie d'allumage électrique
GB115807A (en) * 1917-03-16 1918-07-18 Carburateur Aris Sa Improvements in or relating to Sparking Plugs for Explosion Motors.
US1413478A (en) * 1920-02-27 1922-04-18 Hough Clayton Spark plug
FR993259A (fr) * 1949-06-15 1951-10-29 Bougie d'allumage pour moteurs

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102396122A (zh) * 2009-03-31 2012-03-28 费德罗-莫格尔点火公司 具有桥接的接地电极的火花点火装置及其制造方法
US8237341B2 (en) 2009-03-31 2012-08-07 Federal-Mogul Ignition Company Spark ignition device with bridging ground electrode and method of construction thereof
EP2415132A4 (fr) * 2009-03-31 2015-06-24 Federal Mogul Ignition Co Dispositif à allumage par étincelle avec électrode de terre pontante et son procédé de fabrication
US9124076B2 (en) 2011-08-03 2015-09-01 Robert Bosch Gmbh Spark plug
DE102015103666B3 (de) * 2014-11-14 2016-01-14 Federal-Mogul Ignition Gmbh Verfahren zum Herstellen einer Zündkerze
US9401587B2 (en) 2014-11-14 2016-07-26 Federal-Mogul Ignition Gmbh Method of manufacturing an ignition plug
DE102015110601B3 (de) * 2015-07-01 2017-01-05 Federal-Mogul Ignition Gmbh Zündkerze
US9948066B2 (en) 2015-07-01 2018-04-17 Federal-Mogul Ignition Gmbh Spark plug
DE102016006350A1 (de) * 2016-05-23 2017-11-23 Rosenberger Hochfrequenztechnik Gmbh & Co. Kg Zündkerze für eine Hochfrequenz-Zündanlage
US10971902B2 (en) 2016-05-23 2021-04-06 Rosenberger Hochfrequenztechnik Gmbh Spark plug for a high frequency ignition system
US11990731B2 (en) 2019-04-30 2024-05-21 Federal-Mogul Ignition Llc Spark plug electrode and method of manufacturing same

Similar Documents

Publication Publication Date Title
US6229253B1 (en) Spark plug with specific gap between insulator and electrodes
EP0470688B1 (fr) Bougie d'allumage à intervalles d'éclatement multiples pour moteur à combustion interne
EP0112890B1 (fr) Systeme d'allumage pour un moteur a quatre temps du type otto
US8058785B2 (en) Spark plug structure for improved ignitability
US4901688A (en) Ignition plug for use in internal combustion engines and an ignition process by the use thereof
EP0134355A1 (fr) Electrode du type à pont pour bougie d'allumage
US6807933B2 (en) Multiple sparking ignition device
US5731655A (en) Spark plug with 360 degree firing tip
US5502352A (en) Spark plug having horizontal discharge
US5693999A (en) Multiple gap spark plug for internal combustion engine
US20060033411A1 (en) Spark plug
US4265205A (en) Controlled-ignition I.C. engine with thermal detection system
US7588021B2 (en) Spark plug circuit
EP0518707A2 (fr) Bougie d'allumage ayant une pointe de platine sur son électrode extérieure
EP0663526B1 (fr) Dispositif d'allumage pour un moteur à combustion interne
EP0376147B1 (fr) Bougies d'allumage pour moteurs à combustion interne
US2953720A (en) Engel
US5180313A (en) Ground connection for the spark plugs of a multi-cylinder internal-combustion vehicle engine
EP0758152B1 (fr) Bougie d'allumage
KR100701570B1 (ko) 내연기관용 점화 플러그의 전극 구조 및 전극 제조방법
US20030076022A1 (en) Spark plug
KR100215509B1 (ko) 가솔린엔진의 점화플러그
RU2066909C1 (ru) Способ реставрации свечей зажигания двигателей внутреннего сгорания
US3324330A (en) Spark plug having a thermal primer ring
KR100588074B1 (ko) 내연기관용 점화플러그

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

Designated state(s): DE FR GB IT

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

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19851217