EP0062710A1 - Mit einer Motorzündkerze zusammengebauter Ring - Google Patents

Mit einer Motorzündkerze zusammengebauter Ring Download PDF

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Publication number
EP0062710A1
EP0062710A1 EP81301546A EP81301546A EP0062710A1 EP 0062710 A1 EP0062710 A1 EP 0062710A1 EP 81301546 A EP81301546 A EP 81301546A EP 81301546 A EP81301546 A EP 81301546A EP 0062710 A1 EP0062710 A1 EP 0062710A1
Authority
EP
European Patent Office
Prior art keywords
spark
ring
ring assembly
attachment ring
hollow cylinder
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Withdrawn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
EP81301546A
Other languages
English (en)
French (fr)
Inventor
Enami Goto
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP81301546A priority Critical patent/EP0062710A1/de
Publication of EP0062710A1 publication Critical patent/EP0062710A1/de
Withdrawn legal-status Critical Current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
    • H01T13/02—Details
    • H01T13/08—Mounting, fixing or sealing of sparking plugs, e.g. in combustion chamber

Definitions

  • This invention relates to an improved fit-on type attachment ring assembly to be detachably fitted to a conventional engine ignition plug unit.
  • the invention provides a fit-on type attachment ring assembly for an engine spark plug unit and to be positioned between the latter and a cylinder cover of an internal combustion engine, characterized by a combination of a ring having an internal annular groove for reception of a dust-preventing fine wire gauze net and at least one radial air passage extending through the inner wall of said annular groove, and a hollow cylinder of a base metal and mechanically coupled with said ring, said hollow cylinder having integral outwardly extending end flanges and at least one air passage extending through the cylindrical wall thereof, said ring having a surface layer of a precious metal formed on at least the outer surfaces at its both ends contacting the inside surfaces of said end flanges of said hollow cylinder, for thereby providing a spark spreading electromagnetic effect at spark electrodes of the plug and a small supply of secondary air from outside and through thread gaps between the spark plug and the engine cylinder cover and towards the spark electrodes at the instance of fuel-air mixture.
  • the precious metal layer is of platinum, gold, silver, nickel, cobalt or nickel-cobalt. However, other similar precious metal or metals may also be used.
  • said base metal is copper, gun-metal or bronze.
  • the net is in the form of a strip overlapped at its ends.
  • the attachment ring assembly of the present invention comprises a metal ring, preferably made of copper, gun-metal, bronze or the like,, and formed with a precious metal layer applied at least on each of its end surfaces.
  • the attachment ring assembly also comprises a cylinder piece made of a base metal such as copper and formed with radially, outwardly extending end flanges which are kept in tight contact with the precious metal layers on the upper and lower end surfaces of the ring thereby forming two electrostatic voltage- generating couples, copper and nickel as an example.
  • This statical minor voltage generates and maintains electromagnetic fields around the plug male threads and ignition electrodes, so as to spread out the ignition sparks when the these electrodes are periodically discharged. This spark-spreading effect leads effectively the fuel consumption efficiency of the engine according to our knowledge.
  • the ring assembly according to this invention is formed with at least one secondary air inducing passage leading from outside to the mating thread gaps between the plug male threads and the cylinder cover female threads which fine thread gaps form a kind of air passage.
  • This high vacuum core will induce a very slight amount of secondary air from outside through the said air passages and plug thread gaps towards the spark electrodes.
  • This secondary air acts as a kind of igniton catalyzer according to our belief and accelerates the combustion efficiency.
  • the amount of secondary air induced into the engine cylinder at the very instance of fuel ignition is believed to be 0.01 - 0.03% of the primary combustion air according to our practical measurements.
  • the compression ratio reduction may be in the order of 0.5. Theoretically, this compression ratio reduction may be believed to reduce the fuel consumption rate substantially in correspon- ing manner.
  • numeral 1 represents a ring made of a base or imperfect metal such as copper, bronze,, gun metal or the like and coated with a precious metal such as platinum, gold, silver, nickel, chromium, or the like.
  • a precious metal such as platinum, gold, silver, nickel, chromium, or the like.
  • nickel, chromium or nickel-chromium alloy or double layer may be used for economical reasons.
  • the outer surface is serrated or the like as at 1a, thereby providing a frictional touch to the operator's finger.
  • annular groove 1b On the inside surface of the ring 1, there is provided an annular groove 1b, thereby providing upper and lower, inwardly projecting flanges 1c and 1d.
  • a plurality of radial openings 2 are drilled through the inner wall of the annular groove 1b, and the openings 2 will serve as secondary air introducting passages from outside, as will be more fully set forth.
  • Numeral 3 represents a fine-mesh,, wire gauze net strip which can be introduced into the annular groove 1b in a slightly overlapped manner at its ends. The necessary positioning can be automatically secured by the inherent resilience of the wire gauze net.3 which is made, preferably, of stainless steel.
  • Numeral 4 represents a flanged cylinder to be coupled with the ring proper 1.
  • This flanged cylinder 4 is also made of base metal, preferably copper. At the bottom end, this cylinder 4 is formed with an outwardly projecting bottom flange 4a.
  • One or more radial openings 5 are drilled through the cylindrical portion of the cylinder 4 at a position between its ends these radial openings serving as part of an air introducing passage in service.
  • the attachment ring 1 is detachably fitted on a conventional ignition plug 6 comprising an upper connection terminal 6a electrically connected to a centre electrode ? by a centre electrode, not shown, which is supported by a ceramic sleeve 6b.
  • An opposite spark electrode 8 is arranged with its tip end adjacent to the centre electrode 7.
  • the spark electrode 8 is integral with a depending male threaded metal sleeve 6c which is integral with a nut-and-ring portion 6d.
  • the attachment ring 1 is directly coupled with the ignition plug 6 in an tightly contacting way at the lower end portion of the the nut-and-ring portion 6d, and without insertion of a conventional tightening washer.
  • Figure 5 is an exploded schematic view of several parts of the attachment of the attachment ring, relative to the conventional plug and engine cylinder cover.
  • numeral 6 represents an ignition plug as before, while numeral 9 represents a related part of an engine cylinder cover.
  • the electromotive . force When the attachment ring and the cylinder cover are at 200°C under the service conditions of the engine, the electromotive . force will be 6.12 mV. This electromotive force will generate electromagnetic fields around the male screwed lower portion and the ignition electrodes of the ignition plug, as shown at B in Figure 5. The formation of electromagnetic field B contributes to spread out the ignition sparks and to serve for increasing the fuel combustion efficiency.
  • a and A' shown in Figure 5 represent only schematically the formation of intermediate electromagnetic fields around the attachment ring.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Spark Plugs (AREA)
EP81301546A 1981-04-08 1981-04-08 Mit einer Motorzündkerze zusammengebauter Ring Withdrawn EP0062710A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP81301546A EP0062710A1 (de) 1981-04-08 1981-04-08 Mit einer Motorzündkerze zusammengebauter Ring

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP81301546A EP0062710A1 (de) 1981-04-08 1981-04-08 Mit einer Motorzündkerze zusammengebauter Ring

Publications (1)

Publication Number Publication Date
EP0062710A1 true EP0062710A1 (de) 1982-10-20

Family

ID=8188271

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81301546A Withdrawn EP0062710A1 (de) 1981-04-08 1981-04-08 Mit einer Motorzündkerze zusammengebauter Ring

Country Status (1)

Country Link
EP (1) EP0062710A1 (de)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2017816A (en) * 1978-03-13 1979-10-10 Ito K Ignition plug accessories
US4214567A (en) * 1978-10-11 1980-07-29 Kunihiko Miyaji Internal combustion engines
US4232242A (en) * 1978-08-07 1980-11-04 Hsu Yun T Sparking plug with efficient air supplying system and a removable sitting device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2017816A (en) * 1978-03-13 1979-10-10 Ito K Ignition plug accessories
US4232242A (en) * 1978-08-07 1980-11-04 Hsu Yun T Sparking plug with efficient air supplying system and a removable sitting device
US4214567A (en) * 1978-10-11 1980-07-29 Kunihiko Miyaji Internal combustion engines

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Legal Events

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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): BE CH 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: 19830926

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GOTO, ENAMI