GB588074A - Improvements in and connected with sparking plugs - Google Patents

Improvements in and connected with sparking plugs

Info

Publication number
GB588074A
GB588074A GB2221/45A GB222145A GB588074A GB 588074 A GB588074 A GB 588074A GB 2221/45 A GB2221/45 A GB 2221/45A GB 222145 A GB222145 A GB 222145A GB 588074 A GB588074 A GB 588074A
Authority
GB
United Kingdom
Prior art keywords
per cent
molybdenum
silver
copper
platinum
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
Application number
GB2221/45A
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.)
Mallory Metallurgical Products Ltd
Original Assignee
Mallory Metallurgical Products Ltd
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 Mallory Metallurgical Products Ltd filed Critical Mallory Metallurgical Products Ltd
Publication of GB588074A publication Critical patent/GB588074A/en
Expired legal-status Critical Current

Links

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

Landscapes

  • Powder Metallurgy (AREA)

Abstract

The core of a sparking plug electrode is made of a sintered molybdenum-copper or sintered molybdenum-silver composition. It may consist of a base selected from molybdenum, the carbides nitrides and borides of molybdenum and compositions thereof together with copper or silver. A preferred method of producing the core consists in mixing powdered ingredients in the desired proportion, pressing the mixture and sintering it in a reducing atmosphere. Powdered molybdenum alone may be pressed to the desired shape, sintered and during or after sintering impregnated by heating in contact with one or more low melting point metals such as copper or silver. Examples of suitable compositions of the core are:-60 per cent. molybdenum, 40 per cent. silver; 75 per cent. molybdenum, 25 per cent. copper; 50 per cent. molybdenum, 50 per cent. copper or silver; 65 per cent. molybdenum carbide, 35 per cent. silver. Examples of suitable alloys for a sheath for the electrode core are as follows:-96 per cent. platinum, 4 per cent. tungsten; 96 per cent. platinum, 4 per cent. molybdenum; 90 per cent. platinum, 10 per cent. rhodium; 88 per cent. platinum, 12 per cent. palladium.
GB2221/45A 1944-01-29 1945-09-29 Improvements in and connected with sparking plugs Expired GB588074A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US588074XA 1944-01-29 1944-01-29

Publications (1)

Publication Number Publication Date
GB588074A true GB588074A (en) 1947-05-13

Family

ID=22019042

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2221/45A Expired GB588074A (en) 1944-01-29 1945-09-29 Improvements in and connected with sparking plugs

Country Status (1)

Country Link
GB (1) GB588074A (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141795B (en) * 1954-02-05 1962-12-27 Renault Process for the production of tungsten electrodes for low-voltage spark plugs
GB2147660A (en) * 1983-10-03 1985-05-15 Rau Gmbh G Centre electrodes for spark plugs
EP0859436A1 (en) * 1997-02-12 1998-08-19 Beru AG Spark plug for internal combustion engine and method of making it
CN1056019C (en) * 1995-06-15 2000-08-30 日本电装株式会社 Spark plug for internal combustion engine
DE4431143B4 (en) * 1994-09-01 2004-09-23 Robert Bosch Gmbh Spark plug for an internal combustion engine
US8839762B1 (en) 2013-06-10 2014-09-23 Woodward, Inc. Multi-chamber igniter
US9172217B2 (en) 2010-11-23 2015-10-27 Woodward, Inc. Pre-chamber spark plug with tubular electrode and method of manufacturing same
US9476347B2 (en) 2010-11-23 2016-10-25 Woodward, Inc. Controlled spark ignited flame kernel flow in fuel-fed prechambers
US9653886B2 (en) 2015-03-20 2017-05-16 Woodward, Inc. Cap shielded ignition system
US9765682B2 (en) 2013-06-10 2017-09-19 Woodward, Inc. Multi-chamber igniter
US9840963B2 (en) 2015-03-20 2017-12-12 Woodward, Inc. Parallel prechamber ignition system
US9856848B2 (en) 2013-01-08 2018-01-02 Woodward, Inc. Quiescent chamber hot gas igniter
US9893497B2 (en) 2010-11-23 2018-02-13 Woodward, Inc. Controlled spark ignited flame kernel flow
US9890689B2 (en) 2015-10-29 2018-02-13 Woodward, Inc. Gaseous fuel combustion

Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1141795B (en) * 1954-02-05 1962-12-27 Renault Process for the production of tungsten electrodes for low-voltage spark plugs
GB2147660A (en) * 1983-10-03 1985-05-15 Rau Gmbh G Centre electrodes for spark plugs
DE4431143B4 (en) * 1994-09-01 2004-09-23 Robert Bosch Gmbh Spark plug for an internal combustion engine
CN1056019C (en) * 1995-06-15 2000-08-30 日本电装株式会社 Spark plug for internal combustion engine
EP0859436A1 (en) * 1997-02-12 1998-08-19 Beru AG Spark plug for internal combustion engine and method of making it
US6064144A (en) * 1997-02-12 2000-05-16 Beru Ag Spark plug for an internal combustion engine and process for its manufacture
US9476347B2 (en) 2010-11-23 2016-10-25 Woodward, Inc. Controlled spark ignited flame kernel flow in fuel-fed prechambers
US9172217B2 (en) 2010-11-23 2015-10-27 Woodward, Inc. Pre-chamber spark plug with tubular electrode and method of manufacturing same
US9893497B2 (en) 2010-11-23 2018-02-13 Woodward, Inc. Controlled spark ignited flame kernel flow
US10907532B2 (en) 2010-11-23 2021-02-02 Woodward. Inc. Controlled spark ignited flame kernel flow in fuel-fed prechambers
US11674494B2 (en) 2010-11-23 2023-06-13 Woodward, Inc. Pre-chamber spark plug with tubular electrode and method of manufacturing same
US9856848B2 (en) 2013-01-08 2018-01-02 Woodward, Inc. Quiescent chamber hot gas igniter
US10054102B2 (en) 2013-01-08 2018-08-21 Woodward, Inc. Quiescent chamber hot gas igniter
US8839762B1 (en) 2013-06-10 2014-09-23 Woodward, Inc. Multi-chamber igniter
US9765682B2 (en) 2013-06-10 2017-09-19 Woodward, Inc. Multi-chamber igniter
US9653886B2 (en) 2015-03-20 2017-05-16 Woodward, Inc. Cap shielded ignition system
US9843165B2 (en) 2015-03-20 2017-12-12 Woodward, Inc. Cap shielded ignition system
US9840963B2 (en) 2015-03-20 2017-12-12 Woodward, Inc. Parallel prechamber ignition system
US9890689B2 (en) 2015-10-29 2018-02-13 Woodward, Inc. Gaseous fuel combustion

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