US2776394A - Screened spark plug - Google Patents

Screened spark plug Download PDF

Info

Publication number
US2776394A
US2776394A US339138A US33913853A US2776394A US 2776394 A US2776394 A US 2776394A US 339138 A US339138 A US 339138A US 33913853 A US33913853 A US 33913853A US 2776394 A US2776394 A US 2776394A
Authority
US
United States
Prior art keywords
spark plug
bushing
screened
combustion chamber
screen
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
US339138A
Inventor
Richard P Cuny
Wiedis Robert
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.)
Bendix Aviation Corp
Original Assignee
Bendix Aviation Corp
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 Bendix Aviation Corp filed Critical Bendix Aviation Corp
Priority to US339138A priority Critical patent/US2776394A/en
Application granted granted Critical
Publication of US2776394A publication Critical patent/US2776394A/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01T13/54—Sparking plugs having electrodes arranged in a partly-enclosed ignition chamber

Definitions

  • the present invention relates to spark plugs and more particularly to spark plugs for use in a highly turbulent atmosphere.
  • ignition In combustion chambers such as in a fuel air starter where ignition of a fuel and air mixture is required in a highly turbulent atmosphere, ignition is extremely diicult.
  • the high turbulence of the swirling air in a combustion chamber has a tendency to diffuse the spark energy before ignition can take place.
  • a perforated cylindrical screen is placed around the electrode portion of a high tension spark plug. This permits ignition to take place in a highly turbulent atmosphere as the screen acts to lower the velocity of and to disperse the charge in the neighborhood of the spark.
  • Another object of the invention is to provide an improved spark plug for use in a highly turbulent atmosphere.
  • Another object of the invention is to provide improved ignition means for igniting a mixture of fuel and air in a highly turbulent atmosphere.
  • the single figure is a partial cutaway view of a fuel air starter embodying the invention.
  • a starter is indicated generally by the numeral 1 and has a housing 2 adapted to house the turbine and gear train (not IShown) of the starter.
  • a combustion chamber 3 is secured to the housing 2 by bolts 4 or in any other conventional manner.
  • the combustion chamber 3 has an opening 4 adapted to receive a bushing 5 which may be secured to the wall of the combustion chamber by welding or in any other conventional manner.
  • the bushing 5 has a shoulder 2,776,394 Patented Jan. 1, 1957 "ice 6 adapted to receive a screen 7.
  • the screen 7 is perforated with a plurality of openings 8.
  • a bushing 9 is adapted to screw into the bushing 5 and serves to hold the screen 7 against the shoulder 6.
  • a pin 10 prevents the bushing 9 from turning.
  • the bushing 9 is adapted to receive spark plug 11 having electrodes 12 and 13.
  • An electrical conductor 1.4i is adapted to connect the spark plug 11 in a conventional manner to a source of electrical energy (not shown).
  • the combustion chamber 3 has an inlet 15 through which a mixture of fuel and air under pressure enter the chamber 3.
  • a mixture of fuel and air under pressure enters the combustion chamber 3 through the entrance 15 and is ignited by means ⁇ of the spark plug 11.
  • the perforated screen 7 surrounding the electrodes 12 and 13 lower the velocity or the mixture of fuel and air and thereby permit ignition to take place. In other words the turbulency in the vicinity of the electrodes is reduced and excessive diffusion of the spark energy is prevented.
  • Ignition means for use in a combustion chamber having a highly turbulent atmosphere and a wall defining said chamber, comprising a rst interiorly-threaded bushing adapted to be secured to and in the wall of said combustion chamber and being further adapted when so secured to extend an appreciable distance into said combustion chamber, a second interiorly and exteriorly threaded bushing screw-threadedly engaged in said rst bushing, said first bushing having an inwardly projecting shoulder, a tubular wire screen having a radially outwardly extending annular end portion engaging the inner wall -of Isaid shoulder, said screen having said annular end portion thereof clamped between said inner wall of said shoulder of said irst bushing and the inner end of said second bushing, said screen having another portion adapted to extend into said combustion chamber an appreciable distance inwardly of the inner end of said first bushing, and a spark plug screw-threadedly engaged in -said second bushing, and said spark plug having finger electrodes extending into said

Landscapes

  • Spark Plugs (AREA)

Description

Jan. l, 1957 R P, CUNY ET AL 2,7?6g4 SCREENED SPARK PLUG.
Filed Feb. 26, 1955 IN V EN TORS R/CHAD F? CUNY RUB/ERT W/ED/ HfORA/Ey United States Patent SCREENED SPARK PLUG Richard P. Curry, Union City, and Robert Wiedis, May- Wood, N. J., assignors to Bendix Aviation Corporation, Teterboro, N. J., a corporation of Delaware Application February 26, 1953, Serial No. 339,138
1 Claim. (Cl. 317-96) The present invention relates to spark plugs and more particularly to spark plugs for use in a highly turbulent atmosphere.
In combustion chambers such as in a fuel air starter where ignition of a fuel and air mixture is required in a highly turbulent atmosphere, ignition is extremely diicult. The high turbulence of the swirling air in a combustion chamber has a tendency to diffuse the spark energy before ignition can take place.
In the present invention a perforated cylindrical screen is placed around the electrode portion of a high tension spark plug. This permits ignition to take place in a highly turbulent atmosphere as the screen acts to lower the velocity of and to disperse the charge in the neighborhood of the spark.
It is an object of the present invention to provide novel shielding means for spark plugs.
Another object of the invention is to provide an improved spark plug for use in a highly turbulent atmosphere.
Another object of the invention is to provide improved ignition means for igniting a mixture of fuel and air in a highly turbulent atmosphere.
The above and other objects and features of the invention will appear more fully hereinafter from a consideration of the following description taken in connection with the accompanying drawing wherein one ernbodiment of the invention is illustrated by way of example.
In the drawing, the single figure is a partial cutaway view of a fuel air starter embodying the invention.
Referring to the drawing, a starter is indicated generally by the numeral 1 and has a housing 2 adapted to house the turbine and gear train (not IShown) of the starter. A combustion chamber 3 is secured to the housing 2 by bolts 4 or in any other conventional manner. The combustion chamber 3 has an opening 4 adapted to receive a bushing 5 which may be secured to the wall of the combustion chamber by welding or in any other conventional manner. The bushing 5 has a shoulder 2,776,394 Patented Jan. 1, 1957 "ice 6 adapted to receive a screen 7. The screen 7 is perforated with a plurality of openings 8. A bushing 9 is adapted to screw into the bushing 5 and serves to hold the screen 7 against the shoulder 6. A pin 10 prevents the bushing 9 from turning.
The bushing 9 is adapted to receive spark plug 11 having electrodes 12 and 13. An electrical conductor 1.4i is adapted to connect the spark plug 11 in a conventional manner to a source of electrical energy (not shown).
The combustion chamber 3 has an inlet 15 through which a mixture of fuel and air under pressure enter the chamber 3.
In operation, a mixture of fuel and air under pressure enters the combustion chamber 3 through the entrance 15 and is ignited by means `of the spark plug 11. The perforated screen 7 surrounding the electrodes 12 and 13 lower the velocity or the mixture of fuel and air and thereby permit ignition to take place. In other words the turbulency in the vicinity of the electrodes is reduced and excessive diffusion of the spark energy is prevented.
Although only one embodiment of the invention has been illustrated and described, various changes in the form and relative arrangement of the parts, which will now appear to those skilled in the art may be made without departing from the scope of the invention.
What is claimed is:
Ignition means for use in a combustion chamber having a highly turbulent atmosphere and a wall defining said chamber, comprising a rst interiorly-threaded bushing adapted to be secured to and in the wall of said combustion chamber and being further adapted when so secured to extend an appreciable distance into said combustion chamber, a second interiorly and exteriorly threaded bushing screw-threadedly engaged in said rst bushing, said first bushing having an inwardly projecting shoulder, a tubular wire screen having a radially outwardly extending annular end portion engaging the inner wall -of Isaid shoulder, said screen having said annular end portion thereof clamped between said inner wall of said shoulder of said irst bushing and the inner end of said second bushing, said screen having another portion adapted to extend into said combustion chamber an appreciable distance inwardly of the inner end of said first bushing, and a spark plug screw-threadedly engaged in -said second bushing, and said spark plug having finger electrodes extending into said tubular wire screen from said plug.
References Cited in the le of this patent UNITED STATES PATENTS
US339138A 1953-02-26 1953-02-26 Screened spark plug Expired - Lifetime US2776394A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US339138A US2776394A (en) 1953-02-26 1953-02-26 Screened spark plug

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US339138A US2776394A (en) 1953-02-26 1953-02-26 Screened spark plug

Publications (1)

Publication Number Publication Date
US2776394A true US2776394A (en) 1957-01-01

Family

ID=23327672

Family Applications (1)

Application Number Title Priority Date Filing Date
US339138A Expired - Lifetime US2776394A (en) 1953-02-26 1953-02-26 Screened spark plug

Country Status (1)

Country Link
US (1) US2776394A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017541A (en) * 1957-10-29 1962-01-16 Ford Motor Co Glow plug igniter
US3017540A (en) * 1957-10-29 1962-01-16 Ford Motor Co Glow plug igniter
US3207953A (en) * 1962-11-07 1965-09-21 Hunter Incandescent ceramic electrical igniter
US3322989A (en) * 1962-11-28 1967-05-30 Teves Kg Alfred Ignition device
US5879150A (en) * 1998-05-08 1999-03-09 Crichton; Henry Flameless igniter for use with a tank burner of a fluid fuel system
US5938426A (en) * 1997-09-10 1999-08-17 Mcgehee; Van C. Pilotless flare ignitor
US20020180326A1 (en) * 2001-06-05 2002-12-05 Christian Francesconi Spark plug of an internal combustion engine
WO2009059339A1 (en) * 2007-11-05 2009-05-14 Christian Francesconi Spark plug comprising a ground electrode support
US20110065350A1 (en) * 2009-09-11 2011-03-17 Woodward Governor Company Method for Forming an Electrode for a Spark Plug
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

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1243205A (en) * 1915-02-02 1917-10-16 Joseph T Norman Spark-plug.
US1870981A (en) * 1930-02-17 1932-08-09 John M Auzin Spark plug for internal combustion engines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1243205A (en) * 1915-02-02 1917-10-16 Joseph T Norman Spark-plug.
US1870981A (en) * 1930-02-17 1932-08-09 John M Auzin Spark plug for internal combustion engines

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3017540A (en) * 1957-10-29 1962-01-16 Ford Motor Co Glow plug igniter
US3017541A (en) * 1957-10-29 1962-01-16 Ford Motor Co Glow plug igniter
US3207953A (en) * 1962-11-07 1965-09-21 Hunter Incandescent ceramic electrical igniter
US3322989A (en) * 1962-11-28 1967-05-30 Teves Kg Alfred Ignition device
US5938426A (en) * 1997-09-10 1999-08-17 Mcgehee; Van C. Pilotless flare ignitor
US5879150A (en) * 1998-05-08 1999-03-09 Crichton; Henry Flameless igniter for use with a tank burner of a fluid fuel system
US7615914B2 (en) 2001-06-05 2009-11-10 Ge Jenbacher Gmbh & Co Ohg Spark plug of an internal combustion engine
US20020180326A1 (en) * 2001-06-05 2002-12-05 Christian Francesconi Spark plug of an internal combustion engine
AT410151B (en) * 2001-06-05 2003-02-25 Jenbacher Ag SPARK PLUG OF AN INTERNAL COMBUSTION ENGINE
AU2008324739B2 (en) * 2007-11-05 2012-08-30 Ge Jenbacher Gmbh & Co Og Spark plug comprising a ground electrode support
US20110089803A1 (en) * 2007-11-05 2011-04-21 Christian Francesconi Spark Plug Comprising a Ground Electrode Support
US8143772B2 (en) 2007-11-05 2012-03-27 Christian Francesconi Spark plug comprising a ground electrode support
WO2009059339A1 (en) * 2007-11-05 2009-05-14 Christian Francesconi Spark plug comprising a ground electrode support
US20110065350A1 (en) * 2009-09-11 2011-03-17 Woodward Governor Company Method for Forming an Electrode for a Spark Plug
US20110062850A1 (en) * 2009-09-11 2011-03-17 Woodward Governor Company Pre-Chamber Spark Plug and Electrodes Therefor
US8461750B2 (en) 2009-09-11 2013-06-11 Woodward, Inc. Pre-chamber spark plug and electrodes therefor
US8657641B2 (en) 2009-09-11 2014-02-25 Woodward Inc. Method for forming an electrode for a spark plug
US9893497B2 (en) 2010-11-23 2018-02-13 Woodward, Inc. Controlled spark ignited flame kernel flow
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
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
US9765682B2 (en) 2013-06-10 2017-09-19 Woodward, Inc. Multi-chamber igniter
US8839762B1 (en) 2013-06-10 2014-09-23 Woodward, Inc. Multi-chamber igniter
US9653886B2 (en) 2015-03-20 2017-05-16 Woodward, Inc. Cap shielded ignition system
US9840963B2 (en) 2015-03-20 2017-12-12 Woodward, Inc. Parallel prechamber ignition system
US9843165B2 (en) 2015-03-20 2017-12-12 Woodward, Inc. Cap shielded ignition system
US9890689B2 (en) 2015-10-29 2018-02-13 Woodward, Inc. Gaseous fuel combustion

Similar Documents

Publication Publication Date Title
US2776394A (en) Screened spark plug
US4715337A (en) Engine ignition system with an insulated and extendable extender
US2525207A (en) Ignition torch for internal-combustion prime movers
KR880008480A (en) Improved performance spark plug
GB793325A (en) Improvements in or relating to combustion apparatus
GB1200552A (en) Glow plug igniter
US4307316A (en) Self cleaning spark plug
GB1046379A (en) Improvements in combined spark plugs and fuel injection nozzles
US2056739A (en) Explosionproof shielded spark plug
US1331282A (en) Spark-plug
US2361975A (en) Spark plug
SU421854A1 (en) MAPS
US3263729A (en) Fuel ignitor arrangement for a heater
GB651093A (en) Improvements in and relating to combustion chambers for jet motors or gas turbines
GB580477A (en) Improvements in and relating to spark plugs for internal combustion engines
US3106059A (en) Oxidizer inlet and igniter for a rocket
GB1329840A (en) Device for burning the unsburnt residues in the exhaust gases of heat engines
US3090200A (en) Torch igniter
US2150724A (en) Ignition apparatus
US3088282A (en) Ignition apparatus
US2733385A (en) bychinsky
US1862876A (en) Connecter housing
US2687713A (en) Surface arc antechamber spark plug
GB1518602A (en) Sparking plugs
US2343455A (en) Ignition distributor