US3566850A - Glow plug construction - Google Patents

Glow plug construction Download PDF

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Publication number
US3566850A
US3566850A US766177A US3566850DA US3566850A US 3566850 A US3566850 A US 3566850A US 766177 A US766177 A US 766177A US 3566850D A US3566850D A US 3566850DA US 3566850 A US3566850 A US 3566850A
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US
United States
Prior art keywords
fuel
glow
annular
pin
section
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
US766177A
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English (en)
Inventor
Otto Beesch
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
Application granted granted Critical
Publication of US3566850A publication Critical patent/US3566850A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P19/00—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition
    • F02P19/02—Incandescent ignition, e.g. during starting of internal combustion engines; Combination of incandescent and spark ignition electric, e.g. layout of circuits of apparatus having glowing plugs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23Q—IGNITION; EXTINGUISHING-DEVICES
    • F23Q7/00—Incandescent ignition; Igniters using electrically-produced heat, e.g. lighters for cigarettes; Electrically-heated glowing plugs
    • F23Q7/001—Glowing plugs for internal-combustion engines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
    • F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
    • F02N19/06—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of combustion-air by flame generating means, e.g. flame glow-plugs

Definitions

  • a glow plug has a housing provided with an internal passages which is bounded by an inner circumferential surface and has an open front end.
  • An elongated glow pin is carried by the housing rigid therewith and extends with radial clearance through the passage.
  • a forward portion of the pin is located inwardly adjacent the open front end of the passage and ignition of the fuel takes place in the region of this forward front end portion.
  • An annular insert is mounted in the passage concentrically surrounding the forward end portion of the pin and defining annular clearances with the same and with the inner circumferential surface bounding the passage.
  • the present invention relates to ignition devices, and more particularly to a glow plug construction.
  • Ignition devices of the specific type here in question namely glow plugs
  • glow plugs are used for various purposes, such as in effecting the ignition of a combustible fluid in diesel engines to thereby in turn heat the aspirated combustible mixture on which the diesel engine runs.
  • glow plugs aid in startup of diesel engines as well as in after burning or after ignition at higher revolutions; their use assures that the diesel engine will rapidly achieve smooth operation after startup and will operate without smoking.
  • Glow plugs of this type are not new. They are known in the art and consist of a housing provided with a passage through which a glow pin extends axially. Fuel is supplied radially to the clearance between the pin and the inner circumferential surface bounding the passage and advances through this clearance to the front end portion of the glow pin, that is to the ignition region or chamber, where it is ignited.
  • the housing includes a tubular sleeve portion which surrounds the forward end portion of the glow pin and limits and defines the ignition region or chamber. This tubular sleeve portion is provided with one or more apertures.
  • a glow plug particularly a glow plug suitable for use in diesel engines but also for other applications, wherein a housing is provided with an internal passage having an open front end. The passage is bounded by an inner circumferential surface.
  • An elongated glow pin is rigid with the housing and extends with radial clearance through the passage. A forward end portion of the glow pin is located inwardly adjacent the open front end of the passage and ignition of fuel which is admitted through the radial clearance takes place in the region of this forward end portion.
  • an annular insert is mounted in the passage concentrically surrounding the forward end portion and ,defining annular clearances both with the forward end portion and with the inner circumferential surface. 7
  • this annular insert assures that during operation of my improved glow plug a ring of hot gas develops which, in conjunction with the presence of the annu lar insert, assures that in the annular clearance existing between the annular insert and the inner circumferential surface bounding the passage there is little turbulence in the fuel mixture. This reliably prevents extinguishing of the flame at different conditions of air flow outside the open front end of the passage.
  • FIG. is an axial section through a glow plug incorporating my novel invention.
  • my novel glow plug comprises a housing consisting of several parts.
  • the main housing part or section is identified with reference numeral 10 and carries rigid therewiththe tubular housing part or section
  • the sections 10 and 1 .4 respectiven ly are provided with a rear part and a front part of the passage in which the glowpin-ll is located.
  • the glow pin is surrounded by the tube 13 which is an atomizeror evaporator tubeof known construction and function and which may be considered a part or section of the housing so that the latter consists of the sections 10, 13 and 14.
  • the glow pin 11 defines with the inner circumferential surface bounding the passage, including the inner surface of the section 13, an annular conduit the rear part of which commuportion 1l,'that is within the confines of the section 14, that ignition of the fuel occurs.
  • the circumferential wall of the seetion 14 is provided with one or more apertures 14.
  • annular insert 15 is located within the open front end of the section 14 concentrically surrounding the forward end portion 11 of the glow pin 11 and defining with the same an inner annular clearance 16, and with the inner circumferential surface of the passage in the housing, that is here with the inner circumferential surface of the section 14, an outer annular clearance 17.
  • a glow plug for use in diesel engines comprising in combination, an elongated glow pin having a rear portion and a front portion having a free terminal end; connecting means for connecting said rear portion with a source of electrical energy for heating said glow pin; wall means having a first section surrounding and supportingly engaging said rearportion, and a tubular second section forming about saidfront portion an annular gap having a front opening forwardly of but'adjacent to said terminal end; fuel-admitting means'communicatin'g' with said annular gap'in the region of a rear end thereof for feeding an annular stream of liquid fuel throughsaid gap towards said front opening, whereby the fuel becomes yaporiz ed by contact with theheated frontportion of said glow,,pin;lai r admitting means for admittingair into the vaporized fuel for ignition of lar second section.
  • said air-admitting means comprising aperture means provided in said tubular second section intermediate said annular metal insert and said fuel admitting means.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
US766177A 1967-10-18 1968-10-09 Glow plug construction Expired - Lifetime US3566850A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEB0073123 1967-10-18

Publications (1)

Publication Number Publication Date
US3566850A true US3566850A (en) 1971-03-02

Family

ID=6977736

Family Applications (1)

Application Number Title Priority Date Filing Date
US766177A Expired - Lifetime US3566850A (en) 1967-10-18 1968-10-09 Glow plug construction

Country Status (5)

Country Link
US (1) US3566850A (enrdf_load_stackoverflow)
ES (1) ES142346Y (enrdf_load_stackoverflow)
FR (1) FR1577731A (enrdf_load_stackoverflow)
GB (1) GB1170220A (enrdf_load_stackoverflow)
SE (1) SE335449B (enrdf_load_stackoverflow)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4459948A (en) * 1980-10-30 1984-07-17 Beru-Werk Albert Ruprecht Gmbh & Co., K.G. Glow plug for internal combustion engines
US4462354A (en) * 1979-02-01 1984-07-31 Lucas Industries Limited Starting aids for internal combustion engines
US4587941A (en) * 1982-09-30 1986-05-13 Isuzu Motors Limited Intake burner
US4627405A (en) * 1983-05-13 1986-12-09 Robert Bosch Gmbh Apparatus for injecting fuel into combustion chambers
US20110129393A1 (en) * 2009-12-02 2011-06-02 Lecea Oscar A Electrically-Heated Contact Fuel Vaporizer for a Hydrocarbon Reformer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4007340C1 (enrdf_load_stackoverflow) * 1990-03-08 1990-10-11 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4010093C1 (en) * 1990-03-29 1991-08-14 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De Flame plug for IC-engine - has fuel metering insert and spaced evaporator tube to enclose heating bar

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1641421A (en) * 1925-07-24 1927-09-06 Louis O French Ignition device
US2594681A (en) * 1947-03-07 1952-04-29 Ricardo & Co Engineers Internal-combustion engine
US3107658A (en) * 1962-03-02 1963-10-22 Maschf Augsburg Nuernberg Ag Ignition device
US3234928A (en) * 1964-01-13 1966-02-15 Heat Master Corp Heater
US3353520A (en) * 1964-09-11 1967-11-21 Bosch Gmbh Robert Arrangement for heating the cylinders of diesel engines
US3407794A (en) * 1965-10-21 1968-10-29 Nippon Denso Company Ltd Glow plug arrangement for internal combustion engines, especially for starting of diesel engines

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1641421A (en) * 1925-07-24 1927-09-06 Louis O French Ignition device
US2594681A (en) * 1947-03-07 1952-04-29 Ricardo & Co Engineers Internal-combustion engine
US3107658A (en) * 1962-03-02 1963-10-22 Maschf Augsburg Nuernberg Ag Ignition device
US3234928A (en) * 1964-01-13 1966-02-15 Heat Master Corp Heater
US3353520A (en) * 1964-09-11 1967-11-21 Bosch Gmbh Robert Arrangement for heating the cylinders of diesel engines
US3407794A (en) * 1965-10-21 1968-10-29 Nippon Denso Company Ltd Glow plug arrangement for internal combustion engines, especially for starting of diesel engines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4462354A (en) * 1979-02-01 1984-07-31 Lucas Industries Limited Starting aids for internal combustion engines
US4459948A (en) * 1980-10-30 1984-07-17 Beru-Werk Albert Ruprecht Gmbh & Co., K.G. Glow plug for internal combustion engines
US4587941A (en) * 1982-09-30 1986-05-13 Isuzu Motors Limited Intake burner
US4627405A (en) * 1983-05-13 1986-12-09 Robert Bosch Gmbh Apparatus for injecting fuel into combustion chambers
US20110129393A1 (en) * 2009-12-02 2011-06-02 Lecea Oscar A Electrically-Heated Contact Fuel Vaporizer for a Hydrocarbon Reformer

Also Published As

Publication number Publication date
FR1577731A (enrdf_load_stackoverflow) 1969-08-08
ES142346Y (es) 1969-10-16
SE335449B (enrdf_load_stackoverflow) 1971-05-24
GB1170220A (en) 1969-11-12
ES142346U (es) 1969-02-16

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