EP0602745A1 - Bougie à incandescence à deux enroulements de commande pour des moteurs Diesel - Google Patents

Bougie à incandescence à deux enroulements de commande pour des moteurs Diesel Download PDF

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Publication number
EP0602745A1
EP0602745A1 EP93203524A EP93203524A EP0602745A1 EP 0602745 A1 EP0602745 A1 EP 0602745A1 EP 93203524 A EP93203524 A EP 93203524A EP 93203524 A EP93203524 A EP 93203524A EP 0602745 A1 EP0602745 A1 EP 0602745A1
Authority
EP
European Patent Office
Prior art keywords
coil
fore
heating
glow plug
current control
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Withdrawn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
EP93203524A
Other languages
German (de)
English (en)
Inventor
Giuseppe Barbieri
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.)
B 80 SRL
Original Assignee
B 80 SRL
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 B 80 SRL filed Critical B 80 SRL
Publication of EP0602745A1 publication Critical patent/EP0602745A1/fr
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • glow plugs for Diesel engines form part of a system comprising the ignition circuit and the supply battery, whose durability and efficiency depend upon many factors; these include thermal shocks to which the two resistant coils of the glow plug are subjected due to the frequent and repeated ignitions, the high temperatures reached in the area of greatest incandescence, the termal difference between the maximum temperature and the post-heating temperature, as well as the high value of the absorbed current which the battery has to supply during the post-heating phase of the glow plug, particularly in cold areas or in the winter months, which may involve difficulties in starting up the same engine, and hence penalising or even damaging the same power supply battery.
  • the fore coil 16 performs a dual function, namely a normal heating function for the tip of the sheath 13, to bring it to a predetermined temperature value, and a second current control function in the first moments of warm-up; therefore it is made with a wire material suitable for withstanding to high temperatures but with minimum of resistivity at low temperatures, while the rear coil 14 performs solely the normal self-regulating function for the current and temperatures.
  • the innovative and functional features of the glow plug, with dual current control coil, according to the invention may be understood better with reference to the graph in Fig.5 wich represents, as a function of the time expressed in seconds, the supply voltage curve V, the curves T1 and T2 of the temperature at the tip, for a dual coil glow plug according to the invention (T1) and according to the prior art (T2), and the curves A1 and A2 of current absorption of the abovementioned two glow plugs respectively.
  • the comparison tests on the two glow plugs were performed maintaining the same conditions of voltage supply and ambient temperature, measuring the temperatures at the tip by means of an optical pyrometer and the currents absorbed by means of an amperometer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Resistance Heating (AREA)
EP93203524A 1992-12-18 1993-12-15 Bougie à incandescence à deux enroulements de commande pour des moteurs Diesel Withdrawn EP0602745A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI922903 1992-12-18
ITMI922903A IT1258675B (it) 1992-12-18 1992-12-18 Candela ad incandescanza con doppia spirale di controllo per motori diesel

Publications (1)

Publication Number Publication Date
EP0602745A1 true EP0602745A1 (fr) 1994-06-22

Family

ID=11364489

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93203524A Withdrawn EP0602745A1 (fr) 1992-12-18 1993-12-15 Bougie à incandescence à deux enroulements de commande pour des moteurs Diesel

Country Status (2)

Country Link
EP (1) EP0602745A1 (fr)
IT (1) IT1258675B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6037568A (en) * 1996-01-18 2000-03-14 Jidosha Kiki Co., Ltd. Glow plug for diesel engine with ptc control element disposed in small-diameter sheath section and connected to the distal end thereof
EP1055878A3 (fr) * 1999-05-27 2005-03-02 Denso Corporation Bougie à incandescence et son procédé de fabrication
JP2015152222A (ja) * 2014-02-14 2015-08-24 日本特殊陶業株式会社 グロープラグ

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2131437A5 (fr) * 1971-03-31 1972-11-10 Bosch
EP0240650A1 (fr) * 1986-01-16 1987-10-14 B 80 S.r.l. Bougie à incandescence à deux enroulements chauffants pour des moteurs Diesel
GB2216952A (en) * 1988-03-16 1989-10-18 Wellman Automotive Products Li Glow plugs
EP0365258A1 (fr) * 1988-10-19 1990-04-25 Wellman Automotive Products Ltd Bougie à incandescence
EP0392181A1 (fr) * 1989-04-08 1990-10-17 Robert Bosch Gmbh Bougie à incandescence

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2131437A5 (fr) * 1971-03-31 1972-11-10 Bosch
EP0240650A1 (fr) * 1986-01-16 1987-10-14 B 80 S.r.l. Bougie à incandescence à deux enroulements chauffants pour des moteurs Diesel
GB2216952A (en) * 1988-03-16 1989-10-18 Wellman Automotive Products Li Glow plugs
EP0365258A1 (fr) * 1988-10-19 1990-04-25 Wellman Automotive Products Ltd Bougie à incandescence
EP0392181A1 (fr) * 1989-04-08 1990-10-17 Robert Bosch Gmbh Bougie à incandescence

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6037568A (en) * 1996-01-18 2000-03-14 Jidosha Kiki Co., Ltd. Glow plug for diesel engine with ptc control element disposed in small-diameter sheath section and connected to the distal end thereof
EP1055878A3 (fr) * 1999-05-27 2005-03-02 Denso Corporation Bougie à incandescence et son procédé de fabrication
JP2015152222A (ja) * 2014-02-14 2015-08-24 日本特殊陶業株式会社 グロープラグ

Also Published As

Publication number Publication date
ITMI922903A1 (it) 1994-06-18
IT1258675B (it) 1996-02-27
ITMI922903A0 (it) 1992-12-18

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