FR2441738A1 - Ignition system for IC engine - uses pulsed laser beam of appropriate frequency focussed at point in combustion chamber by lens system - Google Patents

Ignition system for IC engine - uses pulsed laser beam of appropriate frequency focussed at point in combustion chamber by lens system

Info

Publication number
FR2441738A1
FR2441738A1 FR7927983A FR7927983A FR2441738A1 FR 2441738 A1 FR2441738 A1 FR 2441738A1 FR 7927983 A FR7927983 A FR 7927983A FR 7927983 A FR7927983 A FR 7927983A FR 2441738 A1 FR2441738 A1 FR 2441738A1
Authority
FR
France
Prior art keywords
combustion chamber
pulsed laser
fuel
engine
laser beam
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.)
Granted
Application number
FR7927983A
Other languages
French (fr)
Other versions
FR2441738B3 (en
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.)
Airbus Defence and Space GmbH
Original Assignee
Messerschmitt Bolkow Blohm AG
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 Messerschmitt Bolkow Blohm AG filed Critical Messerschmitt Bolkow Blohm AG
Publication of FR2441738A1 publication Critical patent/FR2441738A1/en
Application granted granted Critical
Publication of FR2441738B3 publication Critical patent/FR2441738B3/fr
Granted legal-status Critical Current

Links

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
    • F02P23/00—Other ignition
    • F02P23/04—Other physical ignition means, e.g. using laser rays

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

The ignition system uses a beam of pulsed radiation focussed at a point inside the combustion chamber and having a frequency selected for the absorption characteristics of the fuel being ignited. The beam enters the combustion chamber from the outside at a relatively low intensity. Lenses then focus the beam. The radiation source is a pulsed laser. If the fuel is isopropyl nitrate or a liquid fuel with similar absorption characteristics then a ruby laser is used with an optical device to double its wavelength. The condenser lens (18) has a refractive index roughly equal to that of the fuel.
FR7927983A 1978-11-15 1979-11-13 Ignition system for IC engine - uses pulsed laser beam of appropriate frequency focussed at point in combustion chamber by lens system Granted FR2441738A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782849458 DE2849458C2 (en) 1978-11-15 1978-11-15 Ignition system with a radiation source arranged outside the combustion chamber

Publications (2)

Publication Number Publication Date
FR2441738A1 true FR2441738A1 (en) 1980-06-13
FR2441738B3 FR2441738B3 (en) 1981-08-21

Family

ID=6054679

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7927983A Granted FR2441738A1 (en) 1978-11-15 1979-11-13 Ignition system for IC engine - uses pulsed laser beam of appropriate frequency focussed at point in combustion chamber by lens system

Country Status (2)

Country Link
DE (1) DE2849458C2 (en)
FR (1) FR2441738A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290154A2 (en) * 1987-04-27 1988-11-09 The University Of Tennessee Research Corporation Gas turbine engine photon ignition system
GB2376984A (en) * 2001-06-26 2002-12-31 Kevin Frank Medcalf CPU-controlled pulsed laser ignition system

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5728872A (en) * 1980-07-30 1982-02-16 Nissan Motor Co Ltd Laser type engine ignition device
DE3400034A1 (en) * 1984-01-03 1985-07-11 Herbert 5000 Köln Kaniut INTERNAL COMBUSTION ENGINE WITH LIGHT BEAM IGNITION
AT2623U1 (en) * 1998-03-24 1999-01-25 Avl List Gmbh INTERNAL COMBUSTION ENGINE
AT501297B8 (en) * 2005-05-23 2007-02-15 Ge Jenbacher Gmbh & Co Ohg COMBUSTION ENGINE
DE102007015036B4 (en) * 2007-03-29 2008-11-20 Multitorch Gmbh Laser ignition for gas mixtures
DE102007046647A1 (en) 2007-09-28 2009-04-02 Robert Bosch Gmbh Method for operating a laser as an ignition device of an internal combustion engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2207392B2 (en) * 1972-02-17 1979-06-13 Robert Bosch Gmbh, 7000 Stuttgart Ignition device for internal combustion engine - using laser beam focused on disc with black, high m.pt. metallic layer
US3861371A (en) * 1973-12-10 1975-01-21 Joseph Gamell Ind Inc Ignition system for engine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0290154A2 (en) * 1987-04-27 1988-11-09 The University Of Tennessee Research Corporation Gas turbine engine photon ignition system
EP0290154A3 (en) * 1987-04-27 1992-07-01 The University Of Tennessee Research Corporation Gas turbine engine photon ignition system
GB2376984A (en) * 2001-06-26 2002-12-31 Kevin Frank Medcalf CPU-controlled pulsed laser ignition system

Also Published As

Publication number Publication date
DE2849458C2 (en) 1983-10-20
FR2441738B3 (en) 1981-08-21
DE2849458A1 (en) 1980-05-22

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