EP0500830A1 - Allumage electronique pour moteurs a combustion interne - Google Patents

Allumage electronique pour moteurs a combustion interne

Info

Publication number
EP0500830A1
EP0500830A1 EP91914260A EP91914260A EP0500830A1 EP 0500830 A1 EP0500830 A1 EP 0500830A1 EP 91914260 A EP91914260 A EP 91914260A EP 91914260 A EP91914260 A EP 91914260A EP 0500830 A1 EP0500830 A1 EP 0500830A1
Authority
EP
European Patent Office
Prior art keywords
ignition
spark
capacitive
discharge
coil
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
EP91914260A
Other languages
German (de)
English (en)
Other versions
EP0500830B1 (fr
Inventor
Gianni Regazzi
Gianni Venturoli
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.)
Ducati Energia SpA
Original Assignee
Ducati Energia SpA
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 Ducati Energia SpA filed Critical Ducati Energia SpA
Publication of EP0500830A1 publication Critical patent/EP0500830A1/fr
Application granted granted Critical
Publication of EP0500830B1 publication Critical patent/EP0500830B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02P3/00—Other installations
    • F02P3/02—Other installations having inductive energy storage, e.g. arrangements of induction coils
    • 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
    • F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
    • F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
    • 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
    • F02P1/00—Installations having electric ignition energy generated by magneto- or dynamo- electric generators without subsequent storage
    • F02P1/08—Layout of circuits
    • F02P1/086—Layout of circuits for generating sparks by discharging a capacitor into a coil circuit
    • 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
    • F02P9/00—Electric spark ignition control, not otherwise provided for
    • F02P9/002—Control of spark intensity, intensifying, lengthening, suppression
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Definitions

  • the object of the present invention is an electronic ignition for internal-combustion engines.
  • the invention is particularly, even if not exclusively, applied as an ignition system for olio cycle small size two-stroke internal- combustion engines, particularly for motorcycles and mopeds, not excluding its application on small internal-combustion engines destined to other uses, like chain saws, bush mower, mowers, portable generators, etc.
  • Capacitive knocking ignitions and inductive knocking ignitions depending on the use of the stored energy coming from a capacitor or from an inductance. Such groups also get marked out for the very different characteristics and performances they have one from the other.
  • the capacitive knocking ignitions having the possibility of utilizing higher spark currents and high tensions with higher uprisings, are particularly utilized in engines where a good starting isapplicationeed, even if there is the problem of fouling the spark plugs (originated for example, by the presence of oil in the fuel mixture of the two stroke engines).
  • inductive knocking engines with the possibility of using longer life sparks, arc particularly utilized in the motors in which antipollution norms should be respected, such norms imposing the use of particularly lean air-gasoline mixes, limiting the output of unburnt hydrocarbons.
  • the ideal electronic ignition therefore is the one that, even when disposing of high peak powers and of high tensions with fast uprisings, also keeps high long lasting of sparks.
  • FIG. 1 represents a schematic view of a general circuital system
  • connection system of the ignition coil is
  • the feeding coil is indicated (obviously in 1 2 the generators the feeding coils can be more than one and they 1 3 make part of a stator group around which a flywheel with North- 1 4 South magnetic sectors turns around, as for example illustrated in 1 5 the EP-A-88110152.1 corresponding to the IT-A-83445/87, or even in 1 6 the version described in IT-A-83393/90 in the name of the applicant 7 and of other possible innumerable applicants).
  • the ignition control is supplied by means of a Pick-Up for example 9 according to the solution proposed by the applicant by means of the 0 PCT WO-89/05035, or by means of an electronic elaboration system 1 directly from the feeding coil/s of the applicant IT-A-83417/90 with 2 the advantageous solution that presents however the inconvenient 3 of a quite short ignition (with all the capacitive knocking 4 ignitions).
  • the start command is given to the gate (G) of the thyristor, allowing the discharge of the capacitor Cl on the primary winding Lp.
  • Said start command comes from a rotoric position detector that sends electric impulses (P.U.) Fig.l , or directly from the feed coil/s Ba of said electric energy generator set ( Figures 3-4).
  • the discharge current flowing from Cl , across the started thyristor (SCR), and the primary coil (Lp) transfers the energy from such condenser Cl to said primary winding Lp, exhausting itself on diode D2.
  • the power transmitted to the primary coil Lp is transferred to the secondary Ls, to which il is coupled where a high potential is inducted such to starl a spark on the ignition plug Ca.
  • the spark current initially flows through Dl, polarized now directly by the positive potential induced on the secondary coil Ls, and through the thyristor getting started towards ground.
  • FIG.3 An example of a concrete application can be made with the circuit of Fig.3 or Fig.4.
  • the second utilizing a inductor-capacitor in reference at IT-A-83393/90 of the applicant and regarding a capacitive knocking ignition system, characterized by the fact that the piloting of the thyristor is carried out on its cathode through a branch with high impedance with the gate of the thyristor electrically connected to ground.
  • the second diagram indicates the behavior of the maintenance tension "Vm" that after an initial starling peak of the spark remains constant around 600-700 V.

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)

Abstract

Système d'allumage par détonation en régime capacitif pour les moteurs à combustion interne, que l'on peut associer à un volant produisant une énergie électrique, et qui utilise un dispositif à décharge à condensateur (C1) (thyristor SCR) pour émettre une étincelle dans une bougie d'allumage correspondante (Ca), se caractérisant par le fait que la bobine secondaire (Ls) a l'une de ses extrémités électriquement reliée à la bobine d'alimentation (Ba) dudit générateur et l'autre extrémité reliée à la bougie d'allumage (Ca) pour: en premier lieu avoir une étincelle sur la bougie d'allumage (Ca) dérivée de la décharge dudit dispositif à condensateur (C1) sur l'enroulement primaire (Lp), provoquant des tensions à haut potentiel sur ledit enroulement secondaire (Ls) et pour faire en sorte que la bobine d'alimentation (Ba) dudit générateur d'énergie électrique fournisse en outre un courant directement à la bobine secondaire (Ls) pour prolonger la durée de l'étincelle.
EP91914260A 1990-09-07 1991-07-24 Allumage electronique pour moteurs a combustion interne Expired - Lifetime EP0500830B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT8346690 1990-09-07
IT08346690A IT1244585B (it) 1990-09-07 1990-09-07 Accensione elettronica per motori a combustione interna
PCT/IT1991/000063 WO1992004540A1 (fr) 1990-09-07 1991-07-24 Allumage electronique pour moteurs a combustion interne

Publications (2)

Publication Number Publication Date
EP0500830A1 true EP0500830A1 (fr) 1992-09-02
EP0500830B1 EP0500830B1 (fr) 2000-10-04

Family

ID=11322297

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91914260A Expired - Lifetime EP0500830B1 (fr) 1990-09-07 1991-07-24 Allumage electronique pour moteurs a combustion interne

Country Status (7)

Country Link
EP (1) EP0500830B1 (fr)
AT (1) ATE196792T1 (fr)
AU (1) AU8315891A (fr)
DE (1) DE69132437T2 (fr)
ES (1) ES2152219T3 (fr)
IT (1) IT1244585B (fr)
WO (1) WO1992004540A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7622753B2 (en) * 2005-08-31 2009-11-24 Stmicroelectronics S.A. Ignition circuit
WO2013118151A2 (fr) * 2012-02-09 2013-08-15 Sedemac Mechatronics Pvt Ltd Système et procédé de calage de l'allumage d'un moteur à combustion interne

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1397565A (en) * 1971-08-17 1975-06-11 Plessey Co Ltd Spark ignition systems
US4515139A (en) * 1983-10-21 1985-05-07 Outboard Marine Corporation Low moisture sensitive ignition
US4620521A (en) * 1984-07-18 1986-11-04 Colt Industries Operating Corp. Modular, programmable high energy ignition system
US4892079A (en) * 1987-06-17 1990-01-09 Mitsubishi Denki Kabushiki Kaisha Magnetogenerator
KR890702227A (ko) * 1987-11-18 1989-12-23 루시오 벤투리니 제어 임피던스를 구비한 권선 커패시터 장치(capacitor divice)

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9204540A1 *

Also Published As

Publication number Publication date
ATE196792T1 (de) 2000-10-15
DE69132437T2 (de) 2001-06-13
IT9083466A1 (it) 1992-03-07
IT9083466A0 (it) 1990-09-07
DE69132437D1 (de) 2000-11-09
EP0500830B1 (fr) 2000-10-04
AU8315891A (en) 1992-03-30
WO1992004540A1 (fr) 1992-03-19
ES2152219T3 (es) 2001-02-01
IT1244585B (it) 1994-08-02

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