EP0018251B1 - Procédé de contrôle de calage d'un allumeur de véhicule automobile - Google Patents

Procédé de contrôle de calage d'un allumeur de véhicule automobile Download PDF

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Publication number
EP0018251B1
EP0018251B1 EP19800400408 EP80400408A EP0018251B1 EP 0018251 B1 EP0018251 B1 EP 0018251B1 EP 19800400408 EP19800400408 EP 19800400408 EP 80400408 A EP80400408 A EP 80400408A EP 0018251 B1 EP0018251 B1 EP 0018251B1
Authority
EP
European Patent Office
Prior art keywords
advance
speed
engine
rotation
function
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
Application number
EP19800400408
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0018251A1 (fr
Inventor
Pierre Heritier Best
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.)
Ducellier et Cie
Original Assignee
Ducellier et Cie
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 Ducellier et Cie filed Critical Ducellier et Cie
Publication of EP0018251A1 publication Critical patent/EP0018251A1/fr
Application granted granted Critical
Publication of EP0018251B1 publication Critical patent/EP0018251B1/fr
Expired 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
    • F02P17/00—Testing of ignition installations, e.g. in combination with adjusting; Testing of ignition timing in compression-ignition engines
    • F02P17/02—Checking or adjusting ignition timing
    • F02P17/04—Checking or adjusting ignition timing dynamically

Definitions

  • the known methods are essentially of two types: static timing, that is to say engine stopped, or dynamic timing, that is to say engine in operation.
  • the static stalling process is used when the additional means made available to the operator are very limited and limited to the possession of a device enabling the opening or closing of a contact of the igniter to be observed.
  • the engine being placed in the top dead center of the first cylinder, the manipulation consists in orienting the igniter in order to place itself at the limit of the opening of the contacts of the contact grains of the igniter breaker, this result being observed at using the device allowing to observe the opening or closing previously connected.
  • the dynamic setting process is the most traditionally used.
  • the work consists in orienting the igniter until a mark placed on the flywheel coincides with a fixed mark, the whole being lit by the lamp of a strobe being controlled.
  • the ignition signals (or tops) requesting the spark plug of the first cylinder to be able to carry out this operation, the engine must first be brought to the speed appropriate to the advance value existing between the two marks.
  • the object of the present invention is to increase the timing accuracy of any type of igniter with control of the mechanical or magnetic ignition signal comprising a centrifugal advance system as a function of the rotation speed of the engine and for this purpose relates a timing control method of an internal combustion engine igniter for a motor vehicle, ignition type of the control type, of the ignition point, mechanical or magnetic, comprising an ignition advance device as a function of the speed of rotation of the engine such as using metallic masses driven in rotation by the axis of the igniter and subjected to the reaction of springs which act in traction, characterized in that from a signal of the ignition and of the engine rotation speed is produced a voltage U1 as a function of the effective advance of the igniter to be checked, which voltage is then compared to a reference voltage U3, which is a function of a reference advance, developed from vi tesse of rotation of the engine and of coordinates of two points of an advance curve of a type chosen as a function of the igniter to be checked, said comparison being visualized using signals, which indicate the direction
  • the mark 1 indicates the igniter mounted on a vehicle engine
  • the mark 2 indicates a speed sensor which takes the speed of the engine on which the igniter 1 is mounted.
  • the signals from the sensor 2 and from the igniter 1 are transformed by a device 3 into a voltage U1 as a function of the true advance of the igniter considered.
  • the signals from the sensor 2 are transformed into a voltage U2 by means of a transformer4; this voltage U2 is then exploited using an element 5 into which are inserted coordinates, coming from a storage element 6, of two points M and N defining a segment corresponding to a portion of the curve of the ideal advance, surrounding a selected speed of rotation of the engine for said igniter 1 considered.
  • This element 5 then develops a voltage U3 called the reference voltage.
  • the voltages U1 and U3 are then compared using a comparator7.
  • the signal from comparator 7 is then used to control the display of the offset between the true advance of the igniter 1 and the ideal advance created.
  • This visualization is carried out using an element 8, which can, as necessary, be only information using indicator lights 8 indicating the direction and the order of magnitude of said offset or more precise and give a value real difference between the true advance and the ideal advance for a small difference between these two advances.
  • Such a method essentially consists in eliminating the influence of the fluctuations in the speed of rotation of the motor on the reading of the comparison during the control.
  • the adjustment point will therefore be chosen in zone C of FIG. 2 and may be processed by the user by a method of comparison of a reference voltage U3 representative of the advance to be obtained and of a voltage U1 reflecting the 'true advance.
  • the reference voltage will therefore be defined on the one hand by the speed of rotation of the motor and on the other hand by the coordinates of two points M and N delimiting the portion of curve of said setpoint voltage (see fig. 2).
  • a galvanometer q can take up the central zone corresponding to the indicator 8a in order to increase the precision of the setting of the setting.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
EP19800400408 1979-04-12 1980-03-27 Procédé de contrôle de calage d'un allumeur de véhicule automobile Expired EP0018251B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7909263 1979-04-12
FR7909263A FR2453987A1 (fr) 1979-04-12 1979-04-12 Procede de controle de calage d'un allumeur de vehicule automobile

Publications (2)

Publication Number Publication Date
EP0018251A1 EP0018251A1 (fr) 1980-10-29
EP0018251B1 true EP0018251B1 (fr) 1982-04-07

Family

ID=9224253

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19800400408 Expired EP0018251B1 (fr) 1979-04-12 1980-03-27 Procédé de contrôle de calage d'un allumeur de véhicule automobile

Country Status (5)

Country Link
EP (1) EP0018251B1 (show.php)
DE (1) DE3060274D1 (show.php)
ES (1) ES490452A0 (show.php)
FR (1) FR2453987A1 (show.php)
PT (1) PT71083A (show.php)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1467078A (en) * 1973-06-01 1977-03-16 Scans Associates Inc Method and apparatus for determining the average timing angle in internal combustion engines
FR2294337A1 (fr) * 1974-12-10 1976-07-09 Peugeot & Renault Appareil permettant le reglage de l'avance a l'allumage

Also Published As

Publication number Publication date
FR2453987B1 (show.php) 1983-12-16
PT71083A (fr) 1980-05-01
EP0018251A1 (fr) 1980-10-29
ES8101203A1 (es) 1980-12-01
ES490452A0 (es) 1980-12-01
FR2453987A1 (fr) 1980-11-07
DE3060274D1 (en) 1982-05-19

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