EP0318350A1 - Verfahren und Vorrichtung zur Steuerung der Vorheizung in einer Dieselmaschine - Google Patents

Verfahren und Vorrichtung zur Steuerung der Vorheizung in einer Dieselmaschine Download PDF

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Publication number
EP0318350A1
EP0318350A1 EP88402825A EP88402825A EP0318350A1 EP 0318350 A1 EP0318350 A1 EP 0318350A1 EP 88402825 A EP88402825 A EP 88402825A EP 88402825 A EP88402825 A EP 88402825A EP 0318350 A1 EP0318350 A1 EP 0318350A1
Authority
EP
European Patent Office
Prior art keywords
supply
engine
plugs
group
cylinders
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
EP88402825A
Other languages
English (en)
French (fr)
Other versions
EP0318350B1 (de
Inventor
Patrick Gidoin
Didier Gilbert
Michel Louis Gabadou
Bernard Bonhomme
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.)
Renault SA
Original Assignee
Renault SA
Regie Nationale des Usines Renault
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 Renault SA, Regie Nationale des Usines Renault filed Critical Renault SA
Publication of EP0318350A1 publication Critical patent/EP0318350A1/de
Application granted granted Critical
Publication of EP0318350B1 publication Critical patent/EP0318350B1/de
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
    • F02P19/021—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 characterised by power delivery controls
    • F02P19/022—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 characterised by power delivery controls using intermittent current supply
    • 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
    • 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
    • F02P19/021—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 characterised by power delivery controls
    • F02P19/023—Individual control of the glow plugs

Definitions

  • the invention relates to a method for controlling the supply of glow plugs to a diesel engine. It is well known that a diesel engine requires a certain temperature for the ignition of the air-fuel mixture, with spontaneous combustion. When the engine is cold, the compression of the mixture alone does not allow the ignition temperature to be reached and the mixture must then be preheated by means of glow plugs.
  • the glow plugs fitted to diesel engines are electronically controlled so as to regulate the duration of preheating. Thanks to this electronic control, it is even planned to power these spark plugs during engine operation after starting in order to improve combustion, thus avoiding unstable rpm and rising smoke while reducing noise.
  • This post-heating of the mixture is obtained by the continuous supply of the candles, which is however cut off, either when the temperature of the candles exceeds a threshold, or by a time delay.
  • the object of the present invention is to provide a method for controlling the glow plugs of a diesel engine incorporating post-heating without problem of plug resistance with a constant electrical balance, intended to reduce smoke emissions when cold and improve the regularity of the engine speed.
  • a control device for these glow plugs comprises an electronic unit 3 powered by the vehicle battery and comprising a microprocessor circuit 4 controlling power relays 40 intended to direct the power coming from the battery to the spark plugs 2i.
  • the information on the engine water temperature is indicated to the microprocessor 4 by a thermal switch 5.
  • the engine load information is also delivered to the microprocessor 4 by the position of the load lever 6 of the pump injecting the fuel into the engine cylinders 1.
  • a warning light 8 indicates that the glow plugs 2i are on or off.
  • the candle feed control method according to the invention has three main phases, as shown in the operating diagram in FIG. 2.
  • the first conventional phase of glow plug preheating takes place between the instant in which the engine is brought into contact and the instant td of starting and its duration T1 is controlled by the engine compartment temperature.
  • the water thermal switch 5 closes if the water temperature reaches a given threshold.
  • the extinction of the preheating warning light 8 after a period of T0, indicates that the vehicle is ready to start.
  • the glow plugs remain under tension in order to maintain the temperature at a value essential for the initiation of the combustion of air-fuel mixture.
  • all the glow plugs are fed simultaneously.
  • the second phase of the control process takes place from the start of the engine, from time td and for a period T2 fixed, counted from the instant tD at the end of the start sequence.
  • the method comprises a third phase of controlling the supply of the N candles, alternately by group of n candles so that the product of the number of groups of candles, ie N / n , by the feed-in duty cycle of each group, either R, or equal to unity: NOT not x R 1
  • the method according to the invention can control the supply of the spark plugs, one after the other with a feed cyclic ratio equal to 1/4 or else two groups of two candles each, one after the other, with a duty cycle of 1/2.
  • the control process can control the supply of the glow plugs in three different ways, while keeping a constant electrical balance: - either candle by candle with a feed cyclic ratio equal to 1/6, - are in groups of two candles with a duty cycle of 1/3, - are in groups of 3 candles with a duty cycle of 1/2.
  • This third phase of controlling the alternating supply of the N spark plugs has a duration referenced T3 in FIG. 2, which is a function either of the engine water temperature or of the engine load known by the position of the load lever fuel injection pump.
  • the supply of spark plugs according to the invention is also subject to the water temperature ⁇ of the engine so that, if it exceeds a maximum threshold, 60 ° C. for example, the supply of spark plugs post-heating is permanently cut to prevent deterioration.
  • Thermocon tact 5 closes as soon as this maximum temperature ⁇ is reached.
  • a definitive interruption of the alternating post-heating phase is provided by a maximum use delay, of duration TMAX from the instant tD of end of start sequence. If, after starting, the engine stalls, there is system protection against discharging the battery.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combustion Methods Of Internal-Combustion Engines (AREA)
EP19880402825 1987-11-24 1988-11-10 Verfahren und Vorrichtung zur Steuerung der Vorheizung in einer Dieselmaschine Expired - Lifetime EP0318350B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8716279 1987-11-24
FR8716279A FR2623565B1 (fr) 1987-11-24 1987-11-24 Procede de commande d'alimentation des bougies de prechauffage d'un moteur diesel

Publications (2)

Publication Number Publication Date
EP0318350A1 true EP0318350A1 (de) 1989-05-31
EP0318350B1 EP0318350B1 (de) 1993-02-10

Family

ID=9357110

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880402825 Expired - Lifetime EP0318350B1 (de) 1987-11-24 1988-11-10 Verfahren und Vorrichtung zur Steuerung der Vorheizung in einer Dieselmaschine

Country Status (4)

Country Link
EP (1) EP0318350B1 (de)
DE (1) DE3878414T2 (de)
ES (1) ES2037863T3 (de)
FR (1) FR2623565B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689569A1 (fr) * 1992-04-07 1993-10-08 Renault Perfectionnements aux moteurs diésel.
WO2008090160A1 (de) * 2007-01-25 2008-07-31 Continental Automotive Gmbh Verfahren zum steuern eines glühsystems für dieselmotoren

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19922958C2 (de) * 1999-05-19 2003-10-30 Daimler Chrysler Ag Steuervorrichtung

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1486724A (fr) * 1965-07-14 1967-06-30 Bosch Gmbh Robert Installation électrique pour échauffer les bougies à incandescence d'un moteur à combustion interne à plusieurs cylindres
DE2610905A1 (de) * 1976-03-16 1977-09-22 Karl Dr Fracke Blitz-gluehzuendung fuer ottomotoren
FR2568630A1 (fr) * 1984-08-03 1986-02-07 Bosch Gmbh Robert Procede pour la commande et/ou la regulation d'un moteur a combustion interne
US4635594A (en) * 1984-02-10 1987-01-13 Ngk Spark Plug Co., Ltd. Method of applying electric current to glow plugs and device therefor
US4639871A (en) * 1983-02-03 1987-01-27 Nippondenso Co., Ltd. Glow plug heating control apparatus for a diesel engine
EP0288085A2 (de) * 1987-04-24 1988-10-26 BERU Ruprecht GmbH & Co. KG Verfahren und Vorrichtung zum Schnellaufheizen einer elektrischen Heizvorrichtung

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1486724A (fr) * 1965-07-14 1967-06-30 Bosch Gmbh Robert Installation électrique pour échauffer les bougies à incandescence d'un moteur à combustion interne à plusieurs cylindres
DE2610905A1 (de) * 1976-03-16 1977-09-22 Karl Dr Fracke Blitz-gluehzuendung fuer ottomotoren
US4639871A (en) * 1983-02-03 1987-01-27 Nippondenso Co., Ltd. Glow plug heating control apparatus for a diesel engine
US4635594A (en) * 1984-02-10 1987-01-13 Ngk Spark Plug Co., Ltd. Method of applying electric current to glow plugs and device therefor
FR2568630A1 (fr) * 1984-08-03 1986-02-07 Bosch Gmbh Robert Procede pour la commande et/ou la regulation d'un moteur a combustion interne
EP0288085A2 (de) * 1987-04-24 1988-10-26 BERU Ruprecht GmbH & Co. KG Verfahren und Vorrichtung zum Schnellaufheizen einer elektrischen Heizvorrichtung

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2689569A1 (fr) * 1992-04-07 1993-10-08 Renault Perfectionnements aux moteurs diésel.
EP0565431A1 (de) * 1992-04-07 1993-10-13 Regie Nationale Des Usines Renault S.A. Verbesserungen an Dieselbrennkraftmaschinen
WO2008090160A1 (de) * 2007-01-25 2008-07-31 Continental Automotive Gmbh Verfahren zum steuern eines glühsystems für dieselmotoren

Also Published As

Publication number Publication date
FR2623565A1 (fr) 1989-05-26
FR2623565B1 (fr) 1990-03-23
DE3878414T2 (de) 1993-07-29
EP0318350B1 (de) 1993-02-10
ES2037863T3 (es) 1993-07-01
DE3878414D1 (de) 1993-03-25

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