EP0474707A1 - Dispositif de reglage de l'angle de came de moteurs a combustion interne - Google Patents

Dispositif de reglage de l'angle de came de moteurs a combustion interne

Info

Publication number
EP0474707A1
EP0474707A1 EP90908457A EP90908457A EP0474707A1 EP 0474707 A1 EP0474707 A1 EP 0474707A1 EP 90908457 A EP90908457 A EP 90908457A EP 90908457 A EP90908457 A EP 90908457A EP 0474707 A1 EP0474707 A1 EP 0474707A1
Authority
EP
European Patent Office
Prior art keywords
peak pressure
pressure position
value
ignition angle
controller
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Withdrawn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
EP90908457A
Other languages
German (de)
English (en)
Inventor
Siegfried Ellmann
Manfred Wier
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.)
Siemens AG
Original Assignee
Siemens 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 Siemens AG filed Critical Siemens AG
Publication of EP0474707A1 publication Critical patent/EP0474707A1/fr
Withdrawn legal-status Critical Current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
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/1455—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means by using a second control of the closed loop type
    • 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
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
    • F02P5/15—Digital data processing
    • F02P5/152—Digital data processing dependent on pinking
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

Definitions

  • the invention relates to a device for regulating the ignition angle for at least one cylinder of an internal combustion engine according to the preamble of claim 1 (US Pat. No. 4,727,842).
  • the ignition timing has a decisive influence on engine performance and fuel consumption. As the engine speed increases and the air / fuel ratio increases, the ignition timing must be adjusted to an increasing degree. Operating parameters such as engine load and engine temperature also influence the ignition timing or ignition angle. So far, a map has been determined on a motor test bench for the respective engine type by tests and optimized in subsequent driving tests according to predetermined criteria such as fuel consumption, exhaust gas and driving behavior. The ignition angle map thus determined was stored electronically, so that the ignition behavior of the engine remained unchanged throughout its life.
  • the ignition timing of an internal combustion engine is adjusted so that the peak pressure position following the ignition (crankshaft position at maximum combustion chamber pressure) at a predetermined setpoint or in a predetermined setpoint range, which is stored in an operating point-dependent map , occurs.
  • the invention has for its object to improve a device of the type mentioned that complex test bench and driving tests to optimize the ignition map are unnecessary.
  • Figure 1 shows a schematic representation of a cylinder
  • Figure 2 shows a block diagram of a device according to the invention.
  • FIG. 1 shows schematically the section through a cylinder of an internal combustion engine with a combustion chamber, a piston, with an inlet and outlet channel and the corresponding valves, a spark plug and a pressure sensor.
  • the spark plug is supplied with an ignition pulse Z at a connection point a via an ignition coil.
  • a combustion triggered by the ignition spark increases the pressure in the combustion chamber of the cylinder.
  • This pressure is detected and evaluated by the pressure sensor arranged in the combustion chamber. The evaluation takes place in such a way that the crankshaft position at which the maximum value or peak value of the combustion chamber pressure occurs is recorded and stored.
  • the relationship between combustion chamber pressure and crankshaft position is illustrated in a small, unspecified diagram in FIG. 1.
  • Figure 2 shows a block diagram of the device for controlling the ignition angle of a cylinder of an internal combustion engine.
  • a subtractor A is supplied with a setpoint PSoll for the peak pressure position via a line G.
  • An actual value PIst of the peak pressure position is fed to a further input of this subtracting element.
  • the corrected ignition angle Z is fed to the ignition coil via input a of the controlled system.
  • the actual value PIst of the peak pressure position appears, which is fed to the second input of the subtractor A.
  • the ignition angles Z for the ignitions of this cylinder which occur every 720 "KW and the peak pressure positions determined thereupon are fed to an identifier C and stored in this.
  • This identifier C is preferably constructed as a microprocessor and continuously determines this as” route identification " Ratio of change in peak pressure position to change in ignition angle of successive ignitions
  • a sliding scatter value is determined from a representative number of stored actual values PIst of the peak pressure position, the value of which determines the width of a measuring window which is built up in relation to the crank angle around the setpoint PSet of the peak pressure position .
  • the ratio value determined in the identifier C and a value explained later for the control quality of the control loop for the peak pressure position are fed to an assignor.
  • the allocator which essentially consists of an addressable memory RAM, outputs controller parameters which are fed to the PID controller B via a line D.
  • the tracking of the controller parameters carried out by means of the identification of the controlled system ignition angle peak pressure position thus enables an optimal transient response of the control loop.
  • This control circuit is used for rapid pilot control of the ignition angle, which is used when the measured actual value PIst of the peak pressure position is outside the measuring window or when a rapid change in output is required.
  • a comparatively slow controller (not shown) is activated, which optimizes the ignition angle with regard to maximum engine power at a given operating point.
  • a comparatively slow controller (not shown) is activated, which optimizes the ignition angle with regard to maximum engine power at a given operating point.
  • the indicated medium pressure i.e. the line integral pdV, is a measure for the delivered engine power. To determine it, the pressure signal recorded by the pressure sensor is multiplied by the volume-proportional crank angle position, summed up and evaluated after each working cycle.
  • the above-mentioned values for the controller quality are taken from a microprocessor ⁇ P, in which they are stored as a function of the manufacturer's data and operating parameters.
  • Such operating parameters are, for example, engine speed, engine load, air humidity, air temperature, air / fuel ratio, engine temperature, etc.
  • Manufacturer data means such information that, for example under certain operating conditions, such as full load or acceleration, the air / fuel ratio a certain value, for example 0.9.
  • the microprocessor ⁇ P has a further map, in which the setpoints PSoll for the peak pressure position are also stored, depending on the operating parameters mentioned. These are fed to the subtractor A via a line G.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Electrical Control Of Ignition Timing (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

Un dispositif utilise pour régler l'angle de came d'au moins un cylindre d'un moteur à combustion interne un régulateur de la valeur maximale de la pression dans la chambre de combustion, par rapport à l'angle de vilebrequin, selon un procédé d'optimisation de l'angle de came qui permet d'obtenir une pression maximale dans la chambre de combustion, avec un réglage précis des paramètres de réglage en fonction du rapport entre la variation de la pression maximale et la variation de l'angle de came, ainsi qu'un champ caractéristique adaptatif des valeurs de consigne de la valeur maximale de pression enregistré dans un microprocesseur.
EP90908457A 1989-06-01 1990-06-01 Dispositif de reglage de l'angle de came de moteurs a combustion interne Withdrawn EP0474707A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3917906A DE3917906A1 (de) 1989-06-01 1989-06-01 System zur einstellung des zuendwinkels einer brennkraftmaschine
DE3917906 1989-06-01

Publications (1)

Publication Number Publication Date
EP0474707A1 true EP0474707A1 (fr) 1992-03-18

Family

ID=6381865

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90908457A Withdrawn EP0474707A1 (fr) 1989-06-01 1990-06-01 Dispositif de reglage de l'angle de came de moteurs a combustion interne

Country Status (4)

Country Link
EP (1) EP0474707A1 (fr)
JP (1) JPH04501903A (fr)
DE (1) DE3917906A1 (fr)
WO (1) WO1990015244A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10200946B4 (de) * 2002-01-12 2005-11-17 Bayerische Motoren Werke Ag Adaptive Vorsteuerung des Zündzeitpunkts für Brennkraftmaschinen mit Klopfregelung
FR3057303B1 (fr) 2016-10-07 2019-10-11 Renault S.A.S Procede de maximisation d'un couple moteur

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481925A (en) * 1983-06-20 1984-11-13 General Motors Corporation Internal combustion engine spark timing control including peak combustion sensor
JPS60190669A (ja) * 1984-03-10 1985-09-28 Mazda Motor Corp エンジンの点火時期制御装置
EP0203617B1 (fr) * 1985-05-30 1991-09-04 Honda Giken Kogyo Kabushiki Kaisha Système de commande de l'avance à l'allumage pour moteur à combustion interne
JPS61275578A (ja) * 1985-06-25 1986-12-05 Honda Motor Co Ltd 内燃エンジンの点火時期制御装置
JPS62195463A (ja) * 1986-02-19 1987-08-28 Honda Motor Co Ltd 内燃機関の点火時期制御装置
JPS6419174A (en) * 1987-07-13 1989-01-23 Nissan Motor Control device for ignition timing of internal combustion engine
JPS6483856A (en) * 1987-09-24 1989-03-29 Nissan Motor Ignition timing controller for internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO9015244A1 *

Also Published As

Publication number Publication date
JPH04501903A (ja) 1992-04-02
WO1990015244A1 (fr) 1990-12-13
DE3917906A1 (de) 1990-12-06

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