EP1381766A1 - Procede de detection de phases par modification lambda sur une ou plusieurs cylindres - Google Patents

Procede de detection de phases par modification lambda sur une ou plusieurs cylindres

Info

Publication number
EP1381766A1
EP1381766A1 EP02729810A EP02729810A EP1381766A1 EP 1381766 A1 EP1381766 A1 EP 1381766A1 EP 02729810 A EP02729810 A EP 02729810A EP 02729810 A EP02729810 A EP 02729810A EP 1381766 A1 EP1381766 A1 EP 1381766A1
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
phase position
cylinders
cylinder
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
EP02729810A
Other languages
German (de)
English (en)
Other versions
EP1381766B1 (fr
Inventor
Wolfgang Boerkel
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1381766A1 publication Critical patent/EP1381766A1/fr
Application granted granted Critical
Publication of EP1381766B1 publication Critical patent/EP1381766B1/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting

Definitions

  • sensors are used which continuously scan a sensor wheel connected to the crankshaft in a rotationally fixed manner.
  • Gear rings are usually used for this purpose, which have an irregularity at a point assigned to the top dead center (TDC) of one of the pistons of the machine.
  • the transmitter only generates a clear signal for rotation angles assigned to ignition or injection processes if such a process has to be triggered each time a rotation angle is reached.
  • the work cycle extends over 720 ° crank angle, which means that two signals corresponding to top dead center (TDC) occur.
  • DE 41 22 786 AI relates to a method for identifying the rotation angle of an internal combustion engine associated with an ignition or injection process.
  • the working cycle of the internal combustion engine extends over at least two revolutions of its output shaft. Ignition or injection processes are initiated, whereupon an actual reaction of the machine to these ignition or injection processes is ascertained and is compared with a target reaction also for ignition and injection processes taking place at the assigned angle of rotation.
  • EP 0 826 099 B1 relates to a method for detecting the phase position of the cylinders of a multi-cylinder four-stroke internal combustion engine.
  • a multi-cylinder internal combustion engine is equipped with an ignition system for the individual control of each cylinder and comprises a sensor for generating a signal which allows the passage of the piston of a reference cylinder of the internal combustion engine to be identified in a specific position.
  • a cycle of several steps is run through, first of all a fault being controlled in the reference cylinder and at a given moment which is associated with the passage of the piston of the reference cylinder in the predetermined position, that there is a variation in the operation of the engine.
  • the loading drive mode of the engine is observed and a possible variation of the operating mode resulting from the control of the fault in the reference cylinder is detected, and the instant of the sudden occurrence of the variation of the operating mode or a non-occurrence of a variation of the operating mode of the engine is determined.
  • the given moment of control of the fault is compared to the sensed moment of the sudden occurrence of the variation in the operation of the engine or the absence of a variation in the operation of the engine to derive the phase of the engine cycle in which the reference cylinder is in the certain position.
  • the phase of a cylinder of the internal combustion engine is recognized.
  • the control of the disturbance consists in that a modification of the ignition energy is controlled in comparison to a normal mode of operation, and that differently than by a complete interruption of the ignition control and that the possible variations resulting therefrom are recorded the operation of the engine is to detect a possible variation in the torque around a moment of the sudden occurrence of the variation in the torque.
  • No. 5,425,340 relates to a method for identifying cylinders for controlling an electronic injection system for an internal combustion engine, which can be used in a sequential multipoint injection system.
  • a crankshaft sensor is assigned to the crankshaft of the internal combustion engine and detects the passage of the top dead centers of each of the cylinders, as a result of which misfires can be detected.
  • the injection of fuel into a selected reference cylinder is prevented.
  • the occurrence of a misfire is then detected on this selected reference cylinder.
  • the time at which the fuel injection in the selected reference cylinder is interrupted is then compared with the time at which a misfire occurs at the selected reference cylinder.
  • the passage of the TDC is detected during the intake / compression stroke of the selected reference cylinder.
  • a signal sequence is then formed from which the cylinders of the internal combustion engine emerge which are in phase with the TDC signal. This signal sequence is generated at the point in time at which the intake / compression stroke TDC is detected and the combustion sequence is resumed in accordance with the ignition sequence of the internal combustion engine.
  • phase position of the cylinders of a multi-cylinder internal combustion engine is unknown, a phase position is assumed.
  • the assumed phase position can e.g. be the phase position of the crankshaft of the internal combustion engine, which it assumed when it was switched off.
  • the internal combustion engine is now started with double ignition output in the ignition and charge change TDC.
  • enrichment or emaciation takes place through a corresponding intervention in the mixture formation from fuel and intake air of the internal combustion engine on one or more cylinders.
  • the mixture of the selected cylinders is enriched or emaciated only to the extent that no misfires can occur and is limited to a definable period.
  • the sum ⁇ can be kept at the desired value during the intervention on the mixture formation in the selected cylinder or in the selected cylinders by suitable interventions, as a result of which the internal combustion engine emits almost optimal exhaust gas.
  • the enrichment or leaning of the mixture of the selected cylinder or the selected cylinders of the internal combustion engine merely represents a short-term, barely perceptible loss of comfort, which is significantly less than when the fuel injection on one of the cylinders of the internal combustion engine is hidden.
  • the intervention in the mixture formation takes place in suitable engine operating areas in which optimal detection is possible.
  • the loss of driving comfort is limited in these engine operating areas.
  • Suitable engine operating ranges for intervening in the mixture formation on a selected cylinder or on several selected cylinders of the internal combustion engine are those in which the speed of the internal combustion engine remains largely constant, no pronounced acceleration phases occur, i.e. in a partial load range of the internal combustion engine.
  • a constant ⁇ probe and corresponding evaluation algorithms in the engine control unit can be used, such as those used for single-cylinder ⁇ control.
  • Another advantage of the method proposed according to the invention is the fact that, in addition to the slightest loss of driving comfort, it can advantageously be used on internal combustion engines, whether V or in-line engines with even or odd numbers of cylinders.
  • phase generator defects are recognized directly, so that remedial routines can be used in accordance with the method proposed according to the invention.
  • the internal combustion engine is started on the basis of an assumed phase position.
  • This assumed phase position can correspond, for example, to the phase position that occurred when the internal combustion engine was switched off.
  • a multi-cylinder internal combustion engine can be started on the basis of this permanently stored information present in the engine management system. For example, in four-stroke internal combustion engines, be it 4-, 6- or 8-cylinder engines, an ignition output in TDC after the compression stroke and after the push-out stroke, thus a double ignition output.
  • phase position of the internal combustion engine assumed at the start is only checked when the internal combustion engine has reached a suitable operating range with regard to constant load, constant speed and reaching the engine operating temperature. This can occur both after some operating time of the internal combustion engine when idling or it can be an approximately stationary operating phase of the internal combustion engine.
  • the ⁇ control must also be ready for operation.
  • the method proposed according to the invention intervenes in the mixture formation on one or more selected reference cylinders in the direction of an enrichment of the mixture or its thinning.
  • the sum ⁇ control remains in operation during this intervention.
  • the cylinder or cylinders selected, on which e ' engages in the mixture formation with regard to leanness or enrichment is known.
  • the phase position assumed at the start of the internal combustion engine was incorrect. It can also be assumed that the phase position is assumed to be incorrect when the internal combustion engine starts, if the selected cylinder or cylinders has a small change in the air ratio ⁇ in the opposite direction as a result of the compensation.
  • the air ratio ⁇ of the cylinder offset by 360 ° crank angle to the selected cylinder can also be evaluated. If this cylinder offset by 360 ° to the selected reference cylinder has the generated ⁇ change, then the phase position assumed at the start of the internal combustion engine was wrong.
  • the use of the cylinder offset by 360 ° crank angle to the selected cylinder for the detection of ⁇ changes is only given on internal combustion engines with an even number of cylinders or an even number of cylinders per bank of V-engines, but most common four-stroke internal combustion engines are those with an even number of cylinders.
  • phase detection can be switched off if the assumed phase position and the detected phase position match, the detection is incorrect.
  • Phase position a re-or resynchronization on the internal combustion engine required.
  • Emergency operation with double ignition output can also be maintained at the end of the compression cycle or at the end of the push-out cycle. If the internal combustion engine is resynchronized or re-synchronized, the correctness of this synchronization should then be checked again before the double ignition output is switched off.
  • the test procedure can e.g. can be repeated any number of times after a preset timer has elapsed as soon as a driving situation suitable for carrying out the test procedure, i.e. a suitable part-load range of the internal combustion engine has been reached.
  • a driving situation suitable for carrying out the test procedure i.e. a suitable part-load range of the internal combustion engine has been reached.
  • the timer which can be included in the engine management system of the internal combustion engine, the period of time after which a redetermination of the phase detection can take place according to the method proposed according to the invention can be freely selected, i.e. the intervals between the individual detection processes for determining the phase position of the internal combustion engine are flexible and adaptable.
  • phase detection takes place on the internal combustion engine with previously failed detection of the phase position, this can be carried out both on the previously selected cylinders and on newly selected cylinders of the internal combustion engine.
  • the method proposed according to the invention can be carried out on the cylinders of the internal combustion engine until a clear statement regarding the phase position of the internal combustion engine can be made.
  • the method proposed according to the invention is based on the determination of changes in the air ratio by intervening in the mixture formation, be it leanness or enrichment, on a selected cylinder or on selected cylinders of the internal combustion engine instead of blanking out the fuel injection, the internal combustion engine can have almost normal exhaust gas behavior be operated with regard to the sum ⁇ value. In contrast to an injection suppression, they last loss of comfort within narrow limits.
  • the method proposed according to the invention for phase detection on a multi-cylinder internal combustion engine with a failed phase generator can be used on internal combustion engines with an even or odd number of cylinders and permits reliable phase detection since the occurrence of several events is observed. The reliability of the information obtained about the phase position is thus very high, and the vehicle cannot remain lying down due to a failed phase sensor.

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)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

L'invention concerne un procédé de détection de phase sur un moteur à combustion à cylindres multiples, à allumage commandé, qui comporte un nombre de cylindres pair ou impair et est actionné au moyen d'un système de gestion du moteur. Le cycle de travail du moteur à combustion interne s'étend au moins sur deux révolutions. Ledit moteur à combustion interne est lancé, en cas de position de phase inconnue, par hypothèse d'une position de phase à double sortie d'allumage. Une intervention sur la formation du mélange en termes d'appauvrissement ou d'enrichissement du mélange est effectuée sur un ou plusieurs cylindres du moteur à combustion interne. Sur la base de la détection et des modifications du rapport de l'air μ, la position de phase présumée est vérifiée ou réfutée. En cas de position de phase réfutée, un mode de secours du moteur à combustion interne à double sortie d'allumage est maintenu ou synchronisé de manière nouvelle ou est resynchronisé.
EP02729810A 2001-04-04 2002-03-21 Procede de detection de phases par modification lambda sur une ou plusieurs cylindres Expired - Lifetime EP1381766B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10116815A DE10116815A1 (de) 2001-04-04 2001-04-04 Verfahren zur Phasendetektion mittels lambda-Änderung an einem oder mehreren Zylindern
DE10116815 2001-04-04
PCT/DE2002/001024 WO2002081890A1 (fr) 2001-04-04 2002-03-21 Procede de detection de phases par modification lambda sur une ou plusieurs cylindres

Publications (2)

Publication Number Publication Date
EP1381766A1 true EP1381766A1 (fr) 2004-01-21
EP1381766B1 EP1381766B1 (fr) 2005-09-14

Family

ID=7680380

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02729810A Expired - Lifetime EP1381766B1 (fr) 2001-04-04 2002-03-21 Procede de detection de phases par modification lambda sur une ou plusieurs cylindres

Country Status (5)

Country Link
US (1) US20040112318A1 (fr)
EP (1) EP1381766B1 (fr)
JP (1) JP2004521230A (fr)
DE (2) DE10116815A1 (fr)
WO (1) WO2002081890A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7647914B2 (en) * 2005-11-18 2010-01-19 Ford Global Technologies, Llc Controlled port oxidation of direct injection spark ignition engines
US8899203B2 (en) * 2007-06-22 2014-12-02 Ford Global Technologies, Llc Engine position identification
CN109578139B (zh) * 2017-09-28 2021-02-19 光阳工业股份有限公司 多缸引擎的相位判定方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2692623B1 (fr) * 1992-06-23 1995-07-07 Renault Procede de reperage cylindres pour le pilotage d'un systeme d'injection electronique d'un moteur a combustion interne.
JP3646312B2 (ja) * 1996-03-01 2005-05-11 三菱自動車工業株式会社 内燃機関の気筒判別装置
FR2749885B1 (fr) * 1996-06-14 1998-07-31 Renault Procede pour produire un signal de synchronisation permettant le pilotage d'un systeme d'injection electronique d'un moteur a combustion interne
FR2754852B1 (fr) * 1996-10-18 1999-01-08 Renault Procede de synchronisation du systeme electronique de commande de moteur a combustion interne
ES2191734T3 (es) * 1996-12-03 2003-09-16 Fiat Ricerche Un metodo para sincronizar un motor de combustion interna sin un sensor de posicion de levas.
GB2342447A (en) * 1998-10-03 2000-04-12 Ford Motor Co Verifying engine cycle of an injection IC engine
US6148808A (en) * 1999-02-04 2000-11-21 Delphi Technologies, Inc. Individual cylinder fuel control having adaptive transport delay index

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02081890A1 *

Also Published As

Publication number Publication date
EP1381766B1 (fr) 2005-09-14
US20040112318A1 (en) 2004-06-17
DE10116815A1 (de) 2002-11-07
WO2002081890A1 (fr) 2002-10-17
JP2004521230A (ja) 2004-07-15
DE50204265D1 (de) 2005-10-20

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