EP0482048B1 - Procede pour la commande d'un moteur a combustion interne - Google Patents
Procede pour la commande d'un moteur a combustion interne Download PDFInfo
- Publication number
- EP0482048B1 EP0482048B1 EP90910722A EP90910722A EP0482048B1 EP 0482048 B1 EP0482048 B1 EP 0482048B1 EP 90910722 A EP90910722 A EP 90910722A EP 90910722 A EP90910722 A EP 90910722A EP 0482048 B1 EP0482048 B1 EP 0482048B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- temperature
- air
- intake air
- family
- combustion engine
- 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.)
- Revoked
Links
Images
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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/18—Circuit arrangements for generating control signals by measuring intake air flow
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
- F02D41/2422—Selective use of one or more tables
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0414—Air temperature
Definitions
- the invention relates to a method for controlling an internal combustion engine according to the preamble of claim 1.
- the invention is therefore based on the object of developing the method according to the preamble in such a way that the precontrol is more accurate.
- the invention is based on the insight that the density of the air in the cylinder - and thus the air mass per stroke and the amount of fuel to be metered - is not adequately described by the temperature of the intake air. Rather, the temperature of the intake air within the intake tract is increased by additional heating, which is dependent on the load condition of the internal combustion engine.
- the temperature value of the correction factor is therefore read out from a temperature map, specifically as a function of a heating temperature and the air mass flow, that is to say as a function of parameters which represent the load state of the internal combustion engine.
- the heating temperature is a temperature value which describes the respective thermal state of the internal combustion engine and in particular its intake tract and which is decisive for the heating of the intake air in the intake tract.
- the temperature at a representative Point of the intake tract for example, the temperature at a representative Point of the intake tract.
- a calculated value of a corrected intake air temperature according to the formula is calculated for each support point of the heating temperature and for each support point of the air mass flow calculated;
- the respective temperature of the intake air TAL is then subtracted from this value and the result is entered as the correction temperature TK in the support point of the temperature map.
- the basic map for a specific internal combustion engine is determined on the test bench, this internal combustion engine being operated with a control device which, according to the invention, calculates the fuel mass supplied per cylinder and cycle using the previously determined temperature map.
- the variables speed and intake pressure for the individual support points of the basic map are set and the associated fuel base value is changed until the desired value is obtained, usually in accordance with the stoichiometric mixture ratio between fuel and air :
- the fuel base value obtained in this way is then entered in the base map.
- the fuel mass actually injected deviates from this fuel base value in accordance with the correction according to the invention.
- the basic map contains "Adjusted" values that apply to the selected cooling water temperature and intake air temperature, from which influences of different heating temperatures are eliminated. Since the basic map is determined at constant heating temperature, i.e. constant temperature of the cooling water and intake air, a single characteristic of the temperature map is sufficient for this.
- an internal combustion engine 1 is provided with a speed sensor 11, a pressure sensor 12 for the intake manifold pressure, a cooling water temperature sensor 13 and an intake air temperature sensor 14.
- the output variables of these sensors, the speed n, the intake manifold pressure p, the cooling water temperature TKW and the intake air temperature TAL are fed to a control unit 2 as input variables. From this, control unit 2 determines an injection time t for injection valves 10 of internal combustion engine 1, by which the injected fuel mass is determined.
- the control unit 2 is a microcomputer with the usual input and output circuitry. Its mode of operation for determining the injection time t is explained on the basis of a flow chart according to FIG. 2.
- step S1 the current values for the speed n, the intake manifold pressure p, the cooling water temperature TKW and the intake air temperature TAL are read into a working memory of the microcomputer.
- a temperature difference TD is formed from the cooling water temperature TKW and the intake air temperature TAL.
- step S3 a basic injection time tB is then read from the basic characteristic diagram stored in a read-only memory of the control unit 2.
- the intake manifold pressure and speed n serve as input parameters.
- the basic injection times tB are then calculated from the injection time t multiplied by the quotient of a respective corrected intake air temperature TALK associated with the load and the intake air temperature TALa selected for the design conditions.
- the intake manifold pressure p and the intake air mass LM are measured in each case.
- the thermodynamic equation of state then gives the value of the corrected intake air temperature TALK where VZ is the cylinder volume and R is the gas constant.
- step S4 the intake air mass LM is then calculated from the basic injection time tB multiplied by the speed n.
- step S5 a correction temperature TK is read out from the correction map, which is likewise stored in a read-only memory of the control unit 2.
- the values for the air mass LM and the temperature difference TD determined in steps S2, 3 and 4 serve as input variables.
- correction temperatures TK are also determined experimentally.
- the values for the corrected intake air temperature TALK are determined at different temperature differences TD similar to the method previously described for the design conditions.
- the respective correction temperature TK then results after subtracting the respective underlying intake air temperature TAL.
- the associated corrected intake air temperature TALK can now be determined by addition to the measured intake air temperature TAL, which corresponds in good approximation to the temperature of the intake air in the cylinder.
- step S7 the injection time t is finally calculated, according to which the injection valves 10 are then activated.
- the basic injection time tB is corrected in accordance with the corrected intake air temperature TALK by multiplying it by the quotient of the intake air temperature value TALa selected for the design conditions and this corrected intake air temperature TALK.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Claims (6)
- Procédé pour commander un moteur à combustion interne, selon lequel, pour la détermination de la masse de carburant devant être injectée dans chaque cylindre lors de chaque cycle de travail, une valeur de base du carburant est lue à partir d'un champ de caractéristiques de base, en fonction de paramètres de fonctionnement du moteur à combustion interne et que cette valeur de base est corrigée par un facteur correctif, en fonction de la température de l'air aspiré, caractérisé par le fait que le facteur correctif (FK) comporte une valeur de température avec une température de correction (TK), qui est lue à partir d'un champ de caractéristiques de température, en fonction d'une variable qui dépend du débit massique d'air (LMS) et d'une température de chauffage, qui est déterminante pour le chauffage de l'air aspiré dans la tubulure d'aspiration et qui se calcule à partir de la température de l'air aspiré et de la température en un point de la tubulure d'aspiration.
- Procédé suivant la revendication 1, caractérisé par le fait que pour la détermination du facteur correctif, on ajoute à la température de l'air aspiré (TAL) la température de correction (TK), lue à partir du champ de caractéristiques de température.
- Procédé suivant la revendication 1, caractérisé par le fait qu'on utilise, comme température de chauffage dans le champ de caractéristiques de température, la différence de température (TD) entre la température de l'air aspiré (TAL) et la température de l'eau de refroidissement (TKW).
- Procédé suivant la revendication 1, caractérisé par le fait qu'on utilise le produit de la vitesse de rotation (n) du moteur à combustion interne par la valeur de base respective du carburant en tant que mesure du débit d'air massique (LMS).
- Procédé suivant la revendication 1, caractérisé par le fait que pour la détermination du champ de caractéristiques de température pour chaque point de détection de la température de chauffage et pour chaque point de détection du débit massique d'air (LMS), on calcule une température corrigée associée (TALK) de l'air aspiré conformément à la formule
- Procédé suivant la revendication 1, caractérisé par le fait que pour la détermination du champ de caractéristiques de base pour un moteur à combustion interne déterminé, on détermine tout d'abord au moins une courbe caractéristique du champ de caractéristiques de température dans des conditions théoriques (températures de l'air aspiré TAL et de l'eau de refroidissement TKW constantes), qu'on règle les variables de chaque point de mesure du champ de caractéristique de base dans les conditions théoriques et qu'on modifie la valeur de base associée du carburant jusqu'à ce que la masse de carburant envoyée au moteur à combustion interne soit dans un rapport stoéchiométrique par rapport à la masse d'air envoyée, la masse de carburant effectivement envoyée étant calculée conformément à la revendication 1.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP89112980 | 1989-07-14 | ||
EP89112980 | 1989-07-14 | ||
PCT/EP1990/001098 WO1991001442A1 (fr) | 1989-07-14 | 1990-07-06 | Procede pour la commande d'un moteur a combustion interne |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0482048A1 EP0482048A1 (fr) | 1992-04-29 |
EP0482048B1 true EP0482048B1 (fr) | 1995-04-19 |
Family
ID=8201625
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP90910722A Revoked EP0482048B1 (fr) | 1989-07-14 | 1990-07-06 | Procede pour la commande d'un moteur a combustion interne |
Country Status (7)
Country | Link |
---|---|
US (1) | US5226395A (fr) |
EP (1) | EP0482048B1 (fr) |
JP (1) | JPH04506692A (fr) |
CS (1) | CS346490A2 (fr) |
DE (1) | DE59008945D1 (fr) |
ES (1) | ES2071104T3 (fr) |
WO (1) | WO1991001442A1 (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19636451B4 (de) * | 1996-09-07 | 2010-06-10 | Robert Bosch Gmbh | Einrichtung zum Steuern der einer Brennkraftmaschine zuzuführenden Kraftstoffmenge |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2755018B2 (ja) * | 1992-02-28 | 1998-05-20 | 三菱自動車工業株式会社 | 吸排気弁停止機構付きエンジンの吸気量算出装置 |
AT510912B1 (de) * | 2012-03-06 | 2016-03-15 | Avl List Gmbh | Verfahren zur Emissionsoptimierung von Verbrennungskraftmaschinen |
DE102018207465A1 (de) * | 2018-05-15 | 2019-11-21 | Volkswagen Aktiengesellschaft | Verfahren zur Berechnung einer Frischluftmasse in einem Zylinder und Steuerung |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3964443A (en) * | 1973-05-25 | 1976-06-22 | The Bendix Corporation | Digital engine control system using DDA schedule generators |
JPS55131535A (en) * | 1979-04-02 | 1980-10-13 | Honda Motor Co Ltd | Engine controller |
JPS5888435A (ja) * | 1981-11-19 | 1983-05-26 | Honda Motor Co Ltd | 吸気温度による補正機能を有する内燃エンジンの空燃比補正装置 |
JPS5888436A (ja) * | 1981-11-19 | 1983-05-26 | Honda Motor Co Ltd | 吸気温度による補正機能を有する内燃エンジンの空燃比補正装置 |
JPS58162732A (ja) * | 1982-03-23 | 1983-09-27 | Toyota Motor Corp | 内燃機関の燃料供給量制御方法 |
JPS6131646A (ja) * | 1984-07-25 | 1986-02-14 | Hitachi Ltd | 内燃機関制御装置 |
JPS61212639A (ja) * | 1985-03-18 | 1986-09-20 | Honda Motor Co Ltd | 内燃エンジンの冷間時の燃料供給制御方法 |
JPH0665858B2 (ja) * | 1986-05-02 | 1994-08-24 | トヨタ自動車株式会社 | 内燃機関の空燃比制御方法 |
DE3714245A1 (de) * | 1986-05-10 | 1987-11-12 | Volkswagen Ag | Regeleinrichtung |
FR2605050B1 (fr) * | 1986-10-14 | 1991-01-11 | Renault | Procede de correction de la richesse d'un melange air-carburant admis dans un moteur a combustion interne, a injection electronique. |
US4823755A (en) * | 1987-01-27 | 1989-04-25 | Toyota Jidosha Kabushiki Kaisha | Fuel injection system for an internal combustion engine |
DE68904437D1 (de) * | 1988-01-29 | 1993-03-04 | Hitachi Ltd | Steuerung fuer motor-kraftstoffeinspritzung. |
US4886027A (en) * | 1988-07-29 | 1989-12-12 | General Motors Corporation | Fuel injection temperature compensation system |
-
1990
- 1990-07-06 WO PCT/EP1990/001098 patent/WO1991001442A1/fr not_active Application Discontinuation
- 1990-07-06 EP EP90910722A patent/EP0482048B1/fr not_active Revoked
- 1990-07-06 DE DE59008945T patent/DE59008945D1/de not_active Revoked
- 1990-07-06 ES ES90910722T patent/ES2071104T3/es not_active Expired - Lifetime
- 1990-07-06 JP JP2510668A patent/JPH04506692A/ja active Pending
- 1990-07-12 CS CS903464A patent/CS346490A2/cs unknown
-
1992
- 1992-01-14 US US07/820,352 patent/US5226395A/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19636451B4 (de) * | 1996-09-07 | 2010-06-10 | Robert Bosch Gmbh | Einrichtung zum Steuern der einer Brennkraftmaschine zuzuführenden Kraftstoffmenge |
Also Published As
Publication number | Publication date |
---|---|
US5226395A (en) | 1993-07-13 |
CS346490A2 (en) | 1991-12-17 |
JPH04506692A (ja) | 1992-11-19 |
DE59008945D1 (de) | 1995-05-24 |
EP0482048A1 (fr) | 1992-04-29 |
ES2071104T3 (es) | 1995-06-16 |
WO1991001442A1 (fr) | 1991-02-07 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0474711B1 (fr) | Procede de determination du volume d'air de combustion dans les cylindres d'un moteur a combustion interne | |
EP1317616B1 (fr) | Procede permettant de determiner le debit massique de nox a partir des donnees caracteristiques pour une temperature d'entree d'air et du moteur variable | |
DE3823277A1 (de) | Motorsteuersystem | |
DE10330112B4 (de) | Vorrichtung und Verfahren zum Steuern/Regeln eines Kraftstoff/Luftverhältnisses für eine Brennkraftmaschine | |
DE102007054650B3 (de) | Ermittlung der Kraftstoffqualität bei einer selbstzündenden Brennkraftmaschine | |
DE4433314A1 (de) | Steuerungsverfahren und Vorrichtung für aus Behältern entweichende Stoffe bei Verbrennungskraftmaschinen | |
DE3700766A1 (de) | Luft/kraftstoff-verhaeltnis-steuerungsvorrichtung fuer uebergangszustaende beim betrieb einer brennkraftmaschine | |
DE19509310C2 (de) | Verfahren und Einrichtung zur Entlastung des Absorptionsspeichers einer Tankentlüftung bei Verbrennungsmotoren | |
DE19831748B4 (de) | Verfahren und Vorrichtung zur Steuerung einer Brennkraftmaschine | |
DE19539937C2 (de) | Verfahren zur Steuerung des Abgasverhältnisses von Kraftstoff zu Sauerstoff im Abgastrakt vor einem Katalysator | |
DE19745682B4 (de) | Verfahren und Vorrichtung zur Ermittlung von Kenngrößen | |
DE3721910A1 (de) | Verfahren und einrichtung zur erfassung des ansaugvolumens fuer eine brennkraftmaschine oder dergleichen | |
DE4442043C2 (de) | Behältersteuervorrichtung für Kraftstoffdampf und Steuerverfahren für eine Verbrennungskraftmaschine | |
DE19530274B4 (de) | Verfahren zur Steuerung einer Kolbenbrennkraftmaschine | |
DE3922448A1 (de) | Regeleinrichtung fuer das kraftstoff-luftverhaeltnis einer brennkraftmaschine | |
DE19629552C1 (de) | Vorrichtung zum Kompensieren der Temperaturdrift einer Abgassonde | |
EP0482048B1 (fr) | Procede pour la commande d'un moteur a combustion interne | |
DE19514423A1 (de) | Verfahren und Vorrichtung zum Erfassen des in den Zylinder eines Verbrennungsmotors geführten Luftstromes, und Verfahren und Vorrichtung zum Steuern des Kraftstoffes des Verbrennungsmotors, die zur Anwendung des Verfahrens und der Vorrichtung ausgestaltet sind | |
EP1273782A2 (fr) | Procédé pour la détermination de données de diagramme caractéristique pour la définition des réseaux de caractéristiques d'un moteur à combustion interne, ainsi que procédé pour la commande d'un moteur à combustion interne | |
EP2019195B1 (fr) | Procédé de détermination de la quantité de carburant injectée | |
EP0707685B1 (fr) | Procede d'adaptation, aux variables en cours de l'air exterieur, des valeurs d'air d'un diagramme caracteristique de substitution utilise lorsqu'il se produit des pulsations de l'air dans la tubulure d'admission d'un moteur a combustion interne pour commander la formation du melange | |
DE4134304A1 (de) | Zylinderindividuelle mengenkorrektur | |
DE3419069A1 (de) | Verfahren und vorrichtung zur steuerung der abgasrueckfuehrung bei einem dieselmotor | |
DE4337272A1 (de) | Verfahren zur Temperaturbestimmung eines Objekts | |
DE19834664A1 (de) | Luft/Kraftstoff-Verhältnis-Steuervorrichtung für Verbrennungsmotoren |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19911217 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
17Q | First examination report despatched |
Effective date: 19940114 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
REF | Corresponds to: |
Ref document number: 59008945 Country of ref document: DE Date of ref document: 19950524 |
|
REG | Reference to a national code |
Ref country code: ES Ref legal event code: FG2A Ref document number: 2071104 Country of ref document: ES Kind code of ref document: T3 |
|
ITF | It: translation for a ep patent filed |
Owner name: STUDIO JAUMANN |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19950717 Year of fee payment: 6 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19950626 |
|
ET | Fr: translation filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19950915 Year of fee payment: 6 |
|
PLBI | Opposition filed |
Free format text: ORIGINAL CODE: 0009260 |
|
PLBF | Reply of patent proprietor to notice(s) of opposition |
Free format text: ORIGINAL CODE: EPIDOS OBSO |
|
26 | Opposition filed |
Opponent name: ROBERT BOSCH GMBH Effective date: 19960118 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19960621 Year of fee payment: 7 |
|
RDAH | Patent revoked |
Free format text: ORIGINAL CODE: EPIDOS REVO |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: ES Payment date: 19960711 Year of fee payment: 7 |
|
RDAG | Patent revoked |
Free format text: ORIGINAL CODE: 0009271 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: PATENT REVOKED |
|
GBPR | Gb: patent revoked under art. 102 of the ep convention designating the uk as contracting state |
Free format text: 960705 |
|
27W | Patent revoked |
Effective date: 19960705 |