EP1402164B1 - Method and device for controlling an internal combustion engine - Google Patents
Method and device for controlling an internal combustion engine Download PDFInfo
- Publication number
- EP1402164B1 EP1402164B1 EP02750790A EP02750790A EP1402164B1 EP 1402164 B1 EP1402164 B1 EP 1402164B1 EP 02750790 A EP02750790 A EP 02750790A EP 02750790 A EP02750790 A EP 02750790A EP 1402164 B1 EP1402164 B1 EP 1402164B1
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- segment
- subsegments
- control unit
- control
- internal combustion
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- 238000002485 combustion reaction Methods 0.000 title claims description 21
- 238000000034 method Methods 0.000 title claims description 11
- 238000002347 injection Methods 0.000 description 12
- 239000007924 injection Substances 0.000 description 12
- 239000000446 fuel Substances 0.000 description 3
- 230000004913 activation Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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Classifications
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- 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
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- 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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/263—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the program execution being modifiable by physical parameters
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- 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
- F02D41/26—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor
- F02D41/266—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using computer, e.g. microprocessor the computer being backed-up or assisted by another circuit, e.g. analogue
Definitions
- the invention relates to a method and a device for controlling an internal combustion engine having at least two control units.
- a method and a device for controlling an internal combustion engine with at least two control units is known from US 5,156,074 DE 198 54 304 known.
- each four cylinders are assigned to a bank and are acted upon by a control unit with control signals, in particular for controlling the fuel metering.
- the injections or ignitions can not always be equally divided between the two control units.
- the injection into the first, fourth, sixth and seventh cylinders is controlled by a first control unit and the injection into the second, third, fifth and eighth cylinders is controlled by a second control unit.
- controllers In order to provide low-cost controllers, it should be possible to use the controllers for both four-cylinder engines and eight-cylinder engines. Ie. in an eight-cylinder internal combustion engine to two controllers, which are commonly used for four-cylinder internal combustion engines, are used.
- the ECUs should differ as little as possible from each other, d. H. both the same hardware of the controller and the same software of the controller should be usable for both four and eight cylinders.
- one motor revolution is divided into a predetermined number of sub-segments having the same length.
- One or more subsegments can be combined into one segment.
- Control data is calculated once or twice in all subsegments.
- the control unit outputs the control data once per segment.
- a motor revolution be divided into two types of segments, which are referred to as segments or sub-segments.
- the actions that are carried out in a segment in the case of conventional control units are carried out in each case in a subsegment on the one hand and in a segment on the other hand.
- a particularly simple realization results if in a first control unit the output of the control data takes place in each segment in each case in the first subsegment and / or if in a second control unit the output of the control data in a first segment in each case in a predeterminable subsegment and / or in the remaining segments are each in the first subsegment.
- This means that the output of the control data usually takes place in the first subsegment of each segment. Only the first segment of a control unit is an exception.
- the output of the control data can take place in any subsegment.
- FIG. 1 a block diagram of two control units and FIG. 2 plotted different signals over time.
- a device for controlling a vehicle with two control units is shown.
- a first control unit is designated 100.
- a computer 110 communicates with a data memory 124 and a program memory 126. Furthermore, the control unit 100 is acted upon by sensors 120 with signals.
- the computer 110 supplies power amplifiers 130, 131, 132 and 133 with drive signals.
- the output stages act on actuating elements 140, 141, 142 and 143 with drive signals.
- the adjusting elements are preferably magnetic valves and / or piezoelectric actuators with which the fuel metering in an internal combustion engine can be controlled.
- a second control unit 200 is provided, which essentially has the same components.
- the second control unit essentially contains a computer 210, which is connected to a data memory 224 and a program memory 226. Furthermore, the control unit 200 is acted upon by sensors 220 with signals.
- the computer 210 supplies power amplifiers 230, 231, 232 and 233 with drive signals. In turn, the output stages act on actuating elements 240, 241, 242 and 243 with drive signals.
- the first and second control units exchange data via a line 150.
- This is preferably a bus system, in particular a so-called CAN bus. Data can also be exchanged with other systems (not shown) via this bus system.
- the illustrated embodiment is an eight-cylinder engine.
- the procedure according to the invention is not limited to the number of control elements. This procedure can also be used in internal combustion engines with other numbers of Sellettin. Thus, for example, in a twelve-cylinder internal combustion engine, proceed accordingly. In this case, then three control units with to provide four actuatable control elements or two control units, each with six actuating elements to be controlled. Alternatively, it can also be provided that only two or three control elements are controlled per control unit.
- the program is stored, with which the computer 110 calculates the signals for controlling the output stages 130 to 133.
- the computer uses data stored in the data memory 124 as well as the signals detected by the sensors 120.
- These drive signals are preferably angular positions at which the current flow through the solenoid valve should begin or end. These angular sizes are preferably stored for each solenoid valve in a storage element.
- control data is stored for all injectors.
- a respective storage element is provided for the start of injection and for the end of injection. If a plurality of partial injections are provided, at least two storage elements are provided for each partial injection.
- one motor revolution is divided into a plurality of subsegments.
- each injection is assigned at least one subsegment. That is, the number of subsegments corresponds to an integer multiple of the number of cylinders. If each cylinder has exactly one subsegment assigned to it, the calculation of the control data, its output and the control of the control element takes place exactly once per subsegment. In an internal combustion engine with four cylinders, one segment corresponds to 180 °.
- first control unit 100 or with the second control unit 200 can each control a four-cylinder internal combustion engine. If an eight-cylinder internal combustion engine are to be controlled, preferably two identical control devices are used. These then exchange corresponding signals via the line 150.
- the two control units without substantial modifications are suitable both for four-cylinder internal combustion engines, as well as when using two control units for eight-cylinder internal combustion engines.
- the data in the program memory 126 should not be changed when used in an eight-cylinder internal combustion engine compared to a four-cylinder internal combustion engine. It is merely intended that very few data of the data memory 124 be changed. As a result, a backwards compatibility with the normal conventional four-cylinder control unit is possible.
- the previous software can be used without further ado. It is problematic if any firing order of the cylinders is desired. So far, this can only be realized by means of a complicated interrupt scheme and certain tricks in the area of control.
- the segments are each subdivided into different subsegments or different subsegments are combined to form segments.
- the calculation of the activation data is carried out in each subsegment. This ensures that the calculations are always carried out at fixed intervals. It is further provided that in each segment in each case an injection takes place. Ie. The activation data are calculated one or more times in each segment. The output of the control data or the control of the control elements takes place only once per segment. This ensures that the data outputs and monitoring routines performed once per segment will continue to be performed once per segment.
- all subsegments are of equal length and that the number of subsegments corresponds to the number of cylinders, in the illustrated exemplary embodiment the number eight.
- the length of a segment corresponds to the number of subsegments multiplied by the length of the subsegment.
- the number of subsegments per segment is arbitrary.
- all subsegments have the same length. Furthermore, since the calculation of the control data takes place in each subsegment, it is ensured that all calculations are performed regularly at fixed angular intervals be performed. The calculations are performed once per subsegment.
- the number of Subsegmengte is selected equal to the number of segments, d. H. a subsegment corresponds to a segment.
- the procedure is also possible with other cylinder numbers.
- twelve-cylinder internal combustion engines it may be provided that twelve subsegments are provided and three control devices take over the control.
- a three-output controller is used, with six cylinders it is then possible to use two controllers with three segments and six subsegments.
- FIG. 2 For example, the division of the subsegments for the first control device S1 and the second control device S2 is shown.
- Long vertical bars indicate the segments designated as S11, S12, S13 and S14 in the first cylinder and as S21, S22, S23 and S24 in the second cylinder.
- the first segment S11 of the first cylinder is divided into three subsegments marked with small vertical lines.
- the second segment S12 is divided into two, the third segment S13 into a subsegment and the fourth segment S14 into two subsegments.
- the first segment S21 of the second cylinder is divided into two subsegments.
- the second segment S22 is divided into two, the third segment S23 into three subsegments and the fourth segment S24 into a subsegment.
- the calculation and injection take place respectively in the first subsegment of each segment.
- the second control unit S2 the Calculation and the output in the first segment in a predeterminable sub-segment, in the example shown, it is the second sub-segment, and in the remaining segments in each case in the first sub-segment.
- the total number and number of subsegments per segment and the subsegment, in which the output of the control data in the first segment is performed by the second control unit must be defined in the control units.
- the total number of subsegments is set to four and the number of subsegments per segment is set to one.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Description
Die Erfindung betrifft ein Verfahren und eine Vorrichtung zur Steuerung einer Brennkraftmaschine mit wenigstens zwei Steuereinheiten.The invention relates to a method and a device for controlling an internal combustion engine having at least two control units.
Ein Verfahren und eine Vorrichtung zur Steuerung eine r Brennkraftmaschine mit wenigstens zwei Steuereinheiten ist aus der
Bei einer solchen Anordnung erfolgt nach einer Drehung der Kurbelwellen um 90° eine Kraftstoffeinspritzung und damit eine Zündung. Üblicherweise lassen sich die Einspritzungen bzw. Zündungen nicht immer gleichmäßig auf die beiden Steuergeräte aufteilen. So kann beispielsweise vorgesehen sein, dass die Einspritzung in den ersten, vierten, sechsten und siebten Zylinder von einem ersten Steuergerät und die Einspritzung in den zweiten, dritten, fünften und achten Zylinder von einem zweiten Steuergerät gesteuert wird.In such an arrangement takes place after a rotation of the crankshafts by 90 °, a fuel injection and thus an ignition. Usually, the injections or ignitions can not always be equally divided between the two control units. For example, it can be provided that the injection into the first, fourth, sixth and seventh cylinders is controlled by a first control unit and the injection into the second, third, fifth and eighth cylinders is controlled by a second control unit.
Um kostengünstige Steuergeräte bereitzustellen, sollte es möglich sein, die Steuergeräte sowohl für Brennkraftmaschinen mit vier Zylindern, als auch für Brennkraftmaschinen mit acht Zylindern zu verwenden. D. h. bei einer Achtzylinder-Brennkraftmaschine sollen zwei Steuergeräte, die üblicherweise für Vierzylinder-Brennkraftmaschinen verwendet werden, eingesetzt werden. Dabei sollen sich die Steuergeräte möglichst wenig voneinander unterscheiden, d. h. es sollte sowohl beim Einsatz bei vier, als auch bei acht Zylindern die gleiche Hardware des Steuergeräts als auch die gleiche Software des Steuergeräts verwendbar sein.In order to provide low-cost controllers, it should be possible to use the controllers for both four-cylinder engines and eight-cylinder engines. Ie. in an eight-cylinder internal combustion engine to two controllers, which are commonly used for four-cylinder internal combustion engines, are used. The ECUs should differ as little as possible from each other, d. H. both the same hardware of the controller and the same software of the controller should be usable for both four and eight cylinders.
Lediglich im Bereich der Ansteuerdaten sollten geringfügige Unterschiede bei den beiden Steuergeräten erforderlich sein. Die üblichen Applikationsdaten sollten allenfalls nur in geringem Umfang verändert werden.Only in the field of control data should slight differences in the two control units be required. At most, the usual application data should only be changed to a limited extent.
Erfindungsgemäß ist vorgesehen, dass bei einem Verfahren und einer Vorrichtung zur Steuerung eines Fahrzeugs mit wenigstens zwei Steuereinheiten, eine Motorumdrehung in eine vorgegebene Anzahl von Subsegmenten mit gleicher Länge aufgeteilt ist. Jeweils ein oder mehrere Subsegmente sind zu einem Segment zusammenfassbar. Ansteuerdaten werden in allen Subsegmenten einmal oder ruchtmals berechnet. Die Steuereinheit gibt die Ansteuerdaten einmal pro Segment aus. Erfindungsgemäß ist vorgesehen, dass eine Motorumdrehung in zwei Arten von Segmenten aufgeteilt werden, die als Segmente bzw. als Subsegmente bezeichnet werden. Dabei werden die Aktionen, die die bei herkömmlichen Steuereinheiten jeweils in einem Segment durchgeführt werden zum einen jeweils in einem Subsegment und zum anderen in einem Segment durchgeführt werden. Vorzugsweise werden wenigstens bei einem Segment zwei Subsegmente zu einem Segment zusammengefaßt.According to the invention, in a method and a device for controlling a vehicle having at least two control units, one motor revolution is divided into a predetermined number of sub-segments having the same length. One or more subsegments can be combined into one segment. Control data is calculated once or twice in all subsegments. The control unit outputs the control data once per segment. According to the invention, it is provided that a motor revolution be divided into two types of segments, which are referred to as segments or sub-segments. In this case, the actions that are carried out in a segment in the case of conventional control units are carried out in each case in a subsegment on the one hand and in a segment on the other hand. Preferably, at least at a segment two subsegments to a segment summarized.
Eine besonders einfache Realisierung ergibt sich, wenn bei einer ersten Steuereinheit die Ausgabe der Ansteuerdaten in jedem Segment jeweils in dem ersten Subsegment erfolgt und/oder wenn bei einer zweiten Steuereinheit die Ausgabe der Ansteuerdaten in einem ersten Segment jeweils in einem vorgebbaren Subsegment und/oder in den übrigen Segmenten jeweils in dem ersten Subsegment erfolgt. Dies bedeutet, die Ausgabe der Steuerdaten erfolgt in der Regel im ersten Subsegment eines jeden Segments. Lediglich das erste Segment einer Steuereinheit bildet eine Ausnahme. Hier kann die Ausgabe der Ansteuerdaten in einem beliebigen Subsegment erfolgen.A particularly simple realization results if in a first control unit the output of the control data takes place in each segment in each case in the first subsegment and / or if in a second control unit the output of the control data in a first segment in each case in a predeterminable subsegment and / or in the remaining segments are each in the first subsegment. This means that the output of the control data usually takes place in the first subsegment of each segment. Only the first segment of a control unit is an exception. Here the output of the control data can take place in any subsegment.
Vorteilhafte und zweckmäßige Ausgestaltungen und Weiterbildungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Advantageous and expedient refinements and developments of the invention are characterized in the subclaims.
Die Erfindung wird nachstehend anhand der in der Zeichnung dargestellten Ausführungsform erläutert. Es zeigen
In
Desweiteren ist eine zweite Steuereinheit 200 vorgesehen, die im Wesentlichen dieselben Bauelemente aufweist Die zweite Steuereinheit beinhaltet im Wesentlichen einen Rechner 210, der mit einem Datenspeicher 224 und einem Programmspeicher 226 in Verbindung steht. Desweiteren wird die Steuereinheit 200 von Sensoren 220 mit Signalen beaufschlagt. Der Rechner 210 beaufschlagt Endstufen 230, 231, 232 und 233 mit Ansteuersignalen. Die Endstufen wiederum beaufschlagen Stellelemente 240, 241, 242 und 243 mit Ansteuersignalen.Furthermore, a
Die erste und zweite Steuereinheit tauschen über eine Leitung 150 Daten aus. Hierbei handelt es sich vorzugsweise um ein Bussystem, insbesondere um einen sogenannten CAN-Bus. Über dieses Bussystem können auch mit anderen nicht dargestellten Systemen Daten ausgetauscht werden.The first and second control units exchange data via a
Bei der dargestellten Ausführungsform handelt es sich um eine Brennkraftmaschine mit acht Zylindern. Die erfindungsgemäße Vorgehensweise ist nicht auf die Zahl der Stellelemente beschränkt. Diese Vorgehensweise kann auch bei Brennkraftmaschinen mit anderer Anzahlen von Sellelementen eingesetzt werden. So kann beispielsweise bei einer Zwölfzylinder-Brennkraftmaschine, entsprechend vorgegangen werden. In diesem Fall sind dann drei Steuereinheiten mit vier anzusteuernden Stellelementen bzw. zwei Steuereinheiten mit je sechs anzusteuernden Stellelementen vorzusehen. Alternativ kann auch vorgesehen sein, dass pro Steuereinheit lediglich zwei oder drei Stellelemente angesteuert werden.The illustrated embodiment is an eight-cylinder engine. The procedure according to the invention is not limited to the number of control elements. This procedure can also be used in internal combustion engines with other numbers of Sellelementen. Thus, for example, in a twelve-cylinder internal combustion engine, proceed accordingly. In this case, then three control units with to provide four actuatable control elements or two control units, each with six actuating elements to be controlled. Alternatively, it can also be provided that only two or three control elements are controlled per control unit.
In dem Programmspeicher 126 ist das Programm abgelegt, mit dem der Rechner 110 die Signale zur Ansteuerung der Endstufen 130 bis 133 berechnet. Hierzu verwendet der Rechner in dem Datenspeicher 124 abgelegte Daten sowie die von den Sensoren 120 erfassten Signale.In the
Ausgehend von Signalen, die den Betriebszustand der Brennkraftmaschine, des Fahrzeugs oder Umweltbedingungen charakterisieren und denn im Datenspeicher 124 abgelegten Daten berechnet die Rechnereinheit 110 unter Verwendung des im Programmspeicher 126 abgelegten Programms Ansteuerdaten zur Ansteuerung verschiedener Steller. In dem dargestellten Ausführungsbeispiel werden Ansteuersignale für Einspritzventile 140 bis 143 berechnet.Based on signals that characterize the operating state of the internal combustion engine, the vehicle or environmental conditions and because data stored in the
Bei diesen Ansteuersignalen handelt es sich vorzugsweise um Winkelpositionen, bei denen der Stromfluss durch das Magnetventil beginnen bzw. enden soll. Diese Winkelgrößen sind vorzugsweise für jedes Magnetventil in einem Speicherelement abgelegt.These drive signals are preferably angular positions at which the current flow through the solenoid valve should begin or end. These angular sizes are preferably stored for each solenoid valve in a storage element.
D. h. für alle Einspritzventile sind mehrere Speicherelemente vorgesehen, in denen die Ansteuerdaten abgelegt sind. Vorzugsweise ist für den Einspritzbeginn und für das Einspritzende jeweils ein Speicherelement vorgesehen. Sind mehrere Teileinspritzungen vorgesehen, sind für jede Teileinspritzung jeweils wenigstens zwei Speicherelemente vorgesehen.Ie. For all injectors several memory elements are provided in which the control data is stored. Preferably, a respective storage element is provided for the start of injection and for the end of injection. If a plurality of partial injections are provided, at least two storage elements are provided for each partial injection.
Üblicherweise ist vorgesehen, dass eine Motorumdrehung in eine Vielzahl von Subsegmenten aufgeteilt ist. Vorzugsweise ist vorgesehen, dass jeder Einspritzung wenigstens ein Subsegment zugeordnet ist. Das heißt die Anzahl der Subsegmente entspricht einem ganzzahligen Vielfachen der Zylinderzahl. Ist jedem Zylinder genau ein Subsegment zugeordnet, so erfolgt die Berechnung der Ansteuerdaten, deren Ausgabe und die Ansteuerung des Stellelements genau einmal pro Subsegment. Bei einer Brennkraftmaschine mit vier Zylindern entspricht ein Segment 180°.Usually, it is provided that one motor revolution is divided into a plurality of subsegments. Preferably it is provided that each injection is assigned at least one subsegment. That is, the number of subsegments corresponds to an integer multiple of the number of cylinders. If each cylinder has exactly one subsegment assigned to it, the calculation of the control data, its output and the control of the control element takes place exactly once per subsegment. In an internal combustion engine with four cylinders, one segment corresponds to 180 °.
Mit der ersten Steuereinheit 100 oder mit der zweiten Steuereinheit 200 läßt sich jeweils eine Vierzylinderbrennkraftmaschine steuern. Soll eine Achtzylinder-Brennkraftmaschine angesteuert werden, so werden vorzugsweise zwei identische Steuergeräte verwendet. Diese tauschen dann über die Leitung 150 entsprechende Signale aus.With the
Erfindungsgemäß ist vorgesehen, dass die beiden Steuergeräte ohne wesentliche Abwandlungen sowohl für Vierzylinder-Brennkraftmaschinen, als auch bei Verwendung zweier Steuergeräte für Achtzylinder-Brennkraftmaschinen geeignet sind. Insbesondere sollen bei der Verwendung bei einer Achtzylinder-Brennkraftmaschine gegenüber einer Vierzylinder-Brennkraftmaschine die Daten in dem Programmspeicher 126 nicht geändert werden. Es ist lediglich vorgesehen sein, dass sehr wenige Daten des Datenspeichers 124 geändert werden. Dadurch ist eine Abwärtskompatibilität zum normalen üblichen Vierzylinder-Steuergerät möglich.According to the invention, it is provided that the two control units without substantial modifications are suitable both for four-cylinder internal combustion engines, as well as when using two control units for eight-cylinder internal combustion engines. In particular, the data in the
Werden die Einspritzungen immer abwechselnd von dem ersten oder dem zweiten Steuergerät berechnet, so kann ohne weiteres die bisherige Software verwendet werden. Problematisch ist es, wenn eine beliebige Zündreihenfolge der Zylinder gewünscht wird. Dies kann bisher nur durch ein kompliziertes Interruptschema und gewisse Kunstgriffe im Bereich der Steuerung realisiert werden.If the injections are always calculated alternately by the first or the second control unit, the previous software can be used without further ado. It is problematic if any firing order of the cylinders is desired. So far, this can only be realized by means of a complicated interrupt scheme and certain tricks in the area of control.
Mit der erfindungsgemäßen Vorgehensweise ist dies ohne größeren Aufwand möglich. So müssen lediglich sehr wenige Applikationsdaten geändert werden. Erfindungsgemäß ist vorgesehen, dass die Segmente jeweils in verschiedene Subsegmente aufgeteilt bzw. verschiedene Subsegmente zu Segmenten zusammengefaßt werden.With the procedure according to the invention, this is possible without much effort. So only very few application data need to be changed. According to the invention, the segments are each subdivided into different subsegments or different subsegments are combined to form segments.
Erfindungsgemäß ist vorgesehen, dass die Berechnung der Ansteuerdaten in jedem Subsegment durchgeführt werden. Dadurch ist gewährleistet, dass die Berechnungen immer in festen Abständen durchgeführt werden. Ferner ist vorgesehen, dass in jedem Segment jeweils eine Einspritzung erfolgt. D. h. es werden in jedem Segment die Ansteuerdaten ein oder mehrmals berechnet. Die Ausgabe der Ansteuerdaten bzw. die Ansteuerung der Stellelemente erfolgt nur einmal pro Segment. Dadurch ist gewährleisten, dass die Datenausgaben und Überwachungensroutinen, die einmal pro Segment durchgeführt werden, weiterhin einmal pro Segment durchgeführt werden.According to the invention, it is provided that the calculation of the activation data is carried out in each subsegment. This ensures that the calculations are always carried out at fixed intervals. It is further provided that in each segment in each case an injection takes place. Ie. The activation data are calculated one or more times in each segment. The output of the control data or the control of the control elements takes place only once per segment. This ensures that the data outputs and monitoring routines performed once per segment will continue to be performed once per segment.
Erfindungsgemäß ist vorgesehen, dass alle Subsegmente gleich lang sind und dass die Anzahl der Subsegmente der Anzahl der Zylinder, in dem dargestellten Ausführungsbeispiel der Zahl Acht, entspricht. Die Länge eines Segments entspricht dabei der Anzahl der Subsegmente multipliziert mit der Länge des Subsegments. Die Anzahl der Subsegmente pro Segment ist dabei beliebig. Durch geeignete Aufteilung der Segmente in Subsegmente bzw. durch geeignete Zusammenfassung der Subsegmente zu Segmenten ist nahezu jede beliebige Zündreihenfolge möglich.According to the invention, it is provided that all subsegments are of equal length and that the number of subsegments corresponds to the number of cylinders, in the illustrated exemplary embodiment the number eight. The length of a segment corresponds to the number of subsegments multiplied by the length of the subsegment. The number of subsegments per segment is arbitrary. By suitable division of the segments into subsegments or by suitable combination of the subsegments into segments, virtually any firing order is possible.
Vorzugsweise ist vorgesehen, dass alle Subsegmente die gleiche Länge aufweisen. Da ferner in jedem Subsegment die Berechnung der Ansteuerdaten erfolgt, ist gewährleistet, dass alle Berechnungen regelmäßig in festen Winkelabständen durchgeführt werden. Die Berechnungen werden einmal pro Subsegment durchgeführt.It is preferably provided that all subsegments have the same length. Furthermore, since the calculation of the control data takes place in each subsegment, it is ensured that all calculations are performed regularly at fixed angular intervals be performed. The calculations are performed once per subsegment.
Wird das Steuergerät für eine Vierzylinder-Brennkraftmaschine verwendet, so wird die Zahl der Subsegmengte gleich der Zahl der Segmente gewählt, d. h. ein Subsegment entspricht einem Segment.If the control unit is used for a four-cylinder internal combustion engine, the number of Subsegmengte is selected equal to the number of segments, d. H. a subsegment corresponds to a segment.
Prinzipiell ist die Vorgehensweise auch bei anderen Zylinderzahlen möglich. So kann beispielsweise bei Zwölfzylinder-Brennkraftmaschinen vorgesehen sein, dass zwölf Subsegmente vorgesehen sind und drei Steuergeräte die Ansteuerung übernehmen. Bei Dreizylinder-Brennkraftmschinen wird ein Steuergerät mit drei Endstufen verwendet, bei sechs Zylindern können dann entsprechend zwei Steuergeräte eingesetzt werden, bei denen drei Segmente und sechs Subsegmente vorgesehen sind.In principle, the procedure is also possible with other cylinder numbers. For example, in the case of twelve-cylinder internal combustion engines, it may be provided that twelve subsegments are provided and three control devices take over the control. For three-cylinder engines, a three-output controller is used, with six cylinders it is then possible to use two controllers with three segments and six subsegments.
In
Bei der ersten Steuereinheit erfolgt die Berechnung und Einspritzung jeweils in dem ersten Subsegment eines jeden Segmentes. Bei der zweiten Steuereinheit S2 erfolgt die Berechnung und die Ausgabe in dem ersten Segment in vorgebbaren Subsegment, in dem dargestellten Beispiel ist es das zweite Subsegment, und bei den übrigen Segmenten jeweils in dem ersten Subsegment.In the case of the first control unit, the calculation and injection take place respectively in the first subsegment of each segment. In the second control unit S2, the Calculation and the output in the first segment in a predeterminable sub-segment, in the example shown, it is the second sub-segment, and in the remaining segments in each case in the first sub-segment.
Im Rahmen der Applikation ist bei den Steuereinheiten die Gesamtzahl und Anzahl der Subsegmente pro Segment sowie das Subsegment festzulegen, bei dem die Ausgabe der Ansteuerdaten im ersten Segment durch die zweite Steuereinheit erfolgt. Beim Einsatz als übliche Steuereinheit für eine Brennkraftmaschine mit vier Zylindern wird die Gesamtzahl der Subsegmente auf vier und die Anzahl der Subsegmente pro Segment auf eins gesetzt.In the context of the application, the total number and number of subsegments per segment and the subsegment, in which the output of the control data in the first segment is performed by the second control unit, must be defined in the control units. When used as a conventional control unit for a four cylinder engine, the total number of subsegments is set to four and the number of subsegments per segment is set to one.
Claims (4)
- Method for controlling an internal combustion engine with at least two control units, wherein one rotation of the engine is divided into a predefined number of subsegments of the same length, wherein a plurality of subsegments are each combined to form one segment, wherein actuation data in all the subsegments are calculated once or repeatedly, and wherein each control unit outputs the actuation data once per segment, wherein at a first control unit the outputting of the actuation data in each segment is respectively carried out in the first subsegment.
- Method according to Claim 1, characterized in that at a second control unit the outputting of the actuation data in a first segment is respectively carried out in a predefinable subsegment.
- Method according to one of Claims 1 or 2, characterized in that the outputting of the actuation data in the other segments is respectively carried out in the first subsegment.
- Device for controlling an internal combustion engine having at least two control units, wherein one rotation of the engine is divided into a predefined number of subsegments of the same length, wherein a plurality of subsegments can be respectively combined to form one segment, wherein the control units calculate the actuation data in all the subsegments, and wherein each control unit outputs the actuation data once per segment, wherein a first control unit respectively outputs the actuation data in the first subsegment in each segment.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10130378 | 2001-06-23 | ||
| DE10130378A DE10130378A1 (en) | 2001-06-23 | 2001-06-23 | Method and device for controlling an internal combustion engine |
| PCT/DE2002/002191 WO2003001043A1 (en) | 2001-06-23 | 2002-06-15 | Method and device for controlling an internal combustion engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP1402164A1 EP1402164A1 (en) | 2004-03-31 |
| EP1402164B1 true EP1402164B1 (en) | 2010-01-20 |
Family
ID=7689234
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP02750790A Expired - Lifetime EP1402164B1 (en) | 2001-06-23 | 2002-06-15 | Method and device for controlling an internal combustion engine |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6882926B2 (en) |
| EP (1) | EP1402164B1 (en) |
| JP (1) | JP4099448B2 (en) |
| DE (2) | DE10130378A1 (en) |
| WO (1) | WO2003001043A1 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10327563A1 (en) * | 2003-06-18 | 2005-01-05 | Robert Bosch Gmbh | Method for operating an internal combustion engine |
| JP2006029287A (en) * | 2004-07-21 | 2006-02-02 | Nikki Co Ltd | Fuel injection valve driving unit |
| JP2006029285A (en) * | 2004-07-21 | 2006-02-02 | Nikki Co Ltd | Fuel injection control unit |
| DE102008039564B4 (en) * | 2008-08-25 | 2018-06-21 | Continental Automotive Gmbh | Method for processing tasks and system with a first and a second control device |
| JP2010196619A (en) * | 2009-02-26 | 2010-09-09 | Toyota Motor Corp | Control system of internal combustion engine |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2485641A1 (en) * | 1980-06-26 | 1981-12-31 | Renault | METHOD AND APPARATUS FOR ELECTRONIC IGNITION CONTROL FOR INTERNAL COMBUSTION ENGINE |
| JPS5751921A (en) * | 1980-09-16 | 1982-03-27 | Honda Motor Co Ltd | Fuel controller for internal combustion engine |
| US4791569A (en) * | 1985-03-18 | 1988-12-13 | Honda Giken Kogyo Kabushiki Kaisha | Electronic control system for internal combustion engines |
| DE3520998A1 (en) * | 1985-06-12 | 1986-12-18 | Robert Bosch Gmbh, 7000 Stuttgart | DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE |
| DE3605820A1 (en) * | 1986-02-22 | 1987-08-27 | Bosch Gmbh Robert | DEVICE FOR CONTROLLING AN INTERNAL COMBUSTION ENGINE |
| DE3608321A1 (en) * | 1986-03-13 | 1987-09-17 | Pierburg Gmbh & Co Kg | DEVICE FOR DETECTING THE CYLINDER-RELATED CRANKSHAFT POSITION |
| JPH02308952A (en) * | 1989-05-24 | 1990-12-21 | Kokusan Denki Co Ltd | Control device for internal combustion engine |
| US4962743A (en) * | 1989-06-06 | 1990-10-16 | Cummins Engine Company, Inc. | Injection rate control cam |
| US5070727A (en) | 1990-11-16 | 1991-12-10 | General Motors Corporation | Crankshaft angular position detecting apparatus |
| DE4210559C2 (en) | 1992-03-31 | 2000-12-14 | Bosch Gmbh Robert | Device for controlling processes dependent on operating parameters of internal combustion engines |
| IT1266914B1 (en) * | 1994-08-05 | 1997-01-21 | Magneti Marelli Spa | POWER-ASSISTED GEARBOX CONTROL SYSTEM. |
| DE4444751A1 (en) * | 1994-12-15 | 1996-06-20 | Bosch Gmbh Robert | System for controlling an internal combustion engine |
| DE19734595A1 (en) * | 1997-08-09 | 1999-02-11 | Bosch Gmbh Robert | Procedure for determining segment times |
| DE19854304B4 (en) | 1998-11-25 | 2010-11-25 | Robert Bosch Gmbh | Device for controlling an internal combustion engine |
-
2001
- 2001-06-23 DE DE10130378A patent/DE10130378A1/en not_active Ceased
-
2002
- 2002-06-15 DE DE50214181T patent/DE50214181D1/en not_active Expired - Lifetime
- 2002-06-15 JP JP2003507408A patent/JP4099448B2/en not_active Expired - Fee Related
- 2002-06-15 EP EP02750790A patent/EP1402164B1/en not_active Expired - Lifetime
- 2002-06-15 WO PCT/DE2002/002191 patent/WO2003001043A1/en active Application Filing
- 2002-06-15 US US10/362,256 patent/US6882926B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE10130378A1 (en) | 2003-01-02 |
| WO2003001043A1 (en) | 2003-01-03 |
| EP1402164A1 (en) | 2004-03-31 |
| US6882926B2 (en) | 2005-04-19 |
| DE50214181D1 (en) | 2010-03-11 |
| US20040015286A1 (en) | 2004-01-22 |
| JP2004521250A (en) | 2004-07-15 |
| JP4099448B2 (en) | 2008-06-11 |
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