EP0385969A1 - Dispositif de commande et de régulation d'un moteur diesel - Google Patents

Dispositif de commande et de régulation d'un moteur diesel Download PDF

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Publication number
EP0385969A1
EP0385969A1 EP90890050A EP90890050A EP0385969A1 EP 0385969 A1 EP0385969 A1 EP 0385969A1 EP 90890050 A EP90890050 A EP 90890050A EP 90890050 A EP90890050 A EP 90890050A EP 0385969 A1 EP0385969 A1 EP 0385969A1
Authority
EP
European Patent Office
Prior art keywords
signal
soot
value
map
setpoint
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
EP90890050A
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German (de)
English (en)
Other versions
EP0385969B1 (fr
Inventor
Christian Dipl.-Ing. Augesky
Wolfgang Dipl.-Ing. Bittinger
Michael Dipl.-Ing. Heiss
Artur Dr. Ing. Seibt
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.)
Automotive Diesel GmbH
Original Assignee
Voestalpine Metal Forming GmbH
Automotive Diesel 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 Voestalpine Metal Forming GmbH, Automotive Diesel GmbH filed Critical Voestalpine Metal Forming GmbH
Priority to AT90890050T priority Critical patent/ATE81890T1/de
Publication of EP0385969A1 publication Critical patent/EP0385969A1/fr
Application granted granted Critical
Publication of EP0385969B1 publication Critical patent/EP0385969B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1466—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being a soot concentration or content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • An adaptive control of the exhaust gas turbidity caused by soot at full load has become known from DE-AS-36 38 474.
  • the soot content in the exhaust gases is determined using an electro-optic soot sensor. If the soot sensor detects an excessive amount of soot, this amount is reduced in small steps in a device for adjusting the full-load injection quantity until the predetermined number of smoke is reached again. If the number of smoke falls below the predetermined number, the full-load injection quantity can be gradually increased again until the predetermined number of smoke is reached.
  • a regulation depending on the speed or other operating parameters is not described in this document.
  • EP-A2-148 107 further describes a full-load control of a diesel engine, which is based on the measured value of a soot value sensor, which obviously works on an inductive basis. Maximum amounts of fuel are recorded in a fixed full-load map. Depending on the determined soot value, the lower limits (signal T L ) contained in the full-load map can be increased by increments ⁇ T L.
  • the control according to the soot value is always based on a fixed map, which means that due to the only gradual increase in the maximum fuel value, it is not optimally possible to adapt to rapidly changing processes, such as a sudden depression of the accelerator pedal for full acceleration.
  • DE-A1-28 29 958 relates to the control of an Otto engine according to the ⁇ value.
  • the oxygen content of the exhaust gases is measured before and after a catalyst 170 with O2 sensors 184, 186, the measured values are processed in a circuit 200 and fed to a ⁇ control circuit 246.
  • the "history" of the engine (last measured values) must be temporarily stored in a short-term memory 250 in order to also have an operating point available if a correction is made to the working point in time that is earlier than the delay time Setting value is necessary.
  • the amount of the delay time is calculated from the speed and absolute pressure.
  • this known controller has an adaptive characteristic map, no limit value is determined, but is normally regulated according to the ⁇ value, which, combined with the description of the delay time, leads to a high computing effort and corresponding computing times, which in connection with the the present problem are undesirable.
  • the object of the invention is to provide a control system for a diesel engine, the starting point of which is primarily the actual speed, but which also takes into account the soot content in the exhaust gases and ensures full load limitation which is adapted to different operating conditions.
  • a control system for a diesel engine the starting point of which is primarily the actual speed, but which also takes into account the soot content in the exhaust gases and ensures full load limitation which is adapted to different operating conditions.
  • Particular attention should be paid to the fact that soot measurement and evaluation is delayed for physical reasons, for example because the measurement is carried out in the exhaust pipe at a certain distance from the exhaust valves.
  • the limitation should be quick, but the machine should have the maximum possible amount of fuel available in every operating situation.
  • the object of the invention is achieved with a device of the type mentioned at the outset, which is designed in accordance with the characterizing part of claim 1.
  • the invention enables a quickly effective full load limitation with optimal utilization of the machine performance and consideration of the maximum permissible soot value, whereby manufacturing tolerances and in particular signs of aging do not prevent the machine performance from being exploited to the smoke limit.
  • FIG. 1 shows a block diagram of a device according to the invention
  • FIG. 2 shows a diagram of the time sequence of the calculation processes in a device according to the invention
  • FIGS. 3 and 4 show this flow in structure diagrams
  • FIG. 5 shows a variant of the invention in FIG a section of a block diagram according to FIG. 1.
  • Fig. 1 shows schematically a diesel engine 1 with an injection pump 2, the control rod in a known manner electro mechanically, according to a signal RW, can be adjusted.
  • a basic controller 3 which calculates a control rod control signal RW B as a function of supplied operating variable signals.
  • the essential operating variable signals are a speed signal n originating from a speed sensor 4 and an accelerator pedal signal f originating from an accelerator position transmitter 5.
  • further operating variables such as, for example, the machine temperature, the air pressure, etc., can be taken into account, which is indicated by sensors 6.
  • a soot value sensor 8 is provided in or on the exhaust pipe 7 of the machine 1, which sensor sensor evaluation, for example by optical turbidity measurement or other slower measurement methods 9 generates a signal AG i corresponding to the actual value of the soot value.
  • the soot value AG i determined during operation influences a maximum permissible control signal RW M for the control rod.
  • the selection stage 10 contains a memory 10 'and, together with this memory, is set up to emit a status signal S which indicates whether the limitation at the time t M was effective or not.
  • a starting point is that the soot value sensor 8 or the sensor evaluation 9 has a measurement delay ⁇ t, thus related a soot value signal AG i (t v - ⁇ t) is present at the time tv of the setpoint comparison.
  • This measurement delay is system-related and caused by one or more of the following factors: runtime of the exhaust gases up to the sensor, response time of the sensor, duration of the evaluation in the sensor evaluation.
  • the soot value signal AG i is fed to a subtractor 11, to which a maximum target soot value AG MS is fed as a second signal.
  • this value can be constant and stored in a setpoint memory.
  • the maximum soot value AG MS (t M ) is generated in a setpoint map 12, specifically as a function of operating variables, such as at least the average speed n (t M ), which lie behind the measurement dead time ⁇ t and are stored in a memory 13.
  • This memory 13 is shown in Fig. 1 as part of the basic controller 3, but it should be clear that the division into blocks is only for better understanding.
  • the device according to the invention is largely implemented in software in one or more microcomputers. If the setpoint map 12 is not only the average speed n (t M ) but other operating parameters, such as the machine temperature at time (t M ), there is a multi-dimensional map instead of a two-dimensional one.
  • the output signal ⁇ AG AG MS - AG i of the subtractor 11 is fed to a control unit 14 ', which is formed in FIG. 1 together with the subtractor 11 as a limiting controller 14.
  • this limit controller 14 or the control unit 14 ' also contains the status signal S already mentioned.
  • the limit controller outputs a correction signal ⁇ RW for an adaptive map 15 in a manner described in more detail below.
  • this adaptive characteristic map 15 is a memory for working point-dependent values of the maximum permissible control signal RW M , these values of the respective soot situation adjusted, so can be changed.
  • RW M maximum permissible control signal
  • the characteristic diagram 15 is supplied with strobe signals sync-in and sync-out by the basic controller. Furthermore, the map receives 15 operating point vector signals AP (to) or AP (t M ), which in the simplest case are signals of the average speed n (to) or n (t M ) are, however, may also contain other operating variable signals which are representative, for example, of the machine temperature, air pressure, boost pressure etc.
  • the operating point vector signal AP (t M ) is available in the memory 13 for operating variable values which are past the measurement dead time ⁇ t; it is required for the correct reading in of the correction signal ⁇ RW.
  • a very specific, maximum permissible control signal RM M is thus available for the limitation, depending on the working point vector AP (to) currently present.
  • the limiting controller 14 can also be set up, for example, to emit a correction signal ⁇ RW which is proportional to the difference ⁇ AG.
  • FIGS. 3 and 4 The course of the calculations is shown in FIGS. 3 and 4 in structure diagrams and, moreover, in FIG. 2 in a time diagram.
  • the operating variable for determining the maximum permissible soot value AG MS on the one hand and for controlling the adaptive map on the other hand not only the average speed n but also the machine temperature 9 is used.
  • the functional sequence is also evident from the diagram according to FIG. 2. This process begins at any time t ⁇ 3.
  • the basic controller (computer level A) reads in the measured values that it needs for control and provides the operating point vector of t ⁇ 3 (INPUT).
  • the operating point AP (t ⁇ 3) is stored in the memory 13. The values stored there will later be required for the control measurement of the setpoint map 12 and the adaptive map 15.
  • a major advantage of the invention lies in its independence from the measurement dead time required for soot measurement and the processing time which fluctuates as a result of different computer loads. Thanks to the invention, the full-load limitation based on a constant soot measurement can be carried out quickly and with the best possible use of the maximum possible machine power.
  • the basic controller 1 calculates an associated control signal RW Bi for each of, for example, six pump nozzles 16 i (in the case of a six-cylinder machine), which runs through the minimum value selection stage 10. This stage 10 is followed by a cylinder selection unit 17, which is controlled by a selection signal i originating from the basic controller 10.
  • the individual control signals RW1 to RW6 are still a latch 18 supplied and from here to the electromechanical actuator drives of the individual pump nozzles 16 i , the necessary driver circuits and possibly servo circuits are not shown for the sake of simplicity. Further details regarding the controlled single cylinder control can be found, for example, in the applicant's application DE 38 22 582, where further references to the technical background are also mentioned.

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  • 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)
EP90890050A 1989-02-27 1990-02-26 Dispositif de commande et de régulation d'un moteur diesel Expired - Lifetime EP0385969B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90890050T ATE81890T1 (de) 1989-02-27 1990-02-26 Einrichtung zum steuern und regeln einer dieselbrennkraftmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3906083 1989-02-27
DE3906083A DE3906083A1 (de) 1989-02-27 1989-02-27 Einrichtung zum steuern und regeln einer dieselbrennkraftmaschine

Publications (2)

Publication Number Publication Date
EP0385969A1 true EP0385969A1 (fr) 1990-09-05
EP0385969B1 EP0385969B1 (fr) 1992-10-28

Family

ID=6375034

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90890050A Expired - Lifetime EP0385969B1 (fr) 1989-02-27 1990-02-26 Dispositif de commande et de régulation d'un moteur diesel

Country Status (4)

Country Link
EP (1) EP0385969B1 (fr)
AT (1) ATE81890T1 (fr)
DE (2) DE3906083A1 (fr)
ES (1) ES2036112T3 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1705356A2 (fr) * 2005-03-21 2006-09-27 Robert Bosch Gmbh Procédé et dispositif de commande d'un moteur à combustion interne
AT11003U3 (de) * 2009-10-28 2010-09-15 Avl List Gmbh Verfahren zum betreiben einer prüfanordnung
AT10998U3 (de) * 2009-10-28 2010-09-15 Avl List Gmbh Verfahren zum betreiben einer prüfanordnung
AT11000U3 (de) * 2009-10-28 2010-09-15 Avl List Gmbh Verfahren zum betreiben einer prüfanordnung
AT10999U3 (de) * 2009-10-28 2010-09-15 Avl List Gmbh Verfahren zum betreiben einer prüfanordnung
RU2514544C2 (ru) * 2012-07-10 2014-04-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенская государственная сельскохозяйственная академия" Устройство контроля полноты загрузки дизельного двигателя
RU2671552C1 (ru) * 2017-12-12 2018-11-01 федеральное государственное бюджетное образовательное учреждение высшего образования "Пензенский государственный аграрный университет" Устройство контроля полноты загрузки тракторного дизеля

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4437947C2 (de) * 1994-10-24 1998-03-19 Daimler Benz Ag Verfahren zur Regelung der Zuführung von wenigstens einem Zusatzfluidstrom in einen Ansaugtrakt einer Brennkraftmaschine und Vorrichtung zur Durchführung des Verfahrens
DE19750226C1 (de) * 1997-11-13 1998-10-29 Daimler Benz Ag Motorregelsystem für einen Dieselmotor
US7340339B1 (en) * 2003-02-14 2008-03-04 Caterpillar Inc. Power management system
EP1731743A3 (fr) * 2005-06-10 2007-02-14 Frank Hille Procédé de commande d'un système d'injection et système d'injection avec capteur de particules pour moteurs à combustion interne
SE1151075A1 (sv) * 2011-11-14 2013-05-15 Scania Cv Ab Förfarande och system för reglering av en förbränningsmotor

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130095A (en) * 1977-07-12 1978-12-19 General Motors Corporation Fuel control system with calibration learning capability for motor vehicle internal combustion engine
US4282842A (en) * 1977-07-22 1981-08-11 Hitachi, Ltd. Fuel supply control system for internal combustion engine
EP0105828A2 (fr) * 1982-10-04 1984-04-18 Ail Corporation Méthode et appareil pour commander la recirculation de gaz d'échappement pour moteurs Diesel en fonction du niveau de particules dans l'échappement
EP0148107A2 (fr) * 1983-12-27 1985-07-10 Ail Corporation Méthode et appareil de commande du couple d'un moteur à combustion en fonction ou niveau des fumées d'échappement
GB2197093A (en) * 1986-11-04 1988-05-11 Ford Motor Co Adaptive air fuel control using hydrocarbon variability feedback
DE3822582A1 (de) * 1988-07-04 1990-02-08 Voest Alpine Automotive Einrichtung zum steuern und regeln der brennkraftmaschine eines fahrzeuges

Family Cites Families (6)

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DE2820807A1 (de) * 1978-05-12 1979-11-22 Bosch Gmbh Robert Einrichtung zum einstellen eines mengenbestimmenden gliedes einer kraftstoffeinspritzpumpe bei einer brennkraftmaschine mit selbstzuendung
JPS575526A (en) * 1980-06-11 1982-01-12 Diesel Kiki Co Ltd Method of detecting injection flow in fuel injection valve
DE3408215A1 (de) * 1984-02-01 1985-08-01 Robert Bosch Gmbh, 7000 Stuttgart Steuer- und regelverfahren fuer die betriebskenngroessen einer brennkraftmaschine
DE3539395A1 (de) * 1985-11-07 1987-05-14 Bosch Gmbh Robert Verfahren und einrichtung zur adaption der gemischsteuerung bei brennkraftmaschinen
DE3638474A1 (de) * 1985-11-19 1987-05-21 Volkswagen Ag Dieselbrennkraftmaschine
DE3603137C2 (de) * 1986-02-01 1994-06-01 Bosch Gmbh Robert Verfahren und Einrichtung zur Steuerung/Regelung von Betriebskenngrößen einer Brennkraftmaschine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4130095A (en) * 1977-07-12 1978-12-19 General Motors Corporation Fuel control system with calibration learning capability for motor vehicle internal combustion engine
US4282842A (en) * 1977-07-22 1981-08-11 Hitachi, Ltd. Fuel supply control system for internal combustion engine
EP0105828A2 (fr) * 1982-10-04 1984-04-18 Ail Corporation Méthode et appareil pour commander la recirculation de gaz d'échappement pour moteurs Diesel en fonction du niveau de particules dans l'échappement
EP0148107A2 (fr) * 1983-12-27 1985-07-10 Ail Corporation Méthode et appareil de commande du couple d'un moteur à combustion en fonction ou niveau des fumées d'échappement
GB2197093A (en) * 1986-11-04 1988-05-11 Ford Motor Co Adaptive air fuel control using hydrocarbon variability feedback
DE3822582A1 (de) * 1988-07-04 1990-02-08 Voest Alpine Automotive Einrichtung zum steuern und regeln der brennkraftmaschine eines fahrzeuges

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 7, no. 246 (M-253) 02 November 83, & JP-A-58 133453 (TOYO KOGYO K.K.) 09 August 83, *
PATENT ABSTRACTS OF JAPAN vol. 8, no. 244 (M-337) 09 November 84, & JP-A-59 120730 (ISUZU JIDOSHA KK.) 12 Juli 84, *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1705356A2 (fr) * 2005-03-21 2006-09-27 Robert Bosch Gmbh Procédé et dispositif de commande d'un moteur à combustion interne
EP1705356A3 (fr) * 2005-03-21 2010-10-06 Robert Bosch Gmbh Procédé et dispositif de commande d'un moteur à combustion interne
AT11003U3 (de) * 2009-10-28 2010-09-15 Avl List Gmbh Verfahren zum betreiben einer prüfanordnung
AT10998U3 (de) * 2009-10-28 2010-09-15 Avl List Gmbh Verfahren zum betreiben einer prüfanordnung
AT11000U3 (de) * 2009-10-28 2010-09-15 Avl List Gmbh Verfahren zum betreiben einer prüfanordnung
AT10999U3 (de) * 2009-10-28 2010-09-15 Avl List Gmbh Verfahren zum betreiben einer prüfanordnung
RU2514544C2 (ru) * 2012-07-10 2014-04-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Пензенская государственная сельскохозяйственная академия" Устройство контроля полноты загрузки дизельного двигателя
RU2671552C1 (ru) * 2017-12-12 2018-11-01 федеральное государственное бюджетное образовательное учреждение высшего образования "Пензенский государственный аграрный университет" Устройство контроля полноты загрузки тракторного дизеля

Also Published As

Publication number Publication date
ATE81890T1 (de) 1992-11-15
DE3906083A1 (de) 1990-08-30
DE59000383D1 (de) 1992-12-03
ES2036112T3 (es) 1993-05-01
EP0385969B1 (fr) 1992-10-28
DE3906083C2 (fr) 1991-06-13

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