EP0365528B1 - System zur einstellung des drosselklappenwinkels - Google Patents

System zur einstellung des drosselklappenwinkels Download PDF

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Publication number
EP0365528B1
EP0365528B1 EP19880902799 EP88902799A EP0365528B1 EP 0365528 B1 EP0365528 B1 EP 0365528B1 EP 19880902799 EP19880902799 EP 19880902799 EP 88902799 A EP88902799 A EP 88902799A EP 0365528 B1 EP0365528 B1 EP 0365528B1
Authority
EP
European Patent Office
Prior art keywords
throttle valve
servo motor
throttle
difference
valve angle
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.)
Expired - Lifetime
Application number
EP19880902799
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0365528A1 (de
Inventor
Herbert Arnold
Michael Horbelt
Rüdiger Jautelat
Peter Werner
Manfred Mezger
Günther PLAPP
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 EP0365528A1 publication Critical patent/EP0365528A1/de
Application granted granted Critical
Publication of EP0365528B1 publication Critical patent/EP0365528B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
    • F02D31/001—Electric control of rotation speed
    • F02D31/002—Electric control of rotation speed controlling air supply
    • F02D31/003—Electric control of rotation speed controlling air supply for idle speed control
    • F02D31/004—Electric control of rotation speed controlling air supply for idle speed control by controlling a throttle stop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/16—End position calibration, i.e. calculation or measurement of actuator end positions, e.g. for throttle or its driving actuator

Definitions

  • the invention relates to a system for adjusting the throttle valve angle.
  • the invention is based on DE-OS 35 18 014, which proposes a method for controlling the idle speed of an internal combustion engine via an idle stop of the throttle valve, the position of which is changed by means of a servomotor via an electronic control device depending on the engine temperature and other parameters.
  • a measurement of the actual value of the speed is carried out when the throttle valve is attached to this idling stop and compared with the last measured and temporarily stored speed, whereby if a difference is found to be smaller than a predetermined value between the two values and after a predetermined period of time it does not differ changing difference of the idle stop of the throttle valve is changed by the servomotor so that the idle speed reaches the predetermined target speed.
  • DE-OS 33 22 240 proposes a safety emergency device for the idle operation of motor vehicles with digital idle filling regulations.
  • the idle actuator is controlled digitally by a microcomputer via an output stage circuit with a variable duty cycle.
  • the direction of movement of the actuator and thus its position are controlled by two control lines. Since short circuits in this control line no longer make it possible to control the actuator to regulate the idling speed, safety monitoring is necessary, which in the present case is carried out by returning these control signals to the microcomputer and then comparing them with the position of the actuator.
  • the disadvantage of such a monitoring device is the additional circuitry and the assignment of inputs to the control, which can then no longer be used for other purposes.
  • the system for adjusting the throttle valve angle with the features of the main claim has the advantage that no additional circuitry is required to detect the above-mentioned accident, since the existing devices can be used to monitor the idle throttle valve angle.
  • the electronic control unit recognizes the presence of a malfunction and can initiate countermeasures in the form of a reversal of direction of the actuation or stopping of the actuation of the servomotor.
  • the system according to the invention is able to detect both malfunctions in the area of the idle servomotor and its control outside as well as within the idle state and to initiate appropriate countermeasures to improve the functional reliability of the idle control.
  • the actuation of the servomotor can also be monitored as to whether the servomotor is moving the idling stop in the correct direction, namely in the direction of the setpoint. If the actuator is operated in the wrong direction, a change of direction can be initiated immediately.
  • the actual / setpoint query can be carried out cyclically done at high frequency.
  • the block diagram shown in FIG. 1 contains a servomotor 1 for setting an idle stop 2.
  • the idle stop 2 can be varied in the direction of arrow a.
  • a throttle valve 3 with the throttle valve angle ⁇ bears against the idling stop 2.
  • An engine control MS receives information about the engine temperature T, the speed n, the throttle valve angle ⁇ and, via a signal line K, the information about whether the throttle valve 3 is present at a contact 4 of the stop 2 at a plurality of control inputs.
  • the engine control MS has access to a memory 5 in which setpoints and actual values of throttle valve angles are stored.
  • the motor control MS actuates the servomotor 1 via a motor control 6 and an output stage 7 in order to bring the stop 2 into the respectively required position.
  • the diagram shown in FIG. 2 shows the throttle valve angle ⁇ and the speed n as a function of time.
  • the position of the idle stop is indicated by vertical arrows S1 to S5.
  • the solid lines for speed n and throttle valve angle ⁇ show the ⁇ -n dependence starting from idling at time t1 up to the maximum throttle valve angle ⁇ at t2.
  • the broken ⁇ -n lines indicate the case when the throttle valve angle ⁇ is reduced at a time t3 by completely withdrawing the pedestrian.
  • the position of the idle stop changes by a corresponding adjustment from position S1 to position S2, in order to briefly set a higher idle speed when the pedestrian is suddenly withdrawn.
  • This is changed in the direction of position S1, since this position S1 represents the throttle valve angle ⁇ 1 previously stored in memory 5.
  • the idling stop 2 can be moved back to position S5, which corresponds to position S1, within a fraction of a second.
  • the engine control system MS could recognize from the temporarily stored throttle valve angle that there is a malfunction, since the idle stop 2 moves away from the correct throttle valve angle ⁇ . The motor control MS could then interrupt the actuation of the servomotor 1 or initiate a reversal of direction.
  • the setpoint value for the idling stop is the throttle valve angle ⁇ 1 in the exemplary embodiment shown. This setpoint is only changed when the throttle valve 3 is in contact with the stop 2 under changed operating conditions by the engine control MS. If a new setpoint is specified, the engine control MS can also monitor in this case whether the servomotor 1 moves the idle stop 2 in the correct direction, since when the throttle valve 3 is applied, the position of the idle stop 2 is checked via the throttle valve angle ⁇ can be.
  • the function of the system according to the invention is explained on the basis of the flow chart shown in FIG.
  • the flow chart shown in FIG. 3 comprises 16 program steps P1 to P16.
  • the program steps are processed by the motor control MS (FIG. 1) in a fixed grid.
  • program step P1 it is first determined whether there is idle operation. If this is not the case, the RAM cells ZAEHLER and ⁇ DIFF required for monitoring the servomotor control, which are stored in the memory 5, are set in a defined manner. this happens in program steps P2, P3.
  • ⁇ DIFF contains the difference between the last measured and temporarily stored throttle valve angle ⁇ 1 and the throttle valve angle ⁇ 2.
  • a value A is temporarily stored in the memory 5, the value A corresponding to the difference between ⁇ 1 and the current throttle valve value ⁇ 2.
  • program step P5 it is checked whether the content of the RAM cell COUNTER is greater than or equal to the value MAX1.
  • the value MAX1 corresponds to the maximum number of servo drive attempts with the requirement to reduce the difference between ⁇ 1 and ⁇ 2. If this value MAX1 has not yet been exceeded, the program step P6 asks whether the amount of A is greater than or equal to a throttle valve threshold ⁇ SCHW.
  • ⁇ SCHW represents an insensitivity range in which there is no actuation of the servomotor.
  • the value A for the next processing grid is transferred to ⁇ DIFF in program step P16. If the insensitivity range is exceeded, it is checked in program step P7 whether the amount of the current difference has increased compared to the amount of the difference from the previous processing grid, stored in ⁇ DIFF. If this is not the case, the program jumps to step P16. Otherwise, in program step P8 the current throttle valve value ⁇ 1 (i) is compared with the throttle valve value ⁇ 1 (i-1) from the last processing grid.
  • This procedure prevents the new throttle valve value ⁇ 1 from changing the throttle valve difference in such a way that a fault is erroneously recognized.
  • ⁇ 1 (i) and ⁇ 1 (i-1) are not identical, the program is continued at program step P16. If they are identical, the servomotor 1 is controlled in program step P9 so that the difference between ⁇ 1 and ⁇ 2 becomes smaller. In program step P10, the content of ZAEHLER is incremented. The newly calculated throttle valve difference is then transferred from A to ⁇ DIFF in program step P16. If it is determined in program step P5 that the content of ZAEHLER is greater than or equal to MAX1, the content of ZAEHLER is compared with MAX2 at P11. The difference between MAX2 and MAX1 corresponds to the maximum number of servo drive pulses for the drive mode "stopping the motor with high potential".
  • program step P12 additionally checks whether the throttle valve angle ⁇ 2 (i) has changed compared to the throttle valve angle ⁇ 2 (i-1) from the previous processing grid. If this is not the case, it can be assumed that the servomotor is stopped and continues to stop when it is activated with high potential. In the other case, the content is incremented by ZAEHLER.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
EP19880902799 1987-06-19 1988-03-30 System zur einstellung des drosselklappenwinkels Expired - Lifetime EP0365528B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873720255 DE3720255A1 (de) 1987-06-19 1987-06-19 System zur einstellung des drosselklappenwinkels
DE3720255 1987-06-19

Publications (2)

Publication Number Publication Date
EP0365528A1 EP0365528A1 (de) 1990-05-02
EP0365528B1 true EP0365528B1 (de) 1991-10-30

Family

ID=6329884

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880902799 Expired - Lifetime EP0365528B1 (de) 1987-06-19 1988-03-30 System zur einstellung des drosselklappenwinkels

Country Status (6)

Country Link
US (1) US5046467A (ko)
EP (1) EP0365528B1 (ko)
JP (1) JPH02503939A (ko)
KR (1) KR0121325B1 (ko)
DE (2) DE3720255A1 (ko)
WO (1) WO1988010365A1 (ko)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4221768C2 (de) * 1992-07-02 2002-11-07 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung einer Verstelleinrichtung in einem Fahrzeug
JP2836455B2 (ja) * 1993-09-08 1998-12-14 三菱自動車工業株式会社 アイドルスピードコントロールシステムの診断方法
JP3627333B2 (ja) * 1995-12-27 2005-03-09 日産自動車株式会社 圧力スイッチの診断装置
US5749343A (en) * 1996-10-07 1998-05-12 General Motors Corporation Adaptive electronic throttle control
US5757596A (en) * 1997-01-21 1998-05-26 Ford Global Technologies, Inc. Motor control assembly and method of controlling same
DE102004053265A1 (de) * 2004-11-04 2006-05-11 Robert Bosch Gmbh Verfahren und Vorrichtung zur Adaption eines Anschlags eines elektrisch angesteuerten Stellgliedes
KR100811754B1 (ko) * 2006-10-10 2008-03-11 현대자동차주식회사 디젤엔진의 스월 컨트롤 액츄에이터의 링키지 길이 및 각도설정 방법 및 그 시스템
DE102011008737B4 (de) * 2011-01-17 2021-05-06 Andreas Stihl Ag & Co. Kg Verbrennungsmotor, Diagnosegerät für einen Verbrennungsmotor und Verfahren zur Einstellung eines Verbrennungsmotors

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57108435A (en) * 1980-12-24 1982-07-06 Fuji Heavy Ind Ltd Speed controller of engine
DE3100825A1 (de) * 1981-01-14 1982-08-12 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum steuern der zuend- und/oder kraftstoffeinspritz- und/oder getriebeschaltvorgaenge bei brennkraftmaschinen
JPS57131834A (en) * 1981-02-10 1982-08-14 Automob Antipollut & Saf Res Center Engine speed control device
DE3235497A1 (de) * 1981-09-25 1983-04-14 Mitsubishi Denki K.K., Tokyo Steuervorrichtung fuer eine brennkraftmaschine
DE3322240A1 (de) * 1982-07-23 1984-01-26 Robert Bosch Gmbh, 7000 Stuttgart Sicherheits-notlaufeinrichtung fuer den leerlaufbetrieb von kraftfahrzeugen
DE3322074A1 (de) * 1982-07-23 1984-01-26 Robert Bosch Gmbh, 7000 Stuttgart Notlaufeinrichtung fuer mikrocomputergesteuerte systeme
DE3322242A1 (de) * 1982-07-23 1984-01-26 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zur funktionsueberwachung elektronischer geraete, insbesondere mikroprozessoren
JPS5932645A (ja) * 1982-08-16 1984-02-22 Mazda Motor Corp エンジンのアイドル回転制御装置
WO1987000886A1 (en) * 1983-04-08 1987-02-12 Miyazaki Masaaki Apparatus for controlling idling speed of internal-combustion engine
DE3510176A1 (de) * 1984-08-16 1986-02-27 Robert Bosch Gmbh, 7000 Stuttgart Elektronisches fahrpedal fuer ein kraftfahrzeug
DE3518014C2 (de) * 1985-05-18 1995-07-06 Bosch Gmbh Robert Verfahren zur Einstellung einer Drosselklappe einer Brennkraftmaschine im Leerlauf
KR900001627B1 (ko) * 1986-05-12 1990-03-17 미쓰비시전기 주식회사 내연기관의 아이들회전수 제어장치
DE3827408A1 (de) * 1988-08-12 1990-02-15 Vdo Schindling Stelleinrichtung fuer eine zumesseinrichtung einer brennkraftmaschine

Also Published As

Publication number Publication date
WO1988010365A1 (en) 1988-12-29
KR0121325B1 (ko) 1997-11-24
US5046467A (en) 1991-09-10
KR890701882A (ko) 1989-12-22
DE3865967D1 (de) 1991-12-05
EP0365528A1 (de) 1990-05-02
JPH02503939A (ja) 1990-11-15
DE3720255A1 (de) 1988-12-29

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