EP0256268A1 - Drehzahlbegrenzer für Kraftfahrzeuge - Google Patents

Drehzahlbegrenzer für Kraftfahrzeuge Download PDF

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Publication number
EP0256268A1
EP0256268A1 EP19870109445 EP87109445A EP0256268A1 EP 0256268 A1 EP0256268 A1 EP 0256268A1 EP 19870109445 EP19870109445 EP 19870109445 EP 87109445 A EP87109445 A EP 87109445A EP 0256268 A1 EP0256268 A1 EP 0256268A1
Authority
EP
European Patent Office
Prior art keywords
speed
limiter
reference signal
vehicle
circuit
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.)
Withdrawn
Application number
EP19870109445
Other languages
German (de)
English (en)
French (fr)
Inventor
Manfred Fichter
Gerhard Mutz
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.)
Digital Kienzle Computersysteme GmbH and Co KG
Original Assignee
Mannesmann Kienzle 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 Mannesmann Kienzle GmbH filed Critical Mannesmann Kienzle GmbH
Publication of EP0256268A1 publication Critical patent/EP0256268A1/de
Withdrawn legal-status Critical Current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
    • F02D31/001—Electric control of rotation speed
    • F02D31/007—Electric control of rotation speed controlling fuel supply
    • F02D31/009—Electric control of rotation speed controlling fuel supply for maximum speed control
    • 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
    • F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
    • F02D2200/501—Vehicle speed

Definitions

  • a speed limiter intended for retrofitting is essentially identical to that of a usually more widespread speed limiter or a limiter which, based on a defined speed and speed limit value, permits actuation of the fuel metering device of a motor vehicle engine independently of the accelerator pedal position .
  • a group of gears is not without problems, because in the border area between the non-limited shift group and the limited shift group, the speed of the vehicle cannot be increased even when shifting up and thus between a gear with an uneconomically high one Speed and a gear that does not allow an increase in speed due to the sudden speed limitation in the driving situation concerned, will be switched back and forth.
  • the object of the present invention was therefore to improve the acceptance of a speed limiter, on the one hand by measures to increase the control and thus driving comfort, and on the other hand by means with which a speed limiter can be adapted to typical applications of the vehicle, with which optimal economic and ecological Effects are achievable.
  • the electronic controller is linked to a speed measuring circuit and comprises a circuit arrangement with which, depending on the speed, a constant change of the speed limit value at least within a partial speed range can be programmed.
  • a preferred exemplary embodiment is characterized in that in the electronic controller in which the control deviation supplied to the control amplifier is determined by combining the controlled variable with a reference value, the circuit arrangement serves as a reference signal generator and that the reference signal generator is designed in such a way that different reference signal characteristics can be selected.
  • the proposed solution which is based on the idea of controlling the envisaged speed limitation as a function of the vehicle speed, avoids the disadvantages with regard to driving comfort, both of a general limitation and of a limitation which begins suddenly, by means of a suitable, presettable transition function. It also makes it possible to optionally provide an application-specific or vehicle-specific limitation, that is to say, for example, that the engine speeds of vehicles in local or inner-city distribution traffic can be limited in a lower speed range, while in long-distance vehicles where full use of the engine speed is possible during pass journeys must be, a limitation in the upper speed range can be made.
  • the speed limiter according to the invention can also be used not only as an autonomous system.
  • the determined speed control deviation can, for example, be fed to the control amplifier of a speed limiter via a suitable diode coupling, so that the speed limiter in question is expanded to a speed limiter with speed-dependent speed limitation.
  • FIG. 2 corresponds to a requirement profile of a vehicle of the local distribution traffic, where it is important to throttle the engine speeds relatively strongly in a lower speed range between, for example, 0 and 40 km / h.
  • a speed setting range of up to 30% is provided. As the speed increases, this throttling is steadily eliminated within a transition range of approx. 15 km / h, so that the maximum engine speed can be used at higher speeds, which can only be driven outside of the city anyway.
  • the limiting characteristics FIG. 3 is reciprocal to the limiting characteristic FIG. 2 selected and intended for vehicles that are mainly used in long-distance transport, d. H. there is no speed limitation in a lower speed range, at higher speeds a limitation is effective after a suitable transition range, which in turn can be selected within a speed range of 30%.
  • the gradient of the speed limitation characteristics in the transition areas which is preferably designed for 10%, can also be selected within certain limits, so that longer or shorter transition areas can be defined.
  • the speed-dependent break points A, A ⁇ and B, B ⁇ of the speed limitation characteristics can be selected and preset.
  • pulses generated by a speed sensor 1 as well as by a speed sensor 2 are proportional to the engine speed, formed into time-constant pulses in respectively assigned pulse shapers 3 and 4 and converted into corresponding voltage values proportional to the measured values in downstream digital-to-analog converters 5 and 6.
  • the potentiometers 7 and 8 assigned to the pulse shapers serve to adjust the pulse width and thus to correct the slope of the respective characteristic curves.
  • the speed measuring branch is connected downstream, as FIG. 4 also shows a circuit arrangement 9 which serves as a reference signal generator and which provides reciprocal, speed-dependent voltage characteristic curves with regard to the selectable speed limitation characteristics.
  • the voltage values W of the reference signal generator 9 and the speed-proportional voltage values X are rounded to a control deviation X W , which is present at the input of a control amplifier 11 acting as a window amplifier.
  • control signals X are formed in the control amplifier 11 from the suitably modulated control deviation X W when a certain switching threshold range is exceeded or fallen below.
  • the control signals control, via separate channels, an operating circuit 12, which delivers a manipulated variable Y, of an actuating motor 14 arranged in an actuating unit 13. which in turn acts in a manner known per se on the fuel metering device of the vehicle engine via a coupling element which is not shown in the invention and which is inserted into the gas linkage of the vehicle in question.
  • the in FIG. 5 illustrated circuit example of the reference signal generator 9 shows an operational amplifier 16, the one on the output side, on the one hand, via a resistor 17, which is supplied with speed measurement values supplied by the digital / analog converter 5 and, on the other hand, which is connected to a voltage divider formed from the resistors 18 and 19 and the potentiometer 20.
  • the potentiometer 20 is used to set a voltage value at which the speed-dependent control is to start, ie the output voltage of the operational amplifier 16 changes, in this case increases. This point is reached when the voltage-proportional voltage, which has a degressive curve, falls below the voltage value set by means of the potentiometer 20.
  • the slope of the voltage curve at the output of operational amplifier 16 can be determined by resistors 17 and 21, while diode 22 and resistor 23 serve to decouple the output of operational amplifier 16.
  • the output of the operational amplifier 24 is connected in parallel with a resistor 31 to a contact 33 via a diode 29 and a resistor 30.
  • the output of the operational amplifier 16 is also assigned to a contact 34.
  • a third contact 35 is connected to the input of a voltage follower 38 connected by resistors 36 and 37, at the output of which, depending on the attachment or non-use of a solder bridge 39, the speed-dependent voltage characteristics of the reference signal generator 9 can be tapped according to the schematic diagrams I, II or III.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Controls For Constant Speed Travelling (AREA)
EP19870109445 1986-08-16 1987-07-01 Drehzahlbegrenzer für Kraftfahrzeuge Withdrawn EP0256268A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3627906 1986-08-16
DE19863627906 DE3627906A1 (de) 1986-08-16 1986-08-16 Drehzahlbegrenzer fuer kraftfahrzeugmotore

Publications (1)

Publication Number Publication Date
EP0256268A1 true EP0256268A1 (de) 1988-02-24

Family

ID=6307587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19870109445 Withdrawn EP0256268A1 (de) 1986-08-16 1987-07-01 Drehzahlbegrenzer für Kraftfahrzeuge

Country Status (3)

Country Link
EP (1) EP0256268A1 (ja)
JP (1) JPS63160350U (ja)
DE (1) DE3627906A1 (ja)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011028A1 (en) * 1988-05-05 1989-11-16 Robert Bosch Gmbh An arrangement and method for speed control
DE19805299A1 (de) * 1998-02-10 1999-08-12 Deutz Ag Elektronische Regeleinrichtung
WO1999067521A1 (en) * 1998-06-22 1999-12-29 Digital Fleet Management Limited A vehicle limiting system
FR2800720A1 (fr) * 1999-11-05 2001-05-11 Eurl Transligne Dispositif de convoyage motorise, en virage pour palettes
EP2075443A3 (de) * 2007-12-28 2011-06-15 Matthias Schröder Verfahren sowie Vorrichtung zum Betreiben eines Verbrennungsmotors eines Fahrzeugs
WO2012127221A3 (en) * 2011-03-21 2012-12-27 Perkins Engines Company Limited Machine speed limit control

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4014294A1 (de) * 1990-05-04 1991-11-07 Daimler Benz Ag Vorrichtung zur einstellung verschiedener endabregeldrehzahlen an einer ein fahrzeug antreibenden luftverdichtenden einspritzbrennkraftmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086888A (en) * 1976-02-27 1978-05-02 Eltra Corporation Electronic vacuum modulator for controlling air flow to a throttle modulator mechanism for limiting engine speed and vehicle speed
GB2090438A (en) * 1980-12-27 1982-07-07 Fuji Heavy Ind Ltd Speed control of ic engines
US4367708A (en) * 1980-03-07 1983-01-11 Fuji Jukogyo Kabushiki Kaisha System for regulating the engine speed
DE3303565A1 (de) * 1983-02-03 1984-08-09 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum begrenzen der drehzahl einer brennkraftmaschine
US4604976A (en) * 1983-01-20 1986-08-12 Sturdy Truck Equipment, Inc. Road and engine speed governor with linear actuator

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS507715A (ja) * 1973-05-25 1975-01-27
FR2329855A1 (fr) * 1975-10-29 1977-05-27 Alsthom Cgee Procede pour la regulation de vitesse de moteurs a combustion interne
JPS52153034A (en) * 1976-06-15 1977-12-19 Nippon Denso Co Ltd Electric air-fuel ratio controlling device
DE2812156C2 (de) * 1978-03-20 1983-10-20 Vdo Adolf Schindling Ag, 6000 Frankfurt Einrichtung zum Steuern der Stellung eines ein Kraftstoff-Luft-Gemisch beeinflussenden Elements eines Verbrennungsmotors
DE2816613A1 (de) * 1978-04-17 1979-10-25 Vdo Adolf Schindling A Einrichtung zum regeln der fahrgeschwindigkeit eines kraftfahrzeugs
DE2839382A1 (de) * 1978-09-11 1980-03-20 Vdo Schindling Einrichtung zum regeln der fahrgeschwindigkeit eines kraftfahrzeugs
US4252096A (en) * 1978-10-23 1981-02-24 Ford Motor Company Electronic governor control
US4374422A (en) * 1980-10-27 1983-02-15 The Bendix Corporation Automatic speed control for heavy vehicles
JPS5838332A (ja) * 1981-08-31 1983-03-05 Hino Motors Ltd ディ−ゼルエンジンの燃料供給装置
DE3220083A1 (de) * 1982-05-28 1983-12-01 Sachs Systemtechnik Gmbh, 8720 Schweinfurt Verfahren und einrichtung zur aenderung der hoechstgeschwindigkeit von brennkraftmaschinenbetriebnen fahrzeugen
DE3405707A1 (de) * 1984-02-17 1985-08-22 Vdo Adolf Schindling Ag, 6000 Frankfurt Einrichtung zur regelung der geschwindigkeit eines fahrzeugs, insbesondere eines kraftfahrzeugs mit einem elektronischen regler
JPS6131634A (ja) * 1984-07-24 1986-02-14 Diesel Kiki Co Ltd 電子制御式燃料噴射装置

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4086888A (en) * 1976-02-27 1978-05-02 Eltra Corporation Electronic vacuum modulator for controlling air flow to a throttle modulator mechanism for limiting engine speed and vehicle speed
US4367708A (en) * 1980-03-07 1983-01-11 Fuji Jukogyo Kabushiki Kaisha System for regulating the engine speed
GB2090438A (en) * 1980-12-27 1982-07-07 Fuji Heavy Ind Ltd Speed control of ic engines
US4604976A (en) * 1983-01-20 1986-08-12 Sturdy Truck Equipment, Inc. Road and engine speed governor with linear actuator
DE3303565A1 (de) * 1983-02-03 1984-08-09 Robert Bosch Gmbh, 7000 Stuttgart Einrichtung zum begrenzen der drehzahl einer brennkraftmaschine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1989011028A1 (en) * 1988-05-05 1989-11-16 Robert Bosch Gmbh An arrangement and method for speed control
DE19805299A1 (de) * 1998-02-10 1999-08-12 Deutz Ag Elektronische Regeleinrichtung
WO1999067521A1 (en) * 1998-06-22 1999-12-29 Digital Fleet Management Limited A vehicle limiting system
FR2800720A1 (fr) * 1999-11-05 2001-05-11 Eurl Transligne Dispositif de convoyage motorise, en virage pour palettes
EP2075443A3 (de) * 2007-12-28 2011-06-15 Matthias Schröder Verfahren sowie Vorrichtung zum Betreiben eines Verbrennungsmotors eines Fahrzeugs
WO2012127221A3 (en) * 2011-03-21 2012-12-27 Perkins Engines Company Limited Machine speed limit control

Also Published As

Publication number Publication date
DE3627906A1 (de) 1988-02-18
DE3627906C2 (ja) 1990-05-10
JPS63160350U (ja) 1988-10-20

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Inventor name: FICHTER, MANFRED