EP0155993B1 - System for reducing instabilities in vehicle acceleration dynamics - Google Patents
System for reducing instabilities in vehicle acceleration dynamics Download PDFInfo
- Publication number
- EP0155993B1 EP0155993B1 EP84112347A EP84112347A EP0155993B1 EP 0155993 B1 EP0155993 B1 EP 0155993B1 EP 84112347 A EP84112347 A EP 84112347A EP 84112347 A EP84112347 A EP 84112347A EP 0155993 B1 EP0155993 B1 EP 0155993B1
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- EP
- European Patent Office
- Prior art keywords
- amplifier
- speed
- accelerator pedal
- amplitude limiter
- voltage
- 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.)
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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
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1497—With detection of the mechanical response of the engine
- F02D41/1498—With detection of the mechanical response of the engine measuring engine roughness
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1012—Engine speed gradient
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/1015—Engines misfires
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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
- F02D2250/00—Engine control related to specific problems or objectives
- F02D2250/28—Control for reducing torsional vibrations, e.g. at acceleration
Definitions
- the invention relates to a device for reducing unwanted accelerations in a vehicle according to the preamble of claim 1.
- undesired periodic acceleration changes can also be caused by accelerating by pressing the accelerator pedal.
- the accelerations are transmitted to the driver, who thus causes an undesired change in the position of the accelerator pedal.
- the entire vibration system which includes the vehicle with elasticities in the drive train, masses to be accelerated and moments of inertia as well as the power output of the internal combustion engine according to the operating point in the torque / speed characteristic and other factors, can be dynamically unstable. This can lead to an oscillation in which, in extreme cases, almost the entire accelerator pedal travel is involuntary (Bonanza effect).
- An electrically acting control device for the fuel metering system of an internal combustion engine limits the rate of change of the throttle valve opening angle depending on the prevailing speed of the internal combustion engine. This is to improve the mixture composition and reduce pollutant emissions.
- the limiting device is implemented as a feedback comparator amplifier with an integrator. A reduction in unwanted accelerations with the known device is not disclosed there.
- a disadvantage of these known damping measures is that the accelerator pedal adjustments, which are arbitrarily triggered by the driver, are also only implemented with a delay in corresponding positions of the actuator. This damper in the connection between the accelerator pedal and the actuator thus causes an undesirable delay in the response behavior of the internal combustion engine.
- there are coordination difficulties of the damper since the periodic vibration to be damped in the connection between the accelerator pedal and the engine depends on the vehicle type and — for a given vehicle type — on the gear selected.
- this known method for apparently improving the longitudinal stability of the vehicle is also ineffective if the disturbing excitations of the vibrations are not initiated via the accelerator pedal, but at other points, for example through shifting or clutching processes or bumps on the road.
- a fail-safe speed control circuit for a stationary internal combustion engine which has a voltage-controlled oscillator which continues to oscillate at a medium frequency in the event of failure of the pulse sequence obtained from the speed signal, in order to avoid engine runaway.
- differentiators and limiters are used in a known manner after amplification.
- the invention is therefore based on the object of developing a device according to the generic term in such a way that harmful effects of the longitudinal vehicle dynamics instabilities are effectively reduced regardless of the point of attack of the interferences, the parameters of which can be set uncritically and which do not noticeably deteriorate the response behavior of the internal combustion engine to arbitrary accelerator pedal actuation.
- the solution is based on the principle that a suitable signal is derived from the engine speed, which signal is fed back to the steeper of the fuel-air mixture in the sense of a regulation to a minimal jerk of the vehicle.
- a suitable signal is derived from the engine speed, which signal is fed back to the steeper of the fuel-air mixture in the sense of a regulation to a minimal jerk of the vehicle.
- the changes in the speed of the engine are recorded and if they are disturbing, ie not due to the driver can be recognized arbitrarily triggered, implemented in opposite position changes of the actuator.
- arbitrary accelerator pedal changes by the driver are not dampened by the device.
- this damping of the vehicle longitudinal dynamics instabilities is carried out using electrical means, in that an electrical voltage is derived from the engine speed, which voltage is then differentiated and transmitted via an amplitude limiter amplifier.
- this amplitude limiter amplifier is particularly advantageously limited to approximately 50% of the working range of the adjustment of the actuator. This ensures reliable compensation of interference vibrations, on the other hand, the compensation does not have a disadvantageous effect on the driver's arbitrary acceleration and deceleration processes.
- This device is particularly advantageously combined with a conventional device for electrical adjustment of the actuator by the accelerator pedal.
- the signal emitted by the limiter amplifier is expediently coupled in at the output of the device for electrical adjustment of the actuator by the accelerator pedal (E-gas).
- an accelerator pedal (accelerator pedal) is designated 1, the position of which is converted into an electrical position signal via an electrical position transmitter 2.
- This signal is amplified with an amplifier 3 and converted into a corresponding position of an electromechanical actuator 4, which determines the fuel-air mixture of an internal combustion engine 5.
- a speed sensor 6 is connected to a rotatable element of the motor and supplies an electrical speed signal corresponding to the motor speed.
- This speed signal is converted into a proportional voltage in a speed-voltage converter.
- This voltage is differentiated in a differentiator 8, which can be realized by a conventional resistance capacitor combination, and fed to an amplitude limiter amplifier 9.
- the amplifier amplifies approximately linearly as long as its output voltage does not exceed a predetermined voltage range. The amplifier no longer amplifies beyond this range, but its output voltage is kept constant at a maximum value.
- This limiter circuit can be implemented in the usual way with a Zener diode.
- the output signal of the amplitude limiter amplifier is coupled into the signal flow path of the E-gas device at a coupling point 11.
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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)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
- Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
Description
Die Erfindung betrifft eine Einrichtung zur Herabsetzung von ungewollten Beschleunigungen in einem Fahrzeug nach der Gattung des Anspruchs 1.The invention relates to a device for reducing unwanted accelerations in a vehicle according to the preamble of claim 1.
Insbesondere bei Fahrzeugen mit Antrieb durch Verbrennungsmotore mit steiler Drehmoment/Drehzahl-Kennlinie und mit weicher Auslegung des Antriebsstranges - typischerweise Merkmale bei Verwendung von Dieselmotoren - können beim willkürlichen Beschleunigen durch Betätigung des Gaspedals außerdem unerwünschte periodische Beschleunigungsänderungen hervorgerufen werden. Die Beschleunigungen werden auf den Fahrer übertragen, der damit eine unerwünschte Stellungsänderung des Gaspedals hervorruft. Das gesamte Schwingungssystem, welches das Fahrzeug mit Elastizitäten im Antriebsstrang, zu beschleunigende Massen und Trägheitsmomente sowie die Leistungsabgabe des Verbrennungsmotors entsprechend dem Betriebspunkt in der Drehmoment/Drehzahlkennlinie und weitere Faktoren umfaßt, kann dynamisch instabil sein. Damit kann es zu einer aufklingenden Schwingung kommen, bei der im Extremfall fast der gesamte Gaspedalstellweg unwillkürlich durchlaufen wird (Bonanza-Effekt).Particularly in vehicles powered by internal combustion engines with steep torque / speed characteristics and with a soft drive train design - typically features when using diesel engines - undesired periodic acceleration changes can also be caused by accelerating by pressing the accelerator pedal. The accelerations are transmitted to the driver, who thus causes an undesired change in the position of the accelerator pedal. The entire vibration system, which includes the vehicle with elasticities in the drive train, masses to be accelerated and moments of inertia as well as the power output of the internal combustion engine according to the operating point in the torque / speed characteristic and other factors, can be dynamically unstable. This can lead to an oscillation in which, in extreme cases, almost the entire accelerator pedal travel is involuntary (Bonanza effect).
Um dieser unerwünschten Erscheinung abzuhelfen, hat man bereits versucht, die LängsSchwingungen des Fahrzeug/Fahrersystems dadurch zu dämpfen, daß das Gaspedal über ein Verzögerungsglied mit dem Steiler in Verbindung steht, welcher das Kraftstoff-Luftgemisch des Verbrennungsmotors steuert. Das Verzögerungsglied wurde insbesondere durch einen hydraulischen Dämpfer verwirklicht (DE-C-843 625).In order to remedy this undesirable phenomenon, attempts have already been made to dampen the longitudinal vibrations of the vehicle / driver system in that the accelerator pedal is connected via a delay element to the stepper which controls the fuel-air mixture of the internal combustion engine. The delay element was implemented in particular by a hydraulic damper (DE-C-843 625).
Eine elektrisch wirkende Steuereinrichtung für das Kraftstoffzumeßsystem einer Brennkraftmaschine nach der DE-C2-2 751 125 begrenzt die Änderungsgeschwindigkeit des Drosselklappenöffnungswinkels abhängig von der herrschenden Drehzahl der Brennkraftmaschine. Dadurch soll die Gemischzusammensetzung verbessert und der Schadstoffausstoß verringert werden. Die Begrenzungseinrichtung ist gemäß einer Ausführungsform als rückgekoppelter Komparator-Verstärker mit einem Integrator realisiert. Eine Herabsetzung ungewollter Beschleunigungen mit der bekannten Einrichtung ist dort nicht offenbart.An electrically acting control device for the fuel metering system of an internal combustion engine according to DE-C2-2 751 125 limits the rate of change of the throttle valve opening angle depending on the prevailing speed of the internal combustion engine. This is to improve the mixture composition and reduce pollutant emissions. According to one embodiment, the limiting device is implemented as a feedback comparator amplifier with an integrator. A reduction in unwanted accelerations with the known device is not disclosed there.
Nachteilig bei diesen bekannten Dämpfungsmaßnahmen ist, daß auch die willkürlich durch den Fahrer ausgelösten Verstellungen des Gaspedals ebenfalls nur verzögert in entsprechende Positionen des Stellers umgesetzt werden. Durch diesen Dämpfer in der Verbindung zwischen Gaspedal und Steller tritt somit eine unerwünschte Verzögerung im Ansprechverhalten des Verbrennungsmotors ein. Hinzu kommen Abstimmungsschwierigkeiten des Dämpfers, da die in der Verbindung zwischen Gaspedal und Motor zu dämpfende periodische Schwingung von dem Fahrzeugtyp und- bei gegebenen Fahrzeugtyp - von dem eingelegten Gang abhängt. Grundsätzlich ist darüber hinaus diese bekannte Methode zur scheinbaren Verbesserung der Fahrzeuglängsstabilität wirkungslos, wenn die störenden Anregungen der Schwingungen nicht über das Gaspedal eingeleitet werden, sondern an anderen Stellen, beispielsweise durch Schalt- oder Kupplungsvorgänge oder Fahrbahn-Unebenheiten.A disadvantage of these known damping measures is that the accelerator pedal adjustments, which are arbitrarily triggered by the driver, are also only implemented with a delay in corresponding positions of the actuator. This damper in the connection between the accelerator pedal and the actuator thus causes an undesirable delay in the response behavior of the internal combustion engine. In addition, there are coordination difficulties of the damper, since the periodic vibration to be damped in the connection between the accelerator pedal and the engine depends on the vehicle type and — for a given vehicle type — on the gear selected. In principle, this known method for apparently improving the longitudinal stability of the vehicle is also ineffective if the disturbing excitations of the vibrations are not initiated via the accelerator pedal, but at other points, for example through shifting or clutching processes or bumps on the road.
Aus der US-A-4 346 776 ist eine Einrichtung zur Beeinflussung der Drosselklappenverstellung in Abhängigkeit von der Motordrehzahl und des Ansaugdruckes unter Zwischenschaltung eines Differenziergliedes bekannt. Dabei erfolgt jedoch eine positive Rückführung des differenzierten Fahrpedal-Stellungssignals und des überlagerten Drehzahl/Geschwindigkeits-Signals auf die Drosselklappenstelleinrichtung, um das trägere Ansprechen des Fahrzeugs bei höherer Drehzahl/Geschwindigkeit auf den Beschleunigungswunsch auszugleichen. Durch die positive Rückkopplung erfolgt eine Mitkopplung, welche die hier in Rede stehenden unerwünschten Effekte noch verstärkt.From US-A-4 346 776 a device for influencing the throttle valve adjustment depending on the engine speed and the intake pressure with the interposition of a differentiating element is known. However, the differentiated accelerator pedal position signal and the superimposed speed / speed signal are positively fed back to the throttle valve control device in order to compensate for the slower response of the vehicle at higher speed / speed to the acceleration request. The positive feedback results in positive feedback, which further amplifies the undesired effects in question here.
Aus der US-A-3 724 433 ist weiter eine ausfallsichere Drehzahlregelschaltung für eine stationäre Brennkraftmaschine bekannt, die einen spannungsgesteuerten Oszillator aufweist, der bei Ausfall der aus dem Drehzahlsignal gewonnenen Impulsfolge mit einer mittleren Frequenz weiterschwingt, um das Durchgehen des Motors zu vermeiden. Zur Impulsformung werden dabei in bekannter Weise nach der Verstärkung Differenzierer und Begrenzer eingesetzt.From US-A-3 724 433, a fail-safe speed control circuit for a stationary internal combustion engine is also known, which has a voltage-controlled oscillator which continues to oscillate at a medium frequency in the event of failure of the pulse sequence obtained from the speed signal, in order to avoid engine runaway. For pulse shaping, differentiators and limiters are used in a known manner after amplification.
Ferner ist es bekannt, bei der Regelung des Betriebsverhaltens von Brennkraftmaschinen, insbesondere der Gemischzusammensetzung, in aufeinanderfolgenden Arbeitstakten ein von den Schwankungen des Brennraumdruckes abhängiges Laufunruhesignal aus den Winkelgeschwindigkeitsschwankungen der Kurbelwelle zu gewinnen (US-A-4 161 162). Die dort bei der Diskussion des Standes der Technik erwähnten Frequenzfilter dienen zur Unterdrückung unerwünschter überlagerter Frequenzen und entsprechen nicht einem Amplituden-Begrenzer-Verstärker.It is also known, when regulating the operating behavior of internal combustion engines, in particular the mixture composition, to obtain an uneven running signal which is dependent on the fluctuations in the combustion chamber pressure from the angular velocity fluctuations of the crankshaft in successive work cycles (US Pat. No. 4,161,162). The frequency filters mentioned there in the discussion of the prior art serve to suppress unwanted superimposed frequencies and do not correspond to an amplitude limiter amplifier.
Der Erfindung liegt daher die Aufgabe zugrunde, eine Einrichtung nach dem Gattungsbegriff derart weiterzubilden, daß schädliche Auswirkungen der Fahrzeuglängsdynamik-Instabilitäten unabhängig von der Angriffsstelle der Störeinflüsse wirksam vermindert, deren Parameter unkritisch einstellbar sind und welche das Ansprechverhalten des Verbrennungsmotors auf willkürliche Gaspedalbetätigung nicht spürbar verschlechtert.The invention is therefore based on the object of developing a device according to the generic term in such a way that harmful effects of the longitudinal vehicle dynamics instabilities are effectively reduced regardless of the point of attack of the interferences, the parameters of which can be set uncritically and which do not noticeably deteriorate the response behavior of the internal combustion engine to arbitrary accelerator pedal actuation.
Die Lösung dieser Aufgabe erfolgt mit den im kennzeichnenden Teil des Hauptanspruchs angegebenen Maßnahmen.This problem is solved with the measures specified in the characterizing part of the main claim.
Die Lösung beruht auf dem Prinzip, daß aus der Motordrehzahl ein geeignetes Signal abgeleitet wird, welches zu dem Steiler des Kraftstoff-Luftgemisches im Sinne einer Regelung auf minimalen Ruck des Fahrzeugs, rückgeführt wird. Hierzu werden die Drehzahländerungen des Motors erfaßt und wenn sie als störend, d. h. nicht durch den Fahrer willkürlich ausgelöst erkannt werden, in gegenläufige Stellungsänderungen des Stellers umgesetzt. Willkürliche Gaspedaländerungen durch den Fahrer werden jedoch durch die Einrichtung nicht dämpfend beeinflußt. Im einzelnen wird diese Dämpfung der Fahrzeuglängsdynamik-Instabilitäten mit elektrischen Mitteln durchgeführt, indem von der Motordrehzahl eine elektrische Spannung abgeleitet wird, welche anschließend differenziert und über einen Amplituden-Begrenzer-Verstärker übertragen wird.The solution is based on the principle that a suitable signal is derived from the engine speed, which signal is fed back to the steeper of the fuel-air mixture in the sense of a regulation to a minimal jerk of the vehicle. For this purpose, the changes in the speed of the engine are recorded and if they are disturbing, ie not due to the driver can be recognized arbitrarily triggered, implemented in opposite position changes of the actuator. However, arbitrary accelerator pedal changes by the driver are not dampened by the device. In particular, this damping of the vehicle longitudinal dynamics instabilities is carried out using electrical means, in that an electrical voltage is derived from the engine speed, which voltage is then differentiated and transmitted via an amplitude limiter amplifier.
Nach Anspruch 2 wird der Eingriff dieses Amplituden-Begrenzer-Verstärkers besonders zweckmäßig auf ca. 50 % des Arbeitsbereichs der Verstellung des Stellers begrenzt. Damit ist eine sichere Kompensation von Störschwingungen gewährleistet, andererseits wirkt sich die Kompensation nicht nachteilig bei willkürlichen Beschleunigungs- und Verzögerungsvorgängen durch den Fahrer aus.According to claim 2, the intervention of this amplitude limiter amplifier is particularly advantageously limited to approximately 50% of the working range of the adjustment of the actuator. This ensures reliable compensation of interference vibrations, on the other hand, the compensation does not have a disadvantageous effect on the driver's arbitrary acceleration and deceleration processes.
Besonders zweckmäßig wird diese Einrichtung mit einer üblichen Einrichtung zur elektrischen Verstellung des Stellers durch das Gaspedal kombiniert. Dabei erfolgt die Einkopplung des von dem Begrenzer-Verstärker abgegebenen Signals zweckmäßig am Ausgang der Einrichtung zur elektrischen Verstellung des Stellers durch das Gaspedal (E-Gas). - Bei dieser Kombination ist der Zusatzaufwand für die Einrichtung zum Herabsetzen der störenden Auswirkungen von Fahrzeuglängsdynamik-Instabilitäten besonders niedrig, da die Verstellung des Stellers mit elektromechanischen Mitteln erfolgt.This device is particularly advantageously combined with a conventional device for electrical adjustment of the actuator by the accelerator pedal. The signal emitted by the limiter amplifier is expediently coupled in at the output of the device for electrical adjustment of the actuator by the accelerator pedal (E-gas). With this combination, the additional effort for the device for reducing the disruptive effects of longitudinal vehicle dynamics instabilities is particularly low, since the actuator is adjusted by means of electromechanical means.
Die Erfindung wird im folgenden anhand einer Zeichnung mit einer Figur erläutert, in der ein Signalflußbild der Einrichtung in Verbindung mit einer E-Gaseinrichtung dargestellt ist:The invention is explained below with reference to a drawing with a figure, in which a signal flow diagram of the device is shown in connection with an E-gas device:
In Fig. 1 ist ein Gaspedal (Fahrpedal) mit 1 bezeichnet, dessen Stellung über einen elektrischen Stellungsgeber 2 in ein elektrisches Stellungssignal umgewandelt wird. Dieses Signal wird mit einem Verstärker 3 verstärkt und in eine entsprechende Position eines elektromechanischen Stellers 4 umgewandelt, welcher das Kraftstoff-Luftgemisch eines Verbrennungsmotors 5 bestimmt.In Fig. 1, an accelerator pedal (accelerator pedal) is designated 1, the position of which is converted into an electrical position signal via an electrical position transmitter 2. This signal is amplified with an amplifier 3 and converted into a corresponding position of an electromechanical actuator 4, which determines the fuel-air mixture of an
Mit dieser herkömmlichen E-Gas Einrichtung ist folgende Einrichtung zur Herabsetzung von Fahrzeuglängsdynamik-Instabilitäten gekoppelt :The following device for reducing vehicle longitudinal dynamics instabilities is coupled to this conventional e-gas device:
Mit einem drehbaren Element des Motors steht ein Drehzahlsensor 6 in Verbindung, der ein elektrisches Drehzahlsignal entsprechend der Motordrehzahl liefert. Dieses Drehzahlsignal wird in einem Drehzahl-Spannungswandler in eine proportionale Spannung umgesetzt. Diese Spannung wird in einem Differenzierglied 8, welches durch eine übliche Widerstandskondensatorkombination realisiert sein kann, differenziert und einem Amplituden-Begrenzer-Verstärker 9 zugeführt. Wie mit der in dem Begrenzer-VerstärkerBlock angedeuteten Kennlinie 10 dargestellt ist, verstärkt der Verstärker annähernd linear, solange seine Ausgangsspannung einen vorgegebenen Spannungsbereich nicht überschreitet. Über diesen Bereich hinaus verstärkt der Verstärker aber nicht mehr, sondern seine Ausgangsspannung wird konstant auf einem maximalen Wert gehalten. Diese Begrenzerschaltung kann in üblicher Weise mit einer Zener-Diode realisiert werden.A
Das Ausgangssignal des Amplituden-Begrenzer-Verstärkers wird an einer Koppelstelle 11 in den Signalflußweg der E-Gaseinrichtung eingekoppelt.The output signal of the amplitude limiter amplifier is coupled into the signal flow path of the E-gas device at a coupling point 11.
Mit dieser Einrichtung werden periodische Schwingungen, die auf Fahrzeuglängsdynamik-Instabilitäten zurückzuführen sind, wie es sich gezeigt hat praktisch vollständig ausgeregelt, da jede Drehzahländerung des Motors eine gegenläufige Änderung der Stellerposition sofort hervorruft, so daß das Kraftstoff-Luftgemisch im kompensierenden Sinne beeinflußt wird. - Bei Betätigung des Gaspedals 1 hingegen, die eine gewünschte Änderung der Motordrehzahl durch Beeinflussung des Kraftstoff-Luftgemischs über den Steller hervorrufen soll wirkt der Amplituden-Begrenzer-Verstärker 9 begrenzend, so daß kein die Motordrehzahl kompensierendes Signal über die Koppelstelle 11 in den Steller 4 eingespeist wird. Der Fahrer merkt daher praktisch nicht, daß er mit einer Einrichtung zur Herabsetzung der Fahrzeuglängsdynamik-Instabilitäten fährt.With this device, periodic vibrations, which can be attributed to vehicle longitudinal dynamics instabilities, as it has been shown, are practically completely compensated for, since any change in the speed of the engine immediately causes an opposite change in the position of the actuator, so that the fuel-air mixture is influenced in a compensating sense. - On the other hand, when the accelerator pedal 1 is actuated, which is intended to bring about a desired change in the engine speed by influencing the fuel-air mixture via the actuator, the amplitude limiter amplifier 9 has a limiting effect, so that no signal compensating the engine speed via the coupling point 11 into the actuator 4 is fed. The driver therefore hardly notices that he is driving with a device for reducing the longitudinal dynamics instabilities of the vehicle.
Claims (2)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19843408002 DE3408002A1 (en) | 1984-03-03 | 1984-03-03 | DEVICE FOR REDUCING VEHICLE LENGTH DYNAMICS INSTABILITIES |
| DE3408002 | 1984-03-03 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0155993A2 EP0155993A2 (en) | 1985-10-02 |
| EP0155993A3 EP0155993A3 (en) | 1986-02-19 |
| EP0155993B1 true EP0155993B1 (en) | 1989-12-13 |
Family
ID=6229578
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP84112347A Expired EP0155993B1 (en) | 1984-03-03 | 1984-10-13 | System for reducing instabilities in vehicle acceleration dynamics |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US4569320A (en) |
| EP (1) | EP0155993B1 (en) |
| JP (1) | JPS60209334A (en) |
| DE (2) | DE3408002A1 (en) |
Families Citing this family (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60164629A (en) * | 1984-02-07 | 1985-08-27 | Nissan Motor Co Ltd | Throttle valve control device |
| DE3538232A1 (en) * | 1985-10-28 | 1987-05-07 | Vdo Schindling | ELECTRICAL SET POINT |
| DE3738719C2 (en) * | 1986-11-27 | 1997-09-25 | Volkswagen Ag | Method and arrangement for preventing disturbing load changes in a vehicle internal combustion engine |
| DE3644137A1 (en) * | 1986-12-23 | 1988-07-14 | Daimler Benz Ag | DEVICE FOR CONTROLLING AT LEAST ONE SIZE INFLUENCING THE DRIVE TORQUE OF AN INTERNAL COMBUSTION ENGINE OF A MOTOR VEHICLE |
| IT1218095B (en) * | 1987-06-19 | 1990-04-12 | Volkswagen Ag | PROVISION TO PREVENT NASTY STRIKES DUE TO VARIATIONS IN THE LOAD IN AN INTERNAL COMBUSTION ENGINE FOR VEHICLES |
| US4941444A (en) * | 1988-02-26 | 1990-07-17 | Mazda Motor Company | Engine control apparatus |
| JP2759957B2 (en) * | 1988-03-09 | 1998-05-28 | 株式会社日立製作所 | Engine control method |
| JP2506150B2 (en) * | 1988-06-03 | 1996-06-12 | 株式会社日立製作所 | Throttle control device for internal combustion engine |
| DE3828850A1 (en) * | 1988-08-25 | 1990-03-08 | Bosch Gmbh Robert | DEVICE FOR CONTROLLING THE OPERATING CHARACTERISTICS OF AN INTERNAL COMBUSTION ENGINE |
| GB8908661D0 (en) * | 1989-04-17 | 1989-06-01 | Lucas Ind Plc | Engine throttle control system |
| DE4202407C2 (en) * | 1992-01-29 | 1994-02-03 | Daimler Benz Ag | Procedure for damping longitudinal vibrations |
| JPH0688543A (en) * | 1992-09-04 | 1994-03-29 | Nippondenso Co Ltd | Throttle controller |
| DE4321333A1 (en) * | 1993-06-26 | 1995-01-05 | Bosch Gmbh Robert | Method and device for controlling a drive unit of a vehicle |
| US5668727A (en) * | 1995-04-28 | 1997-09-16 | General Motors Corporations | Powertrain torque control method |
| DE19626536C2 (en) * | 1996-07-02 | 2000-07-06 | Daimler Chrysler Ag | Method for regulating the injection quantity of the fuel supplied to the cylinders of an internal combustion engine and a device for carrying out this method |
| US5775293A (en) * | 1996-10-01 | 1998-07-07 | Cummins Engine Co., Inc. | Electronic throttle pedal nonlinear filter |
| JP3356945B2 (en) * | 1996-12-17 | 2002-12-16 | 愛三工業株式会社 | Throttle valve control device |
| FR2766872B1 (en) * | 1997-08-01 | 1999-10-15 | Renault | METHOD FOR CORRECTING THE TORQUE IMPACT OF AN INTERNAL COMBUSTION ENGINE |
| US6347275B1 (en) * | 1999-05-31 | 2002-02-12 | Isuzu Motors Limited | Method and apparatus for attenuating torsional vibration in drive train in vehicle |
| DE102004024374A1 (en) * | 2004-05-18 | 2005-12-15 | Robert Bosch Gmbh | Method and device for operating a vehicle |
| US8204662B2 (en) * | 2008-02-28 | 2012-06-19 | Cnh America Llc | Method and system to control electronic throttle sensitivity |
| JP6657635B2 (en) * | 2015-07-24 | 2020-03-04 | スズキ株式会社 | Driving force control device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE843625C (en) * | 1948-10-02 | 1952-07-10 | Daimler Benz Ag | Pressure medium regulation of the fuel injection in internal combustion engines |
| US4161162A (en) * | 1974-04-09 | 1979-07-17 | Robert Bosch Gmbh | Method and apparatus for controlling the operation of an internal combustion engine |
| DE2751125C2 (en) * | 1977-11-16 | 1987-07-09 | Robert Bosch Gmbh, 7000 Stuttgart, De |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3724433A (en) * | 1971-08-13 | 1973-04-03 | Ambac Ind | Engine governor system with signal-loss protection and controlled oscillator circuit suitable for use therein |
| US4010674A (en) * | 1974-01-17 | 1977-03-08 | Associated Engineering Limited | Speed responsive systems |
| DE2839382A1 (en) * | 1978-09-11 | 1980-03-20 | Vdo Schindling | DEVICE FOR REGULATING THE SPEED OF A MOTOR VEHICLE |
| US4346776A (en) * | 1979-02-23 | 1982-08-31 | The Bendix Corporation | Means for improving automobile driveability |
| DE2949884C2 (en) * | 1979-12-12 | 1985-05-30 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Valve arrangement for regulating the idle speed of Otto engines |
| JPS5738642A (en) * | 1980-08-19 | 1982-03-03 | Nippon Denso Co Ltd | Method of internal-combustion engine control |
| DE3149361C2 (en) * | 1981-12-12 | 1986-10-30 | Vdo Adolf Schindling Ag, 6000 Frankfurt | Electric accelerator pedal |
| DE3226283A1 (en) * | 1982-07-14 | 1984-01-19 | Vdo Adolf Schindling Ag, 6000 Frankfurt | IDLE CONTROLLER, IN PARTICULAR FOR MOTOR VEHICLES |
| DE3240293A1 (en) * | 1982-10-30 | 1984-05-03 | Dr.Ing.H.C. F. Porsche Ag, 7000 Stuttgart | DEVICE FOR DAMPING PERIODICALLY CHANGING LENGTH ACCELERATIONS OF A MOTOR VEHICLE |
-
1984
- 1984-03-03 DE DE19843408002 patent/DE3408002A1/en not_active Withdrawn
- 1984-10-13 DE DE8484112347T patent/DE3480726D1/en not_active Revoked
- 1984-10-13 EP EP84112347A patent/EP0155993B1/en not_active Expired
-
1985
- 1985-02-15 US US06/701,905 patent/US4569320A/en not_active Expired - Fee Related
- 1985-03-04 JP JP60041383A patent/JPS60209334A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE843625C (en) * | 1948-10-02 | 1952-07-10 | Daimler Benz Ag | Pressure medium regulation of the fuel injection in internal combustion engines |
| US4161162A (en) * | 1974-04-09 | 1979-07-17 | Robert Bosch Gmbh | Method and apparatus for controlling the operation of an internal combustion engine |
| DE2751125C2 (en) * | 1977-11-16 | 1987-07-09 | Robert Bosch Gmbh, 7000 Stuttgart, De |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3408002A1 (en) | 1985-09-12 |
| US4569320A (en) | 1986-02-11 |
| JPS60209334A (en) | 1985-10-21 |
| EP0155993A2 (en) | 1985-10-02 |
| EP0155993A3 (en) | 1986-02-19 |
| DE3480726D1 (en) | 1990-01-18 |
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