EP2180099B1 - System and method for controlling extension devices for winter vehicles - Google Patents

System and method for controlling extension devices for winter vehicles Download PDF

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Publication number
EP2180099B1
EP2180099B1 EP09013374.5A EP09013374A EP2180099B1 EP 2180099 B1 EP2180099 B1 EP 2180099B1 EP 09013374 A EP09013374 A EP 09013374A EP 2180099 B1 EP2180099 B1 EP 2180099B1
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EP
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Prior art keywords
rotational speed
auxiliary motor
hydraulic
motor
mounted implement
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EP09013374.5A
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German (de)
French (fr)
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EP2180099A3 (en
EP2180099A2 (en
Inventor
Rolf Isele
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Kuepper Weisser GmbH
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Kuepper Weisser GmbH
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01H—STREET CLEANING; CLEANING OF PERMANENT WAYS; CLEANING BEACHES; DISPERSING OR PREVENTING FOG IN GENERAL CLEANING STREET OR RAILWAY FURNITURE OR TUNNEL WALLS
    • E01H10/00—Improving gripping of ice-bound or other slippery traffic surfaces, e.g. using gritting or thawing materials ; Roadside storage of gritting or solid thawing materials; Permanently installed devices for applying gritting or thawing materials; Mobile apparatus specially adapted for treating wintry roads by applying liquid, semi-liquid or granular materials
    • E01H10/007—Mobile apparatus specially adapted for preparing or applying liquid or semi-liquid thawing material or spreading granular material on wintry roads

Definitions

  • the invention relates to a system and a method for controlling attachments for winter service spreading vehicles, in particular spreaders.
  • Attachments for winter maintenance vehicles such as spreaders on Winterdienststreujanen be operated by hydraulic motors.
  • a hydraulic motor is connected to a hydraulic pump via pressure lines, is driven by hydraulic oil delivered by the hydraulic pump, and converts the energy of the hydraulic oil into mechanical (kinetic) energy.
  • the hydraulic pump is in turn driven by a different from the vehicle engine auxiliary engine, such as a diesel engine, a gasoline engine or an electric motor.
  • the control of the power of the hydraulic motor by means of valves that supply the pumped by the hydraulic pump hydraulic oil either the hydraulic motor or conduct at unnecessary power back into a tank.
  • a system according to the preamble of claim 1 is in DE 2011 894 A described.
  • the object of the present invention is to improve such a system for controlling implements on winter service spreading vehicles.
  • a system according to the invention for controlling an attachment for a winter service spreading vehicle comprises the aforementioned components, namely in particular the auxiliary motor, the hydraulic pump driven by the auxiliary motor and the hydraulic motor supplied with hydraulic fluid via the hydraulic pump.
  • the system according to the invention is set up to automatically determine and set the rotational speed of the auxiliary engine as a function of at least one operating parameter that is relevant for the operation of the at least one attachment, the operating parameters comprising one or more of the following parameters: spreading width, spreading density of salt, Spread density of brine, brine fraction and vehicle speed.
  • the power and oil quantity of the hydraulic system required for the operation of the attachment can already be determined without additional possibly difficult-to-grasp parameters, for example of the hydraulic system, since the required speeds, i. Swing volumes of the hydraulic motors for a specific operating condition, are known.
  • the displacement of the hydraulic pump is known.
  • the required speed of the auxiliary motor can be determined and adjusted.
  • the rotational speed of the auxiliary motor is determined and adjusted taking into account the displacement volumes of the hydraulic pump and the at least one hydraulic motor, wherein also the rotational speed of the at least one hydraulic motor is taken into account, which is required for driving the attachment due to the relevant operating parameters.
  • the speed of the auxiliary motor can be controlled only on the basis of already known or predetermined parameters in the system, without additional, not necessary for the conventional operation of the winter service scattering vehicle, parameters must be determined or detected.
  • an auxiliary engine always runs at a constant speed that can not be changed, and accordingly drives a constant-force hydraulic pump.
  • the attachment does not require full power at all times provided by the built-up pressure of the hydraulic pump. Therefore, according to the invention, the rotational speed of the auxiliary motor can be set to the actually required value. That is, in the system according to the invention, the auxiliary engine runs at a variable speed, which is determined and set individually, and which can therefore be adapted to changing operating parameters.
  • auxiliary motor system of the invention Due to the power-controlled speed of the auxiliary motor system of the invention reduces the risk of overheating of the hydraulic oil, since only the amount of hydraulic oil required for the operation of the attachment is always funded by the hydraulic pump. In addition, the invention achieves a noise reduction, especially at standstill of the vehicle, which has a positive effect on the environment. In addition, the lower fuel consumption due to the adjusted speed of the auxiliary engine on the one hand means a reduction in the operating costs of the winter service gritter vehicle and on the other hand a conservation of the environment. Finally, as an advantage less wear of the auxiliary motor should be mentioned, since it often runs at low speed.
  • a conveyor unit for conveying grit from a grit container and a scattering device for distributing the subsidized grit on a surface to be spread are used.
  • a conveyor or auger conveys road salt onto a spreading plate which distributes the road salt over a roadway by means of a rotating motion to reduce the risk of road slippery snow and ice.
  • a brine supply can be provided as another attachment or as a component of an attachment.
  • a pump is driven by means of the auxiliary motor via a hydraulic motor which pumps the brine from a tank to the conveyed road salt, so that brine and road salt are mixed before spreading on the road.
  • the speed of the auxiliary motor according to the invention is automatically determined and adjusted depending on operating parameters of the at least one attachment.
  • the operating parameters comprise one or more of the following parameters: spread, spreading density of salt, spreading density of brine, brine fraction and driving speed of the winter utility vehicle.
  • spread spreading density of salt
  • spreading density of brine spreading density of brine
  • brine fraction driving speed of the winter utility vehicle.
  • the spread is determined depending on the road width or generally the width of the area to be spread, for example, by the driver of the Winterdienststreuaffs. To relieve the driver, this can also be done automatically, for example, by the position of the vehicle is determined by GPS and set by comparison with a database containing information about roads and sections.
  • the spread density of salt or brine to be set is influenced by the ambient conditions, such as temperature, humidity or road conditions, whereby the scattering density of brine in the case of pure liquid scattering is important.
  • the spreading density can in turn be adjusted manually by the driver or automatically.
  • a GPS-based system can be used, which determines the optimum spreading density based on the position of the winter service litter vehicle and on the basis of weather data.
  • the weather data can be provided centrally by a weather service or by weather stations along the route being traveled. The determined parameters can then be centrally evaluated and sent to the vehicle, or the evaluation of the data and the determination of the spread density takes place directly in the vehicle.
  • the road condition in addition to the manual input by the driver and road condition sensors can be used. These determine, for example by infrared and / or microwave radiation, whether the road is wet, icy or dry and how large the amount of moisture. Based on this information, the scatter density is then determined.
  • Another parameter may be the proportion of brine, ie the percentage of brine in the mixture of road salt and brine.
  • Road salt is usually not alone, but spread in a mixture with brine on the street. This serves for a moistening of the road salt to the distribution on the Road surface to improve.
  • the thawing effect of the road salt is improved by mixing with brine.
  • the brine is mixed with the road salt from a separate tank before being spread.
  • the amount of brine can be increased or decreased, usually a mixing ratio of 30 weight percent brine and 70 weight percent road salt is used. Since this also hydraulic motors are operated, which are driven by a hydraulic pump, the speed of the auxiliary motor can be adapted to the amount of brine.
  • the system preferably comprises a reference table in which the associated required speed for the auxiliary motor is stored for different constellations of implements and operating parameters.
  • the speed of the auxiliary motor can be controlled very easily.
  • the values in the reference table may be based on empirically derived values.
  • the system is set up to select the speed of the auxiliary motor higher than the speed required for the operation of the at least one attachment and to promote excess hydraulic oil in a tank.
  • a safety surcharge is selected for the determined from the operating parameters speed of the auxiliary motor. This also works the hydraulic pump with increased speed and thus promotes additional hydraulic oil. As far as this is not needed, it is pumped back into the tank. This safety impact ensures that the hydraulic motor of the attachment always has enough hydraulic pressure.
  • the system is preferably configured to select the speed of the auxiliary motor after a standstill of the attachment briefly higher than the determined from the operating parameters speed. As a result, the hydraulic system is at a standstill sufficient pressure available, and there are any startup problems, such as a screw conveyor, prevented.
  • a further embodiment of the invention can be provided to detect the speed of the auxiliary motor.
  • a possible engine retardation of the auxiliary engine can be detected.
  • the speed of the auxiliary motor is too low and does not provide enough hydraulic energy for the operation of the attachment.
  • the speed of the auxiliary motor can then be raised. For this purpose, it may be necessary to reduce the power requirement of the implements until the auxiliary motor has reached the speed in the work area again. Then, the speed can be raised to a higher range to provide the hydraulic motors with sufficient power.
  • FIG. 1 is the arrangement of an auxiliary motor 1 and a connected controller 2 with two hydraulic motors 4, 5 shown simplified.
  • the controller 2 controls the speed of the auxiliary engine 1, for example, a diesel engine, a gasoline engine or an electric motor by processing setpoints and actual values and operating parameters and determines therefrom the speed for the auxiliary motor 1.
  • the auxiliary motor 1 is connected via an electrical connection 16 to the controller 2.
  • the auxiliary engine 1 drives a hydraulic pump 3, which via a pressure line 7 hydraulic oil to hydraulic motors 4, 5 passes.
  • the hydraulic motors 4, 5 each drive an attachment, such as a spreader.
  • the controller 2 receives a feedback from the auxiliary engine 1 about its instantaneous speed, which can be included in the determination of the speed of the auxiliary motor 1 in addition to the other operating parameters.
  • FIG. 2 illustrated functional diagram shows the most important for the control of the implements of a Winterdienststreufzeugmaschines electrical and hydraulic components.
  • programming of the attachment operation is carried out in advance on a computer 30 by means of software.
  • some operating parameters that are relevant for the operation of the winter service litter vehicle can already be determined in advance.
  • the results of the programming are then stored on a memory card 31, for example a compact flash card, in order to be able to transmit them to the controller 2 of the winter service grunt vehicle.
  • the memory card 31 is inserted into an operating unit 29 and read from this.
  • the operating unit 29 is also provided for allowing an operator, for example the driver, to make settings himself via a keyboard.
  • the operating unit 29 may preferably be separably connected to the controller 2 of the vehicle via a CAN bus (Controller Area Network) 28.
  • the controller 2 receives in this way the preprogrammed settings that are stored on the memory card 31, and optionally inputs that the driver makes via the operating unit 29. This information determines the setpoints SW for the attached implements of the vehicle. Manual inputs by the driver can be, for example, the specification of the spread density or the spread width, if these parameters are not automatically determined.
  • FIG. 2 illustrated functional diagram of a winter maintenance vehicle includes a grit container 20, the grit, such as salt, record. From the grit container 20, the grit is conveyed by means of a screw conveyor 19 in the direction of a spreader 18, such as a rotating spreading plate. In order to improve the thawing action of the salt to be scattered, it is supplied with brine before being spread on the road surface.
  • the brine passes from brine tank 21 via a line 22 with a valve 23 and a pump to the spreader 18.
  • the spreader 18, the screw conveyor 19 and the brine pump are each driven by hydraulic motors 4, 5, 6.
  • the hydraulic energy required for this purpose is generated by the auxiliary motor 1.
  • the auxiliary engine 1 drives to a hydraulic pump 3, which promotes hydraulic oil via a hydraulic pressure line 7 to a hydraulic proportional control unit 26. This divides the hydraulic flow on three pressure lines 8, 9, 10, which lead to the hydraulic motors 4, 5, 6 of the respective attachments.
  • the drive of the screw conveyor 19 via the hydraulic motor 4, which is connected to the pressure line 8, the drive of the hydraulic motor 5 for the spreader 18 via the pressure line 9, and connected to the pressure line 10 hydraulic motor 6 drives a pump for conveying the Brine from brine tank 21 on.
  • an operating parameter is the driving speed of the winter maintenance vehicle, the is sent via the connection 11 to the controller 2.
  • the regulation of the rotational speed of the auxiliary motor is possible only with the preprogrammed settings and the settings made via the operating unit 29, in addition to, for example, the rotational speeds of the hydraulic motors 4, 5, 6 of the spreader 18, the screw conveyor 19 and the Brine pump, possibly taking into account transmission ratios. These are sampled by encoders with specific pulses and sent via connections 13, 14, 15 to the controller 2. In addition, the current speed of the auxiliary motor 1 is measured and transmitted via the connection 12 to the controller 2.
  • the microprocessor 27 may also receive information from a road condition sensor 24 which measures the temperature of the road surface.
  • the road condition sensor may also provide other information about the condition of the road, such as the presence of snow or ice, or the moisture of the road.
  • Information about the position of the vehicle may be given by a GPS sensor 25.
  • weather data from weather maps can be taken into account or the road width can be determined by comparison with a database.
  • the scattering properties can be further adapted to the ambient conditions without the driver having to make manual adjustments via the operating unit 29.
  • the microprocessor 27 determines the manipulated variables SG for the hydraulic proportional control unit 26 from the actual values IW, the desired values SW and the data on the position of the vehicle and the state of the road surface and transmits these via the connection 17.
  • the manipulated variables SG further include the rotational speed of the Auxiliary motor 1, which depends on the operating parameters and is transmitted via the connection 16 to the auxiliary motor 1.
  • the speed of the auxiliary motor 1 is then adjusted accordingly, whereby the hydraulic pump 3 possibly taking into account safety surcharges, which are intended to absorb power peaks, promotes only the required amount of hydraulic oil and the advantages mentioned above are achieved.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)
  • Control Of Fluid Gearings (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Description

Die Erfindung betrifft ein System und ein Verfahren zur Steuerung von Anbaugeräten für Winterdienststreufahrzeuge, insbesondere Streuvorrichtungen.The invention relates to a system and a method for controlling attachments for winter service spreading vehicles, in particular spreaders.

Anbaugeräte für Winterdienstfahrzeuge, wie beispielsweise Streugeräte an Winterdienststreufahrzeugen, werden mittels Hydraulikmotoren betrieben. Ein Hydraulikmotor ist über Druckleitungen mit einer Hydraulikpumpe verbunden, wird durch von der Hydraulikpumpe gefördertes Hydrauliköl angetrieben und wandelt die Energie des Hydrauliköls in mechanische (Bewegungs-) Energie um. Die Hydraulikpumpe wird wiederum von einem vom Fahrzeugmotor verschiedenen Hilfsmotor, wie beispielsweise einem Dieselmotor, einem Benzinmotor oder einem Elektromotor angetrieben. Die Steuerung der Leistung des Hydraulikmotors erfolgt mittels Ventilen, die das von der Hydraulikpumpe geförderte Hydrauliköl entweder dem Hydraulikmotor zuführen oder bei nicht benötigter Leistung zurück in einen Tank leiten. Ein System nach dem Oberbegriff von Anspruch 1 ist in DE 2011 894 A beschrieben.Attachments for winter maintenance vehicles, such as spreaders on Winterdienststreufahrzeugen be operated by hydraulic motors. A hydraulic motor is connected to a hydraulic pump via pressure lines, is driven by hydraulic oil delivered by the hydraulic pump, and converts the energy of the hydraulic oil into mechanical (kinetic) energy. The hydraulic pump is in turn driven by a different from the vehicle engine auxiliary engine, such as a diesel engine, a gasoline engine or an electric motor. The control of the power of the hydraulic motor by means of valves that supply the pumped by the hydraulic pump hydraulic oil either the hydraulic motor or conduct at unnecessary power back into a tank. A system according to the preamble of claim 1 is in DE 2011 894 A described.

Aufgabe der vorliegenden Erfindung ist es, ein solches System zur Steuerung von Anbaugeräten an Winterdienststreufahrzeugen zu verbessern.The object of the present invention is to improve such a system for controlling implements on winter service spreading vehicles.

Die Aufgabe wird durch ein System und ein Verfahren gemäß den unabhängigen Ansprüchen gelöst. Vorteilhafte Ausgestaltungen und Weiterbildungen sind in den davon abhängigen Ansprüchen angegeben.The object is achieved by a system and a method according to the independent claims. Advantageous embodiments and further developments are specified in the dependent claims.

Ein erfindungsgemäßes System zur Steuerung eines Anbaugeräts für ein Winterdienststreufahrzeug umfasst die eingangs genannten Komponenten, nämlich insbesondere den Hilfsmotor, die von dem Hilfsmotor angetriebene Hydraulikpumpe und den Hydraulikmotor, der über die Hydraulikpumpe mit Hydraulikfluid versorgt wird.A system according to the invention for controlling an attachment for a winter service spreading vehicle comprises the aforementioned components, namely in particular the auxiliary motor, the hydraulic pump driven by the auxiliary motor and the hydraulic motor supplied with hydraulic fluid via the hydraulic pump.

Das erfindungsgemäße System ist eingerichtet, die Drehzahl des Hilfsmotors abhängig von zumindest einem Betriebsparameter, der für den Betrieb des mindestens einen Anbaugeräts relevant ist, automatisch zu ermitteln und einzustellen, wobei die Betriebsparameter einen oder mehrere der folgenden Parameter umfassen: Streubreite, Streudichte von Salz, Streudichte von Sole, Soleanteil und Fahrgeschwindigkeit des Fahrzeugs. Aus diesen Betriebsparametern kann nämlich die für den Betrieb des Anbaugeräts benötigte Leistung und Ölmenge des hydraulischen Systems bereits ohne zusätzliche eventuell schwierig zu erfassende Parameter, beispielsweise des Hydrauliksystems, ermittelt werden, da die benötigten Drehzahlen, d.h. Schluckvolumina der Hydraulikmotoren für einen bestimmten Betriebszustand, bekannt sind. Weiter ist das Schluckvolumen der Hydraulikpumpe bekannt. Somit kann die benötigte Drehzahl des Hilfsmotors ermittelt und eingestellt werden.The system according to the invention is set up to automatically determine and set the rotational speed of the auxiliary engine as a function of at least one operating parameter that is relevant for the operation of the at least one attachment, the operating parameters comprising one or more of the following parameters: spreading width, spreading density of salt, Spread density of brine, brine fraction and vehicle speed. Namely, from these operating parameters, the power and oil quantity of the hydraulic system required for the operation of the attachment can already be determined without additional possibly difficult-to-grasp parameters, for example of the hydraulic system, since the required speeds, i. Swing volumes of the hydraulic motors for a specific operating condition, are known. Next, the displacement of the hydraulic pump is known. Thus, the required speed of the auxiliary motor can be determined and adjusted.

Vorzugsweise wird daher die Drehzahl des Hilfsmotors unter Berücksichtigung der Schluckvolumina der Hydraulikpumpe und des mindestens einen Hydraulikmotors ermittelt und eingestellt, wobei außerdem die Drehzahl des mindestens einen Hydraulikmotors berücksichtigt wird, die aufgrund der relevanten Betriebsparameter zum Antreiben des Anbaugeräts erforderlich ist. Somit kann die Drehzahl des Hilfsmotors nur anhand von im System ohnehin bekannten oder vorgegebenen Parametern geregelt werden, ohne dass zusätzliche, für den konventionellen Betrieb des Winterdienststreufahrzeugs nicht notwendige, Parameter ermittelt oder erfasst werden müssen.Preferably, therefore, the rotational speed of the auxiliary motor is determined and adjusted taking into account the displacement volumes of the hydraulic pump and the at least one hydraulic motor, wherein also the rotational speed of the at least one hydraulic motor is taken into account, which is required for driving the attachment due to the relevant operating parameters. Thus, the speed of the auxiliary motor can be controlled only on the basis of already known or predetermined parameters in the system, without additional, not necessary for the conventional operation of the winter service scattering vehicle, parameters must be determined or detected.

Im Gegensatz dazu läuft ein Hilfsmotor in konventionellen Systemen stets mit einer nicht veränderbaren konstanten Drehzahl und treibt dementsprechend eine Hydraulikpumpe mit konstanter Leistung an. Das Anbaugerät benötigt jedoch nicht zu jedem Zeitpunkt die volle Leistung, die durch den aufgebauten Druck der Hydraulikpumpe bereitgestellt wird. Daher ist erfindungsgemäß die Drehzahl des Hilfsmotors auf den tatsächlich benötigten Wert einstellbar. Das heißt, bei dem erfindungsgemäßen System läuft der Hilfsmotor mit einer veränderlichen Drehzahl, die individuell ermittelt und eingestellt wird, und die demnach an sich verändernde Betriebsparameter angepasst werden kann.In contrast, in conventional systems, an auxiliary engine always runs at a constant speed that can not be changed, and accordingly drives a constant-force hydraulic pump. However, the attachment does not require full power at all times provided by the built-up pressure of the hydraulic pump. Therefore, according to the invention, the rotational speed of the auxiliary motor can be set to the actually required value. That is, in the system according to the invention, the auxiliary engine runs at a variable speed, which is determined and set individually, and which can therefore be adapted to changing operating parameters.

Durch die leistungsgesteuerte Drehzahl des Hilfsmotors verringert das erfindungsgemäße System die Gefahr einer Überhitzung des Hydrauliköls, da stets nur die für den Betrieb des Anbaugeräts benötigte Menge Hydrauliköl durch die Hydraulikpumpe gefördert wird. Darüber hinaus erzielt die Erfindung eine Lärmverringerung insbesondere bei Stillstand des Fahrzeugs, die sich positiv auf die Umgebung auswirkt. Zudem bedeutet der geringere Kraftstoffverbrauch aufgrund der angepassten Drehzahl des Hilfsmotors auf der einen Seite eine Verringerung der Betriebskosten des Winterdienststreufahrzeugs und auf der anderen Seite eine Schonung der Umwelt. Schließlich ist als Vorteil ein geringerer Verschleiß des Hilfsmotors zu nennen, da er häufig mit niedriger Drehzahl läuft.Due to the power-controlled speed of the auxiliary motor system of the invention reduces the risk of overheating of the hydraulic oil, since only the amount of hydraulic oil required for the operation of the attachment is always funded by the hydraulic pump. In addition, the invention achieves a noise reduction, especially at standstill of the vehicle, which has a positive effect on the environment. In addition, the lower fuel consumption due to the adjusted speed of the auxiliary engine on the one hand means a reduction in the operating costs of the winter service gritter vehicle and on the other hand a conservation of the environment. Finally, as an advantage less wear of the auxiliary motor should be mentioned, since it often runs at low speed.

Als Anbaugeräte für ein Winterdienststreufahrzeug kommen insbesondere eine Fördereinheit zum Fördern von Streugut aus einem Streugutbehälter und eine Streueinrichtung zum Verteilen des geförderten Streuguts auf einer zu bestreuenden Fläche zum Einsatz. Bei Einsatz im Winterdienst fördert beispielsweise ein Förderband oder eine Förderschnecke Streusalz auf einen Streuteller, der das Streusalz mittels einer rotierenden Bewegung auf einer Fahrbahn verteilt, um die Gefahr von Straßenglätte durch Schnee und Eis zu verringern.As attachments for a Winterdienststreufahrzeug especially a conveyor unit for conveying grit from a grit container and a scattering device for distributing the subsidized grit on a surface to be spread are used. For example, when used in winter service, a conveyor or auger conveys road salt onto a spreading plate which distributes the road salt over a roadway by means of a rotating motion to reduce the risk of road slippery snow and ice.

Um das Streusalz mit Sole anfeuchten zu können, kann als weiteres Anbaugerät oder als Komponente eines Anbaugeräts eine Solezufuhr vorgesehen sein. Hierbei wird eine Pumpe mittels des Hilfsmotors über einen Hydraulikmotor angetrieben, die die Sole aus einem Tank zum geförderten Streusalz pumpt, so dass Sole und Streusalz vor dem Verteilen auf die Fahrbahn vermischt werden.In order to moisten the road salt with brine, a brine supply can be provided as another attachment or as a component of an attachment. Here, a pump is driven by means of the auxiliary motor via a hydraulic motor which pumps the brine from a tank to the conveyed road salt, so that brine and road salt are mixed before spreading on the road.

Wie erwähnt, wird die Drehzahl des Hilfsmotors erfindungsgemäß abhängig von Betriebsparametern des mindestens einen Anbaugeräts automatisch ermittelt und eingestellt. Die Betriebsparameter umfassen dabei einen oder mehrere der folgenden Parameter: Streubreite, Streudichte von Salz, Streudichte von Sole, Soleanteil und Fahrgeschwindigkeit des Winterdienststreufahrzeugs. Diese Parameter sind bereits aus der Steuerung des Anbaugeräts, wie beispielsweise eines Streugeräts, bekannt. Allein auf Basis dieser bekannten Werte ist schon die Regulierung der Drehzahl des Hilfsmotors möglich. Es werden keine zusätzlichen Parameter durch weitere eventuell teure Sensorsysteme, die beispielsweise das Hydrauliksystem überwachen, benötigt, obgleich diese wie unten beschrieben zusätzlich zu den bekannten Parametern aus der Steuerung des Anbaugeräts für die Einstellung der Drehzahl des Hilfsmotors einsetzbar sind.As mentioned, the speed of the auxiliary motor according to the invention is automatically determined and adjusted depending on operating parameters of the at least one attachment. The operating parameters comprise one or more of the following parameters: spread, spreading density of salt, spreading density of brine, brine fraction and driving speed of the winter utility vehicle. These parameters are already known from the control of the attachment, such as a spreader. Alone on the basis of these known values is already the regulation of the speed of the auxiliary motor possible. There are no additional parameters through further possibly expensive sensor systems, for example Although these may be used to control the speed of the assist motor, as described below, in addition to the known parameters of the implement control.

Die Streubreite wird abhängig von der Straßenbreite oder allgemein der Breite der zu bestreuenden Fläche beispielsweise vom Fahrer des Winterdienststreufahrzeugs festgelegt. Um den Fahrer zu entlasten, kann dies auch automatisch geschehen, indem beispielsweise die Position des Fahrzeugs mittels GPS ermittelt wird und durch Vergleich mit einer Datenbank, die Informationen über Straßen und Streckenabschnitte enthält, eingestellt werden.The spread is determined depending on the road width or generally the width of the area to be spread, for example, by the driver of the Winterdienststreufahrzeugs. To relieve the driver, this can also be done automatically, for example, by the position of the vehicle is determined by GPS and set by comparison with a database containing information about roads and sections.

Die einzustellende Streudichte von Salz oder Sole wird von den Umgebungsverhältnissen, wie beispielsweise Temperatur, Luftfeuchtigkeit oder Straßenzustand beeinflusst, wobei die Streudichte von Sole bei der reinen Flüssigstreuung von Bedeutung ist. Die Streudichte kann wiederum manuell durch den Fahrer oder automatisch eingestellt werden. Hierzu kann wieder ein GPS-gestütztes System zum Einsatz kommen, das anhand der Position des Winterdienststreufahrzeugs und anhand von Wetterdaten die optimale Streudichte bestimmt. Die Wetterdaten können zentral von einem Wetterdienst oder von Wetterstationen entlang der befahrenen Strecke bereitgestellt werden. Die ermittelten Parameter können dann zentral ausgewertet und an das Fahrzeug gesendet werden, oder die Auswertung der Daten und die Ermittlung der Streudichte erfolgt im Fahrzeug direkt.The spread density of salt or brine to be set is influenced by the ambient conditions, such as temperature, humidity or road conditions, whereby the scattering density of brine in the case of pure liquid scattering is important. The spreading density can in turn be adjusted manually by the driver or automatically. For this purpose, again a GPS-based system can be used, which determines the optimum spreading density based on the position of the winter service litter vehicle and on the basis of weather data. The weather data can be provided centrally by a weather service or by weather stations along the route being traveled. The determined parameters can then be centrally evaluated and sent to the vehicle, or the evaluation of the data and the determination of the spread density takes place directly in the vehicle.

Um den Straßenzustand zu ermitteln, können neben der manuellen Eingabe durch den Fahrer auch Straßenzustandsensoren zum Einsatz kommen. Diese ermitteln beispielsweise durch Infrarot- und/oder Mikrowellenstrahlung, ob die Straße nass, vereist oder trocken ist und wie groß die Feuchtigkeitsmenge ist. Anhand dieser Informationen wird dann die Streudichte ermittelt.In order to determine the road condition, in addition to the manual input by the driver and road condition sensors can be used. These determine, for example by infrared and / or microwave radiation, whether the road is wet, icy or dry and how large the amount of moisture. Based on this information, the scatter density is then determined.

Ein weiterer Parameter kann der Soleanteil, d.h. der prozentuale Anteil von Sole in der Mischung aus Streusalz und Sole sein. Streusalz wird zumeist nicht alleine, sondern in einer Mischung mit Sole auf die Straße ausgebracht. Dies dient zum einen der Anfeuchtung des Streusalzes, um die Verteilung auf der Straßenoberfläche zu verbessern. Zum anderen wird die Tauwirkung des Streusalzes durch das Mischen mit Sole verbessert. Die Sole wird dabei abhängig von Parametern, die wie oben beschrieben ermittelt oder eingestellt werden können, aus einem separaten Tank vor dem Streuen mit dem Streusalz vermischt. Die Menge der Sole kann dabei erhöht oder verringert werden, wobei üblicherweise ein Mischungsverhältnis von 30 Gewichtsprozent Sole und 70 Gewichtsprozent Streusalz verwendet wird. Da hierfür ebenfalls Hydraulikmotoren betätigt werden, die mittels einer Hydraulikpumpe angetrieben werden, kann die Drehzahl des Hilfsmotors an die Menge der Sole angepasst werden.Another parameter may be the proportion of brine, ie the percentage of brine in the mixture of road salt and brine. Road salt is usually not alone, but spread in a mixture with brine on the street. This serves for a moistening of the road salt to the distribution on the Road surface to improve. On the other hand, the thawing effect of the road salt is improved by mixing with brine. Depending on parameters which can be determined or set as described above, the brine is mixed with the road salt from a separate tank before being spread. The amount of brine can be increased or decreased, usually a mixing ratio of 30 weight percent brine and 70 weight percent road salt is used. Since this also hydraulic motors are operated, which are driven by a hydraulic pump, the speed of the auxiliary motor can be adapted to the amount of brine.

Ein weiterer Parameter, der für die Ermittlung und Einstellung der Drehzahl des Hilfsmotors erfasst wird, ist die Fahrgeschwindigkeit des Winterdienststreufahrzeugs. Je schneller das Fahrzeug unterwegs ist, desto mehr Leistung wird von den Anbaugeräten eingefordert und dementsprechend höher muss die Leistung des Hilfsmotors sein. Wenn bei einem Stillstand des Winterdienststreufahrzeugs, beispielsweise an einer roten Ampel, das Anbaugerät ebenfalls stillstehen oder zumindest langsamer laufen soll, kann die Drehzahl des Hilfsmotors entsprechend reduziert werden, was zu einer Reduzierung von Lärm und Kraftstoffverbrauch führt. Bei schnellerer Fahrt des Winterdienststreufahrzeugs kann dementsprechend die Drehzahl des Hilfsmotors erhöht werden, um ausreichend hydraulische Energie für die Anbaugeräte bereitzustellen.Another parameter, which is detected for the determination and adjustment of the speed of the auxiliary motor, is the driving speed of the Winterdienststreufahrzeugs. The faster the vehicle is on the road, the more power is required from the implements and accordingly the performance of the auxiliary engine must be higher. If at a standstill of Winterdienststreufzeugzeugs, for example, at a red light, the implement also to stand still or run at least slower speed of the auxiliary motor can be reduced accordingly, resulting in a reduction of noise and fuel consumption. Accordingly, as the winter service sweeper vehicle travels faster, the speed of the auxiliary engine can be increased to provide sufficient hydraulic power to the implements.

Das System umfasst vorzugsweise eine Referenztabelle, in der zu verschiedenen Konstellationen von Anbaugeräten und Betriebsparametern die zugehörige benötigte Drehzahl für den Hilfsmotor hinterlegt ist. Auf diese Weise kann die Drehzahl des Hilfsmotors sehr einfach gesteuert werden. Die Werte in der Referenztabelle können beispielsweise auf empirisch gewonnenen Werten beruhen.The system preferably comprises a reference table in which the associated required speed for the auxiliary motor is stored for different constellations of implements and operating parameters. In this way, the speed of the auxiliary motor can be controlled very easily. For example, the values in the reference table may be based on empirically derived values.

In einer vorteilhaften Ausgestaltung der Erfindung ist das System eingerichtet, die Drehzahl des Hilfsmotors höher als die für den Betrieb des mindestens einen Anbaugeräts erforderliche Drehzahl zu wählen und überschüssiges Hydrauliköl in einen Tank zu fördern. Um unvorhersehbare Leistungsspitzen des Anbaugeräts abzufangen, wird zu der aus den Betriebsparametern ermittelten Drehzahl des Hilfsmotors ein Sicherheitsaufschlag gewählt. Dadurch läuft auch die Hydraulikpumpe mit erhöhter Drehzahl und fördert so zusätzliches Hydrauliköl. Soweit dieses nicht benötigt wird, wird es in den Tank zurück gefördert. Durch diesen Sicherheitsaufschlag ist gewährleistet, dass dem Hydraulikmotor des Anbaugeräts immer genügend hydraulischer Druck zur Verfügung steht.In an advantageous embodiment of the invention, the system is set up to select the speed of the auxiliary motor higher than the speed required for the operation of the at least one attachment and to promote excess hydraulic oil in a tank. In order to absorb unpredictable power peaks of the attachment, a safety surcharge is selected for the determined from the operating parameters speed of the auxiliary motor. This also works the hydraulic pump with increased speed and thus promotes additional hydraulic oil. As far as this is not needed, it is pumped back into the tank. This safety impact ensures that the hydraulic motor of the attachment always has enough hydraulic pressure.

Nach einem Stillstand des Anbaugeräts kann es vorkommen, dass zum Anlaufen mehr Druck als zum Betrieb benötigt wird. Deshalb ist das System vorzugsweise eingerichtet, die Drehzahl des Hilfsmotors nach einem Stillstand des Anbaugeräts kurzzeitig höher als die aus den Betriebsparametern ermittelte Drehzahl zu wählen. Dadurch steht dem Hydrauliksystem auch nach einem Stillstand genügend Druck zur Verfügung, und es werden eventuelle Anlaufprobleme, beispielsweise einer Förderschnecke, verhindert.After the implement has come to a standstill, it may happen that more pressure is required to start up than to operate. Therefore, the system is preferably configured to select the speed of the auxiliary motor after a standstill of the attachment briefly higher than the determined from the operating parameters speed. As a result, the hydraulic system is at a standstill sufficient pressure available, and there are any startup problems, such as a screw conveyor, prevented.

In einer weiteren Ausgestaltung der Erfindung kann vorgesehen sein, die Drehzahl des Hilfsmotors zu erfassen. Durch ein Messen der Drehzahl des Hilfsmotors kann eine mögliche Motordrückung des Hilfsmotors erkannt werden. In diesem Fall ist die Drehzahl des Hilfsmotors zu niedrig und liefert nicht genügend hydraulische Energie für den Betrieb des Anbaugeräts. Die Drehzahl des Hilfsmotors kann dann angehoben werden. Hierzu ist es unter Umständen erforderlich, die Leistungsanforderung der Anbaugeräte zu reduzieren, bis der Hilfsmotor wieder die Drehzahl im Arbeitsbereich erreicht hat. Daraufhin kann dann die Drehzahl in einen höheren Bereich angehoben werden, um die Hydraulikmotoren mit ausreichend Leistung zu versorgen.In a further embodiment of the invention can be provided to detect the speed of the auxiliary motor. By measuring the rotational speed of the auxiliary engine, a possible engine retardation of the auxiliary engine can be detected. In this case, the speed of the auxiliary motor is too low and does not provide enough hydraulic energy for the operation of the attachment. The speed of the auxiliary motor can then be raised. For this purpose, it may be necessary to reduce the power requirement of the implements until the auxiliary motor has reached the speed in the work area again. Then, the speed can be raised to a higher range to provide the hydraulic motors with sufficient power.

Weiter kann vorgesehen sein, die Drehzahl des zumindest einen Hydraulikmotors zu erfassen, so dass ein möglicher Ölmangel durch eine zu niedrige Drehzahl des Hydraulikmotors erkannt werden kann.Furthermore, it can be provided to detect the rotational speed of the at least one hydraulic motor, so that a possible lack of oil can be detected by a too low rotational speed of the hydraulic motor.

Im Folgenden wird die Erfindung beispielhaft anhand der begleitenden Zeichnungen beschrieben. Darin zeigen:

  • Figur 1 eine vereinfachte, schematische Darstellung eines Hilfsmotors mit einer Steuerung und Hydraulikmotoren und
  • Figur 2 eine schematische Darstellung der elektrischen und hydraulischen Komponenten eines Winterdienststreufahrzeugs zur Steuerung der Anbaugeräte.
The invention will now be described by way of example with reference to the accompanying drawings. Show:
  • FIG. 1 a simplified schematic representation of an auxiliary engine with a controller and hydraulic motors and
  • FIG. 2 a schematic representation of the electrical and hydraulic components of a Winterdienststreufahrzeugs for controlling the implements.

In Figur 1 ist die Anordnung eines Hilfsmotors 1 sowie einer angeschlossenen Steuerung 2 mit zwei Hydraulikmotoren 4, 5 vereinfacht dargestellt. Die Steuerung 2 regelt die Drehzahl des Hilfsmotors 1, beispielsweise eines Dieselmotors, eines Benzinmotors oder eines Elektromotors, indem sie Sollwerte sowie Istwerte und Betriebsparameter verarbeitet und daraus die Drehzahl für den Hilfsmotor 1 ermittelt. Um die ermittelte Drehzahl an den Hilfsmotor 1 übertragen zu können, ist der Hilfsmotor 1 über eine elektrische Verbindung 16 mit der Steuerung 2 verbunden.In FIG. 1 is the arrangement of an auxiliary motor 1 and a connected controller 2 with two hydraulic motors 4, 5 shown simplified. The controller 2 controls the speed of the auxiliary engine 1, for example, a diesel engine, a gasoline engine or an electric motor by processing setpoints and actual values and operating parameters and determines therefrom the speed for the auxiliary motor 1. In order to transmit the determined speed to the auxiliary motor 1, the auxiliary motor 1 is connected via an electrical connection 16 to the controller 2.

Der Hilfsmotor 1 treibt eine Hydraulikpumpe 3 an, die über eine Druckleitung 7 Hydrauliköl zu Hydraulikmotoren 4, 5 leitet. Die Hydraulikmotoren 4, 5 treiben jeweils ein Anbaugerät, wie beispielsweise eine Streueinrichtung, an. Über die Verbindung 12 bekommt die Steuerung 2 eine Rückmeldung vom Hilfsmotor 1 über dessen momentane Drehzahl, die neben den weiteren Betriebsparametern bei der Ermittlung der Drehzahl des Hilfsmotors 1 miteinbezogen werden kann.The auxiliary engine 1 drives a hydraulic pump 3, which via a pressure line 7 hydraulic oil to hydraulic motors 4, 5 passes. The hydraulic motors 4, 5 each drive an attachment, such as a spreader. Via the connection 12, the controller 2 receives a feedback from the auxiliary engine 1 about its instantaneous speed, which can be included in the determination of the speed of the auxiliary motor 1 in addition to the other operating parameters.

Das in Figur 2 dargestellte Funktionsschema zeigt die für die Steuerung der Anbaugeräte eines Winterdienststreufahrzeugs wichtigsten elektrischen und hydraulischen Komponenten. Bevor das Winterdienststreufahrzeug seinen Dienst aufnimmt, wird eine Programmierung des Betriebs der Anbaugeräte vorab auf einem Computer 30 mittels einer Software vorgenommen. Hierbei können schon einige für den Betrieb des Winterdienststreufahrzeugs relevante Betriebsparameter vorab festgelegt werden. Die Ergebnisse der Programmierung werden dann auf einer Speicherkarte 31, zum Beispiel einer Compact Flash-Card, gespeichert, um sie an die Steuerung 2 des Winterdienststreufahrzeugs übertragen zu können. Die Speicherkarte 31 wird dazu in eine Bedieneinheit 29 eingelegt und von dieser ausgelesen. Die Bedieneinheit 29 ist außerdem dazu vorgesehen, dass ein Bediener, beispielsweise der Fahrer, über eine Tastatur selbst Einstellungen vornehmen kann.This in FIG. 2 illustrated functional diagram shows the most important for the control of the implements of a Winterdienststreufzeugzeugs electrical and hydraulic components. Before the winter service litter vehicle takes up service, programming of the attachment operation is carried out in advance on a computer 30 by means of software. In this case, some operating parameters that are relevant for the operation of the winter service litter vehicle can already be determined in advance. The results of the programming are then stored on a memory card 31, for example a compact flash card, in order to be able to transmit them to the controller 2 of the winter service grunt vehicle. The memory card 31 is inserted into an operating unit 29 and read from this. The operating unit 29 is also provided for allowing an operator, for example the driver, to make settings himself via a keyboard.

Die Bedieneinheit 29 kann über einen CAN-Bus (Controller Area Network) 28 vorzugsweise trennbar mit der Steuerung 2 des Fahrzeugs verbunden sein. Die Steuerung 2 erhält auf diese Weise die vorprogrammierten Einstellungen, die auf der Speicherkarte 31 gespeichert sind, sowie gegebenenfalls Eingaben, die der Fahrer über die Bedieneinheit 29 tätigt. Diese Angaben bestimmen die Sollwerte SW für die anzusteuernden Anbaugeräte des Fahrzeugs. Manuelle Eingaben des Fahrers können zum Beispiel die Angabe der Streudichte oder der Streubreite sein, sofern diese Parameter nicht automatisch ermittelt werden.The operating unit 29 may preferably be separably connected to the controller 2 of the vehicle via a CAN bus (Controller Area Network) 28. The controller 2 receives in this way the preprogrammed settings that are stored on the memory card 31, and optionally inputs that the driver makes via the operating unit 29. This information determines the setpoints SW for the attached implements of the vehicle. Manual inputs by the driver can be, for example, the specification of the spread density or the spread width, if these parameters are not automatically determined.

Das in Figur 2 dargestellte Funktionsschema eines Winterdienstfahrzeugs umfasst einen Streugutbehälter 20, der Streugut, wie zum Beispiel Salz, aufnehmen kann. Aus dem Streugutbehälter 20 wird das Streugut mittels einer Förderschnecke 19 in Richtung einer Streueinrichtung 18, wie beispielsweise einem rotierenden Streuteller, befördert. Um die Auftauwirkung des zu streuenden Salzes zu verbessern, wird diesem vor dem Verteilen auf der Straßenoberfläche Sole zugeführt. Die Sole gelangt aus Soletanks 21 über eine Leitung 22 mit einem Ventil 23 und eine Pumpe zu der Streueinrichtung 18. Die Streueinrichtung 18, die Förderschnecke 19 und die Solepumpe werden jeweils von Hydraulikmotoren 4, 5, 6 angetrieben. Die hierfür benötigte hydraulische Energie wird von dem Hilfsmotor 1 erzeugt.This in FIG. 2 illustrated functional diagram of a winter maintenance vehicle includes a grit container 20, the grit, such as salt, record. From the grit container 20, the grit is conveyed by means of a screw conveyor 19 in the direction of a spreader 18, such as a rotating spreading plate. In order to improve the thawing action of the salt to be scattered, it is supplied with brine before being spread on the road surface. The brine passes from brine tank 21 via a line 22 with a valve 23 and a pump to the spreader 18. The spreader 18, the screw conveyor 19 and the brine pump are each driven by hydraulic motors 4, 5, 6. The hydraulic energy required for this purpose is generated by the auxiliary motor 1.

Der Hilfsmotor 1 treibt dazu eine Hydraulikpumpe 3 an, die über eine hydraulische Druckleitung 7 Hydrauliköl zu einer hydraulischen Proportionalregeleinheit 26 fördert. Diese teilt den Hydraulikstrom auf drei Druckleitungen 8, 9, 10 auf, die zu den Hydraulikmotoren 4, 5, 6 der jeweiligen Anbaugeräte führen. Dabei erfolgt der Antrieb der Förderschnecke 19 über den Hydraulikmotor 4, der an die Druckleitung 8 angeschlossen ist, der Antrieb des Hydraulikmotors 5 für die Streueinrichtung 18 erfolgt über die Druckleitung 9, und der an die Druckleitung 10 angeschlossene Hydraulikmotor 6 treibt eine Pumpe zum Fördern der Sole aus dem Soletank 21 an.The auxiliary engine 1 drives to a hydraulic pump 3, which promotes hydraulic oil via a hydraulic pressure line 7 to a hydraulic proportional control unit 26. This divides the hydraulic flow on three pressure lines 8, 9, 10, which lead to the hydraulic motors 4, 5, 6 of the respective attachments. The drive of the screw conveyor 19 via the hydraulic motor 4, which is connected to the pressure line 8, the drive of the hydraulic motor 5 for the spreader 18 via the pressure line 9, and connected to the pressure line 10 hydraulic motor 6 drives a pump for conveying the Brine from brine tank 21 on.

Um die erforderliche Menge Hydrauliköl bestimmen zu können, die über die Proportionalregeleinheit 26 den Hydraulikleitungen 8, 9, 10 zugeführt werden soll, werden im Betrieb der Anbaugeräte 18, 19 Betriebsparameter erfasst. Ein Betriebsparameter ist die Fahrgeschwindigkeit des Winterdienstfahrzeugs, der über die Verbindung 11 an die Steuerung 2 gesendet wird. Obwohl die Regulierung der Drehzahl des Hilfsmotors auch nur mit den vorprogrammierten Einstellungen und den Einstellungen, die über die Bedieneinheit 29 vorgenommen werden, möglich ist, können zusätzlich zum Beispiel die Drehzahlen der Hydraulikmotoren 4, 5, 6 der Streueinrichtung 18, der Förderschnecke 19 und der Solepumpe, eventuell unter Berücksichtigung von Getriebeübersetzungen miteinbezogen werden. Diese werden von Gebern mit bestimmten Impulsen abgetastet und über Verbindungen 13, 14, 15 an die Steuerung 2 gesendet. Zudem wird die aktuelle Drehzahl des Hilfsmotors 1 gemessen und über die Verbindung 12 an die Steuerung 2 übertragen. Diese Betriebsparameter ergeben zusammen den Ist-Zustand des Fahrzeugs und werden als Istwerte IW von dem Mikroprozessor 27 verarbeitet. Der Mikroprozessor 27 kann zudem noch Informationen von einem Straßenzustandssensor 24, der die Temperatur der Straßenoberfläche misst, erhalten. Der Straßenzustandssensor kann auch noch weitere Informationen über den Zustand der Straße, wie Anwesenheit von Schnee oder Eis oder die Feuchtigkeit der Straße, ermitteln. Informationen über die Position des Fahrzeugs kann ein GPS-Sensor 25 geben. Anhand der Position des Fahrzeugs können beispielsweise Wetterdaten von Wetterkarten berücksichtigt oder die Straßenbreite durch Abgleich mit einer Datenbank ermittelt werden. Somit können die Streueigenschaften weiter an die Umgebungsbedingungen angepasst werden, ohne dass der Fahrer manuell Einstellungen über die Bedieneinheit 29 vornehmen muss.In order to be able to determine the required amount of hydraulic oil which is to be supplied to the hydraulic lines 8, 9, 10 via the proportional control unit 26, operating parameters are recorded during operation of the attachments 18, 19. An operating parameter is the driving speed of the winter maintenance vehicle, the is sent via the connection 11 to the controller 2. Although the regulation of the rotational speed of the auxiliary motor is possible only with the preprogrammed settings and the settings made via the operating unit 29, in addition to, for example, the rotational speeds of the hydraulic motors 4, 5, 6 of the spreader 18, the screw conveyor 19 and the Brine pump, possibly taking into account transmission ratios. These are sampled by encoders with specific pulses and sent via connections 13, 14, 15 to the controller 2. In addition, the current speed of the auxiliary motor 1 is measured and transmitted via the connection 12 to the controller 2. These operating parameters together form the actual state of the vehicle and are processed as actual values IW by the microprocessor 27. The microprocessor 27 may also receive information from a road condition sensor 24 which measures the temperature of the road surface. The road condition sensor may also provide other information about the condition of the road, such as the presence of snow or ice, or the moisture of the road. Information about the position of the vehicle may be given by a GPS sensor 25. On the basis of the position of the vehicle, for example, weather data from weather maps can be taken into account or the road width can be determined by comparison with a database. Thus, the scattering properties can be further adapted to the ambient conditions without the driver having to make manual adjustments via the operating unit 29.

Der Mikroprozessor 27 ermittelt aus den Istwerten IW, den Sollwerten SW sowie den Daten über die Position des Fahrzeugs und den Zustand der Straßenoberfläche die Stellgrößen SG für die hydraulische Proportionalregeleinheit 26 und sendet diese über die Verbindung 17. Die Stellgrößen SG umfassen des Weiteren die Drehzahl des Hilfsmotors 1, die von den Betriebsparametern abhängt und über die Verbindung 16 an den Hilfsmotor 1 übertragen wird. Die Drehzahl des Hilfsmotors 1 wird daraufhin entsprechend angepasst, wodurch die Hydraulikpumpe 3 eventuell unter Berücksichtigung von Sicherheitsaufschlägen, die Leistungsspitzen abfangen sollen, nur die benötigte Menge Hydrauliköl fördert und die eingangs genannten Vorteile erzielt werden.The microprocessor 27 determines the manipulated variables SG for the hydraulic proportional control unit 26 from the actual values IW, the desired values SW and the data on the position of the vehicle and the state of the road surface and transmits these via the connection 17. The manipulated variables SG further include the rotational speed of the Auxiliary motor 1, which depends on the operating parameters and is transmitted via the connection 16 to the auxiliary motor 1. The speed of the auxiliary motor 1 is then adjusted accordingly, whereby the hydraulic pump 3 possibly taking into account safety surcharges, which are intended to absorb power peaks, promotes only the required amount of hydraulic oil and the advantages mentioned above are achieved.

Claims (13)

  1. A system for controlling at least one mounted implement (18, 19) for a winter-service spreading vehicle,, comprising an auxiliary motor (1), a hydraulic pump (3) driven by means of the auxiliary motor (1) and at least one hydraulic motor (4, 5, 6) connected to the hydraulic pump (3) via pressure lines (7, 8, 9, 10) for driving the at least one mounted implement (18, 19), characterized in that the system is adapted to automatically determine and adjust a rotational speed of the auxiliary motor (1) in dependence on at least one operating parameter relevant for the operation of the at least one mounted implement (18, 19), wherein the operating parameters comprise one or several of the following parameters: spreading width, spreading density of salt, spreading density of brine, brine proportion and driving speed of the winter-service spreading vehicle.
  2. The system according to claim 1, characterized in that the system is adapted to determine and adjust the rotational speed of the auxiliary motor (1) taking account of the swallowing capacity of the hydraulic pump (3), the swallowing capacity of the at least one hydraulic motor (4, 5, 6) and the rotational speed of the at least one hydraulic motor (4, 5, 6) required for driving the mounted implement (18, 19) due to the at least one relevant operating parameter.
  3. The system according to claim 1 or 2, characterized by a reference table, wherein the system is adapted to determine the rotational speed of the auxiliary motor (1) from a comparison of the operating parameters with values from the reference table.
  4. The system according to any of the claims 1 to 3, characterized in that the system is adapted to adjust the rotational speed of the auxiliary motor (1) to be higher than the rotational speed required for operating the at least one mounted implement (18, 19), and to convey excess hydraulic fluid conveyed by the hydraulic pump (3) into a tank.
  5. The system according to any of the claims 1 to 4, characterized in that the system is adapted to adjust the rotational speed of the auxiliary motor (1) after a standstill of the at least one mounted implement (18, 19) to be momentarily higher than the rotational speed determined from the operating parameters.
  6. The system according to any of the claims 1 to 5, characterized by means for capturing the rotational speed of the auxiliary motor (1).
  7. The system according to any of the claims 1 to 6, characterized by means for capturing the rotational speed of the at least one hydraulic motor (4, 5, 6).
  8. A method for controlling at least one mounted implement (18, 19) for a winter-service spreading vehicle, wherein the at least one mounted implement (18, 19) is driven by means of at least one hydraulic motor (4, 5, 6) supplied with hydraulic fluid via a hydraulic pump (3) driven by means of an auxiliary motor (1), characterized by the following steps of:
    - capturing and/or determining at least one operating parameter relevant for the operation of the at least one mounted implement (18, 19), wherein the operating parameters comprise one or several of the following parameters: spreading width, spreading density of salt, spreading density of brine, brine proportion and driving speed of the winter-service spreading vehicle,
    - determining a rotational speed for the auxiliary motor (1) in dependence on the at least one operating parameter and
    - adjusting a rotational speed of the auxiliary motor (1) in dependence on the determined rotational speed.
  9. The method according to claim 8, characterized in that the rotational speed of the auxiliary motor (1) is determined and adjusted taking account of the swallowing capacity of the hydraulic pump (3), the swallowing capacity of the at least one hydraulic motor (4, 5, 6) and the rotational speed of the at least one hydraulic motor (4, 5, 6) required for driving the mounted implement (18, 19) due to the at least one relevant operating parameter.
  10. The method according to claim 8 or 9, characterized in that the rotational speed of the auxiliary motor (1) is adjusted to be higher than a determined rotational speed required for operating the at least one mounted implement (18, 19) and excess hydraulic fluid is conveyed into a tank.
  11. The method according to any of the claims 8 to 10, characterized in that the rotational speed of the auxiliary motor (1) is adjusted after a standstill of the at least one mounted implement (18, 19) to be momentarily higher than the rotational speed determined from the operating parameters.
  12. The method according to any of the claims 8 to 11, characterized by the step of capturing the rotational speed of the auxiliary motor (1).
  13. The method according to any of the claims 8 to 12, characterized by the step of capturing the rotational speed of the at least one hydraulic motor (4, 5, 6).
EP09013374.5A 2008-10-23 2009-10-22 System and method for controlling extension devices for winter vehicles Active EP2180099B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10991180B2 (en) 2017-04-21 2021-04-27 Engrenage Provincial Inc. Controller area network (CAN) message scanner for a winter service vehicle, and method of scanning a CAN message

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11193249B2 (en) * 2019-05-28 2021-12-07 Ari J. Ostrow Robotic de-icer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2229812A1 (en) * 1973-05-17 1974-12-13 Lebon Et Cie Spreader vehicle for use on roads - has screw conveyor feeding separate tubes for liq. or solids above rotating disc

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10991180B2 (en) 2017-04-21 2021-04-27 Engrenage Provincial Inc. Controller area network (CAN) message scanner for a winter service vehicle, and method of scanning a CAN message

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EP2180099A3 (en) 2014-11-19
DE102008052878A1 (en) 2010-06-02
EP2180099A2 (en) 2010-04-28
DK2180099T3 (en) 2016-06-13

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