EP2281947B1 - Road finisher with automatic motor control - Google Patents

Road finisher with automatic motor control Download PDF

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Publication number
EP2281947B1
EP2281947B1 EP09008415.3A EP09008415A EP2281947B1 EP 2281947 B1 EP2281947 B1 EP 2281947B1 EP 09008415 A EP09008415 A EP 09008415A EP 2281947 B1 EP2281947 B1 EP 2281947B1
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EP
European Patent Office
Prior art keywords
machine according
engine
control signal
paver
controller
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EP09008415.3A
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German (de)
French (fr)
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EP2281947A1 (en
EP2281947B2 (en
Inventor
Ralf Weiser
Tobias Noll
Martin Dipl.-Ing. Buschmann
Achim Eul
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Joseph Voegele AG
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Joseph Voegele AG
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Application filed by Joseph Voegele AG filed Critical Joseph Voegele AG
Priority to PL09008415.3T priority Critical patent/PL2281947T5/en
Priority to EP09008415.3A priority patent/EP2281947B2/en
Priority to CN2010102071268A priority patent/CN101929123B/en
Priority to US12/821,970 priority patent/US8517628B2/en
Priority to CN201020234322XU priority patent/CN201972075U/en
Publication of EP2281947A1 publication Critical patent/EP2281947A1/en
Priority to US13/919,074 priority patent/US20130287495A1/en
Publication of EP2281947B1 publication Critical patent/EP2281947B1/en
Publication of EP2281947B2 publication Critical patent/EP2281947B2/en
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    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/48—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for laying-down the materials and consolidating them, or finishing the surface, e.g. slip forms therefor, forming kerbs or gutters in a continuous operation in situ

Definitions

  • the present invention relates to a self-propelled machine according to the preamble of claim 1.
  • the self-propelled machine may be a paver.
  • Road pavers are known, for example, from the following publications: DE 20 2007 003 326 U1 . DE 20 2004 016 489 U1 . DE 10 2004 002 658 A1 . DE 299 23 118 U1 . DE 299 20 556 U1 . DE 299 15 875 U1 . DE 296 12 035 U1 . DE 296 12 034 U1 or DE 196 34 503 B4 ,
  • Such road pavers can be driven by a bicycle, as in the DE 299 20 556 U1 described, or about a crawler undercarriage, as in the DE 299 23 118 U1 described. They usually have a Gutbunker that receives the pavement forming the road surface.
  • the Einbaumischgut is transported from the Gutbunker to the rear in the direction of the paver.
  • a transverse distribution device such as a distribution screw
  • the paver still carries a so-called screed, which is arranged in the direction of travel behind the transverse distribution device. It is used for smoothing and compressing the applied road surface and may for this purpose, for example, tamper (vibrating ram), vibrating plates and / or pressure bars have.
  • Road pavers are powered by an engine, which is usually an internal combustion engine. Most commonly diesel engines are used. In addition to driving power, the engine also provides power to operate a generator by which power is generated to operate a variety of components of the paver.
  • the lighting, the controller, pumps for hydraulic components and in particular electric heaters can be operated.
  • Such heaters are usually provided on all components that come into contact with the Einbaumischgut in order to prevent the cooling and solidification of the Einbbaumischgutes to the components of the paver.
  • electrical heating elements are provided on the screed since the built-in material has already cooled the furthest at this point of the paver.
  • Object of the present invention is therefore to reduce the fuel consumption of a paver with structurally simple means possible.
  • the controller of the paver is set up to automatically initiate the starting and / or stopping of the engine upon receipt of at least one specific control signal.
  • the controller of the paver receives thus according to the invention an automatic start, an automatic stop or even a start-stop system. This makes it possible to shut down the engine when certain operating conditions of the paver and / or restart the engine when certain other operating conditions occur. Turning off the engine during certain phases of operation significantly reduces overall fuel requirements.
  • the automatic start and / or shutdown of the engine are compared to a manual start or shutdown two other advantages: Firstly, the engine shutdown a permitting operating phases are used to the maximum, so as to reduce the maximum fuel demand. On the other hand, there is no need for the operator of the finisher to constantly monitor the operating conditions enabling a shutdown of the engine. In the handling of the paver thus occurs compared to conventional pavers no impairment.
  • the paver on a button for generating a start control signal or a stop control signal in order to operate it in a conventional manner.
  • it has at least one sensor for generating a control signal. This allows the automatic recognition of certain operating conditions of the paver and the subsequent automatic start and / or stop of the engine.
  • the sensor does not have to be designed directly for generating a control signal, but it can also transmit only one measured variable to an evaluation circuit or evaluation logic, which in turn generates the control signal for the motor control.
  • the senor is a temperature sensor.
  • the engine can be started and / or stopped depending on the temperature of certain components of the paver. This is particularly interesting for operating conditions in which the engine power is used exclusively or almost exclusively for the heating of certain components of the paver. If, in such an operating state, it is recognized that further heating is not required, the motor can be switched off according to the invention. Compared to a conventional shutdown only the heating elements and a running of the engine at idle, this provides significant fuel savings.
  • such a temperature sensor could be adapted to measure the temperature of a screed of the paver, or a part of the screed (eg, a base screed, a pull-out screed, etc.).
  • Most of the heating power of the paver usually accrues to the screed. However, this does not have to be constantly heated, but only if its temperature has fallen below a predetermined threshold. As soon as a higher temperature threshold was exceeded, in conventional road pavers only the heating elements were switched off again, while the diesel engine continued to run.
  • the present invention now makes it possible for the temperature sensor of the screed (possibly via a suitable evaluation circuit) to emit a control signal, on the basis of which reception the control causes the motor to be switched off. Only when the temperature of the screed drops below a predetermined threshold, the engine is automatically restarted to drive the generator and so to provide the electrical power for the operation of the electric heating elements.
  • a timing element for generating a control signal for the engine control is provided. This time measuring element makes it possible to automatically start and / or switch off the paver after expiry of predetermined time intervals after certain events.
  • the paver on a positioning and / or navigation system.
  • This positioning and / or navigation system can improve the operation of the paver in a variety of ways. With suitable precision of the location measurement, it may possibly allow a fully automatic operation of the paver.
  • the location and / or navigation system is preferably infrared transmitter, radio or satellite-based. All these variants allow precise, wireless location and navigation of the paver.
  • the positioning and / or navigation system is designed to generate a control signal for the controller.
  • the positioning and / or navigation system in this way not only allow the location and orientation of the paver, but also cause the engine to start and / or shutdown of the controller when certain operating conditions or environmental conditions are present.
  • the positioning and / or navigation system could be connected to a device for determining a current distance and / or an expected time of arrival of another construction site vehicle.
  • This other construction site vehicle may, for example, be a truck that delivers built-in material for loading the road finisher.
  • the controller of the road paver can query the current position of the other construction vehicle and calculate the expected arrival time of the approaching construction vehicle from the current distance. Further, if the engine controller has a clock or timing member, the paver's engine may be started at an appropriate time so that the screed and other heated components of the paver have reached the required operating temperature as the other jobsite vehicle arrives.
  • the engine of the paver according to the invention can remain switched off, in order to save considerable amounts of fuel in this way.
  • the device should be designed to determine a current distance and / or an expected time of arrival of another construction site vehicle against this background in order to generate a control signal for the engine control.
  • a starting device for starting the engine in response to receipt of a corresponding control signal, e.g. a starter, a motor-generator unit (thereby saving the starter and alternator), a hydraulic starter by means of pressure accumulator or the like.
  • a starter e.g. a starter, a motor-generator unit (thereby saving the starter and alternator), a hydraulic starter by means of pressure accumulator or the like.
  • a battery is provided in order to provide the starting device with energy even when the engine is off.
  • the road paver 1 has a chassis 2, on which the control station 3 of the road paver 1 is arranged.
  • the road paver 1 can be moved by means of a chassis 4, which in the present case is a wheeled chassis 4 with wheels 5.
  • the chassis 4 is driven by means of a diesel engine 6, which is mounted on the chassis 2 and connected to a generator (not shown) for generating electrical voltage.
  • the road paver 1 further has a Gutbunker 7 for receiving Einbbaumischgut, via a transport device (not shown), for transporting the Einbaumischgutes from the Gutbunker 7 under the control station 3 through to the rear of the paver, and via a transverse distribution device 8, such as a distribution screw for distributing the Einbaumischgutes perpendicular to the direction of the paver 1 over the entire installation width.
  • a screed 10 is mounted on the paver 1. It is used for compressing and smoothing the applied installation material.
  • the road paver 1 further has at least one pump, hydraulic motor or hydrostatic drive unit (not shown) for functional and working components of the machine, and at least one hydraulic circuit comprising a hydraulic medium reservoir.
  • the paver 1 further comprises a controller 11 which is adapted to automatically cause the start and / or shutdown of the motor 6 upon receipt of at least one control signal.
  • a starting device 12 is provided, e.g. a starter powered by an energy store, e.g. a battery 13, regardless of the operating condition of the diesel engine 6 and the generator (not shown) is supplied with electrical power.
  • the energy storage e.g. the battery 13, can be charged during operation of the generator.
  • the starting device 12 may be a motor-generator unit or a hydraulic starter with pressure accumulator as energy storage.
  • the controller 11 is in communication with a temperature sensor 14 on the screed 10.
  • the temperature sensor 14 measures the temperature of the screed 10. He can transmit a control signal to the controller 11 when the temperature of the screed exceeds predetermined temperature thresholds or below.
  • the engine controller 11 is connected to a positioning and navigation system 15.
  • This positioning and navigation system 15 is satellite-based (for example, via GPS) and serves to detect the current position of the road finisher 1. In the present case, it is simultaneously designed to communicate with a compatible positioning and navigation system of another construction vehicle, such as a truck for delivering Einbaumischgut.
  • the positioning and navigation system 15 of the paver 1 can determine the current position and distance of the other construction site vehicle and calculate the expected arrival time of the other construction site vehicle on the paver 1 by suitable processes. This calculation of the expected arrival time can also be made in the controller 11.
  • the operation of the road paver 1 according to the invention can proceed as follows.
  • the road paver 1 In a standby mode, the road paver 1 is in one place and waits for built-in material and / or for a signal to start the installation run. In order to begin as soon as possible with the installation, all heated parts, in particular the screed 10, kept at installation temperature by the heating elements provided for this purpose are operated. As soon as the temperature sensor 14 on the screed 10 (or another temperature sensor on other heated components of the paver 1) recognizes that a predetermined temperature threshold has been exceeded which makes further heating superfluous, the sensor 14 reports this to the engine controller 11 by means of a corresponding control signal The engine controller 11 then switches off the diesel engine 6, since its power is now required neither as drive power for driving nor for the operation of the heating elements.
  • the temperature of the screed 10 will then slowly drop.
  • the temperature sensor 14 detects that the temperature has fallen below a predetermined threshold, it notifies this to the engine controller 11 by another control signal.
  • the engine controller 11 then initiates automatic starting of the engine 6 by means of the starter 12, e.g. of the starter so that the motor 6 can operate the generator and thus provide the electrical power for the heating elements.
  • the automatic shutdown and starting of the engine 6 during the cooling phases of the screed 10 saves considerable amounts of fuel.
  • the paver 1 waits for the arrival of a truck with Einbaumischgut. During this condition, the diesel engine 6 remains switched off to consume no fuel. On the other hand, however, the installation drive should begin as directly as possible following the delivery of the installation batches.
  • the road paver 1 can determine the current position of the approaching truck in order to determine the expected arrival time of the built-in cargo therefrom.
  • information is stored on what period of time for heating the screed 10 to the operating temperature is necessary. This allows the controller 11 to turn on the diesel engine 6 at an appropriate time so that the required operating temperature is reached when the truck arrives. In this way, unnecessarily long heating phases are avoided while at the same time the Einbauffahrt can be added immediately after receipt of the built-in goods.
  • the road paver 1 can be modified in many ways.
  • further sensors for monitoring certain operating conditions of various components of the road paver 1 may be provided, which make a startup and / or shutdown of the engine 6 appear suitable.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Road Paving Machines (AREA)

Description

Die vorliegende Erfindung bezieht sich auf eine selbstfahrende Maschine gemäß dem Oberbegriff des Anspruchs 1. Bei der selbstfahrenden Maschine kann es sich um einen Straßenfertiger handeln.The present invention relates to a self-propelled machine according to the preamble of claim 1. The self-propelled machine may be a paver.

Straßenfertiger sind beispielsweise aus folgenden Veröffentlichungen bekannt: DE 20 2007 003 326 U1 , DE 20 2004 016 489 U1 , DE 10 2004 002 658 A1 , DE 299 23 118 U1 , DE 299 20 556 U1 , DE 299 15 875 U1 , DE 296 12 035 U1 , DE 296 12 034 U1 oder DE 196 34 503 B4 . Solche Straßenfertiger können über ein Radfahrwerk angetrieben werden, wie in der DE 299 20 556 U1 beschrieben, oder über ein Raupenfahrwerk, wie in der DE 299 23 118 U1 beschrieben. Sie verfügen üblicherweise über einen Gutbunker, der das den Straßenbelag bildende Einbaumischgut aufnimmt. Über Transportmittel, beispielsweise Kratzerbänder, wird das Einbaumischgut aus dem Gutbunker zum in Fahrtrichtung hinteren Bereich des Straßenfertigers transportiert. Dort sorgt in der Regel eine Querverteilvorrichtung, beispielsweise eine Verteilerschnecke, für eine Verteilung des angelieferten Einbaumischgutes über die gesamte Einbaubreite. Schließlich führt der Straßenfertiger noch eine sogenannte Einbaubohle mit, die in Fahrtrichtung hinter der Querverteilvorrichtung angeordnet ist. Sie dient zum Glätten und Komprimieren des aufgebrachten Straßenbelages und kann zu diesem Zweck beispielsweise Tamper (Stampfer), vibrierende Glättbleche und/oder Pressleisten aufweisen.Road pavers are known, for example, from the following publications: DE 20 2007 003 326 U1 . DE 20 2004 016 489 U1 . DE 10 2004 002 658 A1 . DE 299 23 118 U1 . DE 299 20 556 U1 . DE 299 15 875 U1 . DE 296 12 035 U1 . DE 296 12 034 U1 or DE 196 34 503 B4 , Such road pavers can be driven by a bicycle, as in the DE 299 20 556 U1 described, or about a crawler undercarriage, as in the DE 299 23 118 U1 described. They usually have a Gutbunker that receives the pavement forming the road surface. About transport, such as scraper belts, the Einbaumischgut is transported from the Gutbunker to the rear in the direction of the paver. There is usually a transverse distribution device, such as a distribution screw, for a distribution of the delivered Einbaumischgutes over the entire installation width. Finally, the paver still carries a so-called screed, which is arranged in the direction of travel behind the transverse distribution device. It is used for smoothing and compressing the applied road surface and may for this purpose, for example, tamper (vibrating ram), vibrating plates and / or pressure bars have.

Angetrieben werden Straßenfertiger mittels eines Motors, bei dem es sich in der Regel um einen Verbrennungsmotor handelt. Am Häufigsten werden Dieselmotoren eingesetzt. Neben der Antriebsleistung stellt der Motor auch Leistung zum Betreiben eines Generators zur Verfügung, mittels dessen Strom zum Betrieb einer Vielzahl von Komponenten des Fertigers erzeugt wird. Mittels des Stroms können beispielsweise die Beleuchtung, die Steuerung, Pumpen für hydraulische Komponenten sowie insbesondere elektrische Heizungen betrieben werden. Solche Heizungen sind in der Regel an sämtlichen Komponenten vorgesehen, die mit dem Einbaumischgut in Kontakt kommen, um ein Erkalten und Erstarren des Einbaumischgutes an den Komponenten des Straßenfertigers zu verhindern. Insbesondere sind elektrische Heizelemente an der Einbaubohle vorgesehen, da sich das Einbaumischgut an diesem Punkt des Straßenfertigers bereits am weitesten abgekühlt hat.Road pavers are powered by an engine, which is usually an internal combustion engine. Most commonly diesel engines are used. In addition to driving power, the engine also provides power to operate a generator by which power is generated to operate a variety of components of the paver. By means of the current, for example, the lighting, the controller, pumps for hydraulic components and in particular electric heaters can be operated. Such heaters are usually provided on all components that come into contact with the Einbaumischgut in order to prevent the cooling and solidification of the Einbbaumischgutes to the components of the paver. In particular, electrical heating elements are provided on the screed since the built-in material has already cooled the furthest at this point of the paver.

Bedingt durch sein Gewicht und die Vielzahl an angetriebenen Komponenten, auch durch das notwendige Betreiben der Heizelemente, ist der Kraftstoffverbrauch eines Straßenfertigers vergleichsweise hoch. Angesichts steigender Energiepreise steigt der Anteil der Energiekosten an den gesamten Betriebskosten eines Straßenfertigers beträchtlich. Bereits eine Senkung des Kraftstoffbedarfs um 10% bis 20% würde pro Jahr mehrere 1.000 Liter Kraftstoff zum Betreiben eines Straßenfertigers einsparen. Dies käme nicht nur der Umwelt zu Gute, sondern würde auch die Betriebskosten eines Straßenfertigers deutlich reduzieren.Due to its weight and the large number of driven components, also by the necessary operation of the heating elements, the fuel consumption of a paver is comparatively high. In the face of rising energy prices, the share of energy costs in the total operating costs of a paver considerably increases. Even reducing fuel consumption by 10% to 20% would save several thousand liters of fuel a year for operating a road paver. This would not only benefit the environment, but would also significantly reduce the operating costs of a road paver.

Aufgabe der vorliegenden Erfindung ist es daher, mit konstruktiv möglichst einfachen Mitteln den Kraftstoffbedarf eines Straßenfertigers zu verringern.Object of the present invention is therefore to reduce the fuel consumption of a paver with structurally simple means possible.

Diese Aufgabe wird erfindungsgemäß gelöst durch eine selbstfahrende Maschine, beispielsweise einen Straßenfertiger, mit den Merkmalen des Anspruchs 1. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.This object is achieved by a self-propelled machine, such as a paver, with the features of claim 1. Advantageous developments of the invention are set forth in the dependent claims.

Erfindungsgemäß ist die Steuerung des Straßenfertigers dazu eingerichtet, automatisch auf den Empfang mindestens eines bestimmten Steuersignals das Anlassen und/oder Abschalten des Motors zu veranlassen. Die Steuerung des Straßenfertigers erhält somit erfindungsgemäß eine Start-Automatik, eine Stopp-Automatik oder sogar eine Start-Stopp-Automatik. Dies ermöglicht es, den Motor beim Eintritt bestimmter Betriebszustände des Straßenfertigers abzuschalten und/oder den Motor beim Eintreten bestimmter anderer Betriebszustände wieder einzuschalten. Durch das Abschalten des Motors während bestimmter Betriebsphasen wird der Gesamt-Kraftstoffbedarf erheblich gesenkt. Durch das automatische Anlassen und/oder Abschalten des Motors ergeben sich gegenüber einem manuellen Anlassen oder Abschalten zwei weitere Vorteile: Zum einen werden die ein Abschalten des Motors gestattenden Betriebsphasen maximal ausgenutzt, um auch den Kraftstoffbedarf maximal zu senken. Zum anderen besteht für den Bediener des Fertigers keine Notwendigkeit, die ein Abschalten des Motors ermöglichenden Betriebszustände ständig zu überwachen. In der Handhabung des Straßenfertigers tritt folglich gegenüber herkömmlichen Straßenfertigern keine Beeinträchtigung auf.According to the invention, the controller of the paver is set up to automatically initiate the starting and / or stopping of the engine upon receipt of at least one specific control signal. The controller of the paver receives thus according to the invention an automatic start, an automatic stop or even a start-stop system. This makes it possible to shut down the engine when certain operating conditions of the paver and / or restart the engine when certain other operating conditions occur. Turning off the engine during certain phases of operation significantly reduces overall fuel requirements. The automatic start and / or shutdown of the engine are compared to a manual start or shutdown two other advantages: Firstly, the engine shutdown a permitting operating phases are used to the maximum, so as to reduce the maximum fuel demand. On the other hand, there is no need for the operator of the finisher to constantly monitor the operating conditions enabling a shutdown of the engine. In the handling of the paver thus occurs compared to conventional pavers no impairment.

Vorzugsweise weist der Straßenfertiger einen Taster zum Erzeugen eines Start-Steuersignales bzw. eines Stopp-Steuersignales auf, um ihn in herkömmlicher Weise bedienen zu können. Zusätzlich weist er mindestens einen Sensor zum Erzeugen eines Steuersignals auf. Dies ermöglicht das automatische Erkennen bestimmter Betriebszustände des Straßenfertigers, und das daraufhin erfolgende, automatische Anlassen und/oder Abschalten des Motors. Der Sensor muss nicht unmittelbar selbst zum Erzeugen eines Steuersignals ausgebildet sein, sondern er kann auch lediglich eine Messgröße an eine Auswerteschaltung oder Auswertelogik übermitteln, die dann ihrerseits das Steuersignal für die Motorsteuerung erzeugt.Preferably, the paver on a button for generating a start control signal or a stop control signal in order to operate it in a conventional manner. In addition, it has at least one sensor for generating a control signal. This allows the automatic recognition of certain operating conditions of the paver and the subsequent automatic start and / or stop of the engine. The sensor does not have to be designed directly for generating a control signal, but it can also transmit only one measured variable to an evaluation circuit or evaluation logic, which in turn generates the control signal for the motor control.

Zweckmäßig ist es, wenn es sich bei dem Sensor um einen Temperatursensor handelt.
Dies bedeutet, dass der Motor je nach Temperatur bestimmter Komponenten des Straßenfertigers angelassen und/oder abgeschaltet werden kann. Interessant ist dies insbesondere für Betriebszustände, in denen die Motorleistung ausschließlich oder fast ausschließlich für das Beheizen bestimmter Komponenten des Straßenfertigers eingesetzt wird. Wenn in solch einem Betriebszustand erkannt wird, dass ein weiteres Heizen nicht erforderlich ist, kann erfindungsgemäß der Motor abgeschaltet werden. Gegenüber einem herkömmlichen Abschalten lediglich der Heizelemente und einem Weiterlaufen des Motors im Leerlauf bietet dies erhebliche Kraftstoffeinsparungen.It is expedient if the sensor is a temperature sensor.
This means that the engine can be started and / or stopped depending on the temperature of certain components of the paver. This is particularly interesting for operating conditions in which the engine power is used exclusively or almost exclusively for the heating of certain components of the paver. If, in such an operating state, it is recognized that further heating is not required, the motor can be switched off according to the invention. Compared to a conventional shutdown only the heating elements and a running of the engine at idle, this provides significant fuel savings.

Insbesondere könnte solch ein Temperatursensor zum Messen der Temperatur einer Einbaubohle des Straßenfertigers eingerichtet sein, beziehungsweise eines Teils der Einbaubohle (z. B. einer Grundbohle, einer Ausziehbohle etc.). Der größte Teil der Heizleistung des Straßenfertigers fällt üblicherweise an der Einbaubohle an. Diese muss jedoch nicht ständig beheizt werden, sondern nur dann, wenn ihre Temperatur unter eine vorgegebene Schwelle gefallen ist. Sobald eine höhere Temperaturschwelle überschritten wurde, wurden in herkömmlichen Straßenfertigern lediglich die Heizelemente wieder abgeschaltet, während der Dieselmotor weiterlief. Die vorliegende Erfindung ermöglicht es nun, dass der Temperatursensor der Einbaubohle (gegebenenfalls über eine geeignete Auswerteschaltung) ein Steuersignal abgibt, aufgrund dessen Empfangs die Steuerung das Abschalten des Motors veranlasst. Erst beim Absinken der Temperatur der Einbaubohle unter eine vorgegebene Schwelle wird der Motor wieder automatisch angelassen, um den Generator anzutreiben und so die elektrische Leistung für den Betrieb der elektrischen Heizelemente zur Verfügung zu stellen.In particular, such a temperature sensor could be adapted to measure the temperature of a screed of the paver, or a part of the screed (eg, a base screed, a pull-out screed, etc.). Most of the heating power of the paver usually accrues to the screed. However, this does not have to be constantly heated, but only if its temperature has fallen below a predetermined threshold. As soon as a higher temperature threshold was exceeded, in conventional road pavers only the heating elements were switched off again, while the diesel engine continued to run. The present invention now makes it possible for the temperature sensor of the screed (possibly via a suitable evaluation circuit) to emit a control signal, on the basis of which reception the control causes the motor to be switched off. Only when the temperature of the screed drops below a predetermined threshold, the engine is automatically restarted to drive the generator and so to provide the electrical power for the operation of the electric heating elements.

In einer Variante der Erfindung ist ein Zeitmessglied zum Erzeugen eines Steuersignals für die Motorsteuerung vorgesehen. Dieses Zeitmessglied ermöglicht es, den Straßenfertiger nach Ablauf vorgegebener Zeitintervalle nach bestimmten Ereignissen automatisch anzulassen und/oder abzuschalten.In a variant of the invention, a timing element for generating a control signal for the engine control is provided. This time measuring element makes it possible to automatically start and / or switch off the paver after expiry of predetermined time intervals after certain events.

In einer äußerst vorteilhaften Variante der Erfindung weist der Straßenfertiger ein Ortungs- und/oder Navigationssystem auf. Dieses Ortungs- und/oder Navigationssystem kann den Betrieb des Straßenfertigers auf vielfältige Weise verbessern. Bei geeigneter Präzision der Ortsmessung kann es gegebenenfalls einen vollautomatischen Betrieb des Straßenfertigers erlauben.In an extremely advantageous variant of the invention, the paver on a positioning and / or navigation system. This positioning and / or navigation system can improve the operation of the paver in a variety of ways. With suitable precision of the location measurement, it may possibly allow a fully automatic operation of the paver.

Vorzugsweise ist das Ortungs- und/oder Navigationssystem infrarotsender-, funk- oder satellitengestützt. Alle diese Varianten erlauben eine präzise, drahtlose Ortung und Navigation des Straßenfertigers.The location and / or navigation system is preferably infrared transmitter, radio or satellite-based. All these variants allow precise, wireless location and navigation of the paver.

Besonders günstig ist es, wenn das Ortungs- und/oder Navigationssystem ausgebildet ist zum Erzeugen eines Steuersignals für die Steuerung. Beim erfindungsgemäßen Straßenfertiger kann das Ortungs- und/oder Navigationssystem auf diese Weise nicht nur die Ortsbestimmung und Orientierung des Straßenfertigers ermöglichen, sondern auch über die Steuerung das Anlassen und/oder Abschalten des Motors veranlassen, wenn bestimmte Betriebszustände oder Umgebungsbedingungen vorliegen.It is particularly favorable if the positioning and / or navigation system is designed to generate a control signal for the controller. In paver according to the invention, the positioning and / or navigation system in this way not only allow the location and orientation of the paver, but also cause the engine to start and / or shutdown of the controller when certain operating conditions or environmental conditions are present.

Beispielsweise könnte das Ortungs- und/oder Navigationssystem verbunden sein mit einer Einrichtung zum Ermitteln einer momentanen Entfernung und/oder eines erwarteten Ankunftszeitpunktes eines anderen Baustellenfahrzeugs. Bei diesem anderen Baustellenfahrzeug kann es sich beispielsweise um einen LKW handeln, der Einbaumischgut zum Beschicken des Straßenfertigers anliefert. Wenn der Straßenfertiger und das andere Baustellenfahrzeug jeweils mit einem geeigneten, kompatiblen Ortungs- und/oder Navigationssystem versehen sind, kann die Steuerung des Straßenfertigers die momentane Position des anderen Baustellenfahrzeuges abfragen und aus der momentanen Entfernung die erwartete Ankunftszeit des sich nähernden Baustellenfahrzeuges berechnen. Wenn die Motorsteuerung ferner über eine Uhr oder ein Zeitmessglied verfügt, kann der Motor des Straßenfertigers zu einem geeigneten Zeitpunkt angelassen werden, so dass die Einbaubohle und die anderen beheizten Komponenten des Straßenfertigers genau beim Eintreffen des anderen Baustellenfahrzeuges die erforderliche Betriebstemperatur erreicht haben. Vor der Aufheizphase, die auf diese Weise so kurz wie möglich gehalten wird, kann der Motor des erfindungsgemäßen Straßenfertigers abgeschaltet bleiben, um auf diese Weise erhebliche Mengen an Kraftstoff einzusparen. Zweckmäßigerweise sollte die Einrichtung zum Ermitteln einer momentanen Entfernung und/oder eines erwarteten Ankunftszeitpunktes eines anderen Baustellenfahrzeuges vor diesem Hintergrund ausgebildet sein zum Erzeugen eines Steuersignals für die Motorsteuerung.For example, the positioning and / or navigation system could be connected to a device for determining a current distance and / or an expected time of arrival of another construction site vehicle. This other construction site vehicle may, for example, be a truck that delivers built-in material for loading the road finisher. If the paver and the other construction site vehicle are each provided with a suitable, compatible positioning and / or navigation system, the controller of the road paver can query the current position of the other construction vehicle and calculate the expected arrival time of the approaching construction vehicle from the current distance. Further, if the engine controller has a clock or timing member, the paver's engine may be started at an appropriate time so that the screed and other heated components of the paver have reached the required operating temperature as the other jobsite vehicle arrives. Before the heating phase, which is kept as short as possible in this way, the engine of the paver according to the invention can remain switched off, in order to save considerable amounts of fuel in this way. Expediently, the device should be designed to determine a current distance and / or an expected time of arrival of another construction site vehicle against this background in order to generate a control signal for the engine control.

Vorzugsweise ist im erfindungsgemäßen Straßenfertiger eine Startvorrichtung zum Anlassen des Motors in Reaktion auf den Empfang eines entsprechenden Steuersignals vorgesehen, z.B. ein Anlasser, eine Motor-Generator-Einheit (dadurch Einsparung von Anlasser und Lichtmaschine), ein hydraulischer Starter mittels Druckspeicher oder Ähnliches. Durch Abgabe des Steuersignals an die Startvorrichtung kann die Motorsteuerung den Motor auf diese Weise automatisch anlassen.Preferably, in the paver according to the invention, there is provided a starting device for starting the engine in response to receipt of a corresponding control signal, e.g. a starter, a motor-generator unit (thereby saving the starter and alternator), a hydraulic starter by means of pressure accumulator or the like. By delivering the control signal to the starting device, the engine controller can automatically start the engine in this way.

Günstig ist es dabei, wenn außerdem eine Batterie vorgesehen ist, um die Startvorrichtung auch bei ausgeschaltetem Motor mit Energie versorgen zu können.It is advantageous if, in addition, a battery is provided in order to provide the starting device with energy even when the engine is off.

Im Folgenden wird ein vorteilhaftes Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher dargestellt.

Figur 1
zeigt eine Seitenansicht eines erfindungsgemäßen Straßenfertigers 1 als Beispiel einer selbstfahrenden Maschine gemäß der Erfindung.
In the following, an advantageous embodiment of the invention is illustrated in more detail with reference to a drawing.
FIG. 1
shows a side view of a road finisher 1 according to the invention as an example of a self-propelled machine according to the invention.

Der Straßenfertiger 1 verfügt über ein Chassis 2, auf dem der Bedienstand 3 des Straßenfertigers 1 angeordnet ist. Der Straßenfertiger 1 ist mittels eines Fahrwerks 4 verfahrbar, bei dem es sich im vorliegenden Fall um ein Radfahrwerk 4 mit Rädern 5 handelt. Angetrieben wird das Fahrwerk 4 mittels eines Dieselmotors 6, der auf dem Chassis 2 gelagert ist und mit einem Generator (nicht dargestellt) zum Erzeugen elektrischer Spannung verbunden ist.The road paver 1 has a chassis 2, on which the control station 3 of the road paver 1 is arranged. The road paver 1 can be moved by means of a chassis 4, which in the present case is a wheeled chassis 4 with wheels 5. The chassis 4 is driven by means of a diesel engine 6, which is mounted on the chassis 2 and connected to a generator (not shown) for generating electrical voltage.

Der Straßenfertiger 1 verfügt ferner über einen Gutbunker 7 zur Aufnahme von Einbaumischgut, über eine Transportvorrichtung (nicht dargestellt), zum Transportieren des Einbaumischgutes aus dem Gutbunker 7 unter dem Bedienstand 3 hindurch zum hinteren Bereich des Straßenfertigers, sowie über eine Querverteilvorrichtung 8, beispielsweise eine Verteilerschnecke zum Verteilen des Einbaumischgutes senkrecht zur Fahrtrichtung des Straßenfertigers 1 über die gesamte Einbaubreite. An einem hydraulisch nach oben und unten verschwenkbaren Holm 9 ist eine Einbaubohle 10 am Straßenfertiger 1 gelagert. Sie dient zum Komprimieren und Glätten des ausgebrachten Einbaumischguts.The road paver 1 further has a Gutbunker 7 for receiving Einbbaumischgut, via a transport device (not shown), for transporting the Einbaumischgutes from the Gutbunker 7 under the control station 3 through to the rear of the paver, and via a transverse distribution device 8, such as a distribution screw for distributing the Einbaumischgutes perpendicular to the direction of the paver 1 over the entire installation width. On a hydraulically upwards and below pivotable spar 9 a screed 10 is mounted on the paver 1. It is used for compressing and smoothing the applied installation material.

Der Straßenfertiger 1 verfügt ferner über wenigstens eine Pumpen-, Hydromotoren- oder hydrostatische Antriebseinheit (nicht dargestellt) für Funktions- und Arbeitskomponenten der Maschine, und über wenigstens einen ein Hydraulikmedium-Reservoir umfassenden Hydraulikkreis.The road paver 1 further has at least one pump, hydraulic motor or hydrostatic drive unit (not shown) for functional and working components of the machine, and at least one hydraulic circuit comprising a hydraulic medium reservoir.

Der Straßenfertiger 1 weist ferner eine Steuerung 11 auf, die dazu eingerichtet ist, automatisch auf den Empfang mindestens eines Steuersignals hin das Anlassen und/oder Abschalten des Motors 6 zu veranlassen. Zum Anlassen des Motors 6 ist eine Startvorrichtung 12 vorgesehen, z.B. ein Anlasser, der über einen Energiespeicher, z.B. eine Batterie 13, unabhängig vom Betriebszustand des Dieselmotors 6 und des Generators (nicht dargestellt) mit elektrischer Leistung versorgt wird. Der Energiespeicher, z.B. die Batterie 13, kann beim Betrieb des Generators aufgeladen werden.The paver 1 further comprises a controller 11 which is adapted to automatically cause the start and / or shutdown of the motor 6 upon receipt of at least one control signal. For starting the engine 6, a starting device 12 is provided, e.g. a starter powered by an energy store, e.g. a battery 13, regardless of the operating condition of the diesel engine 6 and the generator (not shown) is supplied with electrical power. The energy storage, e.g. the battery 13, can be charged during operation of the generator.

Alternativ könnte die Startvorrichtung 12 eine Motor-Generator-Einheit oder ein hydraulischer Starter mit Druckspeicher als Energiespeicher sein.Alternatively, the starting device 12 may be a motor-generator unit or a hydraulic starter with pressure accumulator as energy storage.

Drahtlos oder drahtgebunden steht die Steuerung 11 in Verbindung mit einem Temperatursensor 14 an der Einbaubohle 10. Der Temperatursensor 14 misst die Temperatur der Einbaubohle 10. Er kann ein Steuersignal an die Steuerung 11 übermitteln, wenn die Temperatur der Einbaubohle vorgegebene Temperaturschwellen über- oder unterschreitet.Wireless or wired, the controller 11 is in communication with a temperature sensor 14 on the screed 10. The temperature sensor 14 measures the temperature of the screed 10. He can transmit a control signal to the controller 11 when the temperature of the screed exceeds predetermined temperature thresholds or below.

Außerdem ist die Motorsteuerung 11 mit einem Ortungs- und Navigationssystem 15 verbunden. Dieses Ortungs- und Navigationssystem 15 ist satellitengestützt (beispielsweise über GPS) und dient zum Erkennen der momentanen Position des Straßenfertigers 1. Im vorliegenden Fall ist es gleichzeitig ausgebildet zum Kommunizieren mit einem kompatiblen Ortungs- und Navigationssystem eines anderen Baustellenfahrzeugs, beispielsweise eines LKWs zum Anliefern von Einbaumischgut. Das Ortungs- und Navigationssystem 15 des Straßenfertigers 1 kann die aktuelle Position und Entfernung des anderen Baustellenfahrzeugs ermitteln und durch geeignete Prozesse die erwartete Ankunftszeit des anderen Baustellenfahrzeugs am Straßenfertiger 1 berechnen. Diese Berechnung der erwarteten Ankunftszeit kann auch in der Steuerung 11 vorgenommen werden.In addition, the engine controller 11 is connected to a positioning and navigation system 15. This positioning and navigation system 15 is satellite-based (for example, via GPS) and serves to detect the current position of the road finisher 1. In the present case, it is simultaneously designed to communicate with a compatible positioning and navigation system of another construction vehicle, such as a truck for delivering Einbaumischgut. The positioning and navigation system 15 of the paver 1 can determine the current position and distance of the other construction site vehicle and calculate the expected arrival time of the other construction site vehicle on the paver 1 by suitable processes. This calculation of the expected arrival time can also be made in the controller 11.

Der Betrieb des erfindungsgemäßen Straßenfertigers 1 kann wie folgt ablaufen.The operation of the road paver 1 according to the invention can proceed as follows.

In einem Bereitschaftsmodus steht der Straßenfertiger 1 an einer Stelle und wartet auf Einbaumischgut und/oder auf ein Signal zum Beginn der Einbaufahrt. Um möglichst bald mit dem Einbau beginnen zu können, werden alle beheizten Teile, insbesondere die Einbaubohle 10, auf Einbautemperatur gehalten, indem die dafür vorgesehenen Heizelemente betrieben werden. Sobald der Temperatursensor 14 an der Einbaubohle 10 (oder ein weiterer Temperatursensor an anderen beheizten Komponenten des Straßenfertigers 1) erkennt, dass eine vorgegebene Temperaturschwelle überschritten ist, die ein weiteres Beheizen überflüssig macht, meldet der Sensor 14 dies durch ein entsprechendes Steuersignal an die Motorsteuerung 11. Die Motorsteuerung 11 sorgt daraufhin für ein Abschalten des Dieselmotors 6, da dessen Leistung nun weder als Antriebsleistung zum Fahren, noch für den Betrieb der Heizelemente erforderlich ist.In a standby mode, the road paver 1 is in one place and waits for built-in material and / or for a signal to start the installation run. In order to begin as soon as possible with the installation, all heated parts, in particular the screed 10, kept at installation temperature by the heating elements provided for this purpose are operated. As soon as the temperature sensor 14 on the screed 10 (or another temperature sensor on other heated components of the paver 1) recognizes that a predetermined temperature threshold has been exceeded which makes further heating superfluous, the sensor 14 reports this to the engine controller 11 by means of a corresponding control signal The engine controller 11 then switches off the diesel engine 6, since its power is now required neither as drive power for driving nor for the operation of the heating elements.

Die Temperatur der Einbaubohle 10 wird daraufhin langsam absinken. Wenn der Temperatursensor 14 erkennt, dass die Temperatur unter eine vorgegebene Schwelle gefallen ist, meldet er dies durch ein anderes Steuersignal an die Motorsteuerung 11. Die Motorsteuerung 11 veranlasst daraufhin das automatische Anlassen des Motors 6 mittels der Startvorrichtung 12, z.B. des Anlassers, damit der Motor 6 den Generator betreiben und so die elektrische Leistung für die Heizelemente zur Verfügung stellen kann. Das automatische Abschalten und Anlassen des Motors 6 während der Abkühlphasen der Einbaubohle 10 spart erhebliche Mengen an Kraftstoff ein.The temperature of the screed 10 will then slowly drop. When the temperature sensor 14 detects that the temperature has fallen below a predetermined threshold, it notifies this to the engine controller 11 by another control signal. The engine controller 11 then initiates automatic starting of the engine 6 by means of the starter 12, e.g. of the starter so that the motor 6 can operate the generator and thus provide the electrical power for the heating elements. The automatic shutdown and starting of the engine 6 during the cooling phases of the screed 10 saves considerable amounts of fuel.

In einer anderen Situation wartet der Straßenfertiger 1 auf das Eintreffen eines LKWs mit Einbaumischgut. Während dieses Zustandes bleibt der Dieselmotor 6 abgeschaltet, um keinen Kraftstoff zu verbrauchen. Andererseits soll jedoch die Einbaufahrt möglichst unmittelbar im Anschluss an die Anlieferung des Einbaumischguts beginnen.In another situation, the paver 1 waits for the arrival of a truck with Einbaumischgut. During this condition, the diesel engine 6 remains switched off to consume no fuel. On the other hand, however, the installation drive should begin as directly as possible following the delivery of the installation batches.

Mittels des Ortungs- und Navigationssystems 15 kann der Straßenfertiger 1 die momentane Position des sich nähernden LKWs bestimmen, um daraus die erwartete Ankunftszeit des Einbaumischguts zu ermitteln. In der Steuerung 11 sind Informationen darüber hinterlegt, welche Zeitspanne zum Aufheizen der Einbaubohle 10 auf Betriebstemperatur notwendig ist. Dies ermöglicht es der Steuerung 11, den Dieselmotor 6 zu einem geeigneten Zeitpunkt einzuschalten, so dass genau beim Eintreffen des LKWs die erforderliche Betriebstemperatur erreicht wird. Auf diese Weise werden unnötig lange Aufheizphasen vermieden, während gleichzeitig unmittelbar nach Erhalt des Einbaumischguts die Einbaufahrt aufgenommen werden kann.By means of the positioning and navigation system 15, the road paver 1 can determine the current position of the approaching truck in order to determine the expected arrival time of the built-in cargo therefrom. In the controller 11 information is stored on what period of time for heating the screed 10 to the operating temperature is necessary. This allows the controller 11 to turn on the diesel engine 6 at an appropriate time so that the required operating temperature is reached when the truck arrives. In this way, unnecessarily long heating phases are avoided while at the same time the Einbauffahrt can be added immediately after receipt of the built-in goods.

Ausgehend von dem dargestellten Ausführungsbeispiel kann der erfindungsgemäße Straßenfertiger 1 auf vielfache Weise abgewandelt werden. Beispielsweise können weitere Sensoren zum Überwachen bestimmter Betriebszustände verschiedener Komponenten des Straßenfertigers 1 vorgesehen sein, die ein Anlassen und/oder Abschalten des Motors 6 geeignet erscheinen lassen.Starting from the illustrated embodiment, the road paver 1 according to the invention can be modified in many ways. For example, further sensors for monitoring certain operating conditions of various components of the road paver 1 may be provided, which make a startup and / or shutdown of the engine 6 appear suitable.

Claims (12)

  1. A self-propelling machine (1) for processing bituminous or concrete pavement material, in particular a road finisher or a feeder, comprising
    - an internal combustion engine (6) as a primary drive source,
    - a controller (11) for the engine (6), said controller (11) receiving control signals,
    - at least one pump drive unit, hydraulic-motor drive unit or hydrostatic drive unit for functional and operational components of the machine, and
    - at least one hydraulic circuit comprising a hydraulic medium reservoir,
    characterized in that
    the controller (11) is configured for automatically causing starting and/or stopping of the engine (6) in response to receipt of at least one specific control signal,
    and that at least one sensor (14) is provided for generating a control signal for the starting and/or stopping of the motor (6).
  2. A machine according to claim 1, characterized in that the sensor (14) is a temperature sensor.
  3. A machine according to claim 2, characterized in that the temperature sensor (14) is configured for measuring the temperature of a screed (10) of the road finisher (1).
  4. A machine according to one of the preceding claims, characterized in that a timer for generating a control signal is provided.
  5. A machine according to one of the preceding claims, characterized in that the road finisher (1) comprises a localization and/or navigation system (15).
  6. A machine according to claim 5, characterized in that the localization and/or navigation system (15) is infrared-transmitter-, radio- or satellite-based.
  7. A machine according to one of the claims 5 or 6, characterized in that the localization and/or navigation system (15) is configured for generating a control signal for the controller (11).
  8. A machine according to one of the claims 5 to 7, characterized in that, in combination with the localization and/or navigation system (15), means are provided for ascertaining the current distance to and/or an expected time of arrival of some other road works vehicle.
  9. A machine according to claim 8, characterized in that said means are configured for generating a control signal for the controller (11).
  10. A machine according to one of the preceding claims, characterized in that a starting device (12) is provided for starting the engine (6) in response to receipt of a respective control signal.
  11. A machine according to claim 10, characterized in that an energy store is provided for supplying the starting device (12) with energy also in the deactivated condition of the engine (6).
  12. A machine according to claim 11, characterized in that a battery (13) is provided as an energy store.
EP09008415.3A 2009-06-26 2009-06-26 Road finisher with automatic motor control Active EP2281947B2 (en)

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PL09008415.3T PL2281947T5 (en) 2009-06-26 2009-06-26 Road finisher with automatic motor control
EP09008415.3A EP2281947B2 (en) 2009-06-26 2009-06-26 Road finisher with automatic motor control
CN201020234322XU CN201972075U (en) 2009-06-26 2010-06-23 Self-driving processing machine for asphalt or concrete paving material
US12/821,970 US8517628B2 (en) 2009-06-26 2010-06-23 Road finisher with automatic engine controller
CN2010102071268A CN101929123B (en) 2009-06-26 2010-06-23 Road finisher with automatic motor control
US13/919,074 US20130287495A1 (en) 2009-06-26 2013-06-17 Road finisher with automatic engine controller

Applications Claiming Priority (1)

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EP2281947B1 true EP2281947B1 (en) 2014-04-30
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Also Published As

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US20130287495A1 (en) 2013-10-31
EP2281947A1 (en) 2011-02-09
US20100329783A1 (en) 2010-12-30
PL2281947T5 (en) 2023-03-06
PL2281947T3 (en) 2014-09-30
CN101929123A (en) 2010-12-29
US8517628B2 (en) 2013-08-27
CN101929123B (en) 2012-09-12
CN201972075U (en) 2011-09-14
EP2281947B2 (en) 2022-04-13

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