AT501535B1 - METHOD FOR PERFORMING TEST-STATIONED, DRIVING-CYCLES-RELIABLE VEHICLE TESTS - Google Patents
METHOD FOR PERFORMING TEST-STATIONED, DRIVING-CYCLES-RELIABLE VEHICLE TESTS Download PDFInfo
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- AT501535B1 AT501535B1 AT8622006A AT8622006A AT501535B1 AT 501535 B1 AT501535 B1 AT 501535B1 AT 8622006 A AT8622006 A AT 8622006A AT 8622006 A AT8622006 A AT 8622006A AT 501535 B1 AT501535 B1 AT 501535B1
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Description
2 AT 501 535 B12 AT 501 535 B1
Die Erfindung betrifft ein Verfahren zur Durchführung von prüfstandsgebundenen, fahrzyklustreuen Fahrzeugtests, wobei das Fahrzeug innerhalb einer zulässigen Geschwindigkeits-und/oder Drehzahlbandbreite eines Fahrzyklus betrieben wird. Für das Fahren von gesetzlich vorgeschriebenen Verbrauchs- und Emissionszyklen werden üblicherweise ein Prüfstandsfahrer oder Prüfstandsroboter eingesetzt, welche vorgegebenen Fahrzyklen innerhalb eines vorbestimmten Toleranzbandes folgen.The invention relates to a method for carrying out test stand-bound, vehicle cycle-consistent vehicle tests, wherein the vehicle is operated within a permissible speed and / or speed bandwidth of a drive cycle. For driving legally prescribed consumption and emission cycles, a test stand driver or bench-top robot is usually used, which follow predetermined driving cycles within a predetermined tolerance band.
Die gemessenen Verbrauchs- und Emissionswerte werden in erheblichem Maße beeinflusst vom transienten Verhalten der Brennkraftmaschine, insbesondere bei Lastwechsel mit relativ steilen Gradienten. Dies führt dazu, dass einerseits verschiedene zulässige Messungen innerhalb des Toleranzbandes zum Teil stark voneinander abweichen und andererseits das Messergebnis selbst bei 100%igem Folgen des vorgegebenen Geschwindigkeits- und Drehzahlverlaufs nur suboptimal ist.The measured consumption and emission values are to a considerable extent influenced by the transient behavior of the internal combustion engine, in particular during load changes with relatively steep gradients. As a result, on the one hand, different permissible measurements within the tolerance band deviate greatly from each other and, on the other hand, the measurement result is only sub-optimal even with 100% follow-up of the given speed and speed characteristics.
Aufgabe der Erfindung ist es, diese Nachteile zu vermeiden und Verbrauchs- und Emissionswerte während der Fahrzyklen zu verbessern.The object of the invention is to avoid these disadvantages and to improve consumption and emission values during the driving cycles.
Erfindungsgemäß wird dies dadurch erreicht, dass innerhalb des Toleranzbandes der Verbrauchs- und/oder emissionsoptimale Geschwindigkeits- und/oder Drehzahlbereich ermittelt wird und das Fahrzeug in diesem optimalen Geschwindigkeits- und/oder Drehzahlbereich betrieben wird. Die Gradienten bei Lastwechsel werden dabei wesentlich reduziert. Das Fahrzeug kann dabei von einem Prüfstandsfahrer oder einem Fahrroboter betrieben werden.According to the invention this is achieved in that within the tolerance band of the consumption and / or emission-optimal speed and / or speed range is determined and the vehicle is operated in this optimal speed and / or speed range. The gradients during load changes are significantly reduced. The vehicle can be operated by a test stand driver or a driving robot.
Besonders vorteilhaft ist es, wenn dem Fahrer optisch, akustisch und/oder taktil eine Abweichung der Ist-Geschwindigkeit und/oder der Ist-Drehzahl vom optimalen Geschwindigkeits-und/oder Drehzahlbereich angezeigt wird. Dabei kann beispielsweise auf einem Anzeigegerät die Ideallinie für die Geschwindigkeit und/oder die Drehzahl, sowie der Ist-Wert der Geschwindigkeit und/oder der Drehzahl angezeigt werden, so dass der Prüfstandsfahrer leicht den Verbrauchs- oder emissionsoptimalen Betriebsbereich innerhalb des Toleranzbandes des Fahrzyklus fahren kann.It is particularly advantageous if the driver is visually, acoustically and / or tactually displayed a deviation of the actual speed and / or the actual speed from the optimum speed and / or speed range. In this case, for example, the ideal line for the speed and / or the speed, and the actual value of the speed and / or the speed can be displayed on a display device, so that the test stand driver can easily drive the consumption or emission-optimal operating range within the tolerance band of the drive cycle ,
Die Erfindung wird anhand der Figuren näher erläutert.The invention will be explained in more detail with reference to FIGS.
Es zeigen Fig. 1 ein Geschwindigkeits-Zeit-Diagramm eines Fahrzyklus und Fig. 2 eine optische Anzeige für die Optimallinie.1 shows a speed-time diagram of a drive cycle and FIG. 2 shows an optical display for the optimum line.
In Fig. 1 ist die Geschwindigkeit v über der Zeit t eines typischen Fahrzyklus zur Erhebung des Verbrauches und der Emissionen eines Fahrzeuges schematisch dargestellt. Der Prüfstandsfahrer hat die Aufgabe, dem Fahrzyklus 1 innerhalb eines mit Bezugszeichen 2 angedeuteten Toleranzbandes zu folgen. Innerhalb dieses Toleranzbandes 2 gibt es allerdings eine Betriebslinie 3, bei der der Verbrauch und/oder die Emissionen minimal werden. Je nach dem, wie weit das Fahrzeug von dieser Optimallinie 3 entfernt betrieben wird, ergeben sich geringere oder höhere Verbrauchs- und/oder Emissionswerte. Wenn der Prüfstandsfahrer oder der Fahrroboter das Fahrzeug möglichst nahe an der Optimallinie 3 betreibt, können die besten Verbrauchs-und/oder Emissionswerte erzielt werden.In Fig. 1, the speed v over the time t of a typical driving cycle for collecting the consumption and the emissions of a vehicle is shown schematically. The test stand driver has the task of following the driving cycle 1 within a tolerance band indicated by reference numeral 2. Within this tolerance band 2, however, there is an operating line 3, in which the consumption and / or emissions are minimal. Depending on how far the vehicle is operated away from this optimum line 3, lower or higher fuel consumption and / or emission values result. If the test stand driver or the driving robot operates the vehicle as close as possible to the optimum line 3, the best fuel consumption and / or emission values can be achieved.
Um die Wiederholbarkeit des gefahrenen Fahrzyklus zu verbessern und dem Prüfstandsfahrer das Folgen der Optimallinie 3 zu erleichtern, ist ein in Fig. 2 dargestelltes Anzeigegerät 4 vorgesehen, welches einen Ausschnitt aus dem Fahrzyklus 1, samt Toleranzband 2 und der Optimallinie 3 anzeigt. Weiters ist der momentane Betriebspunkt 4 eingeblendet, so dass der Prüfstandsfahrer sofort erkennen kann, ob eine Beschleunigung oder Verzögerung des Fahrzeuges erforderlich ist.In order to improve the repeatability of the driven driving cycle and to facilitate the test stand driver to follow the optimal line 3, a display device 4 shown in Fig. 2 is provided which displays a section of the driving cycle 1, including tolerance band 2 and the optimal line 3. Furthermore, the current operating point 4 is displayed, so that the test stand driver can immediately recognize whether an acceleration or deceleration of the vehicle is required.
Claims (5)
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT8622006A AT501535B1 (en) | 2006-05-18 | 2006-05-18 | METHOD FOR PERFORMING TEST-STATIONED, DRIVING-CYCLES-RELIABLE VEHICLE TESTS |
| PCT/AT2006/000533 WO2007079511A2 (en) | 2006-01-10 | 2006-12-21 | Method for determining a speed signal of an electric machine |
| EP06827961A EP1971766A2 (en) | 2006-01-10 | 2006-12-21 | Method for determining a speed signal of an electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AT8622006A AT501535B1 (en) | 2006-05-18 | 2006-05-18 | METHOD FOR PERFORMING TEST-STATIONED, DRIVING-CYCLES-RELIABLE VEHICLE TESTS |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| AT501535A2 AT501535A2 (en) | 2006-09-15 |
| AT501535A3 AT501535A3 (en) | 2007-05-15 |
| AT501535B1 true AT501535B1 (en) | 2007-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AT8622006A AT501535B1 (en) | 2006-01-10 | 2006-05-18 | METHOD FOR PERFORMING TEST-STATIONED, DRIVING-CYCLES-RELIABLE VEHICLE TESTS |
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| Country | Link |
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| AT (1) | AT501535B1 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10338350A1 (en) * | 2003-08-21 | 2005-03-24 | Beyer, Helmut | Power and torque meters for vehicle engines, display instantaneous engine power and torque as functions of engine speed and loading |
| DE102004041174A1 (en) * | 2003-08-26 | 2005-03-24 | Steinkrug Gmbh & Co. Kg | Test stand for automatic checking of pedal operated changes of vehicle parameters, especially for checking vehicles coming off a production line, has intelligent chargers for charging stand alone pedal displacement setting devices |
-
2006
- 2006-05-18 AT AT8622006A patent/AT501535B1/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10338350A1 (en) * | 2003-08-21 | 2005-03-24 | Beyer, Helmut | Power and torque meters for vehicle engines, display instantaneous engine power and torque as functions of engine speed and loading |
| DE102004041174A1 (en) * | 2003-08-26 | 2005-03-24 | Steinkrug Gmbh & Co. Kg | Test stand for automatic checking of pedal operated changes of vehicle parameters, especially for checking vehicles coming off a production line, has intelligent chargers for charging stand alone pedal displacement setting devices |
Also Published As
| Publication number | Publication date |
|---|---|
| AT501535A3 (en) | 2007-05-15 |
| AT501535A2 (en) | 2006-09-15 |
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