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Chassis Dynamometer for cars

AUTOSCAN_UKP_08_05

AutoScan Fi

Modular and expandable conceptCompatible with all vehicle typesLow Inertia technologyModern and user friendly software interfaceSecure and safe for both vehicles and users

2 & 4 wheel drive versions Iso Speed SystemOptimised tire/wheel contactDriving under dynamic load controlled by user defi ned road laws

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USE OF A TEST BEDThe technology used in cars is evolving as much as their performance, and it is becoming increasingly diffi cult to run an engine in a workshop in the same way as it runs on the road or track. The cause is an increasing complexity of engine management and the proliferation of electronic systems of vehicle control which exclude any possibility of use outside of normal road conditions. Under these restrictions, engine optimisation, the teaching demonstration vehicle operation or even the reproduction of faults becomes impossible. The need to exactly recreate the driving conditions makes it essential to use a specialised, modern, precise and reliable measuring instrument. Rotronics offers its solution : Autoscan Fi. Its new design makes it possible to offer the best of available technology to all users, not just large companies, or experts. An Autoscan Fi is versatile and time-saving, will increase your professional credibility, is a motivational teaching support and will build confi dence with your customers : Autoscan Fi will boost your activity!

ROTRONICS KNOW-HOWFor nearly 15 years Rotronics has designed and manufactured engine test beds and roller test beds for professionals, motorsports and technical teaching. Since its creation, the company has always used technical innovation to satisfy the requirements of its customers, and today offers powerful and new solutions in many fi elds.Rotronics has built all its experience into the new AutoScan Fi test bed, which is why it is different and effective.

SKILLED TECHNICAL SUPPORTExperience technicians are ready to listen to any question about the test bench operation, and offer advice and After Sale Service. The people you will talk to took part in the design and the production of AutoScan, and they will always be able to answer your questions.

Rotronics offers its solution : Autoscan Fi. Its new design makes it possible to offer the best of available

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AUTOSCAN 4X - FI250 & FI500

Autoscan 4X is a roller test bench for 2 and 4 wheel drive cars. It benefi ts from ‘Fi Technology’ (low inertia) : hollow rollers and reduction of the rotating parts, which allows a reduction in the total inertia moment whilst remaining physically compact.This technology, associated with high speed electronic management, ensures a very accurate and extremely reactive control of the load applied to the vehicle : the instructions changes in stabilised mode are clear and precise, but it is in transient mode (acceleration) that the AutoScan Fi capacities appear : thanks to the Fi technology, the load applied is controlled by a user defi ned road law without shift or time lag, which ensures absolutely exact reproduction of real conditions.Autoscan 4X is equipped with one Eddy current brake for the Fi250 version and two for the Fi500 version.

ISO-SPEED SYSTEMA mechanical link system, built around a belt system, links the rollers together. That way, all the wheels of the car under test are geared at the same speed and so whatever the transmission technology : 2 or 4 wheel drive, viscous coupling, drived differential (Aldex type for example), electronic systems for driver aid (ESP etc)…the vehicle runs on the test bench as it does on the road in normal conditions. It doesn’t launch any security systems or damaged running modes which give incorrect measurements or which make measurement impossible in the worst cases !

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AUTOSCAN 2X - Fi250 & Fi500

Autoscan 2X is the two roller version of the 4X model. This version offers the same technology and the same effi ciency as the Autoscan 4X and is most suited to testing two wheel drive cars for racing, with no driver assistance systems acting on the engine management.Autoscan 2X uses ‘Fi Technology’. It is equipped with one air cooled Eddy current brake for the Fi250 version, and two of the same Eddy current brakes for the Fi500 version.

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EASY AND REPRESENTATIVE TESTSTests procedures for every requirement.

To manually optimise mapping points, to measure vehicle performances in real conditions, and to draw the characteristic value curves (power, torque, temperatures, air/fuel ratio…) or to do a rolling test, Autoscan Fi offers you easy to use procedures which are all adaptable to your technical requirements.

Why test an engine in transient mode ?

On the road or on the track, an engine runs in transient mode almost constantly. It is essential to reproduce this behaviour to work with representative engine behaviour. That is why Autoscan Fi offers test procedures under controlled load acceleration defi ned by a ‘road law’.

Why apply a load under a road law ?

A dynamic road vehicle exerts forces on its environment to move forward, but it also undergoes resistances. The principal ones are : the total weight of the vehicle involved, the resistance which the ground applies to the wheels, the aerodynamic drag generated by the speed and fi nally the gradient of the road. In short, a heavy and bulky vehicle will have more diffi culty moving on rough ground and up a hill than a light and aerodynamic vehicle moving on smooth and fl at ground. To make it more complicated, these resistances are not constant : they change according to the speed of the vehicle and also they change in a non-linear way. Autoscan Fi uses a road law to control the load brake and thus to create resistance. This mathematical law takes into account the various settings and their changes according to the speed of the vehicle. Thus, the engine tested undergoes the same resistance as in the real world.

AIR/FUEL RATIO MEASUREMENTTo obtain perfect combustion was always a top priority in engine optimisation. One of the most reliable means to control the effectiveness is to measure the air/fuel ratio with a wide band Lambda sensor. This type of sensor, connected to the Rotronics signal conditioning module, delivers exact information. The user sees a real value of the air/fuel ratio, without ambiguity nor approximation. The quickly reacting system makes it possible to ensure the measurement of transient stages and thus to superimpose the richness curve on the torque curve.

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ACCURATE AND REPEATABLE TESTSAutoscan Fi uses precise sensors : 360 measurement points to each turn of the rollers for the speed sensors and 0.02% error for the load sensor which measures the braking torque. Connected to a data acquisition and totally digital control of the brakes, the unit constitutes an extremely precise and stable measuring equipment : less than 0.1% of error overall! This technology ensures optimal measurement quality whatever the speed of the vehicle and the precision of the results is independent of the level of measured power.

TYRE/ROLLER LINKThe quality of the tyre/roller link influences partly the precision and the repeatability of measurements. The stability of the vehicle depends almost entirely on the correct operation of the tyre. Rotronics paid particular attention to these questions in the design of AutoScan Fi : knurled rollers with strong casing for a better adherence and mono-rollers at the wheel in order to preserve the most natural tyre deformation.

A UNIVERSAL TEST BENCHThe rollers of AutoScan Fi are at the same level as the ground and give only one point of support for the tyre. Thus it is possible to install vehicles with low ground clearance while preserving their original attitude. This characteristic makes AutoScan Fi a particularly universal bench.

OPTIMAL COOLINGThe cooling of the vehicle under test is of primary importance for the integrity of the components. Powerful ventilators provide this function and take part in the thermal stabilisation of the car. They are ducted in order to perfectly diffuse the flow of air where it is necessary to evacuate the heat.

AN EASILY EXPANDABLE DESIGNAutoScan Fi consists of modules that were always envisaged to be adaptable after initial installation. It is completely possible to add a load brake to a Fi250 model or to transform a 2X model into a 4X version. The basic choice of the AutoScan Fi characteristics are not fixed at any point – the machine can be easily upgraded.

SECURITYThe safety of vehicles and people should not be compromised : the revolving elements are inaccessible, automated procedures prevent the use of the bench as long as all the safety conditions are not satisfied and emergency braking is almost immediate thanks to low inertia Fi technology. However, these systems are not an obstacle to effectiveness : with fast and easy implementation, they adapt automatically to the vehicle.

Traditional test bench: AutoScan Fi test bench :

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COMPLETE AND EASY SOFTWARE MANAGEMENT

It is not necessary to be a data-processing specialist to control AutoScan Fi. A few clicks are enough to use the software. User-friendly and simple design does mean less effi cient. Presentation of the data in real time, results comparisons, report editing, permanent storage … the AutoScan software is complete.

The setting of the tests is made through simple dialogue boxes and a few seconds are enough to prepare a procedure. During the test, the curves are drawn on the screen in real time, allowing the user the possibility of stopping the procedure if there is an anomaly or for improving the parameters of the tested vehicle.

Once the measurements are made, the results can be shown in the form of curves, tables or statistics. Various recent or old tests can be superimposed and easily compared. The data can be saved easily or fed into an invaluable customer data base.

The basic results and comments constitute the test reports. They can be saved, printed or be exported to other external systems. The AutoScan software, used in demonstration mode (free of charge and without time limit) makes it possible to read results obtained with the bench. A simple fi le transfer is enough to do this.

The software offers simulation results, from theoretical calculations, but based on measured data. These results make it possible to appreciate the improvements obtained in real conditions or contribute to the explanation of particularly abstract concepts.

A database gathers the identity of each customer, the associated vehicle model and the design features useful for the test schedule. The role of the database is to fi le the data along with all measurements and the comments which are associated to them. It is thus possible to control the evolution of a vehicle in time, to compare results of different vehicles or to compare the performance of the same model of vehicle used by different customers.

The setting of the tests is made through simple dialogue

Once the measurements are made, the results can be shown in the Once the measurements are made, the results can be shown in the

The basic results and comments constitute the test reports. They

The software offers simulation results, from theoretical

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The basic results and comments constitute the test reports. They can be saved, printed or be exported to other external systems. The AutoScan software, used in demonstration mode (free of charge and without time limit) makes it possible to read results obtained with the bench. A simple fi le transfer is enough to do this.

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INNOVATION IN PROFESSIONAL SERVICE

AutoScan Fi also offers an OBD interface : the direct communication between the bench and the car is from now a reality. Connection is done by the connection of an interface on the diagnosis plug of the vehicle. The AutoScan software is able to collect invaluable data without the user needing to instrument the engine : engine speed, fl ow, pressure and temperature of the air intake, engine temperature etc.The OBD interface avoids long and expensive instrumentation (assuming the instrumentation is not impossible!) : a simple connection ensures the access to strategic and precise data. In certain cases, the OBD interface can be used to validate the answer of the sensors concerned, such as the fl owmeter of air of admission for example.

Portable wireless computer system :All the controls of the bench, as well as the visualisation and analysis, can be carried out using a tablet type laptop. The communication with the bench is ensured by a WiFi wireless connection. The operator of the bench is completely free to move around and can view all the controls, procedures and data on the screen.

The calibration procedures are very easy and fast, thanks to a specifi c procedure in the software. It is very easy to preserve a precisely measuring instrument that gives repeatable results. The operation does not take more than 10 minutes.

AutoScan Fi is equipped with an environment monitor SML which measures the characteristics of the surropunding air : pressure, humidity and temperature. It transmits them in real time to the software which corrects the results. The Environment monitor SME offers in addition a system of data acquisition : four thermocouple inputs for the measurement of temperatures and four other analogue inputs for any other type of acquisition, such as measurement of pressure for example.

All the operations necessary for the test schedule are done by the user from the driver’s position in the vehicle. A wired remote control provides this function. The radio remote control is available, and allows a greater freedom of movement and a certain comfort of use.

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EQUIPMENT AND ACCESSORIES

Vehicle cooling unit : Available in 2 versions, 16000m3/h and 32000m3/h flow. The cooling fan assures engine safety (overheating) and helps at repeatability by giving stabilised temperatures. Workshop cabinet : Pratical, solid and attractive, it accomodates computer hardware and all test bed acessories (engine speed kit, temperature probes, ear protectors...)

Retractable stabilising rollers at the front : The stabilising rollers (delivered fixed as standard) are moved inside the bench. AutoScan becomes a pure mono-roller bench and offers the optimal tyre contact. It is possible to retract the rollers before the installation of the vehicle in order to make AutoScan compatible with cars with very low ground clearance or having low front surfaces.

Environmental monitor SME 301 : The SME 301 has the same functions as the SML 101, but also offers four type K thermocouple inputs, and four 0-10 volt analogue inputs for complementary sensors (pressure, lambda...) in order to express power output and torque in accordance with current standards. A large range of specialized sensors is available for comprehensive data acquisition, measuring for example, cylinder head temperatures beneath the spark plug, or fluid temperatures (sealed sensors).

OBD vehicle interface : Allows engine data acquisitions (Engine speed, water temperature, air admission pressure, etc ) from the diagnostic OBD connector of the vehicle without mechanical intervention or complicated instrumentation.

Engine speed kit : The engine speed kit comprises a sensor designed to measure and transmit an engine’s ignition or injection frequency to the data acquisition card. Thanks to this sensor, the software automatically calculates the transmission ratio by synchronising engine speed and roller speed signals. The equipment is supplied with different measurement devices (induction clamp, piezo-electric sensor for diesel engines, ignition coil measurement circuit...) allowing its adaptation to the majority of automobiles.

Air Fuel ratio measurment kit CMR 101 : The CMR 101 Kit allows the wide-band O2 sensor (UEGO) management, a digital display of the calculated values like average richness, air / fuel ratio, air excess (lambda) or oxygen rate. This data is transmitted to the software and allows the Air / Fuel ratio or lambda curves to be drawn according to the engine speed.

Gas analyser : Available in four or five gas versions (CO,CO2, O2, HC, optionally NOx ), this analyser also calculates corrected CO content, lambda and the stoichiometric ratio. It can moreover input engine speed and oil temperature data in order to adjust the fuel mixture under various regimes and engine loads.

Portable wireless computer system : “tablet PC” type, with touch screen and Wifi radio link. Radio receiver in the test bed cabinet for the cordless transfer of measurments between the test bed and the computer.

Radio remote control : Industrial cordless remote control case drives the whole test bed components, included the emergency stop.

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TECHNICAL CARACTERISTICS

http://www.rotronics.com email : info@rotronics.com

Tel : +33 (0)450 030 859 Fax : +33 (0)450 030 597

ROTRONICS 39, impasse de l’étang - Z.I. des Dragiez F 74800 LA ROCHE SUR FORON

DATA OF INSTALLATION

AUTOSCAN X2 Fi250 AUTOSCAN X2 Fi500 AUTOSCAN X4 Fi250 AUTOSCAN X4 Fi500

Load method Eddy Current Brake Eddy Current Brake Eddy Current Brake Eddy Current Brake

Maximum allowable power 400 KW (Ch) instantaneous 650 KW (Ch) instantaneous 550 KW (Ch) instantaneous 800 KW (Ch) instantaneous

Constant absorption capacity 250 kW (340 Ch) for 2 min 500 kW (680 Ch) for 2 min 250 kW (340 Ch) for 2 min 500 kW (680 Ch) for 2 min

Maximum allowable speed 300 km/h 300 km/h 300 km/h 300 km/h

Inertia of rotating elements 36,5 m².kg 38,3 m².kg 71,1 m².kg 73,0 m².kg

Roller diameter 600 mm 600 mm 600 mm 600 mm

Rollers mass 530 kg 530 kg 1060 kg 1060 kg

Min / Max vehicle track 1200 / 1800 mm 1200 / 1800 mm 1200 / 1800 mm 1200 / 1800 mm

Wheelbase (min / max) - - 2000 / 3000 mm 2000 / 3000 mm

Iso-speed system - - Serie Serie

Fixed stabilising rollers - - Serie Serie

Retractable stabilising rollers - - Option Option

Cooling fan Option Option Option Option

Engine speed kit Option Option Option Option

OBD interface Option Option Option Option

Air/Fuel ratio measurement system Option Option Option Option

Portable wireless computer system Option Option Option Option

Environment Monitor Light SML101 Serie Serie Serie Serie

Environment Monitor SME301 Option Option Option Option

Gas analyser Option Option Option Option

Remote control with cable Serie Serie Serie Serie

Radio remote control Option Option Option Option

Workshop cabinet Option Option Option Option

AUTOSCAN X2 Fi250 AUTOSCAN X2 Fi500 AUTOSCAN X4 Fi250 AUTOSCAN X4 Fi500

Dimensions 3500 x 1200 mm 4000 x 1200 mm 5200 x 3500 mm 5200 x 4000 mm

Excavation Hole dimensions2600 x 1000 x 620

mm3400 x 1000 x 620

mm2600 x 4070 x 620

mm2600 x 4070 x 620 mm + 800 x 1000 x

Total weight 900 kg 1150 kg 1700 kg 1950 kg

Electrical power supply single phase

Compressed air supply

220 V 16 A

Dry air 8 bar

Minimal requirements : Pentium III 1,5 GHz PC type - screen 17 ‘ - 1 Ethernet network card - 1 serial port free or 2 serial ports free (2 if CMR 101 kit) - colour ink jet and operating system Windows 2000 or XP. This material could be provided as an option by Rotronics.

The different measurement elements constituting the dyno are calibrated in the workshop before delivery.Guarantee : 1 year return to workshop.Free technical assistance during the guarantee period : fax and emails.