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Chassis Dynamometer for cars

AUTOSCAN_UKP_08_05

AutoScan Fi

Modular and expandable concept

Compatible with all vehicle types

Low Inertia technology

Modern and user friendly software interface

Secure and safe for both vehicles and users

2 & 4 wheel drive versions

Iso Speed System

Optimised tire/wheel contact

Driving under dynamic load

controlled by user defi ned road

laws

2/10

USE OF A TEST BED

The technology used in cars is evolving as much as their

performance, and it is becoming increasingly difficult 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-HOW

For 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 SUPPORT

Experience 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.

3/10

AUTOSCAN 4X - FI250 & FI500

Autoscan 4X is a roller test bench for 2 and 4 wheel drive cars. It benefits 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 SYSTEM

A 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 !

4/10

AUTOSCAN 2X - Fi250 & Fi500

Autoscan 2X is the two roller version of the 4X model. This version offers the same technology and

the same efficiency 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.

5/10

EASY AND REPRESENTATIVE TESTS

Tests 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 difficulty moving on rough ground and

up a hill than a light and aerodynamic vehicle moving on smooth and flat 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 MEASUREMENT

To 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.

6/10

ACCURATE AND REPEATABLE TESTS

Autoscan 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 LINK

The 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 BENCH

The 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 COOLING

The 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 DESIGN

AutoScan 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.

SECURITY

The 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 :

7/10

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 efficient. 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 file 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.

2 0

4 0

6 0

8 0

1 00

1 20

1 40

1 60

k W

m / s ²

0 2 0 40 60 80 100 120 14 0 1 60 1 80 200 22 0 24 0 2 60

Vi tes s e v é hi c u l

e (Km /

h )

au to s ca n

T e s t

1 è re

2è me

3è me

4è me

5 è me

6 è me

1 0 00

2 0 00

3 0 00

4 0 00

5 0 00

6 0 00

7 0 00

8 0 00

0 2 0 4 0 6 0 8 0 1 0 0 1 2 0 14 0 16 0 18 0 20 0 22 0 2 40 2 60 2 80

Vitess e véhicule (K m/h )

A utoscan fi 4X

1 er e

2 èm e

3 èm e

4 èm e

5 èm e

6 èm e

L o i

d e ro ute SCx =0 , 5

L o i

d e ro ute Scx = 0, 6

100

120

140

160

1 000

2 000

3 000

4 000

5 000

6 000

7 000

tr/ mi n

0 20 40 6 0 80 10 0 1 20 1 40 160 180 20 0 2 20 2 40 260

te s se vé h i cu l e (Km / h )

(c ) Ro tron i c s, 2 00 1

a u to sc an T es t

1è re

2è m e

3 èm e

4è m e

5è m e

6è m e

8/10

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, flow, 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 flowmeter 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 specific 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.

9/10

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 analyzer :

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.

10/10

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

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

Inertia of rotating elements

36,5 m².kg

38,3 m².kg

71,1 m².kg

73,0 m².kg

Roller diameter

600 mm

Rollers mass

530 kg

1060 kg

Min / Max vehicle track

1200 / 1800 mm

Wheelbase (min / max)

2000 / 3000 mm

Iso-speed system

Serie

Fixed stabilising rollers

Serie

Retractable stabilising rollers

Option

Cooling fan

Option

Engine speed kit

Option

OBD interface

Option

Air/Fuel ratio measurement system

Option

Portable wireless computer system

Option

Environment Monitor Light SML101

Serie

Environment Monitor SME301

Option

Gas analyser

Option

Remote control with cable

Serie

Radio remote control

Option

Workshop cabinet

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 dimensions

2600 x 1000 x 620

3400 x 1000 x 620

2600 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.