2WD CAR AND LCV DYNAMOMETER

Power bench tester range identified as "DF2 line".

Available in two different versions:

• Inertial (code DF2IS), equipped with flywheel mass;
• Braked (code DF2FS), equipped with eddy current brake.

If supplied with flywheel mass, DYNORACE can be used to record and analyse the vehicle performance like torque, power, speed and engine rpm. Furthermore, the management software allows to perform accurate tests and assessments on the working precision of onboard tools like speedometer/tachometer.

The eddy current braked version of DYNORACE offers additional functions and plotters to enhance the range of tests supported. The exploitation of the load simulator programs determines the ideal basis for vehicle diagnostic and testing under load conditions, to verify and recreate problems occurred as well as improve the engine efficiency (motorsport purposes).

The strategic choice of a double-roller frame per wheel clearly highlights our approach: maximum safety conditions during the tests. Each wheel is positioned between two rollers to fix the vehicle and secure the working operations (the alternative choice of a singleroller frame per wheel could determine a dangerous "floating" effect of the vehicle and consequent higher risks during the tests).

The rollers are mounted on high performance bearings conceived for aeronautic purposes.

DYNORACE allows to achieve tests on top performance vehicles (also in constant traction) up to 400 KW per axle and 320 Km/h speed.

The measurement data are collected and standardized through a barometric station integrated in accordance with the following regulations:

• DIN 70020
• EWG 80/1269
• ISO 1585
• SAE J1349
• JIS D101001

The exploitation of the load simulator programs supported by the management software of DYNORACE allows to acquire and display measurement data such as:

• Maximum power at the wheel, graphic representation and numeric tables of the measurement data collected during tests performed;
• Maximum power at the engine (nominal), graphic representation and numeric tables of the measurement data collected during tests performed;
• Torque at the wheel, nominal torque at the engine, graphic representation and numeric tables of the measurement data collected during tests performed;
• Load simulation at constant rpm;
• Load simulation at constant speed;
• Load simulation at constant traction condition;
• Road simulator according to CX and realistic variable load conditions;
• Measurement of the discrepancy of the speedometer/tachometer.

TECHNICAL SPECIFICATIONS	DF2IS (inertial)	DF2FS (braked)
DIMENSIONS
Bench dimensions: (mm) Roller width: (mm) Distance between rollers: (mm) Roller diameter: (mm) Carriageway: (mm) Wheelbase: (mm) Lifting and blocking Weight: (kg)	3190x1060x390 650 550 318 850-2.100 // pneumatic 1.280	3190x1060x390 650 550 318 850-2.100 // pneumatic 1.100
PERFORMANCES
Max speed: (km/h) Max power at the wheel: (kW) Max tractive force: (kN) Max revolution: (rpm) Max weight per axle: (kg) Wheel dimension: (inches) Front/rear axle connection:	320 400 - 12.000 2.500 13-23	320 400 7.5 12.000 2.500 13-23
DATA MANAGEMENT
Roller rev. measurement: (rpm) Power measurement: (N) Brake management: (vcc) Exhaust gas temperature: (K) Oil temperature: (°C) Boost pressure sensor: (bar) Oxygen sensor: (AFR-λ-Custom) Hall rpm magnetic sensor: (rpm) Analog input: (Vdc) EOBD data acquisition:	20.000 (encoder) - - 1.000 150 -1.00- + 3.00 yes yes 0-15 yes	20.000 (encoder) 5.000 strain gauge 192V PWM 8bit 1.000 150 -1.00- + 3.00 yes yes 0-15 yes

 

4WD CAR AND LCV DYNAMOMETER

Power bench tester range identified as "DF4 line".

Available in three different versions:

• Inertial (code DF4IS), equipped with flywheel masses (2);
• Braked (code DF4FS), equipped with eddy current brakes (2).
• Braked with HLS® system (code DF4FSHLS), equipped with eddy current brakes (2) and supplied with hydraulic linking system between front/rear axle.

The working and performance carried out by this range of dynamometers can meet any kind of technical expectation. The user-friendly logic and versatility of this device, together with the highest technical profile of the solutions offered, make DYNORACE the ideal machine for servicing both workshops willing to integrate a diagnostic station and tuning workshops involved in motorsport.

The possibility to recreate working defects/problems occurred on the road and the repeatability of the tests performed (which involves the stability of the measurement data acquired) have always been pursued as primary targets in the development of the device. The consequence of this approach is the continuous improvement of our range of dynamometers and the highest trustworthiness of the results acquired during the tests and displayed.

The mechanical reliability of the dynamometer is certified, determined by the use of high quality parts, laser technologies and lower tolerances in the production process. This methods - although remarkably expensive - allows to offer a superior quality and a more performing range of dynamometers. Therefore, the operations concerning the mechanical maintenance of the bench are reduced, less frequent and simplified. This is valid also for the hydraulic system offered in the HLS® version: as a term of comparison, power bench dynamometers utilising a belt to transfer the traction between front/rear axle require a deep technical check every 40 hours of use and frequent inspections to verify the correct set-up.

Furthermore, the modular concept of DYNORACE allows any subject to find the most suitable solution for their needs (2WD or 4WD, inertial or braked), with the certainty of a possible future upgrade to higher and more performing versions.

The version equipped with HLS® (hydraulic linking system between front/rear axle) is the revolutionary solution conceived by Dimtech engineering for the data acquisition and testing operations of the most advanced traction control systems and dynamic torque management available nowadays.

HLS® permits to transfer the motion to all the wheels even in case of a 2WD vehicle, to replicate the road and simulate the normal working.

HLS® is the only system in the world allowing to activate and deactivate the connection between front/rear axle, thanks to its hydraulic link.

Important notes about the technical solutions available in this project associated to safety issues. Being the connection between front/rear axle hydraulic, DYNORACE offers a higher standard for what concerns safety during the tests and reliability of the system if compared with the more economical connection with a belt, available on many other dynamometers. When testing high performance vehicles under load conditions, the power transferred from the wheel to the rollers at high speed could create potential risks especially if the linking solution by belt is combined with a single-roller frame. With HLS® and the double-roller frame technology, the safety standard offered by DYNORACE is undoubtedly superior.

TECHNICAL SPECIFICATIONS	DF4IS (inertial)	DF4FS (inertial)	DF4FSHLS (braked HLS)
DIMENSIONS
Bench dimensions: (mm) Roller width: (mm) Distance between rollers: (mm) Roller diameter: (mm) Carriageway: (mm) Wheelbase: (mm) Lifting and blocking Weight: (kg)	3190x4120x400 650 550 318 850-2.100 2.000-3.040 pneumatic 2.700	3190x4120x400 650 550 318 850-2.100 2.000-3.040 pneumatic 2.300	3190x412x400 650 550 328 850-2.100 2.000-3.040 pneumatic 2.450
PERFORMANCES
Max speed: (km/h) Max power at the wheel: (kW) Max tractive force: (kN) Max revolution: (rpm) Max weight per axle: (kg) Wheel dimension: (inches) Front/rear axle connection:	320 400 - 12.000 2.500 13-23 //	320 400 15 12.000 2.500 13-23 //	320 400 15 12.000 2.500 13-23 idraulic
DATA MANAGEMENT
Roller rev. measurement: (rpm) Power measurement: (N) Brake management: (vcc) Exhaust gas temperature: (K) Oil temperature: (°C) Boost pressure sensor: (bar) Oxygen sensor: (AFR-λ-Custom) Hall rpm magnetic sensor: (rpm) Analog input: (Vdc) EOBD data acquisition:	20.000 encoder - - 1.000 150 -1.00- + 3.00 yes yes 0-15 yes	20.000 (encoder) 5.000 strain gauge 192V PWM 8bit 1.000 150 -1.00- + 3.00 yes yes 0-15 yes	20.000 (encoder) 5.000 strain gauge 192V PWM 8bit 1.000 150 -1.00- + 3.00 yes yes 0-15 yes

AVAILABLE TESTING PROCEDURES

DYNORACE allows to perform a multitude of tests and to recreate the road conditions in order to check and verify the correct working of the vehicle.

Due to the problems tied to the management of the diesel particulate, it is important to mention the possibility to carry out and achieve the regeneration of the anti-particulate filters (very complicated operation if performed on the road because of the impossibility to keep the constant speed/load condition for the time required to completely regenerate the filter).

SOFTWARE AND ITS APPLICATIONS

The management software provided with DYNORACE allows customization of graphs/tables and permits to work on the results, to save them on disk, print them in customized structures and overlap them for comparative purposes. A special feature also allows multiple sections up to eight tests for the same vehicle.

These helpful functions can contribute in a decisive way to elevate the profile of the workshop and to facilitate troubleshooting activity.

It is important to know that our power bench testers are equipped with a series of sensors aimed at acquiring data in a digital (OBDII) or analog way, such as: manifold pressure, environmental pressure and temperature, engine oil pressure, exhaust gas temperature, RPM acquisition, oxygen rate (lambda).

The tools concerning the data acquisition channels available through the electronics provided with DYNORACE can be displayed in the management software in a very simple, clear way.

To facilitate the entrance and the exit of the vehicle being positioned in the rollers area, DYNORACE software manages the blockage of the rollers and the simultaneous lift of the specific metallic supports underneath the wheels.

This simple system allows to raise the vehicle at the end of the testing operations, so making the exit operation easier and - as a matter of fact - transforming the dynamometer (rollers included) in a safe area without moving parts.

DIMTECH ENGINEERING

An engineering, research and design team of experts allows Dimtech to conceive technological platforms aimed at following any development in the Automotive sector: this is the best way to guarantee striking achievements even for those vehicles whose technology is particularly advanced. Moreover, special-purpose testing rooms equipped with power bench testers and road simulators for cars, motorbikes, tractors and trucks allow Dimtech to carry out new developments as well as functional improvements in order to launch and market effective and ready-for-use applications, which passed a specific technical test.

The solutions offered by Dimtech in the field of power testing & road simulating are multiple: not only the range includes DYNORACE for car, but also DYNOBIKE (motorbikes), DYNOTRUCK (heavy truck and buses) and DYNOTRACTOR (tractors and agricultural vehicles).

The dynamometer manufactured by DIMTECH complies with the following regulations: Directive 2004/108/EC of 15th December 2004 about electromagnetic compatibility of machinery, carried out in Italy with Legislative Decree Nr.320 of 31st December 2004; Directive 2006/95/EC of 12th December 2006 about health and security relating to development and manufacturing of machinery, carried out in Italy with Legislative Decree Nr. 17 of 27th January 2010.

The dynamometer as machinery is supplied with a REPORT OF RISK ANALYSIS which explains the working of the system, including all those regulations which minimize possible dangers deriving from the use of the dynamometer itself. The dynamometer is developed and manufactured by the abovementioned Directives, therefore it is not a danger provided that it is used following DIMTECH's instructions described in the user and maintenance manual.

DIMTECH continues keeping a System of Quality Management since 2002 so always seeking innovation and quality.

Since 2009 the DIMSPORT TECHNOLOGY Group includes the three companies being part of it and having been certified with UNI EN ISO 9001:2008 Quality Management System. This is aimed at giving customers confidence that any process in the companies of the group is under control.