Reliable tests, DYNO MODE and disabling of electronic controls
The coexistence of regulatory factors (including the requirement of ‘sample testing’ on production lines with end-of-line test benches – ECE Standards), the implementation of which has become even more urgent due to recent events, among which ‘Dieselgate’. This, together with the need to improve anti-pollution controls, has significantly accelerated development times and the introduction of specific software features that are useful for tests on dyno test benches, commonly known as DYNO MODE.
The main purpose of this function is to disable all electronic controls that may affect the test, thus being able to accurately increase the power of the engine shaft.
This direction taken by manufacturers is also commonly seen in the recent inclusion of the chassis dynamometer as a service offered to the public, in the sales networks of the major car manufacturers.
For example, several European manufacturers have already prepared for this function to be included in almost all models with a few simple steps, if not automatically (recognising the operating conditions on the dyno test bench). The function is recognised by the vehicle’s software and duly displayed on the vehicle control or infotainment panel.
Pursuant to ECE regulations implemented by manufacturers in 2014 (production vehicle testing), to date almost 90% feature this solution ( Dyno Mode ). This is a widespread trend in the market, which will soon affect all circulating vehicles (also as a result of new vehicle safety regulations, which envisage more integration between the various control units)
This, in itself, shows the poor usability of the linked dynamometer with all its technical problems and limitations, which is unable to provide data that is actually useful for analysis or performance development.
Waiting for a product that can test all vehicles (as these products are often advertised) does not actually take into account the very high sensitivity of the electronic traction control systems, which are also able to intervene with minimum sync imperfection between the front and rear axles of the vehicle.
With the latest generation vehicles, this is coupled with longitudinal/acceleration sensors (gyroscopes), which cannot be bypassed as a result of the linked dynamometer (the sensor cuts power when it detects a stopped cabin!)
As a result of decades of collaboration with leading research and development departments in the industry, we can boast of a wealth of information regarding activation methods, even with the most modern vehicles placed on the market.
Compared to a linked axle chassis dynamometer, our AWD dynamometers guarantee lower costs, more measurement accuracy, savings in terms of time and money for installation works, and lower maintenance costs.
The technical staff at Bapro can provide you with all the assistance required to activate ‘dyno mode’ for test vehicles.