The dynamometer and what should be considered!

A good dynamometer plays an important role for many car lovers and tuning fans. By checking the exact series performance of your own vehicle can be determined and in the case of a performance increase of course the corresponding difference. When running on a dynamometer, all achievable torque speeds are measured quickly and easily. The performance of the vehicle can be calculated precisely from this.

Your own dynamometer!

Some tuners are equipped with their own dynamometer, such as a Rotronics X4 Plus or a dynoKRAFT A200-4WD-ML. And the tuner SKN has even built a test stand up to 1.470 kW (2.000 hp) with the SKN LPS, which makes measurable 735 kW / 1.000 hp per axle possible. If you take the Rotronics X4 Plus as an example, then this, like the others mentioned, is considered to be one of the most accurate and modern test benches on the market. It can be used individually for vehicles with all-wheel, rear or front-wheel drive, which is a particularly important criterion for a test bench.

In the area of ​​the dynamometer of the Rotronics X4 Plus, this property is even a unique selling point and a quality feature. Unfortunately, many tuners only have the opportunity to test their development on the road. This means that there is a risk for the customer vehicles and the Driver's license cannot be excluded. In order for chip tuning and other components to increase performance to be developed and checked in a comprehensible manner, a dynamometer is an important tool and, in our opinion, even mandatory!

Special services!

If you give your vehicle to a tuner, they can check the performance of the vehicle with a dynamometer if you wish. After a measurement, you will usually receive a detailed protocol that shows all the important information. A big advantage is that many tuners can already measure up to an output of around 1.000 hp. Usually that should be enough. If the test bench is up-to-date, always well maintained and from a well-known manufacturer, the measurement should be precise and reproducible at the same time. If you take the Rotronics X4 Plus as an example again, the special single roller technology on this test bench is an advantage. With it, high tire temperatures and the associated tire wear are a thing of the past.

With a very powerful vehicle, this test stand can even be accelerated to up to 400 km/h. This gives the tuner the advantage that even fast vehicles can be tested without any problems in high gears and at V-Max. This is particularly useful if the maximum speed limit (V-max limit) has been removed in advance and you want to test whether the new software works. However, a fresh air blower must always ensure that the charge air, the transmission, the differential and the engine are sufficiently cooled. A fresh air blower is absolutely mandatory for such a test and must be used. And a good test stand is ideally set up in such a way that formula vehicles and lowered sports cars can also be precisely measured.

A safe measurement

A good test bench should always be equipped with a stable fastening system. This means that many vehicles can be fixed on the respective test bench without the use of tension belts. Safety is then just as guaranteed as in a test laboratory from one of the major vehicle manufacturers. A good fastening system is characterized by the fact that if there is a tow hook at the front or rear, the vehicles do not have to be lashed in the lower area. This increases the measurement accuracy. And the tires are only stressed during the measurement to the same extent as would be the case when driving on the road. So why a test bench? The test bench is required for a comprehensive analysis. It can be used to determine the extent to which the performance potential of a vehicle has been exhausted. The performance of a tuned vehicle can be effectively represented and compared by means of a before-after comparison.

The measurement system can be crucial!

For price reasons, some tuners use a measuring system that can be attached to the wheel hub, for example. This is a measuring system from Insoric. With inexpensive systems, however, it is possible that the measurement data cannot be determined precisely enough. However, this is often more due to incorrect entries or an incorrect evaluation and only rarely to the measuring system itself. At the same time, the car should always be driven at full throttle on the road during such a test. It goes without saying that there is always a certain risk associated with a high engine output. For this reason, a power measurement is often only carried out up to third gear. So the vehicle is not going too fast. However, measuring errors can occur if the vehicle accelerates briefly in third gear. With regard to the boost pressure, the engine often does not have the time to build it up completely. The system isn't completely bad, but the measurement results are often not useful for professional performance measurement and for precise adjustment work.

Conclusion on the dynamometer!

A good dynamometer, especially one for all-wheel drive vehicles, is an important tool of a tuner, which is used every day. The instrument makes the development of performance improvements much easier and more effective. We hope that you have read the info report on the topic / term dynamometer (further names / keywords: performance measurement, dynamometer, dynamometer, dynamometer, dynamometer, dynamometer, vertex dynamometer, Dyno, Dynojet, dynamometer) from the field of autotuning.

More information? In our article there is especially about the performance measurement process "The performance measurement: information and the process on the Dyno!"

In summary, what should you pay attention to and what is there?

• there are, for example, +2000 hp dynamometers
• an all-wheel dynamometer is recommended
• Speeds of up to 400 km / h can be measured
• Manufacturers are Maha, AHS, ASA, Insoric, Rotronics, Dynojet, MTL etc.
• good Fresh or exhaust air systems are important (e.g. using a two-chamber air system) - fresh, unheated supply air from high-performance air turbines
  - if possible with individually adjustable turbines
  - if possible with individually adjustable turbines for charge air cooling
  - if possible with individually adjustable turbines for engine and underbody cooling
  - If possible with individually adjustable turbines for rear axle / differential cooling
• a good test bench should enable realistic and material-friendly test conditions
• Exhaust chamber system should ensure that the heated air is not directed back to the engine

How does a roller performance test bench work?