Today we will talk about the engine dynamometer (engine dyno), and introduces us to him a specialist company «Uspensky Rally Tecnica» — Leonid Drogaytsev. The URT installed SuperFlow NSCR fully configured — it is the only not only in Moscow but also in the whole of Russia, like the engine stand. Stands the old configuration is, for example, in Togliatti, but they are not as intelligent and automated. In SuperFlow NSCR many automation, which facilitates the work of the stand and allows you to focus on the main goals and objectives.
The operating principle of the motor stand is characterized in that it is placed directly on the motor itself fully configured with inlet and outlet systems (up to the terminal banks muffler), separate from the rest of the machine. Thus nothing «extra» does not make adjustments to measurements made:. No tires, no transmission and other power in this case is removed from the flywheel (according to the same principle of state power cars and manufacturing plants).
It is assumed that the error measurement on a wheeled stand — 2 per cent, which in fact is not too much, for example, with a 100 hp It is 2 hp, and the engine — only 0.2 percent! For proper operation of the stand and the measurement accuracy of him, of course, need to properly follow: after a certain number of hours to carry out an oil change, and specific sites, as well as calibration.
According to the rules of work safety and motor stand must be in a specially equipped room, where the conditions most relevant to those in which the engine is running, installed in the car. Experts URT constructed room stand on the recommendations directly SuperFlow: ventilation system, air flow, removal of exhaust gases, etc. Interestingly, among the equipment used there is even a weather station, which allows you to bring to a common denominator resulting data power and torque.
During the stand no one should be inside the premises, the operator is located outside of the special control panel to the display which displays all necessary information. He sees the engine speed, torque, speed, and sensor box, which has 250 channels for various sensors, allows you to create any set of parameters for the analysis of temperature, pressure, the ratio of fuel and air, etc.
Thus online can see everything that happens with the engine, so you can quickly choose the right configurations «iron», to search for suitable components, configuring the computer, see the unevenness of the work on the cylinders (used many sensors per cylinder to realize how correct it. works) in a timely manner to prevent damage, etc. for example, in a room with a motor stand of the volume of air is fully changed 11 times a minute — this is done to ensure that the engine consumes only fresh air, not exhaust fumes.
If there is a car on the stand as a whole, in the case of a decision to replace any parts, it should be removed from the stand, and then remove the engine and replace. In the case of a motor stand everything is easier: to change the camshafts, exhaust, and anything can be fast enough. This versatility allows you to do work in many interesting findings in terms of tuning: to take items with different characteristics and literally 15 minutes to carry out two measurements and see the difference instantly. Motor stand is used to adjust the engine is not software, but «iron», choose the length of the exhaust manifold, to find the correct installation of camshafts, to evaluate the efficiency of the oil pump or liquid cooling pump and so on.
Stand SuperFlow NSCR for 2500 horsepower and can spin up to 10,000 rev / min. In URT, of course, working mostly with engines of Subaru and Nissan, as there were projects such as, for example, the internal combustion engine for sitroenovskoy ring and track racing. If at the end to get the engine's top configuration, the work carried out are limited to motorized stand. If there is a need to trace the car to work in the complex, after he, together with the power unit has already put on the wheel stand.
