Dyno Function requirements:
Sweeps, defined start RPM1(Starting at a static RPM undependent of torque), defined top RPM2 and defined time between RPM1 and RPM2 or defined RPMs/Sec.
Should also be able to start at high RPM1 and end at a low RPM2, running the sweep backwards.
.......
Static RPM undependent of torque.
.......
A constant load (easier to tune acceleration enrichments while allowing the rpms to rise)
Much like a inertia-mode, letting the amount of power decide the acceleration-rate, could be a great future.
.......
Steadystate.
Holding it at a defined RPM for defined timed before moving to next defined RPM (every 250rpm maybe?)
ECU-Hardware requirements:
Inputs:
At least two Hall-sensor inputs for RPM measurement of each hub(maybe four for future 4wd expansion possibilities).
Maybe a inductive clamp-on inductive pickup, when running cars with automatic transmissions.
Two-four loadcell inputs (4ch of mcp3208. 12bit resolution/channel should be enough, that’s 1nm / unit at 8000nm on 2wd)
Wideband O2 input (One or two)
A bunch of type-k inputs.
Some low-temperature inputs(0-100c - IAT and SAE/DIN-correction, maybe for measuring hub-temperature ? )
Some pressure inputs (Maybe 3-4 ? MAP and Exhaustpressure – and weather-correction)
Outputs:
Two-four 0-5v for controlling the breakingpower.
Coolingfan output (Rising fan-speed when the run is about to begin and running it at a lower speed between runs, configurable. Needs external fan-controller.)
Dyno Software requirements (could be a simple visualstudio application):
Plot:
While the run is made the Torque and HP measurements should be ploted onto a view that has configurable X- and Y-axles.
Be able to choose to plot every run on the same screen(like dynojet, very easy to see differences between every run.
Be able to add several curves directly to the sheet, like map, exhaustpressure egt´s and so on.