As the topic says, my question is whether it is possible to set the Power @ rpm independently of the tourqe @ rpm? If so, how can I do this? I would like to make a Turbo engine for a privat Nissan 300ZX Mod. Thanks in advance!
Why would you? Power is torque times rpm (lets say so for now). However; the turbo is actually working in the engine files. That way you don't have to "disconnect" power and torque but just let the turbo work and the power goes up. If you would like to get some inspiration; I have a lot of turbo engines laying around here.
I would like the power and Tourqe curve for the Nissan 300ZX as good as it goes. Here you can see that the tourqe peak is at 3600 rpm and then falls. The whole power rises up to 6400 rpm and falls only then. You can see that the peaks of Power and Tourqe are far apart. I would like to simulate this. Is that possible? How can I do this on the best? With the help of http://meetme.bplaced.net/rF2_onlineTools/ I converted an Engine.ini from rFactor1 to rFactor2. There I also have the following code: Code: TurboInertia=1.15e-4 TurboFriction=(0.002,2.5) TurboStaticFrictionWatts=100 TurbineFlowTable=(0,0.00756) TurbineFlowEffects=(1, 0.52) TurbineFlowEffects=(1.005, 0.53) TurbineFlowEffects=(1.01, 0.55) TurbineFlowEffects=(1.016, 0.58) TurbineFlowEffects=(1.023, 0.6) TurbineFlowEffects=(1.031, 0.63) TurbineFlowEffects=(1.04, 0.65) TurbineFlowEffects=(1.05, 0.67) TurbineFlowEffects=(1.061, 0.685) TurbineFlowEffects=(1.073, 0.697) TurbineFlowEffects=(1.086, 0.706) TurbineFlowEffects=(1.1, 0.711) TurbineFlowEffects=(1.115, 0.715) TurbineFlowEffects=(1.132, 0.718) TurbineFlowEffects=(1.15, 0.72) TurbineFlowEffects=(1.17, 0.716) TurbineFlowEffects=(1.192, 0.71) TurbineFlowEffects=(1.213, 0.695) TurbineFlowEffects=(1.238, 0.68) TurbineFlowEffects=(1.262, 0.665) TurbineFlowEffects=(1.293, 0.655) TurbineFlowEffects=(1.334, 0.64) TurbineFlowEffects=(1.387, 0.63) TurbineFlowEffects=(1.46, 0.618) //TurbineFlowEffects=(1.568, 0.608) //TurbineFlowEffects=(1.738, 0.6) //TurbineFlowEffects=(2, 0.595) //TurbineFlowEffects=(2.45, 0.593) //TurbineFlowEffects=(2.9, 0.592) //TurbineFlowEffects=(3.1, 0.591) //TurbineFlowEffects=(3.25, 0.590) //TurbineFlowEffects=(3.35, 0.589) //TurbineFlowEffects=(3.4, 0.588) //TurbineFlowEffects=(3.45, 0.587) //TurbineFlowEffects=(3.48, 0.586) How can I at the best simulate 388 NM @ 3600 rpm, and 300 HP @ 6400 rpm? I am still a beginner in rFactor modding and bring almost no knowledge.
I would do the following; make the torque line as it should be (388/3600) and adjust (trial and error) the turbo. There is a button combination (sorry, forgot which one.....) to see the turbo pressure and power output in devmode; you can finetune from there.
Power is torque over time.. they are directly connected to each other, you cannot disconnect them. I have encountered before that some manufactures stated torque and power figures that did not make any sence together, making me think that they measured each individually in their respective best conditions to get the highest possible number
Many, many years ago, I got my one and only look at a dyno-chart for a customer racing engine from a famous manufacturer. The results from the dyno were off from the published claims by a fair margin. Also, one of the long standing issues when discussing engine files is the difference from power measured directly off the engine crankshaft, or the measurements taken from spinning the drive wheels(aka on a Dynometer) The rear wheel measurements are often 10 to 15% lower than the totals reported from the Crank. We are left to guess where/how the power measurements were compiled. The Dodge Hellcat engine is famous for producing 707hp and being the most powerful production engine available in a mass market car. However, that 707 doesn't even translate to 600hp at the rear wheels. Good luck sorting all of this out.
Well, what do you know; typed the torque values in my tool and got automatically the right power out of it: The thing is; there is no turbo calculated into this Excel................so; using these values, should make the engine perform like your graphic, without even a turbo.
Its not public as it is not done; a lot of scrappy stuff in there still. But you can use it if you want: https://dl.dropboxusercontent.com/u/13313246/Tools cars/power curve_calc_Final_Nissan 300ZX.xlsx
Hmm @Raintyre i have the same formula only the 7120 is different #confused# P[kW] = T x n / 9549 Here P is the power in kilowatts [kW] T torque in Newton meter [Nm] n and the rotation speed in revolutions per minute. 9549 is a dimensionless factor. Source is dr. ir. Nico Smets Ingenieurswetenschappen Vrije Universiteit Brussel On another note Navigator has done some great things regarding turbo engines in rF2
I have the power-torque curve correctly built (but non-turbo). In due course I will try to build it as a turbo. Thanks @Navigator for your Excel and everyone else! @Navigator, you could calculate me the correct comprossion / back tourqe? Is back tourqe and compression the same? That would be nice of you! Thanks again!
Like Torque at any given RPM, the "Back torque" or "Compression" is something that is measured rather than synthesized with calculation. It is characteristic to a particular engine.
If you implement the turbo, its going to have more power than the 300 hp now......? Anyway; I can take a look at the back torque, but I have to be able to drive the car. Do you have it in devmod? Are you willing to send it over?
Found it! https://forum.studio-397.com/index....for-turbo-pressure-visible.53246/#post-862341 Had to ask back then; I keep forgetting these things (as you see again now)