I have an 4 stroke spark ignition engine simulator which takes user inputs and outputs performance data.
I need rpm, torque and brake specific fuel consumption (bsfc) to plot the bsfc map. I am able to plot torque and bsfc against rpm respectively without any problems.
Since a contour plot requires x(rpm), y(torque) and z(bsfc) where z is a function of x and y, how can I express bsfc in terms of rpm and torque or can I take advantage of the simulator to produce raw data required to plot the map saving me trouble in deriving the equation. If its the latter, how can I obtain bsfc data? What parameters should I change or keep constant?