The engine WSFC component models a gasoline or diesel engine using a torque map. The torque map is a three dimensional lookup that calculates engine torque based on the engine speed and accelerator pedal position. The torque map is defined by using the EngSpeeds and EngTorq variables.

Once the engine torque is known this is summed with the shaft torque (the torque applied onto the engine from the transmission) and the engine friction torque (FrictionTorque) which represents the drag from any accessories. This total torque is divided by the engine inertia (Inertia) and integrated to calculate the engine velocity (Vel3).

The specific fuel consumption is modeled using a three dimensional lookup that calculates the specific fuel consumption based on the engine speed and accelerator pedal position. The specific fuel consumption map is defined using the EngSpeeds and EngSFC variables. The fuel consumption is calculated by multiplying the specific fuel consumption by the current engine torque and engine speed. 
 

SimRealVar EngTorq90 - Engine Torque at 90 degrees (Nm)
SimRealVar EngTorq80 - Engine Torque at 80 degrees (Nm)
SimRealVar EngTorq70 - Engine Torque at 70 degrees (Nm)
SimRealVar EngTorq60 - Engine Torque at 60 degrees (Nm)
SimRealVar EngTorq50 - Engine Torque at 50 degrees (Nm)
SimRealVar EngTorq40 - Engine Torque at 40 degrees (Nm)
SimRealVar EngTorq30 - Engine Torque at 30 degrees (Nm)
SimRealVar EngTorq20 - Engine Torque at 20 degrees (Nm)
SimRealVar EngTorq10 - Engine Torque at 10 degrees (Nm)
SimRealVar EngTorq0 - Engine Torque at 0 degrees (Nm)
SimRealVar EngSpeeds - Engine Speeds for Torque Map (rpm)
SimRealVar FrictionTorque - Engine Friction Torque (Nm)
SimRealVar Inertia - Moment of Inertia (kg-m-m)
SimRealVar Accel - Accelerator Pedal Position (deg)
SimRealVar Gear - Driver Gear -1 Reverse 0 Neutral 1 Low 4 Drive
SimRealVar Torque3 - Shaft Torque (Nm)

SimRealVar EngSFC90 - Engine SFC at 90 degrees (kg/kW-hr)
SimRealVar EngSFC80 - Engine SFC at 80 degrees (kg/kW-hr)
SimRealVar EngSFC70 - Engine SFC at 70 degrees (kg/kW-hr)
SimRealVar EngSFC60 - Engine SFC at 60 degrees (kg/kW-hr)
SimRealVar EngSFC50 - Engine SFC at 50 degrees (kg/kW-hr)
SimRealVar EngSFC40 - Engine SFC at 40 degrees (kg/kW-hr)
SimRealVar EngSFC30 - Engine SFC at 30 degrees (kg/kW-hr)
SimRealVar EngSFC20 - Engine SFC at 20 degrees (kg/kW-hr)
SimRealVar EngSFC10 - Engine SFC at 10 degrees (kg/kW-hr)
SimRealVar EngSFC0 - Engine SFC at 0 degrees (kg/kW-hr)