SI Engine Simple Torque Model

For the simple torque lookup table model, the SI engine uses a lookup table map that is a function of engine speed and load, Tbrake=fTnL(L,N), where:

  • Tbrake is engine brake torque after accounting for spark advance, AFR, and friction effects, in N·m.

  • L is engine load, as a normalized cylinder air mass, dimensionless.

  • N is engine speed, in rpm.

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