Engine accelerates above throttle rpm

[neodemon]

The throttle determines engine torque, as long as the total torque on the crankshaft is positive the engine will accelerate.

So there must exist torque that opposes throttle torque in the way that makes engine stop accelerating(or deccelerating) when engine rpm reaches throttle rpm. Is this true?

By throttle rpm i mean:
throttle_rpm = engine_idle_rpm + (engine_limit_rpm - engine_idle_rpm) * throttle_position