Changes

|Defines the number of strength levels for the engine brake. The braking torque at each position is based linearly on the number of positions. So for <code>engine_brake_positions: 3</code> the first position will have ¹&frasl;₃ of the maximum full strength, the second position will have ²&frasl;₃ of the maximum full strength, and the highest position will have the maximum full strength.

|The volumetric displacement of the engine in liters. It is used in base fuel consumption calculation, engine mass & inertia calculations, and also resistance default '''resistance_torque''' calculations eventually.