What are the differences between BMW B48 engine models A, B, C, and D?

[Corbin]

BMW B48 engine models A, B, C, and D differ in terms of maximum power output, maximum torque, and compression ratio. Introduction to engine power: Engine power refers to how quickly the engine performs work. The work done by the engine per unit time is called engine power. When engine power increases, fuel consumption relatively increases, resulting in greater vehicle output power. For vehicles with the same displacement, higher power is better. Engine torque: Engine torque refers to the rotational force output from the crankshaft. Under constant power conditions, it has an inverse relationship with engine speed - higher speed results in lower torque, and vice versa. Torque reflects a vehicle's load capacity within a certain range. Torque is an important standard for measuring automotive engine performance, and a vehicle's torque is directly proportional to its engine power. Engine compression ratio: This is the ratio of total cylinder volume to combustion chamber volume in an internal combustion engine, representing an important structural parameter. When the piston is at bottom dead center, the cylinder has maximum volume (Va). When the piston is at top dead center, the cylinder volume is called combustion chamber volume (Vc).