To prevent large acceleration loads on the compressor and the drive shaft of an internal supercharger, it is usual to:

Incorporating a spring drive mechanism in the driving gears is an effective strategy to mitigate large acceleration loads on the compressor and the drive shaft of an internal supercharger. This approach allows for some degree of flex or give within the system, which helps absorb and dampen the forces generated during rapid changes in speed or load.

When the supercharger undergoes sudden accelerations or decelerations, the spring mechanism can compress and extend, thus reducing the impact of the forces that would otherwise be transmitted directly to the compressor and drive shaft. This design enhances the durability of the components and minimizes the risk of mechanical failure due to excessive stress.

In contrast, prohibiting "slam" acceleration focuses on operator behavior and is less a mechanical solution. Relying on the inertia absorbing qualities of exhaust gases is more about the dynamics of gases rather than directly addressing the mechanical stress on the components. A Vernier drive coupling typically refers to precision adjustments and might not effectively manage large acceleration loads.

Thus, a spring drive mechanism proves to be the most suitable choice for managing large accelerations that can impact the supercharger system.