Expected actual series

The VSI refers to the expected series weight of a vehicle at the time of Start of Production (SOP), taking into account all reported opportunities and risks. This weight forecast is a crucial aspect of the vehicle development process as it provides a realistic estimate of the final vehicle weight and serves as a basis for planning and decision-making.

The VSI is determined through a comprehensive analysis and evaluation of all relevant factors that influence the weight of the vehicle. This includes the weights of the individual components and systems, the choice of materials, the design and the manufacturing processes. In addition, all known opportunities and risks that could influence the weight of the vehicle are taken into account. Opportunities could be, for example, weight reductions through the use of new lightweight materials or optimized design techniques, while risks could include unexpected weight increases due to design changes or additional requirements.

Determining the VSI is a continuous process that runs through the entire development cycle of a vehicle. The VSI is updated at regular intervals to reflect changes in design, materials or component specifications. This enables engineers to monitor the progress of development and ensure that the vehicle weight remains within the specified target weights.

An important aspect in determining the VSI is the consideration of lightweight construction methods and materials. By using lightweight materials, engineers can reduce the weight of the vehicle while ensuring structural integrity and safety. These materials and technologies help to optimize the VSI and increase the efficiency of the vehicle.

The VSI serves as the basis for various decisions in the development process, including the design of chassis, the dimensioning of components and the planning of tests and trials. By regularly updating and monitoring the VSI, engineers can identify potential deviations at an early stage and take measures to optimize the vehicle weight.

In summary, VSI is a key aspect of vehicle development and design. By realistically estimating and continuously monitoring the expected series weight, engineers can ensure that the vehicle meets performance, efficiency and safety requirements while complying with legal regulations.