VISH-130B is a new generation fuel cell engine system developed for the heavy truck market. The new model has significantly increased the commonality of core components in the same class of engine platform, and the standardisation of interfaces is conducive to batch production and delivery. Through a series of parts optimization and upgrading, the volume of the engine system is reduced by 22.9%, and the volume power density is increased by 31.8%. The engine has an advantageous application prospect in the field of heavy trucks and special vehicles. The system has been proven to be lightweight and highly reliable. Through continuous optimisation and upgrading of the control strategy, the hydrogen utilisation rate has been significantly improved, the system structure is more compact and better adapted to the needs of mainstream heavy trucks, and the space is reasonably laid out to facilitate maintenance and servicing. The engine has been repeatedly tested and proven to have a more mature control strategy and a stable and reliable system operation.