E-Drives and Hybrids

We are expert partners in the development of hybrid powertrains for commercial vehicles

Hybrid powertrains are also being used increasingly in the commercial-vehicle segment to achieve maximum system efficiency. Particularly in urban transport with its many accelerating and braking cycles, hybrid powertrains can help to cut fuel consumption and CO2 emissions by recuperating braking energy. As one of the leading system integrators for hybrid vehicles, we can provide all-encompassing expertise in all of the disciplines involved and offer our clients the full range of hybrid development services on a one-stop shop basis.

Topology (serial, parallel, power-split or plug-in hybrid) and design of the energy storage system (electric, hydraulic, mechanical) and associated components are key aspects in developing and defining concepts for a hybrid powertrain. This makes simulating the hybrid powertrain one of the focal aspects in developing hybrid commercial vehicles. Our efficient simulation tools enable us to find the optimum solution for the particular operating strategy and energy management system. This includes the hybrid manager for synchronizing combustion engine, electric motor (or alternative drive), transmission and powertrain, battery management as well as optimizing driving strategy (gear selection, load point, battery state of charge etc.).

A new development trend is found in hybridizing the entire tractor-semitrailer unit by using a conventionally powered road tractor, for example, to pull a trailer with electrified rear axle. In particular, this raises questions on controlling drive torque, e.g. in respect of safely transferring a driver’s requested torque to the trailer’s electric rear axle. As yet, no provision is made for signals of this type in today’s typical CAN communication under ISO 11992. IAV gives its clients support in adapting systems and validating functional safety.

Our capacities:

    • Hybrid powertrain test rigs
    • Prototype control units
    • HiL test rigs
    • Battery simulators
    • Overall vehicle simulation: longitudinal and lateral dynamics (for on and off-highway applications)
    • Developing e-machines and vehicle electrical systems
    • Functional safety