Low energy-cpnsuming load sensing truck cab suspension

Abstract: In the development of battery electric trucks is one of the main concerns how to minimize the energy consumption of all the different subsystems on the truck. One of these energyconsuming systems is the active cab suspension. The load sensing (active) cab systems used today is using pressurized air, pneumatics, to keep the cab at correct ride height. Currently is this pressurized air produced with a big, bulky and heavy compressor that continuously is running to compress air for multiple different subsystems. The alternative to the load sensing active cab suspension is to use non-load sensing (passive) suspension. This option is limiting the comfort and appearance of the cab but is neither using any energy. The goal of this master thesis is to find a suspension solution that is both load sensing and energy-efficient. To find a suitable load sensing solution was cab suspension system on other types of heavy machines inspected, together with suspension systems overall. There could be seen that the use of hydraulics gave the adjustability needed, without consuming any energy when the adjustments had been done. The system could also be very compact. It is easy to adapt the existing suspension components to work together with the hydraulic cylinders, and the hydraulic suspension systems have the possibility to be merged with other hydraulic systems on the truck.