Even in modern hybrid or electric vehicles, heat is produced as a waste product, or heat and cold are required to supply the power electronics, the drive, the battery and also the passenger compartment with the optimum temperature in each case.
To coordinate these extensive tasks of the cooling system, an elaborate and complex thermal management system is required.
Due to the large number of tasks, a correspondingly large number of components are involved here. The difficulty is that various pressure drops occur at each component involved and in the piping system. However, in order to keep efficiency high, the cooling system is operated with the lowest possible system pressure, which in turn means that any pressure drop disrupts this system.
The thermal management of a vehicle is designed by means of complex CFD simulations. This design is based on manufacturer specifications for the individual components installed in the thermal management system, such as radiators, power electronics, motors and many more.
In order to be able to precisely examine all components and lines regarding their influence in the cooling system, DDM has developed a differential pressure sensor suitable for road tests.
The PV 2722 is compact, media resistant on both sides and temperature compensated, so that it can be used in the temperature range from -40°C to +125°C at almost any location in the vehicle and test bench.