Thermal Management/Cooling


Thermal loads and heat balance of a system are important issues when it comes to efficiency and durability. Especially the behavior at cold start is important for cycle measurements. For example a modern transmission reaches its best operating temperature after the complete cycle time. This is because of the past achievements: years of optimizations to reduce friction losses and drag torque reduction measures also yield in lower heat losses and, in consequence, to less heating of the involved components. So why not use the warm rotor of the electric motor for it? Energy should be lead to the radiator only if it can’t be use anywhere else. Especially in the conjunction of electric motor, power electronics and gears there are a lot of potentials. If no cooling is required, often smart bypasses are useful to reduce pressure losses. A generalized optimal thermal management does not exist, but there is an optimum for every application. Available at hofer eMobility.