Hot shake
A test stand in which the aging of components is simulated under the influence of vibrations and temperatures is called a hot shake or hot shaker .
The purpose of this numerical environmental simulation is to map the natural aging of the component to be tested, taking into account the actual environmental influences and forces that occur. The test stand consists of hydraulic or electrodynamic vibration test systems and hot gas generators.
The components to be tested, e.g. B. Diesel particulate filters or catalytic converters are attached to the vibration test system for testing. If possible, this should be done in accordance with the original installation condition, as B. is present in a car. This simulates the frequencies and accelerations that are caused by the engine itself and the road influences that occur while driving. The part to be tested, for example the catalytic converter, is additionally fired by hot gas according to engine-specific criteria that are calculated from the volume flows and temperatures .