Thermal Key Off & Soak

Thermal Key Off & Soak

One of the biggest concerns for thermal engineers is how to manage thermal transients after the vehicle has stopped running, a situation referred to as “keyoff” and “soak” conditions. During the key-off and soak, the underhood surface temperatures usually increase since there is little or no cooling airflow (unlike while the vehicle is operating). The impact of rising surface temperatures increases the risk of underhood component damage, part failures and even fires.  
 
Exa PowerFLOW® simulations enable thermal engineers to accurately predict a vehicle’s underhood temperature during key-off and soak early in the design cycle, when design changes are more easily accommodated and long before physical prototypes are built. These simulations, coupled with the ability to visualize the flow and component temperatures, help thermal engineers gain insight on how to improve the vehicle design and propose and analyze new designs cheaper and faster.
Accurately predict thermal key-off and soak behavior
Evaluate thermal efficiency early in the design process
Better engineered vehicles reduce warranty and recall expenses
How to Keep Your Vehicle Brain Cool and Avoid Getting Stuck on a Hot Summer Day
Exa and ThermoAnalytics team to discuss automotive soak simulations
Overview highlighting the challenges of thermal soak conditions and benefits of simulation
See how Exa can address complex vehicle thermal soak conditions once the engine is turned off

Additional Resources

THERMAL PAPER PUBLICATIONS FEATURING EXA SIMULATIONS: