Coolant circuit operating process for vehicle engine with heat store

摘要

The coolant circuit operating process includes a circulation pump (8) usable with the engine (2) stopped. After the engine has stopped, the coolant continues to be circulated through the engine and heat store (6) by the pump until the coolant temperature in the exit region (12a) from the engine is higher than the coolant temperature in the exit region (12b) from the heat store. In the case of a latent heat store, circulation should continue until the coolant temperature in the exit region from the heat store is 3-7 deg higher than the phase transition temperature of the storage material.