Method and device for controlling the coolant flow in an internal combustion engine

摘要

The method involves using a coolant pump (11) with a reversible pumping direction and controling the pump in a selected engine operating region so that the coolant volume between the coolant inlet (24) and outlet (14) is alternately pumped in and out of the internal combustion engine (10). AN Independent claim is also included for the following: an arrangement for regulating coolant volume in internal combustion engine.