Method and apparatus for the compensation of the thermal volume expansion in a coolant circuit of a liquid-cooled internal combustion engine

摘要

A method for the compensation of the thermal volume expansion in a coolant circuit (1) of a liquid-cooled internal combustion engine (2), with an equalizing tank (9), which a sensor device (16) for detecting the coolant - filling level in the equalizing reservoir (9) is associated, wherein the of the sensor device (16) detected in the filling level - a control and regulating device (17) is supplied to the fill level, as a function of this detected by a compensation device (19) controls such that, by means of these in such a way a predetermined amount of coolant from the coolant circuit (1) is filtered off with suction or in the coolant circuit (1) is metered in that the coolant - filling level (11) in the equalizing reservoir (9) assumes a predetermined height value.