A method for operating a liquid-cooled four - clock - internal combustion engine and four - clock - internal combustion engine for carrying out such a method

摘要

The invention relates to a method for operating a liquid-cooled four - clock - internal combustion engine (1) with– a cylinder block (1b) with at least one cylinder head (1a) is connected,– a first coolant circuit (2) comprising at least one coolant jacket (2a), whereby for the formation of a water cooling (2) a supply line (2b) for the supply of the at least one coolant jacket (2a) with serving as a coolant water is provided, and– a second coolant circuit (3) comprising at least one coolant jacket (3a), whereby for the formation of a cooling oil (3) a supply line (3b) for the supply of the at least one coolant jacket (3a) with the coolant oil is provided serving.It is intended to provide a method are to be indicated, with which the fluid cooling of the internal combustion engine (1) is improved.This is achieved with a method which is characterized in that in the case of falling below a first predetermined load t_{down, 1}– the water cooling (2) is deactivated, and– the internal combustion engine (1) with the use of the oil cooling (3) is liquid-cooled.