Automatic cooling system for combustion engine

A cooling system for a combustion engine, comprising:

• an engine coolant circuit having an engine coolant circuit inlet and an engine circuit coolant circuit outlet;
• a radiator having a radiator inlet and a radiator outlet;
• a first pipeline hydraulically connects the radiator outlet and the engine coolant circuit inlet;
• a second pipeline hydraulically connects the engine coolant circuit outlet and radiator inlet;
• a coolant pump located in the first pipeline or the second pipeline and configured to pump a coolant to the engine coolant circuit inlet, and
• a stirling heat engine driven by thermal energy from a temperature difference between the combustion engine and the radiator,
• the stirling heat engine either comprising a cooler located adjacent to the radiator or comprising a cooler located in close proximity to the radiator such that a cooling medium flow through the radiator directly cools the cooler of the stirling engine,
• wherein the stirling engine drives the coolant pump to circulate the coolant between the engine and the radiator;
• wherein if the temperature difference between the combustion engine and the radiator is high, the stirling engine automatically drives the coolant pump and circulates the coolant at high speed, and
• wherein if the temperature difference between the combustion engine and the radiator is low, the stirling engine automatically drives the coolant pump and circulates the coolant at low speed, until the temperature difference between the engine and radiator is within a threshold point.