Thermostat device for a cooling system and a cooling system comprising said thermostat device

A thermostat device for a cooling system comprising:

• at least one component configured to be cooled by a circulating coolant and the cooling system comprises a radiator in which the coolant is cooled;
• the thermostat device comprises a pilot chamber configured to receive coolant from a first position of the cooling system and comprises a thermostat chamber configured to receive coolant from a second position of the cooling system;
• a first outlet from the thermostat chamber and the first outlet is configured to direct coolant, via a bypass line, and past the radiator;
• a second outlet from the thermostat chamber and the second outlet is configured to direct coolant to the radiator;
• a movably arranged valve body located in the thermostat chamber and configured to distribute the coolant in the thermostat chamber to the first and second outlets in dependence on the position, of the valve body, wherein the valve body includes a stroke member;
• the pilot chamber comprises an outlet passage located and configured to direct coolant from the pilot chamber to the thermostat chamber;
• the thermostat device comprises a first sensor member arranged stationary in the thermostat device comprising a first thermal expansion element, the first thermal expansion element having a first phase changing temperature, located and configured to be in thermal contact with the coolant in the pilot chamber and the first thermal expansion element being connected to the valve body, configured and operable to provide a first stroke of the valve body to move the stroke member of the valve body in response to phase change of the first thermal expansion element due to a first temperature of the coolant in the pilot chamber;
• and
• a second sensor member connected to the stroke member comprising a second thermal expansion element that is movably arranged, the second thermal expansion element having a second phase changing temperature, located and configured to be in thermal contact with the coolant in the thermostat chamber and the second thermal expansion element being connected to the valve body, located, configured and operable to provide a second stroke of the valve body to move the valve body in response to phase change of the second thermal expansion element due to a second temperature of the coolant in the thermostat chamber such that the valve body is configured and movable to a position defined by both the first stroke from the first thermal expansion element and the second stroke from the second thermal expansion element, wherein the first phase changing temperature and the second phase changing temperature are different.