COOLING SYSTEM FOR A COMBUSTION ENGINE, COMBUSTION ENGINE AND MOTOR VEHICLE WITH A COMBUSTION ENGINE
A cooling system is provided for a combustion engine having at least one pressure sensor and a diaphragm. The diaphragm is impermeable to a coolant of the cooling system and in contact with the coolant on a first side. A sensor device of the at least one pressure sensor is arranged separated from the coolant on a second side of the diaphragm located opposite the first side and configured to determine a pressure of the coolant.
1 . A cooling system for a combustion engine, comprising:
a coolant;
a pressure sensor;
a diaphragm that is impermeable to the coolant and on a first side in contact with the coolant; and
a sensor device of the pressure sensor on a second side of the diaphragm located opposite the first side and arranged to separate from the coolant and configured to determine a pressure of the coolant.
2 . The cooling system according to claim 1 ,
wherein the diaphragm comprises a material with a melting temperature T S,M , and
wherein T S,M >approximately 150° C.
3 . The cooling system according to claim 2 , wherein the material comprises tantalum.
4 . The cooling system according to claim 2 , wherein the material comprises a tantalum alloy.
5 . The cooling system according to claim 2 , wherein the material comprises a hydrogenated acrylonitrile butadiene rubber.
6 . The cooling system according to claim 1 , wherein the sensor device comprises a semi-conductor pressure sensor chip.
7 . The cooling system according to claim 1 ,
wherein the pressure sensor further comprises a housing with an opening,
wherein the sensor device is arranged in the opening of the housing, and
wherein the diaphragm is configured to cover the opening.
8 . The cooling system according to claim 7 ,
wherein the housing comprises a material with a melting temperate T S,G , and
wherein T S,G >approximately 150° C.
9 . The cooling system according to claim 8 , wherein the material comprises a polyphenylene sulfide.
10 . The cooling system according to claim 8 , wherein the material comprises a polybutylene terephtalate.
11 . The cooling system according to claim 7 , wherein the diaphragm is connected to the housing with an adhesive.
12 . The cooling system according to claim 1 , wherein a fluid is located between the diaphragm and the sensor device.
13 . The cooling system according to claim 1 , wherein a characteristic curve of the sensor device is corrected for pressure dampening effects of the diaphragm.
14 . The cooling system according to claim 1 , wherein the pressure sensor is arranged in an expansion tank.
15 . The cooling system according to claim 1 , wherein the pressure sensor is arranged on an outlet side of a coolant pump.
16 . The cooling system according to claim 15 ,
wherein the coolant pump is configured to actuate by a control device, and
wherein the control device is operably connected with the pressure sensor.