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Turbine inlet medium pressure determining method for supercharged heat engine, involves reading expansion rate value of turbine in table, and multiplying value by pressure in turbine outlet to determine medium pressure in turbine inlet
Turbine inlet medium pressure determining method for supercharged heat engine, involves reading expansion rate value of turbine in table, and multiplying value by pressure in turbine outlet to determine medium pressure in turbine inlet
The method involves estimating temperature (T3) of gas entering in a turbine, pressure (P4) of gas exiting from the turbine, mass flow (Qgb) of gas traversing the turbine and power (Pwc) developed by a compressor of a turbosupercharger. Adapted power and adapted flow with specific relations are determined from the estimated values. An expansion rate value of the turbine associated to values formed by the adapted power and flow is read in a data table. The expansion rate value is multiplied by the pressure (P4) in a turbine outlet to determine medium pressure (P3) in an inlet of the turbine.
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