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SYSTEM AND METHOD FOR MODELING OF TURBO-CHARGED ENGINES AND INDIRECT MEASUREMENT OF TURBINE AND WASTE-GATE FLOW AND TURBINE EFFICIENCY
SYSTEM AND METHOD FOR MODELING OF TURBO-CHARGED ENGINES AND INDIRECT MEASUREMENT OF TURBINE AND WASTE-GATE FLOW AND TURBINE EFFICIENCY
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机译:涡轮增压发动机建模及涡轮和废物流及涡轮效率间接测量的系统和方法
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摘要
A real-time system for modeling a turbo-charged engine includes a model configured to estimate various exhaust states such as turbine inlet pressure, turbine outlet pressure, turbine outlet temperature, turbine mass flow rate and waste-gate valve mass flow rate. The model is dependent only on the availability of normal operating values available in a conventionally-configured automotive controller and one or more measured intake side parameters such as ambient pressure, boost pressure, ambient temperature and compressor mass flow rate. The model is constructed to reflect a high-level application of energy conservation between the turbine (generated power) and compressor (absorbed power). A method for the indirect measurement of turbine and waste-gate flow uses turbine inlet and outlet pressure, inlet temperature and engine mass air flow rate measurements. A method for the indirect measurement of turbine efficiency avoids the need for manufacturer's turbine data.
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