| 摘要 |
Methods are provided for estimating an exhaust temperature of an engine exhaust of a turbocharged engine prior to an inlet of the turbine of the turbocharger. These methods estimate the pre-turbine exhaust temperature based on thermodynamic equations and measured temperature and pressure values from elsewhere in the system. The estimated pre-turbine exhaust temperature can be used for controlling the engine, for verification of the emissions control system, and can also be compared against actual measurements of the pre-turbine exhaust temperature to evaluate engine performance. The present invention also provides turbocharged engine systems including sensors to make the required measurements and logic configured to estimate the pre-turbine exhaust temperature.
|
