초록

An apparatus and method for diagnosing an engine using a computer based model of the boost pressure of a turbo-charger.

대표청구항 ▼

An apparatus for modeling boost pressure of a turbocharger of an engine, the engine having an intake manifold, including: means for sensing turbocharger input temperature and responsively producing a turbocharger input temperature signal; means for sensing turbocharger input pressure and responsivel

An apparatus for modeling boost pressure of a turbocharger of an engine, the engine having an intake manifold, including: means for sensing turbocharger input temperature and responsively producing a turbocharger input temperature signal; means for sensing turbocharger input pressure and responsively producing an turbocharger input pressure signal; means for sensing intake manifold temperature and responsively producing an intake manifold temperature signal; and, means for receiving said turbocharger input temperature and pressure signals and said intake manifold temperature signal and responsively determining a modeled boost pressure value using a boost pressure polynomial function, said turbocharger input temperature and pressure signals and said intake manifold temperature signal being inputs to said boost pressure polynomial function.