Method of estimating the boost capability of a turbocharged internal combustion engine

A method of estimating a boost pressure of a turbocharged internal combustion engine (110) is disclosed. A throttle body temperature is estimated as a function of engine operating parameters. An intake air mass flow and an exhaust mass flow are estimated as a function of the throttle body temperatur...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	MARTIN MIERTSCHINK, JOERG BERNARDS, ALEXANDER KLEIN
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CALCULATING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL COMPUTING CONTROLLING COMBUSTION ENGINES COUNTING ELECTRIC DIGITAL DATA PROCESSING GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MECHANICAL ENGINEERING PHYSICS SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A method of estimating a boost pressure of a turbocharged internal combustion engine (110) is disclosed. A throttle body temperature is estimated as a function of engine operating parameters. An intake air mass flow and an exhaust mass flow are estimated as a function of the throttle body temperature. A turbine inlet pressure and a turbine outlet pressure are estimated as a function of engine operating parameters. A turbine speed is estimated as a function of the intake air mass flow, exhaust mass flow and turbine inlet and outlet pressure. The boost pressure is estimated as a function of the turbine speed. Estimation of the maximum boost pressure of the turbocharged internal combustion engine (110) is performed method cyclically as follows: estimating (S500) a throttle (330) temperature, estimating (S510) an air mass flow and an exhaust mass flow, estimating (S520) a turbine (250) inlet pressure and a turbine outlet pressure, estimating (S530) a turbine (250) speed, and estimating (S540) the maximum boost pressure.