Turbocharger with an annular rotary bypass valve

A turbocharger includes an annular bypass passage with an annular bypass valve disposed therein. The bypass valve includes a fixed annular valve seat and a rotary annular valve member disposed against the valve seat. The valve member is rotatable about the axis for varying a degree of alignment betw...

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Bibliographische Detailangaben
Hauptverfasser:	Lombard Alain, Bribant Valerie, Costeux Antoine
Format:	Patent
Sprache:	eng
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CONTROLLING COMBUSTION ENGINES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS ENGINE PLANTS IN GENERAL GAS-TURBINE PLANTS 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 INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 INTERNAL-COMBUSTION PISTON ENGINES LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES STEAM ENGINES TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	A turbocharger includes an annular bypass passage with an annular bypass valve disposed therein. The bypass valve includes a fixed annular valve seat and a rotary annular valve member disposed against the valve seat. The valve member is rotatable about the axis for varying a degree of alignment between orifices in the valve seat and valve member so as to form flow passages having a flow area A for exhaust gas. The orifices are shaped to provide a first phase of evolution of the flow area A from zero up to a value A1 and then a second phase of evolution from the value A1 up to a value A2, and such that the first and second phases have distinctly different slopes on a curve of flow area versus rotational position of the valve member, with a distinct break point in the curve between the first and second phases.