Variable center pivot tumble control valve geometry for an intake manifold

A tumble control valve (10) for an intake manifold (12) of an engine which eliminates or substantially reduces air leakage between the bottom (28b) and sides (28c) of the valve blade (28) through a selected rotational segment (50) of the blade (28) as it moves from the closed position (FC) toward th...

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Bibliographische Detailangaben
Hauptverfasser:	JERMY, IAN R, CONFER, KEITH A, PEFFLEY, THOMAS R
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES COMBUSTION ENGINES IN GENERAL CONTROLLING COMBUSTION ENGINES 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 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 tumble control valve (10) for an intake manifold (12) of an engine which eliminates or substantially reduces air leakage between the bottom (28b) and sides (28c) of the valve blade (28) through a selected rotational segment (50) of the blade (28) as it moves from the closed position (FC) toward the open position (FO). The sealed area (SA) is maintained by contouring the inner cavity (26) wall to track the arc defined by the bottom edge (28b) of the rotating blade (28). In other embodiments, a flexible flange (30) or wedge-shaped element (34) is attached to the blade to engage the inner cavity wall (28b) through the selected rotational segment (50). In another aspect of the invention, air flow pressure is maintained and tumble is optimized compared to rotational movement of the blade by contouring the top wall surface (24a) to track the arc defined by the rotating upper edge (28a) of the blade (28).