Camshaft for an engine

A camshaft 101 for an engine comprises a first cam 103 to control a first cylinder valve and a second cam 105 to control a second cylinder valve of the same cylinder, the valves being both inlet valves or both outlet valves and the profiles (107, 109, figs 1b,1c) of the cams 103, 105 differing in sh...

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Bibliographische Detailangaben
Hauptverfasser:	Phil John Whiston, Neil Haynes
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION COMBUSTION ENGINES CONTROLLING COMBUSTION ENGINES CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES ENGINE PLANTS IN GENERAL 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 LIGHTING MACHINES OR ENGINES IN GENERAL MECHANICAL ENGINEERING 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 camshaft 101 for an engine comprises a first cam 103 to control a first cylinder valve and a second cam 105 to control a second cylinder valve of the same cylinder, the valves being both inlet valves or both outlet valves and the profiles (107, 109, figs 1b,1c) of the cams 103, 105 differing in shape, size or angular orientation. The cams 103, 105 may have different base circle diameters, overall heights, lobe angles, nose radii, dwell angles, opening ramps, closing ramps, opening flanks and/or closing flanks. The valves thus have different amounts of lift, different opening periods or different timings which may determine the swirl pattern. The first and second valves may differ in diameter. The first and second valves may be selectively deactivatable.