Efficiency drives varied transmissions
Article Abstract:
An overview of developments in the gearbox and transmissions industries is presented.
Publication Name: Eureka
Subject: Engineering and manufacturing industries
ISSN: 0261-2097
Year: 2000
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Double cycloid reduces power at speed
Article Abstract:
Gearboxes with on cycloid within another have been developed, achieving major speed reductions. They have low inertias and efficiencies of over 80%. A central shaft drives a conventional gear within a larger ring gear, to which is attached a further conventional gear with peripheral teeth. It has the effect of making the inner ring gear rotate in the same way as in the input shaft, although by a smaller amount. Tests on a brushless motor detected a slight vibration but with no backlash.
Publication Name: Eureka
Subject: Engineering and manufacturing industries
ISSN: 0261-2097
Year: 1997
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Combined system varies ratios with efficiency: a continuously variable transmission system devised for tanks may have a future in motor sport
Article Abstract:
A system that combines hydrostatic and mechanical gearbox concepts has been tested on a Chieftain tank, but the developers believe it has potential for use in racing cars. The system uses a conventional gearbox, with gaps between ratios bridged by a hydro-static transmission. There is a conventional output shaft, driven through a clutch, and a variable displacement hydraulic pump. The system features an epicyclic gearbox in between the output shaft and the gearbox. The hydraulic system is used to reduce and increase the input shaft speed.
Publication Name: Eureka
Subject: Engineering and manufacturing industries
ISSN: 0261-2097
Year: 1997
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Comment about this article or add new information about this topic:
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