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1. (WO2011161407) A TRANSMISSION UNIT FOR TRANSMITTING DRIVE FROM AN ENGINE TO AN ENGINE ANCILLARY

Pub. No.:    WO/2011/161407    International Application No.:    PCT/GB2011/000935
Publication Date: Dec 29, 2011 International Filing Date: Jun 21, 2011
IPC: F02B 67/06
F16H 3/54
Applicants: ANTONOV AUTOMOTIVE TECHNOLOGIES LTD
HUGHES, Steven, Wynne
Inventors: HUGHES, Steven, Wynne
Title: A TRANSMISSION UNIT FOR TRANSMITTING DRIVE FROM AN ENGINE TO AN ENGINE ANCILLARY
Abstract:
The present invention relates to a transmission unit (10) for transmitting drive from an engine to an engine ancillary. The transmission unit (10) comprises an input shaft (20) arranged to receive drive from the engine and an output shaft (30) for outputting drive to the engine ancillary. An epicyclic arrangement of gears (40) comprising a sun gear (315), annulus gear (310), planet gear (300) and planet carrier (305) operable to transmit drive for at least two different transmission ratios between the input shaft (20) and the output shaft (30) is also provided. The transmission unit (10) has a one-way clutch (195) acting between the input shaft (20) and the output shaft (30) and arranged to prevent the output shaft (30) from rotating slower than the input shaft (20) and a braking mechanism (50) arranged to selectively brake one of the epicyclic arrangement of gears (40) to change between the at least two different transmission ratios.