Arrangement for power take-off on a two-shaft engine

Details Arrangement for power take-off on a two-shaft engine Arrangement for power take-off on a two-shaft engine

2007-08-22

2010-11-16

Pang, Roger (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

C477S041000, C477S090000, C074S66500G, C060S039162, C060S039163

Reexamination Certificate

active

07833126

ABSTRACT:
With a two-shaft engine, the accessory drive gearbox (5) for the operation of a generator and other auxiliaries (6) is connected to the high-pressure shaft (1) via a high-pressure shaft gearbox (3), which is coupled to a low-pressure shaft gearbox (8) connecting to the low-pressure shaft (7), via an overrunning clutch (11), a conical-pulley variable transmission (10) settable on the basis of the shaft speed on both sides, and a first switchable clutch (9). Under certain operating conditions with low speed of the high-pressure shaft or in case of engine failure, the power of the low-pressure shaft, with the clutch (9) engaged, is transferred to the high-pressure shaft gearbox and hence to the accessory drive gearbox via the conical-pulley variable transmission, which compensates for shaft speed difference, and the overrunning clutch, in order to reliably further operate the generator and other accessories with low fuel consumption or by windmilling only.

REFERENCES:
patent: 3514945 (1970-06-01), Austin
patent: 4064690 (1977-12-01), Kronogard
patent: 4118927 (1978-10-01), Kronogard
patent: 4326375 (1982-04-01), Kronogard
patent: 4776163 (1988-10-01), Brockmann
patent: 6855084 (2005-02-01), Sato et al.
patent: 2002/0189231 (2002-12-01), Franchet
patent: 2006/0034693 (2006-02-01), Lardellier
patent: 3602543 (1987-10-01), None
patent: 1270903 (2003-01-01), None
patent: 1541834 (2005-06-01), None
European Search Report dated Feb. 5, 2010 from counterpart European patent application.

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