Power plants – Pressure fluid source and motor – Condition responsive control of or by input to input pump...
Reexamination Certificate
2005-11-11
2009-06-09
Leslie, Michael (Department: 3745)
Power plants
Pressure fluid source and motor
Condition responsive control of or by input to input pump...
C060S449000
Reexamination Certificate
active
07543447
ABSTRACT:
A traveling working vehicle maintains fuel economy while ensuring a sufficient work rate in heavy-load work.A torque control regulator26controls the absorption torque of a hydraulic pump22to ensure that it does not exceed a preset maximum absorption torque, and an accelerator pedal12commands a target revolution speed of an engine1. Revolution speed deviation computing sections52and62, a modification torque computing section53, a modification revolution speed computing section63, speed ratio computing sections54and64, traveling state determining sections55and65, and working state determining sections56and66determine an operating state of the traveling working vehicle. Both the pump base torque of the hydraulic pump22and the target revolution speed of the engine1are modified depending on the determination result of the state determining sections.
REFERENCES:
patent: 5155996 (1992-10-01), Tatsumi et al.
patent: 6183210 (2001-02-01), Nakamura
patent: 404 540 (1990-12-01), None
patent: 945 619 (1999-09-01), None
patent: 1 260 716 (2002-11-01), None
patent: 7-119506 (1995-05-01), None
patent: 7-103593 (1995-11-01), None
patent: 8-151658 (1996-06-01), None
patent: 2968668 (1999-08-01), None
patent: 2000-073812 (2000-07-01), None
patent: 2004-190582 (2004-07-01), None
patent: 2005-054414 (2005-03-01), None
patent: 2005-180259 (2005-07-01), None
Itoga Kentaro
Nakamura Kazunori
Nakamura Tsuyoshi
Yabuuchi Motoyuki
Hitachi Construction Machinery Co. Ltd.
Leslie Michael
Mattingly & Malur, P.C.
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