Pumps – Condition responsive control of drive transmission or pump... – Having condition responsive pumped fluid control
Reexamination Certificate
2006-05-23
2006-05-23
Tyler, Cheryl (Department: 3746)
Pumps
Condition responsive control of drive transmission or pump...
Having condition responsive pumped fluid control
C417S279000, C417S374000, C417S222100, C060S452000, C123S357000
Reexamination Certificate
active
07048515
ABSTRACT:
A fuel injection control unit, including an electronic governor and a controller for an engine performs control in a governor region based on an isochronous characteristic. A working machine controller receives a delivery pressure signal P and controls a regulator such that, when the delivery pressure of a hydraulic pump exceeds a predetermined pressure P1,the displacement of the hydraulic pump does not exceed a value decided in accordance with a preset pump absorption torque curve. The working machine controller controls the regulator such that, when the delivery pressure of the hydraulic pump2is not higher than the predetermined pressure P1,the displacement of the hydraulic pump is increased as the delivery pressure of the hydraulic pump lowers from the predetermined pressure P1.
REFERENCES:
patent: 3772884 (1973-11-01), Witt
patent: 3818883 (1974-06-01), Glassey
patent: 4077744 (1978-03-01), Pensa
patent: 4343276 (1982-08-01), Jaliwala et al.
patent: 4349744 (1982-09-01), Reuther et al.
patent: 4600364 (1986-07-01), Nakatani et al.
patent: 5267441 (1993-12-01), Devier et al.
patent: 5586869 (1996-12-01), Benckert et al.
patent: 6623247 (2003-09-01), Du
patent: 2003/0206805 (2003-11-01), Bishop et al.
patent: 51-109504 (1976-08-01), None
patent: 5-248401 (1993-09-01), None
patent: 7-83084 (1995-03-01), None
patent: 10-89111 (1998-04-01), None
patent: 10-159599 (1998-06-01), None
patent: 11-50868 (1999-02-01), None
Shimomura Hirokazu
Yasuda Tomohiko
Hitachi Construction Machinery Co. Ltd.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Sayoc Emmanuel
Tyler Cheryl
LandOfFree
Hydraulic drive system and method using a fuel injection... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic drive system and method using a fuel injection..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic drive system and method using a fuel injection... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3565695