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Patent Searching and Data


Title:
PUMP DRIVE CONTROL DEVICE
Document Type and Number:
Japanese Patent JP2009299480
Kind Code:
A
Abstract:

To provide a pump drive control device performing operation having high system efficiency in response to the actual pump performance.

The actual pump workload (power consumption) when constantly controlling the actual pump rotational speed is detected, and volumetric efficiency of a pump is calculated based on the detected actual pump power consumption and rotational speed. The calculated volumetric efficiency v is plotted on an operation management map M and a reference line l1 of the volumetric efficiency v is corrected, thereby acquiring the actual line l11. The actual pump operation is controlled using the acquired actual line l11. Thereby, it is possible to control the operation having the high system efficiency in comparison with the past example that a lower limit line l01 acquired when using the worst pump is always used, without taking into consideration the actual pump performance due to product variation.


Inventors:
KATANO GOJI
Application Number:
JP2008151487A
Publication Date:
December 24, 2009
Filing Date:
June 10, 2008
Export Citation:
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Assignee:
TOYOTA MOTOR CORP
International Classes:
F04B49/06; B60L11/18; H01M8/04; H01M8/10
Domestic Patent References:
JP2007184117A2007-07-19
JPH0719162A1995-01-20
JP2008059933A2008-03-13
JP2004241236A2004-08-26
JP2004127809A2004-04-22
JPH0672135A1994-03-15
JP2006134806A2006-05-25
JP2003081603A2003-03-19
Attorney, Agent or Firm:
Yoshiyuki Inaba
Shinji Oga
Toshifumi Onuki
Akihiko Eguchi