Title:
ストレイン型アクチュエータを備えた直接作動式弁及びその作動方法
Document Type and Number:
Japanese Patent JP2010539379
Kind Code:
A
Abstract:
A method is provided for operating a directly actuated valve that comprises a strain-type actuator to actuate a valve member to travel between a closed position and an open position, the method comprising transmitting displacements from the strain-type actuator to the valve member, maintaining a compressive stress on the actuator that is greater than a predetermined minimum stress by applying a pre-load compressive stress and limiting to less than predetermined limits at least one of: (a) acceleration and deceleration of the valve member when moving between open positions and the closed position; and (b) velocity of said valve member immediately before contacting the valve seat.
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Inventors:
Manford david
Welch Alan
Tuschette Align
Hebbes mic
Wing Richard
Welch Alan
Tuschette Align
Hebbes mic
Wing Richard
Application Number:
JP2010525174A
Publication Date:
December 16, 2010
Filing Date:
September 19, 2008
Export Citation:
Assignee:
Westport Power Inc.
International Classes:
F02M51/06; F02M47/00; F02M47/04; F02M61/16; F02M63/00
Domestic Patent References:
| JP2002544424A | 2002-12-24 | |||
| JP2004522058A | 2004-07-22 | |||
| JP2002317725A | 2002-10-31 | |||
| JP2001140724A | 2001-05-22 | |||
| JP2007231770A | 2007-09-13 | |||
| JP2640701B2 | 1997-08-13 | |||
| JP2006144733A | 2006-06-08 | |||
| JP2005307936A | 2005-11-04 | |||
| JP2009503351A | 2009-01-29 |
Foreign References:
| WO2007014793A1 | 2007-02-08 |
Attorney, Agent or Firm:
Koichi Tsujii
Sadao Kumakura
Disciple Maru Ken
Ino Sato
Mitsuru Matsushita
Ichiro Kurasawa
Fumitaka Tamaki
Sadao Kumakura
Disciple Maru Ken
Ino Sato
Mitsuru Matsushita
Ichiro Kurasawa
Fumitaka Tamaki