Title:
圧力及び電流が低下するインペラ
Document Type and Number:
Japanese Patent JP2009523215
Kind Code:
A
Abstract:
A secondary air system providing a regeneration air pump wherein the vanes of the impeller are tapered from a point along the length of the vane to the root of the vane inside the air pump. The tapered vanes create desirable flow characteristics. The tapered vanes create a non-linear flow versus pressure characteristic. Thus, the tapered vanes in combination with a divider that extends circumferentially around the impeller and through the vanes causes the flow to increase. This non-linear characteristic created by the tapered vanes allows the secondary air system to maintain suitable operation at lower flow and pressure levels. Due to the tapered feature on the impeller, a dead head pressure is obtained at a lower pressure. The impeller arrangement also provides overall pump efficiency improvements.
Inventors:
Todd Peterson
Advalille, ketan
Jaramillo, Ramon
Advalille, ketan
Jaramillo, Ramon
Application Number:
JP2008550386A
Publication Date:
June 18, 2009
Filing Date:
January 11, 2007
Export Citation:
Assignee:
Borg Warner Incorporated
International Classes:
F04D5/00
Domestic Patent References:
| JPS5443304A | 1979-04-05 | |||
| JPS5797097A | 1982-06-16 | |||
| JP2004257284A | 2004-09-16 | |||
| JPS5443304A | 1979-04-05 |
Foreign References:
| US5762469A | 1998-06-09 | |||
| US5527149A | 1996-06-18 |
Attorney, Agent or Firm:
Shinjiro Ono
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Yamazaki Kosaku
Kazuo Shamoto
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Yamazaki Kosaku