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Title:
METHOD FOR DETECTING PERFORMANCE OF AUXILIARY POWER UNIT
Document Type and Number:
Japanese Patent JP2013019413
Kind Code:
A
Abstract:

To provide a method for detecting performance of an auxiliary power unit APU.

The method includes: obtaining exhaust gas temperature EGT, air compressor inlet temperature LCIT, starting time STA, operating time TSR, and extraction pressure PT in the operation of the APU; comparing respectively a difference between EGT and LCIT or EGT-LCIT, STA, TSR and PT with respective threshold values; assigning weights to comparison results of the EGT-LCIT, STA, TSR and PT with the respective threshold values; and determining the performance of the APU based on comparison results of the weighted EGT-LCIT, STA, TSR and PT with the respective threshold values.


Inventors:
GU ZHUPING
WANG BINGZHENG
ZHENG FENGLIANG
MA HONGTAO
HUANG LEI
MAO HAOQUAN
Application Number:
JP2012000152982
Publication Date:
January 31, 2013
Filing Date:
July 06, 2012
Export Citation:
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Assignee:
AIR CHINA LTD
International Classes:
F01D25/00; B64D41/00; B64D45/00; F02C7/32; F02C9/00
Domestic Patent References:
JP2007538234A2007-12-27
JP2006063986A2006-03-09
JPS55119038A1980-09-12
Attorney, Agent or Firm:
Yoshiyuki Inaba
Toshifumi Onuki



 
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