Title:
DIAGNOSIS METHOD AND DIAGNOSIS DEVICE FOR SRC EXHAUST GAS AFTERTREATMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/218533
Kind Code:
A1
Abstract:
A diagnostic method and a diagnostic device of an SRC exhaust gas aftertreatment system. The diagnostic method comprises the following steps: receiving a test command; parsing the acquired test command; sending, according to a test item, an excitation signal and a power signal respectively to a signal channel and a power supply channel of the exhaust gas aftertreatment system to be tested, so that the SCR exhaust gas aftertreatment system can respond after having received the excitation signal and the power signal and returns a responsive electrical signal; receiving the electrical signal returned by the SCR exhaust gas aftertreatment system; and analyzing the returned electrical signal by means of the fuzzy algorithm, thereby determining whether the SCR exhaust gas aftertreatment system fails. The diagnosis method for the SRC exhaust gas aftertreatment system can accurately determine a fault of the SCR exhaust gas aftertreatment system and provide a fault solution.
Inventors:
YAO YONG (CN)
CHANG YANLONG (CN)
CHANG YANLONG (CN)
Application Number:
PCT/CN2017/086671
Publication Date:
December 06, 2018
Filing Date:
May 31, 2017
Export Citation:
Assignee:
SHENZHEN FCAR TECH CO LTD (CN)
International Classes:
G05B23/02; G01M15/10; G01M17/007
Domestic Patent References:
| WO2005034047A1 | 2005-04-14 |
Foreign References:
| CN103091112A | 2013-05-08 | |||
| CN104834302A | 2015-08-12 | |||
| CN203083829U | 2013-07-24 | |||
| CN105511453A | 2016-04-20 | |||
| CN201852706U | 2011-06-01 |
Attorney, Agent or Firm:
SHENZHEN KEGUAN INTELLECTUAL PROPERTY AGENCY CO., LTD (CN)
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