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Influence of failures of natural gas engine sensors on engine's performance and emission(PDF)

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

Issue:
2010年02期
Page:
96-100
Research Field:
Publishing date:
2010-04-20

Info

Title:
Influence of failures of natural gas engine sensors on engine's performance and emission
Author(s):
YUAN Hua-zhi;  JIAN Xiao-ping;  ZHANG Chun-hua;  HAN You-xu
School of Automobile, Chang'an University, Xi'an 710064, Shaanxi, China
Keywords:
automobile engineering;  CNG engine;  performance test;  failure simulation
PACS:
U467.2; U473.19
DOI:
-
Abstract:
In order to solve the problem that it is difficult to diagnose the failures of natural gas engine, this paper conducted some simulation experiments on failure of some main sensors of an electronically controlled engine on a testing plate of electronically controlled PETROL/CNG engine, and analyzed the influence of failures of the intake pressure sensors and oxygen sensors on engine's power output, fuel economical performance and emission. The results show that the wastage of the gas descends, the power output of the engine descends, the consumption of the gas changs little, the emission of CO decreases, the emission of HC increases, and the emission of NOx decreases after the loss of the intake pressure sensor signal; the wastage of gas descends, the power output of the engine descends, the consumption of the gas changes little, the emission of CO decreases, the emission of HC changes a little, and the emission of NOx decreases after the intake oxygen sensor signal. 15 figs, 8 refs.

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Memo

Memo:
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Last Update: 2010-04-20