Paper Title:
Study of Air-Fuel Ratio Analyzer Based on CAN Bus
  Abstract

Air-Fuel Radio (AFR) analyzer technology is basically mastered by monopolies of developed country nowadays. Due to the lack of development in China, it has a strong practical value to study the accurate, rapid response and portable air-fuel ratio analyzer. This article is based on the AFR calculation model microcomputer hardware and software system design, background monitoring software design and debugging and measurement system, and on the choice of universal oxygen sensor calibration laboratory, establishing a wide-range of oxygen sensor output voltage and AFR model. The main features of AFR analyzer are measurement and display of air-fuel ratio, excess air coefficient or oxygen content, via RS232 communication with host computer or via Control Area Network (CAN) bus and vehicle ECU communication function. Test results showed that the error can be controlled at ± 0.03 λ range when comparing the Analyzer measurement values to calculated values. Compared with American Innovate company LM-2 air-fuel ratio analyser, the maximum relative error measured is ±0.08 when exhaust flood or too dilute, the average measurement error is ±0.04 while λ is between 0.8 and 1.3.

  Info
Periodical
Edited by
Ran Chen
Pages
946-950
DOI
10.4028/www.scientific.net/AMM.44-47.946
Citation
W. B. Wu, T. S. Hong, J. X. Guo, X. M. Liu, X. M. Guo, S. H. Wu, "Study of Air-Fuel Ratio Analyzer Based on CAN Bus", Applied Mechanics and Materials, Vols. 44-47, pp. 946-950, 2011
Online since
December 2010
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Yu Hong Bu
Abstract:Air fuel ratio is a key index affecting power performance and fuel economy and exhaust emissions of the gasoline engine, whose accurate model...
755
Authors: Dong Liang Wang, Min Wan, Huan You Pan
Session 1: Materials for Environmental Protection and Energy Application
Abstract:The time delay between the changed quantity of the injected fuel and the detection of the resulting change of the air-fuel ratio determines...
150
Authors: Yue Li, En Zhe Song, Zhan Hu Zhang, Guo Feng Zhao, Shuai Huang
Chapter 3: Mechatronics, Control Systems and Robotics
Abstract:The air-fuel ratio (AFR) control becomes an important research direction in gas engine. This article conducts air-fuel ratio (AFR) closed...
372