Transactions of the Korean Society of Automotive Engineers (한국자동차공학회논문집)

The Korean Society of Automotive Engineers (한국자동차공학회)
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An Evaporative System Monitoring Method Using a Virtual HC Sensor

가상 HC 센서를 이용한 Evaporative System Monitoring 방법에 대한 연구

  • 서진호 (서울대학교 전기공학부) ;
  • 박재홍 (서울대학교 전기공학부) ;
  • 윤형진 (현대자동차 남양연구소)
  • Published : 2003.03.01
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Abstract

This paper presents a new evaporative system monitoring method using a virtual HC sensor for an automotive on-board diagnosis. A development was made at providing mathematical expressions from the lambda control information to estimate the HC mass flow purged into the intake manifold from the canister for implementing a virtual HC sensor. The change of the lambda averagevalue reflected the influence of the additional fuel from purging results the sensor estimation of the purged HC amount. Based on this virtual HC sensor, a new evaporative system monitoring method was proposed comparing the amount of purged HC amount with the amount of the HC gas evaporated from the fuel tank and absorbed into the canister. Finally, the method was validated with a simulation using the data logged from the retail car.

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References

  1. I. K. Yoo, D. Upadhyay, G. Rizzoni, 'A Control Oriented Carbon Canister Model,' SAE 1999-01-1103, 1999
  2. M. C. Sultan, M. D. Kushion, R. Wind, C. H. Folkerts, G. P. Matthews, 'Closed Loop Canister Purge Control System,' SAE 980206, 1998
  3. C. W. Vigild, K. P. H. Andersen, E. Hendrics, M. Struwe, 'Towards Robust H-infinity Control of an SI Engine's Air/Fuel Ratio,' SAE 1999-010854,1999
  4. S. F. Majkowski, K. M. Simpson, M. J. Steckler, 'Developement and Validation of a 0.020' Evaporative Leak Diagnostic System Utilizing Vacuum Decay Methods,' SAE 1999-01-0861, 1999
  5. M. J. Grieve, E. G. Himes, 'Advanced Canister Purge Algorithm with a Virtual 'HC' Sensor,' SAE 2000-01-0557, 2000
  6. State of California Air Resources Board, 'Guidance in Compliance with On-board Diag nosticsⅡ(OBD-Ⅱ) Requirements,' CARB Mail-out #95-20, May, 1995
  7. C. K. Kim, S. S. Park, 'On Experimental Study on On board Diagnosis of Leakage of Evaporative Emission Control System,' Spring Conference of KSAE, pp.100-105, 2002
  8. G. S. Cho, Y. J. Jung, H. K. Jin, 'Development of Carbon Canister for Refueling Vapor Recovery of Vehicle(In the Case of Analysis of Air Flow in the Canister),' Spring Conference of KSAE, pp.231-236, 2002
  9. Bosch, ME7 Application Guideline, 1997