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http://dx.doi.org/10.3795/KSME-B.2004.28.10.1147

Air Fuel Ratio and Calculation According to Fuel Composition (III) -Comparison of Various Calculation Method-  

Park Chanjun (서울산업대학교 기계공학과)
Ohm Inyong (서울산업대학교 기계공학과)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.28, no.10, 2004 , pp. 1147-1154 More about this Journal
Abstract
This paper is the third of several companion papers which compare the method of Air-Fuel ratio determination. In the previous works, Eltinge chart was expanded to arbitrary fuel composition as a reference exhaust composition. The compensation of unburned hydrocarbon in Eltinge chart and comparison of Spindt and Eltinge method were also discussed. In addition to Eltinge and Spindt's one, however, there are many methods which calculate Air-Fuel ratio from exhaust emission. Among these methods, carbon balance and oxygen balance are widely used in practice. In some applications, linear formula from statistical method is being used in the field due to its simplicity and convenience. In this paper, these various methods are evaluated and compared with Eltinge results and new linear formula is proposed for the gasoline fuel. The results show that the corrected carbon balance equation has excellent agreement with Eltinge and Spindt's one. On the other hands, the oxygen-balanced formula has a limitation according to the mixture state and AFR. For gasoline fuel, newly proposed linear equation has good compatibility with Eltinge and Spindt up to AFR 17.
Keywords
Air-Fuel Ratio; Exhaust Gas; Eltinge Chart; Carbon Balance; Oxygen Balance;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
연도 인용수 순위
1 Lamont Eltinge, 1968 'Fuel-Air Ratio and Distribution from Exhaust Gas Composition,' SAE Paper 680114
2 Inyong Ohm and Chanjun Park, 2003, 'Determination of Air Fuel Ratio According to Fuel Composition(I) -Eltinge Chart as a Reference Exhaust Composition,' Transactions of the KSME(B), Vol. 27, No. 11, pp. 1548-1562   과학기술학회마을
3 Inyong Ohm and Chanjun Park, 2003, 'Determination of Air Fuel Ratio According to Fuel Composition(II) -Compensation of Unburned Gas Concentration in Eltinge Chart,' Transactions of the KSME(B), Vol. 27, No. 11, pp. 1563-1571   과학기술학회마을
4 Donald L. Stivender, 1971, 'Development of a Fuel-Based Mass Emission Measurement,' SAE paper 710604
5 John B. Heywood, 1988, 'Internal Combustion Engine Fundamentals,' McGraw-Hill, New York. p. 151
6 Ono Sokki Ltd, 1985, 'Operating Manual for Engine Test System,' Ono Sokki Ltd, Tokyo