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A Study on Cyclic Variation by Idling in Gasoline Vehicle  

Han, Sung-Bin (Department of Mechanical & Automotive Engineering, Induk University)
Kim, Sung-Mo (Service Quality Information Team, Hyundai Motor Company)
Publication Information
Journal of Energy Engineering / v.18, no.3, 2009 , pp. 156-162 More about this Journal
Abstract
Cylinder-pressure based combustion analysis provides a mechanism through which a combustion researcher can understand the combustion process. This paper was to identify the most significant sources of cycle-to-cycle combustion variability in a spark ignition engine at idle. To analyse the cyclic variation in the test engine, the burn parameters are determined on a cycle-to-cycle basis through analysis of the engine pressure data. The burn rate analysis program was used in the analysis of the data. Burn parameters were used to determine the variations in the input parameter-i.e., fuel, air, residual mass, and so on.
Keywords
Mean Effective Pressure; Combustion Stability; Spark Timing; Coefficient of Variation;
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