K-2003 Nitrogen Oxides Emission from Spark Ignition Engine During Cranking Process

Abstract

High concentration of nitrogen oxide is detected in the exhaust gas during the cranking process of internal combustion engines. In this paper, the mathematical model which estimates the generation of nitrogen oxides in the cranking process is developed. The calculated results show that the high concentration of nitrogen oxide has been obtained when the rotational speed of the engine is low. The experimental results can be explained by our mathematical model.