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Techniques adopted to control emission (particularly NOx, HC, CO, PM) from CI engine using diesel/biodiesel as a fuel: A review

Gautam Kumar, Varun, Anoop Kumar

Many studies have reported that exhaust from biodiesel fuel has higher oxides of nitrogen, whereas hydrocarbon (HC) and smoke emission are significantly lower than that of diesel fuel. In diesel engines, NOx formation is a highly temperature-dependent phenomenon and takes place when the temperature in the combustion chamber exceeds 2000K. In this paper there are different types of technique discussed to control emission.