TY - JOUR TI - Experimental study on exhaust gas after treatment using limestone AU - Sakhrieh Ahmad JN - Thermal Science PY - 2013 VL - 17 IS - 1 SP - 49 EP - 56 PT - Article AB - In this study a simple low-cost exhaust gas after-treatment filter using limestone was developed and tested on a four cylinder DI diesel engine coupled with dynamometer under variable engine running conditions. Limestone was placed in cast iron housing through which exhaust gases passes. The concentration of both carbon dioxide and nitrogen oxides were measured with and without the filter in place. It was found that both pollutants were decreased significantly when the filter is in place, with no increase in the fuel consumption rate.