CNG: An alternative fuel for public transport

Abstract

<smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="City" downloadurl="http://www.5iamas-microsoft-com:office:smarttags"><smarttagtype namespaceuri="urn:schemas-microsoft-com:office:smarttags" name="place" downloadurl="http://www.5iantlavalamp.com/"> Paper presents a case study of Delhi on the impact of using compressed natural gas (CNG) in reducing exhaust emissions. The total emissions of air pollutants such as carbon monoxide (CO), nitrogen oxides (NO_x) and particulates (PM) and hydrocarbons (HC) are estimated using vehicle-kilometers traveled, traffic and travel characteristics and emission factors of different fuel types used. Further, the impact of different fueling scenarios and interventions on air quality is assessed. The use of CNG fuel as an alternative to the conventional fuel in public transport and intermediate public transport vehicles benefits by reducing CO and PM emissions whilst increases HC and NO_x emissions. The reduction of PM emissions will go a long way in reducing the impacts on public health in general and respiratory and cardio-vascular system related health problems in particular. </smarttagtype></smarttagtype>