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Das, B. P.
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Performance Analysis of HCNG Fuel on Sequential Gas Injection Based Heavy Duty Engine

Indian Oil Corp. Ltd.-Sauhard Singh, Reji Mathai, A. K. Sehgal, R. Suresh, B. P. Das
Tata Motors Ltd.-Nishant Tyagi, Jaywant Mohite, N. B. Chougule
Published 2015-03-10 by SAE International in United States
Depletion of fossil fuel reserves, the unsteadiness of their prices and the increasingly stricter exhaust emission legislation put forward attention of world towards use of alternate fuels. The ever increasing demand for ecologically friendly vehicles can be met by use of clean fuels like Compressed Natural Gas (CNG) and Hydrogen (H2). Lower carbon to hydrogen ratio of CNG makes it a cleaner fuel, due to this CNG is gaining popularity as an internal combustion (IC) engine fuel in transport sector. Hydrogen fuel for IC engines is also being considered as a future fuel due to its simple carbon less structure. However, several obstacles have to be overcome before widespread utilization of hydrogen as an IC engine fuel can occur in the transport sector. The 18 percent hydrogen enriched CNG fuel referred to as HCNG has the potential to lower emissions and could be considered a first step towards promotion of a Hydrogen economy.This paper presents the optimization strategy for HCNG on 6-cylinder sequential gas injection based heavy duty CNG engine. The six cylinder engine was…
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Volatile Organic Compounds (VOCs) in Ambient Air - A Case Study at the Vicinity of Fuel Filling Stations in New Delhi, India

Indian Oil Corporation Limited-Neeraj Kumar, Prashant Kumar, M. Sithananthan, Reji Mathai, Ajay Kumar Sehgal, R. Suresh, B. P. Das
Published 2015-03-10 by SAE International in United States
Volatile Organic Compounds (VOCs) present in ambient air are potentially toxic among the air pollutants. They are present in the urban atmosphere due to both exhaust emissions from vehicles and evaporative emissions at fuel filling stations. The present study aims to provide an indication of ambient levels of benzene, a carcinogenic VOC in the immediate vicinity of petrol filling stations in Delhi & National Capital Region (NCR). The monitoring of benzene is conducted across the vicinity of petrol stations to ascertain the effect of outside pollutant concentration on forecourt area. Continuous monitoring of benzene was achieved by an air quality monitoring facility stationed across the selected locations at four selected fuel filling stations. It was observed that the average concentrations of benzene measured during the study ranged between 2.28 ppb - 9.43 ppb. The study also reveals few peaks in the benzene level during heavy traffic count and these values were higher than the limiting value of 1.56 ppb as prescribed by NAAQS (National Ambient Air Quality Standard) of India. The temporal variation in the…
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