Determinants of PM and GHG emissions from natural gas-fueled auto-rickshaws in Delhi.

Author(s)
Reynolds, C.C.O. Kandlikar, M. & Badami, M.G.
Year
Abstract

Auto-rickshaws are important for-hire transport in many Asian cities. A survey conducted in Delhi, India of natural gas-fueled auto-rickshaws to determine activity factors, fuel consumption and air emissions used an observational inspection for oil residue in the tailpipe and visible smoke at engine start-up to classify vehicles as low- or high-PM emitters; this method was calibrated using chassis-dynamometer PM measurements. Delhi auto-rickshaws were found to travel approximately 150 km daily. Auto-rickshaws with 2-stroke engines had about 20% higher fuel consumption and CO2 emissions, and a much higher likelihood of being categorized as high-PM emitters, than those with 4-stroke engines. Within the group of 4-stroke vehicles, age was a highly significant predictor with older model years having a higher likelihood of being high-PM emitters. The results suggest that the observational procedure for visible smoke and oil could be used to rapidly identify potential PM ôsuper-emittersö for further testing. (A) Reprinted with permission from Elsevier.

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Publication

Library number
I E158619 /15 / ITRD E158619
Source

Transportation Research Part D. 2011 /03. 16(2) Pp160-165 (13 Refs.)

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