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Comparative analysis of real-world vehicular emissions from BS-IV and BS-VI cars in India.
Chowdappa, Chandrashekar; Boruah, Aishree; Chatterjee, Pritha; Pawar, Digvijay Sampatrao.
Afiliación
  • Chowdappa C; Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, India.
  • Boruah A; Department of Climate Change, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, India.
  • Chatterjee P; Department of Civil Engineering, Adjunct Faculty of Department of Climate Change, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, India.
  • Pawar DS; Department of Civil Engineering, Indian Institute of Technology Hyderabad, Kandi, Sangareddy, 502285, India. dspawar@ce.iith.ac.in.
Environ Monit Assess ; 196(8): 745, 2024 Jul 17.
Article en En | MEDLINE | ID: mdl-39017720
ABSTRACT
This study investigates real-world carbon dioxides (CO2) and nitrogen oxides (NOx) emissions from diesel (Bharat Stage-IV (BS-IV)) and petrol/gasoline (BS-IV and BS-VI) cars in Indian driving conditions using a portable emission measurement system (PEMS). The paired sample t-test revealed a significant difference ( p < 0.05) in NOx and CO2 emissions among the three types of cars, except for CO2 emissions ( p > 0.05) between BS-IV petrol and BS-VI petrol cars. The highest NOx emission rates were observed in all car types during acceleration (> 1 m/s2) and deceleration (- 2 m/s2). CO2 emission rates were also high during acceleration (> 1 m/s2) for all car types. At low speeds (around 20 kmph), all car types had low emissions of CO2 and NOx, with acceleration and deceleration rates ranging from - 0.5 to 0.5 m/s2. BS-IV diesel cars emit significantly higher NOx emissions compared to petrol cars, especially at vehicle-specific power (VSP) bin 0 (deceleration to idling mode) and during VSP bin 7 (acceleration mode). BS-IV diesel cars emit 228% and 530% higher NOx emissions than BS-IV and BS-VI petrol cars at VSP bins 0 and 7, respectively. CO2 emissions from BS-VI petrol cars were 10% lower than those from BS-IV petrol cars across all VSP bins, indicating moderate reductions. Furthermore, diesel cars emit 140% less CO2 emissions than petrol cars across various VSP bins. The findings highlight the need for cleaner technologies and responsible driving practices to address vehicular emission concerns.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Automóviles / Emisiones de Vehículos / Gasolina / Dióxido de Carbono / Monitoreo del Ambiente / Contaminantes Atmosféricos / Óxidos de Nitrógeno País/Región como asunto: Asia Idioma: En Revista: Environ Monit Assess Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Automóviles / Emisiones de Vehículos / Gasolina / Dióxido de Carbono / Monitoreo del Ambiente / Contaminantes Atmosféricos / Óxidos de Nitrógeno País/Región como asunto: Asia Idioma: En Revista: Environ Monit Assess Asunto de la revista: SAUDE AMBIENTAL Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Países Bajos