Jigu Seo1, Seokjoo Kwon2, Sungwook Park This email address is being protected from spambots. You need JavaScript enabled to view it.3

Graduate School of Hanyang University, Seoul 04763, Korea
Korea Automotive Technology Institute, Chungnam 31214, Korea
School of Mechanical Engineering, Hanyang University, Seoul 04763, Korea


Received: October 29, 2019
Revised: January 18, 2020
Accepted: February 27, 2020

 Copyright The Author(s). This is an open access article distributed under the terms of the Creative Commons Attribution License (CC BY 4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are cited.

Download Citation: ||https://doi.org/10.4209/aaqr.2019.09.0440 

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Cite this article:

Seo, J., Kwon, S. and Park, S. (2020). Greenhouse Gas Emissions from Heavy Duty Natural Gas Vehicles in Korea. Aerosol Air Qual. Res. 20: 1418–1428. https://doi.org/10.4209/aaqr.2019.09.0440


  • GHG emissions from heavy-duty NGVs in Korea were assessed.
  • Heavy-duty NGVs emit 1.66 million tons of GHG annually in Korea.
  • One heavy-duty NGV emits 39.3 tons less GHG than a diesel HDV per year.
  • Simulation method with 40 vehicle models were used to calculate GHG emissions.


Since 1991, heavy-duty natural gas vehicles (NGVs) have been supplied as an alternative to heavy-duty diesel vehicles (HDVs) in Korea. This study calculated the emissions from 40 compressed natural gas (CNG) buses by using a backward-looking vehicle simulation model; based on these results, the total heavy-duty NGV GHG emissions in the country were estimated to be 1.66 million tons annually, which contributes 6.75% of the total national GHG emissions from HDVs. Compared to diesel HDVs in a similar weight class, heavy-duty NGVs emit 6.3% less GHG—or 39.3 tons less per vehicle annually—on average.

Keywords: Greenhouse gas reduction, Alternative fuel, Simulation method, Tank to wheel.

Aerosol Air Qual. Res. 20:1418-1428. https://doi.org/10.4209/aaqr.2019.09.0440 

Impact Factor: 2.735

5-Year Impact Factor: 2.827

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