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Exhaust Emission Characteristics of Excavator With 6.0 Liter Diesel Engine in Real Work Conditions

[+] Author Affiliations
Sangil Kwon

National Institute of Environmental Research, Incheon, South Korea

Sung-Woo Kim, Ki-Ho Kim

Korea Petroleum Quality & Distribution Authority, Cheongwon, South Korea

Youngho Seo

Korea Automotive Technology Institute, Cheonan, South Korea

Mun Soo Chon

Korea National University of Transportation, Chungju, South Korea

Daesik Kim

Gangneung Wonju National University, Wonju, South Korea

Sungwook Park

Hanyang University, Seoul, South Korea

Hyun Gu Roh

Induk University, Seoul, South Korea

Hyun Kyu Suh

Kongju National University, Cheonan, South Korea

Suhan Park

Chonnam National University, Gwangju, South Korea

Paper No. ICEF2018-9777, pp. V002T04A006; 6 pages
  • ASME 2018 Internal Combustion Engine Division Fall Technical Conference
  • Volume 2: Emissions Control Systems; Instrumentation, Controls, and Hybrids; Numerical Simulation; Engine Design and Mechanical Development
  • San Diego, California, USA, November 4–7, 2018
  • Conference Sponsors: Internal Combustion Engine Division
  • ISBN: 978-0-7918-5199-9
  • Copyright © 2018 by ASME


The purpose of this study is evaluate emission characteristics, such as nitrogen oxides (NOx), hydrocarbon, carbon monoxide, and particulate matter (PM), of excavator with Tier-4f level diesel engine in the real work conditions. The test excavator has an engine power of 124 kW at an engine speed of 1800rpm, and it has various after-treatment devices, such as exhaust gas recirculation (EGR), selective catalytic reduction (SCR), and diesel oxidation catalyst (DOC), to reduce the engine-out emissions. The emissions including carbon monoxide (CO), carbon dioxides (CO2), and NOx, were measured by portable emission measurement system (PEMS). The PEMS device conducted a correlation analysis with the emission bench on the engine dynamometer before being used to measure the real-work to confirm the reliability of the equipment. The tests were carried out in four categories: idling, driving, excavations and flattening.

It revealed that the average power output for each operation mode was higher in the order of flattening, excavation, and drive. On average, those are higher than that for the non-road transient cycle (NRTC) certification mode as 1.5 to 1.9 times. It may be determined that the power output is higher in conditions where there are more boom and bucket movements than the movement of the vehicle itself. In emission analysis, NOx and HC emission in driving mode are higher than other two modes: excavation and flattening. The real time NOx have been low in most test conditions, but large quantities of NOx have been released due to the deactivation of the SCR catalyst during cold start period or immediately after the non-working.

Copyright © 2018 by ASME



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