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Potential of emission reduction of a turbo-charged non-road diesel engine without aftertreatment under multiple operating scenarios

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  • Feng, Renhua
  • Li, Guanghua
  • Sun, Zhengwei
  • Hu, Xiulin
  • Deng, Banglin
  • Fu, Jianqin

Abstract

In this study, the bench test of a non-road diesel engine was conducted under universal conditions, non-road steady-state cycle (NRSC) and non-road transient cycle (NRTC). To reduce the raw emissions of the tested non-road diesel engine, some improvement measures, such as pre-injection, smoke limit, and intake throttle degree control strategy, were applied to the optimized engine. The experiment results showed that particulate matter (PM) emissions are reduced significantly at medium-high speed and low load. The maximum and average proportion of PM emissions reduction at 0–30% load and 1400–2200 r/min are 68.4% and 47.5%, respectively. However, the optimized nitrogen oxide (NOx) emissions are higher than that of the original engine, particularly under low load working conditions. Nevertheless, at medium-high speed and load, NOx emissions of the optimized engine were reduced. PM and NOx emissions decreased by 12.3% and 2.4%, respectively, under NRSC. Under NRTC, PM and NOx emissions decreased by 5.2% and 5.5%, respectively. Unburned hydrocarbon (HC) and carbon monoxide (CO) were always maintained at extremely low emission levels. Furthermore, the fuel consumption almost remained constant under all operating conditions. Thus, this study demonstrates the emission reduction potential in non-road diesel engines without considerable payment.

Suggested Citation

  • Feng, Renhua & Li, Guanghua & Sun, Zhengwei & Hu, Xiulin & Deng, Banglin & Fu, Jianqin, 2023. "Potential of emission reduction of a turbo-charged non-road diesel engine without aftertreatment under multiple operating scenarios," Energy, Elsevier, vol. 263(PB).
    • Handle: RePEc:eee:energy:v:263:y:2023:i:pb:s0360544222027189
    DOI: 10.1016/j.energy.2022.125832
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    2. Duan, Xiongbo & Feng, Lining & Liu, Haibo & Jiang, Pengfei & Chen, Chao & Sun, Zhiqiang, 2023. "Experimental investigation on exhaust emissions of a heavy-duty vehicle powered by a methanol-fuelled spark ignition engine under world Harmonized Transient Cycle and actual on-road driving conditions," Energy, Elsevier, vol. 282(C).
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    5. Maciej Bajerlein & Wojciech Karpiuk & Rafał Smolec, 2022. "Application of Gas Dissolved in Fuel in the Aspect of a Hypocycloidal Pump Design," Energies, MDPI, vol. 15(23), pages 1-18, December.

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