E3S Web of Conferences (Jan 2024)

Experimental study on the emission characteristic of a methanol engine based on transient cycle WHTC

  • Liu Jixu,
  • Wu Taoyang,
  • Wu Chunling,
  • Jing Xiaojun,
  • Liu Bin,
  • Yang Zhaoyu,
  • Liu Kang,
  • Guo Yachen

DOI
https://doi.org/10.1051/e3sconf/202452201010
Journal volume & issue
Vol. 522
p. 01010

Abstract

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The emission characteristics of regulated emissions and unregulated emissions were studied under the full loads and the cold/hot transient cycle (WHTC) on a six-cylinder, multi-point injection, and spark ignition methanol engine. The results show that the emissions of THC and CO for the methanol engine is at a high level without three-way catalyst (TWC) and the emission of NOX could be controlled at a lower level than 400 mg/kW·h with exhaust gas recirculation (EGR). The emissions of THC, CO and NOX are low with TWC, whose weighted results under WHTC could be kept at a lower level than the limits in China VI Standard. It is a technical difficulty to control the emissions of methanol (CH3OH) and formaldehyde (HCHO) for methanol engines, especially under the cold WHTC, there has a high risk for the emission of CH3OH exceeding the limit of standard.

Keywords