Experimental and simulation study on Fe-beta controlling of hydrocarbon emission during cold start of gasoline vehicle world light vehicle test cycle

Dandan Han, Yuanwang Deng, Jiaqiang E, Changling Feng and Yan Tan

Energy, 2023, vol. 277, issue C

Abstract: In order to address the extremely severe HC emissions during cold start of gasoline vehicles, a new HC trapping device was designed that can be installed in the aftertreatment system of the experimental gasoline vehicle in this study. This device has the same carrier as universal three-way catalytic converters (TWC), similar structure, and the HC trapping material was coated on the carrier of this device, the coating material used in this study was a new coating material, namely Fe-beta zeolite molecular sieve. Both vehicle experiments and molecular dynamics simulations were used in this study. The cold start experiments were carried out on the gasoline vehicle World Light Vehicle Test Cycle (WLTC). The experiments compared the differences in HC emissions from the exhaust gas of the gasoline vehicle with and without the HC trapping device. The experimental results showed that the installation of the HC trapping device significantly reduced HC emissions during the first 8 s of cold start, which was the worst phase of exhaust emissions from the gasoline vehicle. The peak value that occurred during this period was approximately tens of times greater than the peak value that occurred at later stages when HC emissions fluctuate. And the use of HC catcher resulted in a 62.34% reduction in the maximum peak value HC emissions. Then the molecular dynamics software Material studio was used to simulate the adsorption and diffusion of representative alkene molecules (butene, propene and ethene which measured from cold start test of experimental gasoline vehicle) on Fe-beta zeolite molecular sieves. The results showed that the adsorption effect was significant at low temperatures and the diffusion phenomenon was significant at high temperatures. When simulating the adsorption and diffusion of multi-component alkene molecules, there was a competitive relationship between various alkene molecules, which was greatly affected by the size of alkenes themselves. Ranking of the capture efficiency of three types of alkenes: butene > propene > ethene.

Keywords: Gasoline vehicle; WLTC; Cold start; HC emission; Fe-beta; Molecular simulation (search for similar items in EconPapers)
Date: 2023
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (3)

Downloads: (external link)
http://www.sciencedirect.com/science/article/pii/S0360544223011428
Full text for ScienceDirect subscribers only

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:277:y:2023:i:c:s0360544223011428

DOI: 10.1016/j.energy.2023.127748

Access Statistics for this article

Energy is currently edited by Henrik Lund and Mark J. Kaiser

More articles in Energy from Elsevier
Bibliographic data for series maintained by Catherine Liu ().