Laser cleaning of carbonaceous deposits on combustion engine components

Yingchun Guan, Chih-Hsing Liu, Gnian Cher Lim, Minghui Hong, Hongyu Zheng

Research output: Contribution to conferencePaper

Abstract

Stubborn carbonaceous deposits on combustion engine components are known to reduce engine durability and performance. The deposits are extremely hard and difficult to remove. Laser cleaning technique may potentially be used to remove these deposits during engine remanufactur-ing but is rarely reported. In the present work, we demon-strated the feasibility of using a nano-second pulse width and high peak power laser with homogenised beam profile at 1064 nm wavelength to completely remove carbon de-posits from steel and aluminium pistons. This one-step pro-cess without use of chemicals or any other additives is en-vironmentally friendly and may be carried out with high efficiency in open air. Surfaces before and after laser clean-ing were examined using FTIR, XPS, and SEM/EDS to identify changes in chemical analysis, morphology as well as microstructure. Cross-sectional examination of the laser cleaned regions was further investigated to reveal any heat affected zone. Some thermal melting and removal of base materials were found to occur but could be minimized with optimized process parameters. Numerical analysis of ther-mal effect involved in laser cleaning was further carried out by finite element analysis (FEA) using ANSYS.

Original languageEnglish
Pages436-442
Number of pages7
Publication statusPublished - 2013 Dec 1
Event32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013 - Miami, FL, United States
Duration: 2013 Oct 62013 Oct 10

Other

Other32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013
CountryUnited States
CityMiami, FL
Period13-10-0613-10-10

Fingerprint

Cleaning
Deposits
Engines
Lasers
Steel
Heat affected zone
Aluminum
Pistons
Numerical analysis
Energy dispersive spectroscopy
Laser pulses
Melting
Durability
Carbon
X ray photoelectron spectroscopy
Finite element method
Wavelength
Microstructure
Scanning electron microscopy
Air

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

Cite this

Guan, Y., Liu, C-H., Lim, G. C., Hong, M., & Zheng, H. (2013). Laser cleaning of carbonaceous deposits on combustion engine components. 436-442. Paper presented at 32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013, Miami, FL, United States.
Guan, Yingchun ; Liu, Chih-Hsing ; Lim, Gnian Cher ; Hong, Minghui ; Zheng, Hongyu. / Laser cleaning of carbonaceous deposits on combustion engine components. Paper presented at 32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013, Miami, FL, United States.7 p.
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Guan, Y, Liu, C-H, Lim, GC, Hong, M & Zheng, H 2013, 'Laser cleaning of carbonaceous deposits on combustion engine components', Paper presented at 32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013, Miami, FL, United States, 13-10-06 - 13-10-10 pp. 436-442.

Laser cleaning of carbonaceous deposits on combustion engine components. / Guan, Yingchun; Liu, Chih-Hsing; Lim, Gnian Cher; Hong, Minghui; Zheng, Hongyu.

2013. 436-442 Paper presented at 32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013, Miami, FL, United States.

Research output: Contribution to conferencePaper

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Guan Y, Liu C-H, Lim GC, Hong M, Zheng H. Laser cleaning of carbonaceous deposits on combustion engine components. 2013. Paper presented at 32nd International Congress on Applications of Lasers and Electro-Optics, ICALEO 2013, Miami, FL, United States.