Influence of Autoignition and Pressure Wave Behavior on Knock Intensity Based on Multipoint Pressure Measurement and In-Cylinder Visualization of the End Gas

In this study, the effect of autoignition behavior in the unburned end-gas region on pressure wave formation and knock intensity was investigated. A single-cylinder gasoline engine capable of high-speed observation of the end gas was used in the experiments. Visualization in the combustion chamber and spectroscopic measurement of light absorption by the end gas were carried out to analyze autoignition behavior in the unburned end-gas portion and the reaction history before autoignition. The process of autoignition and pressure wave growth was investigated by analyzing multipoint pressure histories. As a result, it was found that knocking intensity increases through interaction between autoignition and pressure waves.

• Record URL:
  • https://doi.org/10.4271/2018-32-0001
• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01487191
• Supplemental Notes:
  • Abstract reprinted with permission of SAE International.
• Authors:
  • Yamashita, Takahiro
  • Takahata, Shuhei
  • Kudo, Hiroki
  • Izako, Takuya
  • Ishikawa, Takahiro
  • Saito, Masanori
  • Tanabe, Mitsuaki
  • Iijima, Akira
• Conference:
  • SAE/JSAE Small Engine Technology Conference
  • Location: Düsseldorf , Germany
  • Date: 2018-11-6 to 2018-11-8
• Publication Date: 2018-10-30

Language

• English

Media Info

• Media Type: Web
• Features: References;
• Serial:
  • SAE Technical Paper
  • Publisher: Society of Automotive Engineers (SAE)
  • ISSN: 0148-7191
  • EISSN: 2688-3627
  • Serial URL: http://papers.sae.org/

Subject/Index Terms

• TRT Terms: Combustion chambers; Engine knock; Ignition; Ignition systems; Measurement; Pressure; Visualization
• Subject Areas: Highways; Vehicles and Equipment;

Filing Info

• Accession Number: 01689231
• Record Type: Publication
• Source Agency: SAE International
• Report/Paper Numbers: 2018-32-0001
• Files: TRIS, SAE
• Created Date: Dec 20 2018 3:32PM