Flame Propagation and Knock Detection Using an Optical Fiber Technique in a Spark-Ignition Engine Hyundai Motor Company

Format:

Conference/Event

Author/Creator:

Chun, Kwang Min, author.

Conference Name:

International Pacific Conference On Automotive Engineering (1993-11-15 : Phoenix, Arizona, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1993

Summary:

In this research, an optical system for the detection of the flame propagation under the non-knocking and knocking conditions is developed and applied to a mass produced four cylinder SI engine.The normal flames are measured and analyzed under the steady state operating conditions at various engine speeds.For knocking cycles, the flame front propagations before and after knock occurrence are simultaneously taken with cylinder pressure data.In non-knocking and knocking cycles, flame propagation shows cycle-by-cycle variations, which are quite severe especially in the knocking cycles.The normal flame propagations are analyzed at various engine speeds, and show that the flame front on the exhaust valve side becomes faster as the engine speed increases.According to the statistical analysis, knock occurence location and flame propagation process after knock can be categorized into five different types. The squish region between intake and exhaust valve is the primary knock occurrence region

Notes:

Vendor supplied data

Publisher Number:

931906

Access Restriction:

Restricted for use by site license