The exploitation of full load capabilities of DI gasoline engines requires at least the same degree of effort as in MPFI engine development. An optics based sensor and sensing technique is presented, which together with conventional pressure indicating provides identification of self ignition centers as the engine is operated under knock or borderline knock conditions. The knock location sensor is configured as a spark plug providing the relevant spark plug properties together with the multichannel optical access into the upper part of the combustion chamber. Functionality and sensitivity of this sensing technique are demonstrated and results for combustion system development are shown.
Localization of Knock Events in Direct Injection Gasoline Engines
Sae Technical Papers
SAE 2001 World Congress ; 2001
2001-03-05
Conference paper
English
Localization of knock events in direct injection gasoline engines
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