This content is not included in your SAE MOBILUS subscription, or you are not logged in.
Wide Range of Application for Mixture Concentration Measurement in the Vicinity of the Spark Plug Using Infrared Absorption
Published October 01, 2007 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
Giving some improvements of the measurement instrument of infrared absorption, local fuel concentration near the spark plug was measured continuously in one cycle in a wide operating condition including various engine loads with the high time resolution. It has been clarified that, in a comparatively homogeneous mixture, combustion performance could not be explained only by local air-fuel ratio near the spark plug, while combustion duration has strong relation to locally measured air-fuel ratio near the spark plug in the transition condition that the amount of the supplied fuel into cylinder changes every cycle.