Spark-Timing Control Based on Correlation of Maximum-Economy Spark Timing, Flame-Front Travel and Cylinder-Pressure Rise.

摘要

A investigation was conducted on a full-scale air-cooled cylinder in order to establish an effective means of maintaining maximum-economy spark timing with varying engine operating conditions. Variable fuel-air-ratio runs were conducted in which relations were determined between the spark timing and the basic factors in engine operation, flame-front travel, and cylinder-pressure rise.