Browse Publications Technical Papers 2018-32-0002
2018-10-30

Study of Knocking Characteristics in Supercharged Ultra-lean Condition in an SI Engine Under a High Compression Ratio 2018-32-0002

This study investigated the influence of EGR and spark advance on knocking under high compression ratio, ultra-lean mixture and supercharged condition using premium gasoline as a test fuel. A high-compression ratio, supercharged single cylinder engine was used in this experiment. As a result, the period from ignition to autoignition was prolonged. In addition, knock intensity was drastically reduced. In other words, it is inferred that by combining an appropriate amount of EGR and spark advance, high efficiency operation avoiding knocking can be realized.

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