Tag Archives: analyze source of sporadic super-knock

Tsinghua team uses optical diagnostics to analyze source of sporadic super-knock in advanced SI engines

Tsinghua team uses optical diagnostics to analyze source of sporadic super-knock in advanced SI engines

Knock is one of several different well-known abnormal combustion processes in spark-ignition engines; most of these abnormal combustion issues have been addressed with improved design or control schemes as well as fuel specifications. However, emerging advanced SI engines—e.g., those with turbocharging and direct injection—can exhibit a new phenomenon: super-knock, or violent engine knock.