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Home >> Mini >> 2012 >> Cooper Base, 2D Hatchback, Automatic Trans >> Repair and Diagnosis >> General Information >> OEM General Information >> Functional Description (R56) -- Cooper >> Engine Performance & Emissions - Functional Description >> Knock control - N18 engine >> Notes

Knock control - N18 engine: Notes

At 10.5:1 this powerplant's compression ratio is relatively high for an engine with forced induction. For this reason a knock-control system monitors the combustion process. The knock control features extended functionality. The DME control unit also recognizes super-knocking (a special kind of auto-ignition).