Super Knock Control Logic Design and Verification for Turbocharged Gasoline Direct Injection Engine

During development of turbocharged gasoline direct injection engine, super knock is a common and dangerous phenomenon. The development of super knock suppression strategy involves in three points. First, super knock control logic design; second, super knock with proper frequency induction on test bench. Third, system which super knock logic embedded verification should be done, including whether the super knock is detected, whether proper steps are taken by the system to suppress super knock. These issues are discussed in the paper. It has been proved by bench test result that the super knock control logic described in the paper can give appropriate protection to turbocharged gasoline direct injection (GDI) engine.