Apparatus and method for knock detection in internal combustion engines

An apparatus for knock detection, comprising:

• an internal combustion engine having a plurality of cylinders, each said cylinder having a wet sleeve replaceable cylinder liner;
• an ignition system coupled to said engine for supplying a timed spark discharge to each of said plurality of cylinders, wherein an ignition timing of one of said plurality of cylinders is advanced with respect to any other of said plurality of cylinders, such that said one cylinder is more prone to knock than any other of said plurality of cylinders;
• a knock sensor coupled to said engine in a vicinity of said one cylinder such that said knock sensor is operable to detect vibrational energy produced by knocking in said one cylinder and to produce a first output in response thereto;
• and
• an engine control module coupled to said knock sensor and operable to detect said first output, and further coupled to said engine for controlling an operating state of said engine;
• wherein said engine control module is operable to change said operating state in response to detecting said first output.

An apparatus for knock detection, comprising:

• an internal combustion engine having a plurality of cylinders, each said cylinder having a wet sleeve replaceable cylinder liner;
• a turbocharger having a divided turbine housing having first and second exhaust inlet sections, wherein said first housing section is wastegated and said second housing section is non-wastegated;
• a first exhaust manifold coupling a first group of said plurality of cylinders to said first housing section for flow of first exhaust gases;
• a second exhaust manifold coupling a second group of said plurality of cylinders to said second housing section for flow of second exhaust gases;
• a knock sensor coupled to said engine in a vicinity of said second group of cylinders such that said knock sensor is operable to detect vibrational energy produced by knocking in at least one of said second group of cylinders and to produce a first output response thereto;
• and
• an engine control module coupled to said knock sensor and operable to detect said first output, and further coupled to said engine for controlling an operating state of said engine;
• wherein said engine control module is operable to change said operating state in response to detecting said first output.