Knocking avoidance control system of a four-stroke engine...

Details Knocking avoidance control system of a four-stroke engine... Knocking avoidance control system of a four-stroke engine...

F - Mech Eng,Light,Heat,Weapons

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F01L 1/344 (2006.01) B63H 20/00 (2006.01) F02B 61/04 (2006.01) F02B 75/20 (2006.01) F02B 77/08 (2006.01) F02D 13/02 (2006.01) F02D 35/02 (2006.01) F02P 5/152 (2006.01)

Patent

CA 2449630

An outboard motor includes four-cycle engine for a marine drive, and more particularly a four-cycle engine for a marine drive that has a vertically extending camshaft. The four-cycle engine includes at least one pre-ignition or knock sensor. An electronic control unit adjusts ignition timing and intake camshaft timing to protect the engine during a pre-ignition condition while improving fuel efficiency and preserving high engine output.

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