Vehicle engine ignition timing system and method with...

Details Vehicle engine ignition timing system and method with... Vehicle engine ignition timing system and method with...

F - Mech Eng,Light,Heat,Weapons

02

P

F02P 5/145 (2006.01) F02P 5/152 (2006.01)

Patent

CA 2065140

An ignition timing system activates combustion ignition apparatus in a combustion chamber at times established at least partly in response to a knock retard value. The knock retard value is normally modified in response to a knock signal generated by a knock sensor during a knock window corresponding to a predetermined crankshaft rotational angle in which knock is to be sensed. However, if the knock signal is determined to be present at the beginning of an occurrence of the knock window, modification of the knock retard value in response to the knock signal is prevented during that occurrence of the knock window, since a knock signal already present at the beginning of the knock window is assumed to be noise.

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