Manual:Basic Engine Theory

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Four stroke engine

Knowing cam position allows us to calculate stroke for each cylinder. Crank on the other hand rotates twice faster and for each crank position there are two cycles in which any given cylinder could be, thus individual ignition is not possible if one does not have or cannot use cam sensor.


See also http://rusefi.com/wiki/index.php?title=Manual:Software:Fuel_Control

See also http://rusefi.com/wiki/index.php?title=Manual:Software:Ignition_Control