Patent ID: 8731805
Filing Date: 2014-05-20
Classification: F02B,F02D,F02N,F02P

Abstract:
1. An apparatus for controlling ignition of a general-purpose internal combustion engine in which an ignition signal is produced in a compression stroke and in an exhaust stroke of a four stroke cycle, comprising: an engine speed detector that detects a speed of the engine; an engine idling determiner that determines whether the engine is idling based on the detected engine speed; an average engine speed calculator that calculates an average engine speed over a predetermine period of time based on the detected engine speed; an ignition cutter that cuts one of the ignitions to be conducted based on the produced two ignition signals when the engine is determined to be idling; an after-ignition-cut engine speed detector that detects an after-ignition-cut engine speed after the ignition was cut; an ignition signal discriminator that discriminates whether each of the two ignition signals was produced in the compression stroke or in the exhaust stroke based on the calculated average engine speed and the after-ignition-cut engine speed; and an ignition controller that controls the ignition based on the ignition signal discriminated to be produced in the compression stroke in the two ignition signals.