The present invention provides an ignition timing control device and an ignition timing control system which are capable of performing ignition timing control that easily suppresses occurrence of knocking for internal combustion engine that has no function...

The method involves specifying a first ignition timing for each engine speed of a first engine speed range in an internal combustion engine (15). A second ignition timing is specified for each engine speed of a second engine speed range. The first ignition...

The present invention is provided with: an injection timing detection unit (11); an engine rotation speed detection unit (131); an engine load detection unit; and a storing unit (11) for storing control data of the variation in optimal ignition timing with...

Method for correction of the spark advance for an internal combustion engine (1) with a continuous phase transformer at the intake and/or exhaust; for each cylinder (2), the method consists of calculating a theoretical value (AAth) of the optimum spark adv...