| abstract |
An engine system with a reformer that reforms pre-reform fuel with a reformer mounted on an exhaust pipe and supplies reformed fuel containing hydrogen to the engine. The target heat generation start time is determined according to the engine load, the engine speed, and the excess air ratio of the air-fuel mixture, and the difference between the engine's current heat generation start time and the target heat generation start time is predetermined. A control device for controlling the ignition timing of the engine so as to fall within the range. |