| 摘要 |
PURPOSE:To eliminate the possibility of generating engine damage, by providing a limiting means which limits correction of the ignition timing to its advance timing side after knocking disappears, when a supercharge pressure control means comes to be substantially unable to control a supercharge pressure to be decreased. CONSTITUTION:An engine B is equipped with a turbosupercharger A, and the engine B, having an ignition timing control means C and a supercharge pressure control means D, controls the ignition timing to be retarded by the ignition timing control means C, when generation of knocking is detected, while the ignition timing so as to be advanced to the regular ignition timing when the knocking disappears. While the engine controls the knocking, when it is generated, so as to decrease a supercharge pressure by the supercharge pressure control means D. In a device such as in the above, an advance timing amount limiting means E is further provided, and when a decrease of the supercharge pressure comes to be substantially unable to be controlled by the supercharge pressure control means D, the engine is controlled so as to restrict correction of the ignition timing to its advance timing side by the ignition timing control means C after the knocking disappears. |
