| 摘要 |
PURPOSE:To raise the reliability, and to raise the flexibility for addition, change, etc. of a controlled variable, by utilizing effectively an information processing system, and controlling so that at least the internal combustion engine continues its operation by the other system even in case when a fault, etc. occur in one system. CONSTITUTION:At the normal time, an information processing system 15 and an information processing system 16 share the control of an ignition system and the control of a fuel supply system, respectively, and execute each different operation processing, and also are constituted so that each operation processing information can be sent and received mutually through a common memory 25, therefore, the information processing system is utilized effectively and its performance is improved. On the other hand, in case of abnormality, for instance, when the processing system 16 becomes inoperable, digital operating devices 17 and 21 of each processing system receive operation processing information of the other processing system through the common memory 25. Subsequently, the normal processing system 15 is changed to a control program in case of abnormality. Being different from the normal time, this processing system 15 cannot obtain a detecting data from a water temperature sensor 13 or operation processing information, but control required for continuing the operation of the internal combustion engine is executed from other sensor connected to the processing system 15, and a control signal from the processing system 15 is sent to actuators 20, 24. |
