| 摘要 |
PURPOSE:To prevent an engine stop easily caused especially at idling operation, by providing a detecting means of an engine overheated condition and operating full cylinders in operative and idle sides of an engine when the engine is overheated and at least in its prescribed speed or less. CONSTITUTION:A signal from a detecting means 24 of the overheat condition in an engine, for instance, a cooling water temperature sensor 25 is input to a comparator 26, and a voltage value of said signal is compared with preset voltage in the comparator 26, then a signal in accordance with the compared level is fed to a cylinder quantity control circuit 27. This circuit 27 operates such that partial cylinder operation of only operative side cylinders is performed in case of a low level of the signal from the comparator 26 while full cylinder operation is performed in case of a high level of the signal. That is, when the engine is overheated even in its light load range or at idling operation, the full cylinder operation is performed. In this way, fuel is gasified by overheat of the engine and its actual injection quantity is decreased. |
