| 摘要 |
PURPOSE:To always obtain an exact value by deriving a residual quantity of fuel by subtracting a fuel consumption quantity from a residual quantity of fuel derived by a detection or an arithmetic, and outputting a detected fuel residual quantity as it is, when a fuel consumption quantity detecting means is abnormal. CONSTITUTION:A fuel consumption quantity in the course of operating an engine is monitored, and when it is abnormally small, it is decided that an abnormality is generated in a function for detecting the fuel consumption quantity, and a fail safe function operates. That is to say, a residual quantity of fuel is operated basing on a signal of a sender 2, and displayed. In case there is no abnormality in the function for detecting the fuel consumption quantity, a residual quantity of fuel is derived exactly by subtracting the fuel consumption quantity from a fuel residual quantity data. |
