| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an emission deterioration informing device capable of appropriately informing deterioration of exhaust emission. <P>SOLUTION: The emission deterioration informing device includes: an actual injection timing sensing means S20 sensing actual injection timing at which fuel injection is actually performed from a fuel injection valve; a deviation amount calculating means S30 calculating a deviation amount between the detected actual injection timing and target injection timing; a warning lamp (emission deterioration informing means) informing deterioration of exhaust emission, when the calculated deviation amount is larger than a predetermined threshold value TH; and an impact state determining means S10 determining whether or not the operation state of an internal combustion engine is in an impact state in which the exhaust emission receives a predetermined influence or more due to the deviation between the actual injection timing and the target injection timing. When the operation state is determined to be the impact state, the emission deterioration informing device allows the lighting operation of the warning lamp (S70), and when the operation state is not determined to be the impact state, the emission deterioration informing device prohibits lighting of the warning lamp (S90). <P>COPYRIGHT: (C)2012,JPO&INPIT |
