| 摘要 |
<p>The present invention relates to a fuel leakage detecting method of a direct injection fuel injection system comprising: a step of judging whether a fuel cut off mode is on or not; a step of measuring a pressure of the fuel injection system with a preset time difference when entering into the fuel cut off mode; a step of calculating a difference of pressure values measured with the time difference, and comparing whether the calculated measured pressure difference is greater than or equal to a set value; and a step of judging as a fuel leakage if the measured pressure difference is greater than or equal to the set value. The present invention can reduce a risk of fire outbreak in an engine room due to the fuel leakage by detecting a fuel leaking in the fuel injection system.</p> |
