| 摘要 |
<p>A fuel injection system comprises: a first control device for outputting a first pulse signal; and a second control device for calculating the energization pulse time of a gaseous-fuel injection valve on the basis of the first pulse signal, outputting a second pulse signal having a pulse width set to the energization pulse time of the gaseous-fuel injection valve to the gaseous-fuel injection valve during a gaseous-fuel injection mode, and outputting the first pulse signal to a liquid-fuel injection valve during a liquid-fuel injection mode. During the gaseous-fuel injection mode, the second control device initiates timing of a first time after the energization pulse time of the gaseous-fuel injection valve falls to or below the lower of two hysteretic thresholds, and the second control device stops outputting a second pulse and switches to outputting the first pulse signal to the liquid-fuel injection valve when the energization pulse time of the gaseous-fuel injection valve does not exceed the higher of the two hysteretic thresholds within the first time.</p> |
