| 摘要 |
The invention relates to a common-rail direct fuel injection system comprising a control unit, a pump and a valve that is controlled so as to be fully open or fully closed by the control unit in order to adjust a fuel volume transferred to the pump so as to be fed into the common rail, wherein said control unit includes: a first means for determining a peak phase duration (27) during which a control is to be applied to the valve in order to obtain a peak current (60) and trigger a change in the valve state; a second means for determining a holding ratio according to which a control is to be applied to the valve after the change in the state thereof in order to maintain a holding current necessary for maintaining said valve state; an application means capable of applying said control to said valve first continuously during said peak phase duration (27) and then in pulse width modulation according to said holding ratio (28); and at least one recurrent and automatic adaptation means (42). |
