METHOD FOR PUMP UNIT CONTROL Russian patent published in 2009 - IPC F02M51/08 F04B17/04 

FIELD: engines and pumps.

SUBSTANCE: invention is related to propulsion engineering, in particular, to fuel equipment of internal combustion engine. Method for displacement of pump unit comprises the following stages: power is supplied to coil unit for displacement of driving unit from initial position to connected position, for creation of at least partially the first feeding stroke, driving unit is returned in initial position for creation of at least partially the second feeding stroke, during return of driving unit into initial position power is supplied to coil unit to brake driving unit before it achieves initial position. Method for control of internal combustion engine fuel nozzle includes the following stages: controller is provided, which is arranged with the possibility to supply signal forms to driving unit of fuel nozzle for control of driving unit motion. Signal forms consist of at least the first, second and third connection signals. The first connection signal is intended for displacement of driving unit from initial position for creation of the first feeding stroke. The second connection signal is intended for return of driving unit into initial position for creation of the second feeding stroke. The third connection signal is intended for braking of pump unit before it achieves initial position, the first signal form is supplied, which comprises the first and third connection signals to driving unit in the first range of engine rotation frequencies, the second signal form is supplied, which contains the first and second connection signals in the second range of engine rotation frequencies, which are higher than frequency of the first range. Also describes system of fuel injection for internal combustion engine, which realises the method.

EFFECT: invention makes it possible to improve feeding of fluid medium in pump, to provide for short cycle time in pumps for fluid medium, simultaneously preserving or even improving accuracy of pump for fluid medium.

20 cl, 8 dwg