High pressure pump for complex injection engines

A high pressure pump for complex injection engines, including a pressure unit configured to apply pressure to low pressure fuel flowing in from a low pressure fuel inlet to generate high pressure fuel, a damper configured to dampen a pulsation generated when applying the pressure to the low pressure fuel, a high pressure fuel outlet through which the high pressure fuel obtained by the pressure unit is discharged to a high pressure fuel rail, and a body of the high pressure pump comprising:

• a first flow path that transports the low pressure fuel flowing in through the low pressure fuel inlet;
• a low pressure fuel storage chamber disposed in a lower portion of the body to store the low pressure fuel transported from the first flow path;
• a second flow path that transports the low pressure fuel stored in the low pressure fuel storage chamber, wherein the first flow path and the second flow path are separately formed within the body;
• a flow control valve disposed over the low pressure fuel storage chamber to discharge the low pressure fuel, transported through the second flow path, to the pressure unit or the damper disposed in an upper portion of the body based on an opening or closing operation, wherein the flow control valve includes an inflow aperture connected to the second flow path, a first discharging aperture connected to the pressure unit, and a second discharging aperture connected to the damper;
• and
• a low pressure fuel outlet that discharges the low pressure fuel, transported through the damper, to a low pressure fuel rail.