The method involves driving displacement element of a fuel pump by a driving device. Fuel is promoted to a high pressure range by a promotion phase. Displacement element is driven in such a way that during displacement movement a constant phase (B) is pres...

A fuel supply pump, which is simple in construction and easy to produce and is capable of efficiently pressurizing a high flow rate of fuel, is provided. The fuel supply pump (50) includes a housing (52), a plunger barrel (53), a plunger (54) for pressuriz...