Patent ID: 7975674

Claim:
A fuel pump which comprises: at least two pumps, each pump has a respective space configured for receiving fuel, the pumps are configured and operative to run at a mutual phase displacement with respect to each other such that they are able to receive fuel in their respective spaces during different respective periods of time, a valve connected to the pump spaces and being configured to be only settable in an open position or a closed position and being configured to regulate the amount of fuel led from a fuel source to each of the pump spaces, a respective pressure-generating device configured to pressurize the fuel in each of the spaces, a control unit configured and operative to control the valve such that a desired amount of fuel is led to the spaces of the pumps, the control unit being configured and operative to place the valve in the open position for a variable portion of the time periods for causing an individually controlled amount of fuel to be led from the fuel source to the spaces of the respective pumps during the time periods.