초록 ▼

A fuel pump and a method for controlling a fuel pump. At least two pumps run at a mutual phase displacement such that they are able to receive fuel during different periods of time. A control unit causes a valve, which is only settable in an open position and a closed position, to lead a desired amo

A fuel pump and a method for controlling a fuel pump. At least two pumps run at a mutual phase displacement such that they are able to receive fuel during different periods of time. A control unit causes a valve, which is only settable in an open position and a closed position, to lead a desired amount of fuel to the respective pump. The control unit places the valve in the open position for a variable portion of the periods so that an individually controlled amount of fuel is led to the respective pump during those periods. Maintenance of good efficiency of the fuel pump and low noise emissions is thus made possible in operating situations where the fuel pump delivers a reduced amount of fuel.

대표청구항 ▼

The invention claimed is: 1. 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 respec

The invention claimed is: 1. 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.