Fuel injection system for a gas turbine

摘要

A gas turbine has a fuel injection system for supplying pressurized fuel gas to a combustion chamber of a gas turbine. The fuel injection system has at least one electrically controllable magnetic valve working with pulse-width modulation, i.e., controlling the gas flow by varying the length of its opening time pulses in relation to its closing time, in a gas supply conduit. The fuel injection system has at least one electrically controllable magnetic main valve arranged in the supply conduit. Moreover, at least one pilot valve is connected to the supply conduit with its upstream end after the main valve and with its downstream end connected to a conduit leading into a pilot flame chamber inside the combustion chamber.