| 摘要 |
A fuel system for a gas turbine engine having a main burner fuel supply line (32a) and a pilot burner fuel supply line (23, 24, 26, 25), a high pressure pump (15) supplying fuel to the main and pilot burner supply lines in use, a throttle valve (32) controlling the flow of fuel in the main burner supply line (32a), a metering valve (24) controlling the flow of fuel in the pilot burner supply line, and a pressure raising valve (26) between the pilot burners (11) and the metering valve (24), the pressure raising valve (26) serving to maintain the system fuel pressure upstream of the pressure raising valve (26) to a pre-determined amount in excess of the pressure of fuel supplied from the throttle valve (32) to the main burners (12a, 12b). <IMAGE>
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