| 摘要 |
<p>Fuel control arrangements 40 provide and control fuel flow to injectors 41 through fuel control valves 42. The injectors 41 are connected to respective fuel control valves 42 which in turn are connected to a first fuel flow path 43. The injectors 41 are also connected to a second fuel flow path 46. The fuel paths 43, 46 are associated with a fuel source and generally have a recirculation valve 51 between them. When flow in the flow path 43 is stopped, recirculation of fuel can be provided across the recirculation valve 51 to prevent fuel degradation. By provision of a restrictor valve 43 in the second fuel flow path 46 control of fuel recirculation can be achieved, as well as greater flexibility by presenting fuel flow separately through the second flow path 46 to the injector 41 whilst the first flow path 43 is inhibited.</p> |
