Rolls-Royce Controls and Data Services Limited

Rolls-Royce Corporation

Rolls-Royce Engine Control Systems Limited

Jonathan David Pye

Michael Griffiths

A fuel staging system is described which comprises a staging valveoperable to divide a metered fuel supply between a pilot delivery lineand a mains delivery line, and a recirculation valveconnected to the mains delivery lineand operable to permit a recirculation fuel flow to be supplied to the mains delivery linewhen the staging valveoccupies a position in which substantially no fuel is delivered to the mains delivery linethrough the staging valve

Fuel staging system

A fuel system comprises a supply unit operable to deliver a metered supply of fuel to a supply manifold, a staging valve operable to control the supply of fuel from the supply manifold to a pilot outlet and a main outlet, and control means operable to control the operation of the staging valve to control whether fuel is delivered through the pilot and/or main outlet thereof.

Growing community of inventors

East Grinstead, United Kingdom

Jonathan David Pye