Orbital Engine Company (australia) Pty Limited

Orbital Australia Pty Limited

Nicholas Coplin

Geoffrey Paul Cathcart

Raymond John Hill

John Howard Tubb

Michael Leonard McKay

Mario Charles Muscat

Callan Murray Bleechmore

Stephen John Karay

Donald Andrew Railton

An unmanned aerial vehicle has an internal combustion engine, and a fuel and lubrication system comprising a fuelling system for fuelling the engine and a lubrication system for delivering lubricating oil to the engine. The fuelling system comprises a fuel reservoir from which fuel can be delivered to the engine. The fuel reservoir comprises a main tank and a header tank. The lubrication system comprises an oil tank. The oil tank is accommodated internally within the main tank to provide an integrated assembly. The arrangement provides for warming of lubrication oil for the UAV engine using several available heat sources. Further, the arrangement facilitates a configuration and layout intended to minimise or negate any undesirable moments of inertia for the UAV during flight as fuel and oil is consumed.

UAV fuel and lubrication system

A method of operation of a dual fluid fuel injection system arranged to supply fuel to a cylinder of an internal combustion engine, the dual fluid fuel injection system being controllable to effect fuel metering events and fuel delivery events. The method comprises operating the dual fluid fuel injection system so as to have at least one fuel delivery event during each engine cycle and to have fewer than one fuel metering event, on average, per engine cycle. An electronic control unit for implementing the method is also described. The method and control unit allow dynamic range of a fuel metering injector, where included within the dual fluid fuel injection system, to be extended.

Method of injecting fuel into an engine

Fuel injection system for an internal combustion engine

A fuel vapor handling system for a dual fluid fuel injection system, including: a fuel supply apparatus and a gas supply apparatus for respectively supplying liquid fuel and gas-vapor mixture to at least one delivery injector of the dual fluid fuel injection system, the fuel supply apparatus including a fuel pump; and a fuel vapor control device providing a fluid communication between the fuel supply apparatus downstream of the fuel pump and the gas supply apparatus to allow fuel vapor present within the fuel supply apparatus to pass to the gas supply apparatus for subsequent delivery by the at least one delivery injector. The fuel vapor device preferably allows the pressure of the liquid fuel supplied to the at least one delivery injector to be substantially equalized with the pressure of the gas supplied to the delivery injector.

Fuel vapor handling system

Growing community of inventors

Merriwa, Australia

Nicholas Coplin