Orbital Engine Company (Australia) Pty Limited

Peter John Murdoch

Robert Walter Frew

Hugh William Carlisle

John Richard Mills

A system for assisting in the atomisation of liquid particles conveyed in a gas stream flowing along a flow path having a rigid boundary, said system involving the creation of one or more shock waves in the gas stream. In a preferred embodiment, the system comprises a fuel injection nozzle () comprising a fluid flow passage () terminating at a discharge orifice () and incorporating a delivery port () defined between a valve seat () and a valve member () movable with respect to the valve seat for opening and closing the delivery port. Fuel is delivered along the fluid flow passage () into a combustion chamber through the discharge orifice () upon opening of the delivery port (). The valve member () devines an inner boundary surface () of the flow passage () and the valve seat () defines at least part of an outer boundary surface () of the flow passage (). The inner and outer boundary surfaces () are configured to generate one or more shock waves in an air-fuel mixture flowing at supersonic speed therebetween.

Shockwave injector nozzle

An injector nozzle for a fuel injected internal combustion engine, said injector nozzle including a port () having a valve seat surface () and a valve member () having a seating surface (), said valve member () being movable relative to the port () to respectively provide a nozzle passage () between the valve seat surface () and the seating surface () for the delivery of fuel therethrough or sealed contact therebetween to prevent said delivery of fuel, the valve member () including an outer valve surface () located adjacent the seating surface and external to the port, wherein a sharp edge () is provided on the valve member () at the transition between the seating surface () and the outer valve surface () thereby for controlling the formation of deposits at or adjacent an exit of the nozzle passage ().

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Elsternwick, Australia

Peter John Murdoch