Patent ID: 7137571
Filing Date: 2006-11-21
Classification: F02M

Abstract:
1. An injector nozzle through which fluid is delivered, said nozzle comprising a port having an internal surface and a valve member having a complementary external surface, said valve member being movable relative to the port to respectively provide a passage between said surfaces for the delivery of fluid in the form of a spray or sealed contact therebetween to prevent the delivery of fluid, and said injector nozzle having a fluid flow control body located beyond an extremity of the port, said flow control body having a control surface arranged downstream from the port in the direction of movement of the valve member, said control surface being configured and positioned to promote the fluid spray established by the fluid issuing from the port to, at least in part, follow a path determined by the shape of said control surface, wherein said flow control body includes an insulating region formed by a gap at least a first portion of which is located between an end face of the valve member and a portion of the control surface closest to said end face of said valve member and opening proximate said end face; and at least a second portion of which is generally elongate and extends longitudinally along said fluid flow control body in the direction of movement of the valve member, said insulating region restricting the flow of heat between the control surface and the valve member.