Patent ID: 6460515
Filing Date: 2002-10-08
Classification: F02M

Abstract:
A fuel injector for use in a fuel system having a control fluid source and a high pressure fuel source, comprising;(i) an injection nozzle; (ii) a control valve comprising a control valve member moveable between first and second positions; and (iii) a fluid pressure actuable valve comprising a fluid pressure actuable valve member and a seating, said fluid pressure actuable valve member being moveable under control of said control fluid between an open position in which it is spaced from the seating and a closed position in which it is engaged with the seating; wherein when said control valve member is in the first position, a control fluid flow path exists from the control fluid source to the fluid pressure actuable valve member; wherein a fuel flow path exists from the high pressure fuel source to the injection nozzle through the fluid pressure actuable valve when said fluid pressure actuable valve member is in the open position, said fuel flow path passing between the fluid pressure actuable valve member and the seating, and wherein, in use, movement of the fluid pressure actuable valve member between the open and closed positions is by contact of the control fluid under pressure therewith.