Diesel fuel filter device for diesel fuel injection system, has ring channel area formed around inversion, where channel area collects particles from flow of supplied fuel, and particles are filtered through holes

摘要

#CMT# #/CMT# The device (1) has a filter head (2) with an opening arranged around a longitudinal axis for supplying fuel e.g. diesel. A filter middle area (5) has holes (6) that are provided for filtering particles (P) from the supplied fuel. An inversion (8) with a diameter of a filter base reflects flow of the supplied fuel into the middle area or into the head. A ring channel area (10) is formed around the inversion, where the channel area collects the particles from the flow of the supplied fuel. The particles are filtered through the holes by centrifugal energy and/or force of gravity. #CMT# : #/CMT# An independent claim is also included for a method for manufacturing a filter device. #CMT#USE : #/CMT# Used for filtering a diesel fuel with a pre-set fuel pressure such as two thousand bar, in a supply or a supply device of an injection system that is utilized for injecting the diesel fuel into a nozzle by lifting a nozzle needle from a nozzle seat. #CMT#ADVANTAGE : #/CMT# The filter device is designed in such a manner that it prevents churning of the filtered particles. The particles collected in the ring channel area are not troubled by the fuel such as diesel fuel, thus minimizing probability of the intersection by the filter wall in the holes, and hence increasing life span and actual operating period of the filter device. #CMT#DESCRIPTION OF DRAWINGS : #/CMT# The drawing shows a schematic representation of a filter device. P : Particles 1 : Filter device 2 : Filter head 5 : Filter middle area 6 : Holes 8 : Inversion 10 : Ring channel area.