Patent ID: 7231902
Filing Date: 2007-06-19
Classification: F02B,F02M,Y02T

Abstract:
1. A fuel injection valve for injecting fuel, wherein a fuel spray injected from the fuel injection valve includes a first portion having a long spray reaching distance and a second portion having a short spray reaching distance, wherein the first portion consists essentially of a fuel rich spray portion and the second portion consists essentially of a fuel lean spray portion, wherein the first portion having the long spray reaching distance and the second portion having the short spray reaching distance are formed around a circumference of a cross section crossing a central axis line of an injection hole in the fuel injection valve, wherein the fuel lean spray portion exists at only one location in the circumference of the cross section crossing the central axis line of the injection hole, and wherein a flow rate of fuel injected from the fuel injection valve will include only one peak along a first axis imaged on said cross section, which first axis passes through said fuel lean spray portion in an area where no peaks of the flow rate of fuel are located, such that the flow rate of fuel along the first axis in the area where it passes through the fuel lean spray portion is substantially the same as the flow rate of fuel in a central portion of the spray pattern along the central axis line, and, wherein the flow rate of fuel will include two peaks along a second axis which is imaged on said cross section and is perpendicular to said first axis.