Invention Grant
US08827187B2 Fuel injection valve and internal combustion engine 有权
燃油喷射阀和内燃机

Fuel injection valve and internal combustion engine
Abstract:
A fuel injection valve includes: a nozzle body provided with an injection hole at a tip portion; a needle that is located slidably in the nozzle body and includes a seat portion seated on a seat position in the nozzle body; and an air bubble generation means generating air bubbles in a fuel flowing through the nozzle body, and when a curvature radius is R, a length of a curve is L and a constant is a, an inner peripheral shape of the injection hole includes a curving part passing through a region surrounded by a clothoid curve which is expressed by R×L=a2 and of which the constant a is 0.95 and an clothoid curve of which the constant a is 1.05 or a region surrounded by approximate curves of the clothoid curves at a cross-section surface along a direction of axis of the injection hole.
Public/Granted literature
Information query
Patent Agency Ranking
0/0