FUEL INJECTION VALVE

摘要

A revolvable element (12) made of single-crystal silicon is held in a revolvable element holding section (22) and is fixed between a nozzle (11) and an orifice plate (1) through an elastic member (21). A central flow channel in the revolvable element (12) is provided with a ridge to narrow the annular clearance between the outer diameter of a revolvable element (7) and the inner diameter of the revolvable element. The flow rate of the fuel flowing through the annular clearance is suppressed and a strong revolving force is imparted to the fuel.