Patent ID: 6360723
Filing Date: 2002-03-26
Classification: F02M

Abstract:
A mounting apparatus of a fuel injection valve for a fuel introducing cylinder portion of the fuel injection valve being detachably mounted to the fuel distributing pipe, wherein the fuel distributing pipe (D) comprises:a fuel passage (1) pierced along a longitudinal direction Xâ€”X; a fuel introduction cylinder portion guide hole (2) communicated with the fuel passage (1) and open to a lower end surface (D1), in a cross section Yâ€”Y perpendicular to the longitudinal direction Xâ€”X; a first engaging groove (3) recessed along a longitudinal direction on one (D2) of opposing both side surfaces; and a second engaging groove (4) recessed along a longitudinal direction on another side surface (D3), the fuel injection valve (J) comprises: a fuel introducing cylinder portion (6) formed from a rear end surface (5A) of an engaging flange portion (5) toward a rear end (5B); an injection cylinder portion (9) formed from a front end surface (5C) of the engaging flange portion (5) toward a front end (5D) via a connecting cylinder portion (8) provided with a connector portion (9); and opposing flat wall portions (5E, 5F) opposing to each other in the connecting cylinder portion (8) extending from the front end surface (5C) of the engaging flange portion (5) and having a width B smaller than a diameter A of the engaging flange portion (5), the engaging member (K) made of an elastic material comprises: a fork portion (10) to be inserted and arranged in the opposing flat wall portions (5E, 5F) of the fuel injection valve (J); a first engaging protrusion (11A) formed in an upper end portion of a first bending piece (11) extending from a base portion (9) of the fork portion (10) toward an upper portion so as to be fitted and arranged in the first engaging groove (3); and second engaging protrusions (13) formed in respective upper end portions of a third bending piece (12) and a fourth bending piece (14) respectively extending from end portions of a first arm portion (10A) and a second arm portion (10B) in the fork portion (10) toward upper portions so as to be fitted and arranged in the second engaging groove (4), and in a state of the fuel introduction cylinder portion (6) of the fuel injection valve (J) being inserted into the fuel introduction cylinder portion guide hole (2) of the fuel distributing pipe (D) and the rear end surface (5A) of the engaging flange portion (5) being brought into contact with the lower end surface (D1) of the fuel distributing pipe (D), the first engaging protrusion (11A) of the engaging member (K) is arranged in such a manner as to be engaged with the first engaging groove (3) of the fuel distributing pipe (D), the fork portion (10) is arranged in such a manner as to be inserted between the opposing flat wall portions (5E, 5F) of the fuel injection valve (J), the second engaging protrusion (13) is arranged in such a manner as to be fitted to the second engaging groove (4) of the fuel distributing pipe (D), and the engaging flange portion (5) of the fuel injection valve (J) is gripped by the lower end surface (D1) of the fuel distributing pipe (D) and the fork portion (10) of the engaging member (K).