Patent ID: 8763588
Filing Date: 2014-07-01
Classification: F02M

Abstract:
1. A vibration insulator for a fuel injection valve, the vibration insulator damping vibration that occurs to the fuel injection valve, wherein the fuel injection valve is mounted on a cylinder head while being inserted into an insertion hole provided in the cylinder head, a shoulder section is annularly formed at an inlet portion of the insertion hole in a widening manner, the fuel injection valve includes a stepped section, a diameter of which is enlarged in a tapered manner so that the stepped section has a first tapered surface facing the shoulder section, and the vibration insulator is configured to damp vibration in the fuel injection valve by locating the vibration insulator between the stepped section and the shoulder section, the vibration insulator includes a circular ring-like tolerance ring abutting the first tapered surface by having, on the inner circumference thereof, a recessed second tapered surface facing the first tapered surface, and a tapering angle of the second tapered surface is different from a tapering angle of the first tapered surface, a bottom of the vibration insulator has an outer circumference that contacts the shoulder section, and a position at which second tapered surface and first tapered surface abut each other is located radially inward of the outer circumference of the bottom of the vibration insulator.