▎ 摘　　要

NOVELTY - The electric coil (10) has a coil main portion (11), and a coil wire (25,25a) which surrounds the coil main portion in the form of winding on the peripheral surface of the coil main portion. The coil wire is comprised with an electrically conductive wire core, and an insulation layer which partially surrounds the wire core. The wire core is made of aluminum, and graphene which is electrically conductive contact with the aluminum. USE - Electric coil used as component of fuel injector (claimed) inserted in internal combustion engine of motor car. ADVANTAGE - Since the wire core is made of graphene which is electrically conductive contact with the aluminum, the highest possible power density and the highest possible fill factor of the electric coil are achieved without increasing the size of the coil main portion. The installation space of the electric coil is reduced. The design structure of the electric coil is made as compact. DESCRIPTION OF DRAWING(S) - The drawings show the longitudinal sectional view of the electric coil, and the perspective view of the coiled band. Electric coil (10) Coil main portion (11) Coil wire unit (20) Coil wire (25,25a) Coiled band (28)