Spoolless coil assembly for vehicle solenoid valves

摘要

A spoolless coil assembly includes a heat conductive actuator tube that has a first end cap and a second end cap on its ends. A winding area around the actuator tube is established between the end caps, and a wire is wound around the actuator tube within the winding area to form a coil. Since the coil is wound directly to the actuator tube, heat generated by the coil is dissipated by the metal actuator tube. Thus, the efficiency of the coil is promoted.