| 摘要 |
<p>PURPOSE:To feed a large electric current to an electromagnet by forming the electromagnet for attracting-rejecting a permanent magnet interlocked with intake/exhaust valves by a superconducting coil. CONSTITUTION:A permanent magnet 11 is connected to the shaft end part of an inlet valve 1. An electromagnet 2 is located on the outer surface of the shaft end part of the inlet valve 1. The electromagnet 2 consists of a core 21 having an upper magnetic pole 22 and a lower magnetic pole 23, and a superconducting coil 3. Thus, since the electromagnet 2 attracting-rejecting the permanent magnet 11 interlocked with the inlet valve 1 is formed using the superconducting coil 3, a large electric current can be fed into the electromagnet 2. As a result, strong driving force can be generated in an electromagnetic force operated valve drive device.</p> |
