PURPOSE: To improve a followability of the titled device, by arranging such that an idling speed control valve provided in a throttle by-pass passage may be driven by a rotor magnetized in a radial direction and a coil adapted to cause the rotor to rotate in any diretion arbitrarily with a fixed pole.
CONSTITUTION: Provided in a passage bypassing a throttle valve 4 of a suction tube is a valve body 7 driven by a rotary actuator 6. The rotary actuator 6 has magnetic pole surfaces P3, P4 and P5 and P6 respectively of a first and second fixed iron cores FC1 and FC2 spaced in 90 degrees around a circumference thereof, while these magnetic pole surfaces are adapted to attract and repulse with magnetic pole surfaces P1, P2 of a rotor 9 magnetized at a position of 180 degrees. Each of the fixed iron cores FC1 and FC2 is provided via switches SW1 and SW2 with coils CL1 and CL2 which are connected with power sources B1 and B2.
HANAI KAZUO
FUKAYA KATSUYOSHI
| JPS5754637B2 | 1982-11-19 | |||
| JPS579379A | 1982-01-18 | |||
| JPS56115508A | 1981-09-10 |