About the throttle body

An electronic throttle valve belongs to a throttle valve part of an air intake system of an automobile engine. It comprises a throttle body, a throttle valve plate, a throttle shaft, a DC motor and a gear reduction mechanism, wherein the signal of the gear reduction mechanism is output to a throttle position sensor of a singlechip, one end of a torsion spring is fixed on the throttle body, and the other end is fixed on a gear of the throttle shaft; It also has an idle speed adjusting device: the outer adjusting screw is screwed on the throttle body, the inner adjusting screw is screwed on the inner cavity of the outer adjusting screw, the ejector pin is placed in the inner cavity of the outer adjusting screw with a shoulder, the outer end of the ejector pin in front of the shoulder extends out of the opening of the outer adjusting screw, and the spring abuts between the ejector pin shoulder and the inner adjusting screw; The outer end of the ejector pin abuts against the gear of the throttle shaft, so that the throttle plate is in a slightly static position when there is no motor drive. The invention can adjust the high and low idle positions, accurately control the air intake of the engine under the idle working condition, and reduce the manufacturing accuracy.