| 摘要 |
PURPOSE:To secure a stable flow characteristic without being affected by opening of an air-cut valve by installing an air-cut plate so as to make auxiliary air flow into only either one direction along the valve closing or opening direction of a slider. CONSTITUTION:An air-cut plate 32 is installed in an air passage 2 of an idling control valve provided with an air-cut valve, and auxiliary air flowing from an inflow port 2A to an outflow port 2C is guided to only a direction along a valve opening direction B of a slider 6 so as to collide with this slide 6. Consequently, even if an air flow rate of a flow of the auxiliary air branched off in two directions, valve closing direction A and opening direction B, of the slider 6 in the air passage 2 is varied according to opening of an air-cut valve body 19B, valve closing torque of the slider 6 is regularly varied, so that the idling control valve is able to have such an auxiliary air flow characteristic that depends on only the duty of a control pulse. With this constitution, a flow characteristic of auxiliary air quantity can be stabilized, and thus idle stability is improvable. |
