The invention discloses a control valve assembly structure with a throttling nozzle. The control valve assembly structure with the throttling nozzle comprises a bushing, wherein a fuel oil inlet and afuel oil outlet are formed in the bushing in the length direction in sequence; a valve is arranged in the bushing; a fuel oil through groove, the width of which is greater than the distance between the fuel oil inlet and the fuel oil outlet, is formed in the valve; a pressure through hole I is formed in the axis of the valve in an axial direction; one end of the pressure through hole I extends tothe end part of the valve and is connected to a pressure cavity formed between the end part of the valve and the inner bottom surface of the bushing; a pressure through hole II which is connected tothe fuel oil through hole is formed in one side surface of the pressure through hole I; the throttling nozzle with the U-shaped cross section is formed in the end part of the pressure through hole I;and a throttling orifice, the diameter of which is less that the diameter of the pressure through hole, I is formed in the bottom of the throttling nozzle. The control valve assembly structure with the throttling nozzle has the characteristics of being less affected by oil pressure fluctuations, being beneficial to the stable oil supply of a control system, and being capable of improving the running stability of an engine and prolonging the service life of the engine.
本发明公开了一种带节流嘴的控制活门组件结构,包括有衬套,衬套上沿长度方向依次分布有燃油进孔和燃油出孔,衬套内设有活门,活门上设有宽度大于燃油进孔和燃油出孔之间间距的燃油通槽,活门的轴心沿轴向设有压力通孔一,压力通孔一的一端延伸至活门的端部并与活门端部与衬套内底面之间形成的压力腔导通,压力通孔一侧面设有与燃油通槽导通的压力通孔二;所述压力通孔一的端部设有截面呈U型的节流嘴,节流嘴的底部设有孔径小于压力通孔一的孔径的节流孔。本发明具有受油压波动影响小,利于控制系统稳定供油,可提高发动机运行平稳性和延长其使用寿命的特点。
Control valve assembly structure with throttling nozzle
一种带节流嘴的控制活门组件结构
2020-11-06
Patent
Electronic Resource
Chinese
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