The invention discloses a two-stage pressure variable displacement oil pump, in which the regulating ring and pin shaft are articulated on the pump body, and can swing around the pin shaft; the rotor and the driving shaft are installed in the regulating ring, and the blade rotates with the rotor; and the outer surface of the regulating ring relative to the pin shaft articulation has three sliding sealing surfaces with the pump body, and the pump body and the regulating ring are arranged between the pump body and the regulating ring. Three oil cavities are separated: near Spring oil chamber, far spring oil chamber and swing oil chamber. The volume of near Spring oil chamber is larger than that of far spring oil chamber. When the engine operates at low speed, the NEAR-SPRING oil chamber enters the oil and the far-spring oil chamber enters the oil channel closes; when the engine operates at high speed, the NEAR-SPRING oil chamber and the far-spring oil chamber enter the oil at the same time; the adjusting ring compression reset spring rotates clockwise around the pin shaft hinge, adjusting the eccentricity between the rotor and the driving shaft in the adjusting ring; realizing the oil pump change; Displacement. In the prior art, the oil supply of the common lubricating oil pump increases linearly with the rotational speed of the lubricating oil pump, and the excessive oil supply at high rotational speed increases the power consumption, and the excessive oil circulation accelerates the aging of the engine oil.
【技术实现步骤摘要】
一种二级压力变排量机油泵
本专利技术属于机械润滑与润滑油泵
,涉及一种二级压力变排量机油泵;特别适用于汽车发动机润滑。
技术介绍
普通的润滑油泵供油量随润滑油泵转速线性增长;但汽车发动机在低转速工况,需要润滑油泵提供足够的油量润滑发动机摩擦部件,高转速时过多的油量会增加功率消耗,并过多机油循环加速机油老化;探讨适于发动机润滑需求的变排量机油泵是工程技术人员不断研究与探索的课题。现有的变排量机油泵如图1所示,包括泵体1、驱动轴2、转子3、叶片4、调节环5、销轴6、复位弹簧7、调节密封元件8;调节环与销轴铰接安装在泵体上,调节环可绕销轴摆动;转子安装在驱动轴上,转子3与驱动轴2安装在调节环5中,转子3上具有叶片滑槽;叶片4安装在转子3的滑槽内,叶片4随转子3一同转动,并可在离心力作用下沿滑槽向圆周侧滑动;与销轴6铰接处相对的调节环5外表面有两段与泵体1滑动配合的密封面,并将泵体1与调节环5间分隔出近弹簧油腔1a、远弹簧油腔1b两个油腔;远弹簧油腔容积大于近弹簧油腔;发动机主油道与近弹簧油腔、远弹簧相连通;发动机低速工作时,远弹簧油腔1b、近弹簧油腔1a同时进油; ...
【技术保护点】
1.一种二级压力变排量机油泵;其特征在于:包括泵体、驱动轴、转子、叶片、调节环、销轴、复位弹簧;调节环与销轴铰接安装在泵体上,调节环可绕销轴摆动;转子安装在驱动轴上,转子与驱动轴安装在调节环中,转子上具有叶片滑槽;叶片安装在转子的滑槽内,叶片随转子一同转动,并可在离心力作用下沿滑槽向圆周侧滑动;与销轴铰接处相对的调节环外表面有三段与泵体滑动配合的密封面,并将泵体与调节环间分隔出近弹簧油腔、远弹簧油腔、摆转腔三个油腔,发动机主油道与远弹簧油腔相连通,发动机主油道与近弹簧油腔相连通;近弹簧油腔容积大于远弹簧油腔;发动机主油道与近弹簧油腔、远弹簧油腔相连通。
【技术特征摘要】
1.一种二级压力变排量机油泵;其特征在于:包括泵体、驱动轴、转子、叶片、调节环、销轴、复位弹簧;调节环与销轴铰接安装在泵体上,调节环可绕销轴摆动;转子安装在驱动轴上,转子与驱动轴安装在调节环中,转子上具有叶片滑槽;叶片安装在转子的滑槽内,叶片随转子一同转动,并可在离心力作用下沿滑槽向圆周侧滑动;与销轴铰接处相对的调节环外表面有三段与泵体滑动配合的密封面,并将泵体与调节环间分隔出近弹簧油腔、远弹簧油腔、摆转腔三个油腔,发动机主油道与远弹簧油腔相连通,发动机主油道与近弹簧油腔相连通;近弹簧油腔容积大于远...
【专利技术属性】
技术研发人员:刘杰,
申请(专利权)人:富奥汽车零部件股份有限公司,
类型:发明
国别省市:吉林,22
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