The invention provides an automatic transmission hydraulic transmission system, which includes a low-pressure hydraulic pump and a high-pressure hydraulic pump. The hydraulic pressure generated by the low-pressure hydraulic pump can be transmitted to the low-pressure part through the low-pressure pipeline, the hydraulic pressure generated by the high-pressure hydraulic pump can be transmitted to the high-pressure part through the high-pressure pipeline, the low-pressure hydraulic pump and the high-pressure hydraulic pump are driven by a driving shaft, and the high-pressure pipeline is provided with a storage device The accumulator of the oil produced by the high-pressure hydraulic pump is connected with a bypass between the high-pressure pipeline and the low-pressure pipeline. The bypass is equipped with an on-off valve. When the accumulator's energy storage value is lower than the preset value, the on-off valve is in the closed state. The hydraulic pressure produced by the high-pressure hydraulic pump is transmitted to the high-pressure part through the high-pressure pipeline. When the accumulator's energy storage value is higher than the preset value, the on-off valve is in the open state, The hydraulic pressure produced by the high-pressure hydraulic pump is successively transmitted to the low-pressure part through the bypass and low-pressure pipeline. The hydraulic transmission system of the automatic transmission has higher use efficiency and can reduce energy consumption.
【技术实现步骤摘要】
一种自动变速器液压输送系统
本专利技术涉及汽车领域,特别是涉及一种自动变速器液压输送系统。
技术介绍
变速器是用来改变来自发动机的转速和转矩的机构。变速器分为自动变速器和手动变速器。自动变速器一般由液力变扭器、行星齿轮和液压输送系统组成,通过液力传递和齿轮组合的方式来达到变速变矩。近来的自动变速器的液压输送系统包括低压液压泵和高压液压泵,由低压液压泵产生的液压通过低压管路输送到低压部(即,变速器的需要冷却的装置、变速器的需要润滑的装置和液力变扭器等),由高压液压泵产生的液压通过高压管路输送到高压部(即,离合器、换挡制动器和驻车机构等)。但是现有的液压输送系统的低压管路和高压管路相互独立,互不干涉。高压液压泵又需要不断工作为高压部输送高压液压,这导致了不必要的能源浪费。
技术实现思路
本专利技术的目的在于提供一种使用效率更高,能减少能源消耗的自动变速器液压输送系统。本专利技术提供一种自动变速器液压输送系统,包括低压液压泵和高压液压泵,由低压液压泵产生的液压可以通过低压管路输送到低压部,由高压液压泵产生的液压可以通过高压管路输送到高压部,低压液压泵和高压液压泵由一根驱动轴驱动,高压管路上设有用于储存由高压液压泵产生的油液的蓄能器,高压管路和低压管路之间连接有旁路,旁路上设有开关阀,在蓄能器的蓄能值低于预设值时,开关阀处于关闭状态,由高压液压泵产生的液压通过高压管路输送到高压部,在蓄能器的蓄能值高于预设值时,开关阀处于打开状态,由高压液压泵产生的液压依次经由旁路、低压管路而输送到低压部。 ...
【技术保护点】
1.一种自动变速器液压输送系统,包括低压液压泵和高压液压泵,由低压液压泵产生的液压可以通过低压管路输送到低压部,由高压液压泵产生的液压可以通过高压管路输送到高压部,其特征在于,所述低压液压泵和所述高压液压泵由一根驱动轴驱动,所述高压管路上设有用于储存由高压液压泵产生的油液的蓄能器,所述高压管路和所述低压管路之间连接有旁路,所述旁路上设有开关阀,在所述蓄能器的蓄能值低于预设值时,所述开关阀处于关闭状态,由高压液压泵产生的液压通过高压管路输送到高压部,在所述蓄能器的蓄能值高于预设值时,所述开关阀处于打开状态,由高压液压泵产生的液压依次经由所述旁路、所述低压管路而输送到低压部。/n
【技术特征摘要】
1.一种自动变速器液压输送系统,包括低压液压泵和高压液压泵,由低压液压泵产生的液压可以通过低压管路输送到低压部,由高压液压泵产生的液压可以通过高压管路输送到高压部,其特征在于,所述低压液压泵和所述高压液压泵由一根驱动轴驱动,所述高压管路上设有用于储存由高压液压泵产生的油液的蓄能器,所述高压管路和所述低压管路之间连接有旁路,所述旁路上设有开关阀,在所述蓄能器的蓄能值低于预设值时,所述开关阀处于关闭状态,由高压液压泵产生的液压通过高压管路输送到高压部,在所述蓄能器的蓄能值高于预设值时,所述开关阀处于打开状态,由高压液压泵产生的液压依次经由所述旁路、所述低压管路而输送到低压部。
2.如权利要求1所述的自动变速器液压输送系统,其特征在于,该自动变速器液压输送系统还包括一控制器,所述控制器和所述开关阀信号连接,所述蓄能器内设有传感器,所述传感器将检测到的所述蓄能器的蓄能值信号发送给所述控制器,所述控制器根据接收到的所述蓄能值信号控制所述开关阀的开闭。
3.如权利要求1所述的自动变速器液压输送系统,其特征在于,在所述高压管路上设有位于所述蓄能器和所述开关阀之间的单向阀,所述单向阀的流通方向为从所述高压液压泵至所述蓄能器。
...
【专利技术属性】
技术研发人员:马文星,邱志凌,
申请(专利权)人:宁波上中下自动变速器有限公司,浙江吉利控股集团有限公司,
类型:发明
国别省市:浙江;33
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