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公开(公告)号：US20100287924A1
公开(公告)日：2010-11-18
申请号：US12464993
申请日：2009-05-13
CPC分类号： F15B11/17 , F15B2211/20515 , F15B2211/20523 , F15B2211/20592 , F15B2211/30505 , F15B2211/4053 , F15B2211/41563 , F15B2211/41572 , F15B2211/428 , F15B2211/62 , F15B2211/6309
摘要： A dual pump hydraulic system is provided for a vehicle driven by an internal combustion engine. The system includes a first circuit with a first high pressure pump supplying hydraulic fluid to the first subsystem at a higher pressure. The system also includes a second circuit with a second lower pressure pump supplying hydraulic fluid to the second subsystem at a second pressure. A first valve controls communication between the first pump and the second circuit. A second valve is operable to communicate the second pump with the first circuit when pressure in the first circuit is less than a second threshold pressure or when commanded by a control unit. A check valve prevents fluid flow from the first circuit back into to the second valve.
摘要翻译： 为由内燃机驱动的车辆提供双泵液压系统。 该系统包括第一电路，其具有在较高压力下向第一子系统供应液压流体的第一高压泵。 该系统还包括第二回路，第二低压泵在第二压力下向第二子系统提供液压流体。 第一阀控制第一泵和第二回路之间的连通。 当第一回路中的压力小于第二阈值压力或当由控制单元命令时，第二阀可操作以将第二泵与第一回路连通。 止回阀防止流体从第一回路流入第二阀。
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公开(公告)号：US08347618B2
公开(公告)日：2013-01-08
申请号：US12464993
申请日：2009-05-13
CPC分类号： F15B11/17 , F15B2211/20515 , F15B2211/20523 , F15B2211/20592 , F15B2211/30505 , F15B2211/4053 , F15B2211/41563 , F15B2211/41572 , F15B2211/428 , F15B2211/62 , F15B2211/6309
摘要： A dual pump hydraulic system is provided for a vehicle driven by an internal combustion engine. The system includes a first circuit with a first high pressure pump supplying hydraulic fluid to the first subsystem at a higher pressure. The system also includes a second circuit with a second lower pressure pump supplying hydraulic fluid to the second subsystem at a second pressure. A first valve controls communication between the first pump and the second circuit. A second valve is operable to communicate the second pump with the first circuit when pressure in the first circuit is less than a second threshold pressure or when commanded by a control unit. A check valve prevents fluid flow from the first circuit back into to the second valve.
摘要翻译： 为由内燃机驱动的车辆提供双泵液压系统。 该系统包括第一电路，其具有在较高压力下向第一子系统供应液压流体的第一高压泵。 该系统还包括第二回路，第二低压泵在第二压力下向第二子系统提供液压流体。 第一阀控制第一泵和第二回路之间的连通。 当第一回路中的压力小于第二阈值压力或当由控制单元命令时，第二阀可操作以将第二泵与第一回路连通。 止回阀防止流体从第一回路流入第二阀。
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