公开(公告)号：US09353688B2

公开(公告)日：2016-05-31

申请号：US13828199

申请日：2013-03-14

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Paul W. Futa ,  Edward Zielinski ,  Larry Portolese ,  David Tuttle

IPC: F02C7/22 ,  F02C7/236

CPC classification number: F02C7/22 ,  F02C7/236

Abstract: A gas turbine engine fuel supply system includes a primary gear pump, a secondary gear pump, and a pump bypass valve. The primary gear pump always actively delivers fuel to the downstream fuel system, and is sized to supply 100% of the burn flow needed at a select low demand condition. The secondary gear pump is sized to make up the remainder of the flow at high demand conditions, and actively delivers fuel to the downstream fuel system only during those conditions. To supply discharge fuel pressures in excess of gear pump capability, a supercharger pump is disposed upstream of the primary and secondary gear pumps. The pump bypass valve is configured to regulate fuel pressure at the primary gear pump outlet to one of a plurality of preset differential pressures above one of a plurality of fuel load pressures and prevents reverse pressurization of the gear pumps.

Abstract translation: 燃气涡轮发动机燃料供给系统包括主齿轮泵，副齿轮泵和泵旁通阀。 主齿轮泵总是主动地将燃料输送到下游燃料系统，并且其尺寸适于在选择的低需求条件下提供100％所需的燃烧流量。 次级齿轮泵的尺寸可以在高需求条件下弥补剩余的流量，并且仅在这些条件下才能将燃料积极地输送到下游燃料系统。 为了提供超过齿轮泵能力的排出燃料压力，增压泵设置在主齿轮泵和副齿轮泵的上游。 泵旁通阀被配置为将主齿轮泵出口处的燃料压力调节到多个燃料负载压力之一的多个预设压差中的一个，并且防止齿轮泵的反向加压。

公开(公告)号：US10968832B2

公开(公告)日：2021-04-06

申请号：US15354340

申请日：2016-11-17

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Larry Portolese ,  Paul W. Futa ,  Edward Zielinski ,  David Tuttle ,  Eric Arnett

IPC: F02C7/232 ,  F02C3/20 ,  F02C9/26

Abstract: Embodiments of a combined overspeed and fuel stream selector system are provided. In an embodiment, the assembly includes a conduit network, a Discharge Select Valve (DSV), and a shutoff valve. The DSV is fluidly coupled to a primary fuel inlet, a secondary fuel inlet, and a primary fuel outlet included in the conduit network. The shutoff valve is fluidly coupled between the primary fuel inlet and the primary fuel outlet. In a standard operation mode, the shutoff valve is maintained in an open position, while fuel received at the primary fuel inlet is directed through the shutoff valve, through the DSV, and to the primary fuel inlet. Conversely, in a backup operation mode, the shutoff valve is closed to block fuel flow from the primary fuel inlet to the primary fuel outlet, while the DSV directs fuel flow received at the secondary fuel inlet to the primary fuel outlet.

公开(公告)号：US20140196459A1

公开(公告)日：2014-07-17

申请号：US13828199

申请日：2013-03-14

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Paul W. Futa ,  Edward Zielinski ,  Larry Portolese ,  David Tuttle

IPC: F02C7/22

CPC classification number: F02C7/22 ,  F02C7/236

Abstract: A gas turbine engine fuel supply system includes a primary gear pump, a secondary gear pump, and a pump bypass valve. The primary gear pump always actively delivers fuel to the downstream fuel system, and is sized to supply 100% of the burn flow needed at a select low demand condition. The secondary gear pump is sized to make up the remainder of the flow at high demand conditions, and actively delivers fuel to the downstream fuel system only during those conditions. To supply discharge fuel pressures in excess of gear pump capability, a supercharger pump is disposed upstream of the primary and secondary gear pumps. The pump bypass valve is configured to regulate fuel pressure at the primary gear pump outlet to one of a plurality of preset differential pressures above one of a plurality of fuel load pressures and prevents reverse pressurization of the gear pumps.

Abstract translation: 燃气涡轮发动机燃料供给系统包括主齿轮泵，副齿轮泵和泵旁通阀。 主齿轮泵总是主动地将燃料输送到下游燃料系统，并且其尺寸适于在选择的低需求条件下提供100％所需的燃烧流量。 次级齿轮泵的尺寸可以在高需求条件下弥补剩余的流量，并且仅在这些条件下才能将燃料积极地输送到下游燃料系统。 为了提供超过齿轮泵能力的排出燃料压力，增压泵设置在主齿轮泵和副齿轮泵的上游。 泵旁通阀被配置为将主齿轮泵出口处的燃料压力调节到多个燃料负载压力之一的多个预设压差中的一个，并且防止齿轮泵的反向加压。