公开(公告)号：US20210062772A1

公开(公告)日：2021-03-04

申请号：US16558847

申请日：2019-09-03

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sebastien BERGERON ,  Etienne PLAMONDON ,  Jean-Gabriel GAUVREAU ,  Benjamin RENAUD

IPC: F02M63/02 ,  F02M55/02 ,  F02B53/10 ,  F02B61/04

Abstract: A method of operating an aircraft engine of an aircraft, the aircraft engine having a common-rail fuel injection system for injecting fuel into a combustion chamber of the aircraft engine, including: pressurizing fuel for circulation through the common-rail injection system; circulating a portion of the pressurized fuel through a motive flow inlet of an ejector pump; and entraining a flow through the ejector pump with the portion of the pressurized fuel circulating through the motive flow inlet.

公开(公告)号：US20200300179A1

公开(公告)日：2020-09-24

申请号：US16361819

申请日：2019-03-22

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： David WADDLETON ,  Benjamin RENAUD ,  Sebastien BERGERON ,  Etienne PLAMONDON ,  Jean-Gabriel GAUVREAU

IPC: F02C9/28 ,  F02C9/30 ,  F02C7/22 ,  F04D15/00

Abstract: A rotodynamic pump for pumping a fluid includes an impeller, a housing surrounding the impeller, and a pressure regulating mechanism. The pressure regulating mechanism is configured to adjust the clearance between the impeller and the impeller housing to regulate pressure of the fluid downstream of the impeller. A method of regulating the delivery pressure is also disclosed.

公开(公告)号：US20200232432A1

公开(公告)日：2020-07-23

申请号：US16294160

申请日：2019-03-06

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sebastien BERGERON ,  Etienne PLAMONDON ,  Jean-Gabriel GAUVREAU ,  Benjamin RENAUD

IPC: F02M55/02 ,  F02M63/02 ,  F02M37/36 ,  F02B53/10 ,  F02M37/30

Abstract: There is disclosed a method of de-icing a component of an engine assembly having a common-rail fuel injection system, including: pressurizing fuel to circulate the fuel through the common-rail injection system; drawing a portion of the fuel upstream of common-rail injectors of the common-rail injection system and directing a remainder of the fuel toward the common-rail injectors; and transferring heat from the drawn portion of the fuel to the component.

公开(公告)号：US20200232409A1

公开(公告)日：2020-07-23

申请号：US16352030

申请日：2019-03-13

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Etienne PLAMONDON ,  Sebastien BERGERON ,  Benjamin RENAUD ,  Jean-Gabriel GAUVREAU

IPC: F02D41/38 ,  F02D41/30 ,  F02D7/00 ,  F02M99/00

Abstract: There is disclosed a method of operating an engine assembly including a combustion engine and a common-rail injector. The method includes: injecting fuel into a combustion chamber of the combustion engine via the common-rail injector thereby generating a backflow of fuel; and powering an actuator using at least a portion of the backflow of fuel. An engine assembly including the combustion engine is disclosed; the engine assembly having a fuel circuit fluidly connecting a fuel source, the common-rail injector, and the second injector outlet together. The fuel circuit has an actuator sub-circuit operatively connected to an outlet of the common-rail injector and an actuator fluidly connected to the actuator sub-circuit.