公开(公告)号：US12276202B2

公开(公告)日：2025-04-15

申请号：US17219171

申请日：2021-03-31

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sebastien Bergeron ,  Marion Daniel

IPC: F01D25/20 ,  F01M11/00 ,  F01M11/06 ,  F16N19/00

Abstract: Aircraft engine oil tanks, lubrication systems, and associated methods are provided. The oil tank includes a first tank portion defining a first volume for holding oil and a second tank portion defining a second volume for holding oil, in fluid communication with the first volume. The first tank portion includes an oil outlet for delivering oil to a lubrication load via a pump. The first volume is in fluid communication with a vent opening for venting the oil tank. At least part of the second tank portion is disposed higher than the vent opening for retaining a quantity of oil inside the oil tank during a negative-g force flight condition and facilitate the recovery of the lubrication system following the negative-g force flight condition.

公开(公告)号：US11174732B1

公开(公告)日：2021-11-16

申请号：US16872937

申请日：2020-05-12

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Etienne Plamondon ,  Sebastien Bergeron ,  Jean Thomassin

IPC: F01C21/04 ,  F02M47/02 ,  F02B55/08 ,  F02B55/16 ,  F02M57/02 ,  F02B53/00 ,  F02M59/46 ,  F02M59/10

Abstract: A rotary internal combustion engine (ICE) has: a housing defining a rotor cavity; a rotor received within the rotor cavity to define working chambers of variable volume around the rotor, the rotor having circumferentially spaced peripheral apex seals biased radially outwardly in sliding engagement against a peripheral wall of the housing to separate the working chambers from one another, the housing having a fluid passage defined therethrough and opening into an inner surface of the peripheral wall; and an injector having a lubricant inlet hydraulically connected to a lubricant source, an actuation inlet hydraulically connected to a source of an actuation fluid, and a lubricant outlet, the injector having an open state in which the lubricant outlet is in fluid flow communication with the fluid passage upon the actuation fluid received within the injector and a closed state in which the lubricant outlet is disconnected from the fluid passage.

公开(公告)号：US11125185B2

公开(公告)日：2021-09-21

申请号：US16263113

申请日：2019-01-31

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sebastien Bergeron ,  Etienne Plamondon ,  Andre Julien

IPC: F02G5/02 ,  F01C1/22 ,  F01P3/12 ,  F01P3/20 ,  F01P5/12 ,  F01P5/14 ,  F02B3/06 ,  F02C7/12

Abstract: There is disclosed an engine assembly for an aircraft, including: a combustion engine including a coolant circuit in heat exchange relationship with a heat sink, the heat sink including a heat exchanger and at least one component, the at least one component having a main function that differs from thermal exchange. A method of operating the system is also disclosed.

公开(公告)号：US11002185B2

公开(公告)日：2021-05-11

申请号：US16366116

申请日：2019-03-27

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sebastien Bergeron ,  Andre Julien

IPC: F02B65/00 ,  F02B73/00

Abstract: There is disclosed a method of operating an engine assembly, including: driving a load with an internal combustion engine and an output of a turbine section, the turbine section driven by combustion gases from an exhaust the internal combustion engine; and injecting fuel upstream of the turbine section and downstream of the exhaust of the internal combustion engine. An engine assembly having a secondary injector for injecting fuel upstream of the turbine section and downstream of the combustion engine is also disclosed.

公开(公告)号：US10773820B2

公开(公告)日：2020-09-15

申请号：US15969270

申请日：2018-05-02

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sebastien Bergeron ,  Pierre Gauvin ,  Johnny Vinski ,  Genevieve McMurray

IPC: B64D37/08 ,  B64D37/10 ,  B64D33/00 ,  B64D37/14 ,  B64D37/32 ,  B65D90/34

Abstract: A liquid tank system comprises a main liquid tank, an outlet communicating between a fluid circuit and the main liquid tank, an inlet communicating between the fluid circuit and the main liquid tank, and an auxiliary cavity. First vent passage and second vent passage(s) communicate between the main liquid tank and the auxiliary cavity and allows liquid and gas to flow from the main liquid tank to the auxiliary cavity. The second vent passage has a flow control device regulating flow through the second vent passage and having a set point at which it allows liquid and gas to flow from the main liquid tank to the auxiliary cavity only when a pressure in the main liquid tank is beyond a threshold. The liquid tank system has an attitude envelope in which the liquid tank system is configured such that, in use, the flow control device blocks flow through the second vent passage when an end of the first vent passage in the main liquid tank is above a liquid level, and the flow control device allows gas and/or fluid flow through the second vent passage when main fluid tank pressure is above the threshold and the end of the first vent passage in the main liquid tank is below the liquid level.

公开(公告)号：US10507410B2

公开(公告)日：2019-12-17

申请号：US15400560

申请日：2017-01-06

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Marcin Czajkowski ,  Sebastien Bergeron ,  Filip Adam Pulter ,  Johnny Vinski

IPC: B01D45/06 ,  B01D45/08 ,  B01D46/12 ,  B01D45/04 ,  B01D50/00 ,  F01D25/18 ,  B01D19/00

Abstract: The described air-oil separation apparatus for an oil system of a gas turbine engine includes an oil tank having an oil impingement surface disposed on a tank bottom proximate an oil tank outlet and a centrifugal air-oil separator mounted within the oil tank. The centrifugal air-oil separator has an oil outlet that feeds an impingement nozzle having an outlet oriented, in operation, to eject an oil jet from the centrifugal air-oil separator to impinge the oil impingement surface at an intersection point spaced apart from the oil tank outlet.

公开(公告)号：US20180086475A1

公开(公告)日：2018-03-29

申请号：US15277640

申请日：2016-09-27

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Sebastien Bergeron ,  Pierre Gauvin ,  Johnny Vinski ,  Genevieve McMurray

IPC: B64D37/08 ,  B65D90/34 ,  B64D37/14 ,  B64D37/32

CPC classification number: B64D37/08 ,  B64D37/14 ,  B64D37/32 ,  B65D90/34 ,  Y10T137/86324

Abstract: A liquid tank system comprises a main liquid tank, an outlet communicating between a fluid circuit and the main liquid tank, an inlet communicating between the fluid circuit and the main liquid tank, and an auxiliary cavity. First vent passage and second vent passage(s) communicate between the main liquid tank and the auxiliary cavity and allows liquid and gas to flow from the main liquid tank to the auxiliary cavity. The second vent passage has a flow control device regulating flow through the second vent passage and having a set point at which it allows liquid and gas to flow from the main liquid tank to the auxiliary cavity only when a pressure in the main liquid tank is beyond a threshold. The liquid tank system has an attitude envelope in which the liquid tank system is configured such that, in use, the flow control device blocks flow through the second vent passage when an end of the first vent passage in the main liquid tank is above a liquid level, and the flow control device allows gas and/or fluid flow through the second vent passage when main fluid tank pressure is above the threshold and the end of the first vent passage in the main liquid tank is below the liquid level.