公开(公告)号：US10539065B2

公开(公告)日：2020-01-21

申请号：US15624257

申请日：2017-06-15

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Andre Julien ,  Edwin Schulz ,  Michael Lanktree ,  Serge Dussault

IPC: F02B29/04 ,  F02B61/04 ,  F02B53/08 ,  F02B37/00 ,  F02B53/00

Abstract: A method of operating an engine assembly receiving fuel, including admitting atmospheric air at a temperature T1 through an inlet of a compressor having a pressure ratio of PRGT, compressing the air in the compressor, cooling the compressed air from the compressor through an intercooler to cool the air from a temperature TBIC to a temperature TAIC, delivering the cooled compressed air from the intercooler to an inlet of an intermittent internal combustion engine having an effective volumetric compression ratio rVC, and further compressing the air in the intermittent internal combustion engine before igniting the fuel, where ( PR GT ) a ⁢ ( r VC ) b ⁢ ( T AIC T BIC ) ⁢ ( T 1 T A )

公开(公告)号：US10533489B2

公开(公告)日：2020-01-14

申请号：US15708442

申请日：2017-09-19

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean Thomassin ,  Sebastien Bolduc ,  Bruno Villeneuve ,  Stephane Berube ,  Mike Fontaine ,  David Gagnon-Martin ,  Andre Julien ,  Mark Cunningham ,  Serge Lafortune ,  Pierre-Yves Legare

IPC: F02B29/04 ,  F01C1/22 ,  F01C11/00 ,  F01D13/00 ,  F02K5/00 ,  F02C6/12 ,  F02B33/34 ,  F02B41/10 ,  F02B53/00 ,  F02B61/04

Abstract: A compound engine assembly including a common air conduit having an inlet in fluid communication with ambient air, a compressor, at least one internal combustion engine having an inlet in fluid communication with an outlet of the compressor, a turbine section having an inlet in fluid communication with an outlet of the at least one internal combustion engine, the turbine section configured to compound power with the at least one internal combustion engine, and at least one heat exchanger in fluid communication with the common air conduit, each of the at least one heat exchanger configured to circulate a fluid of the engine assembly in heat exchange relationship with an airflow from the common air conduit circulating therethrough. The compressor has an inlet in fluid communication with the common air conduit upstream of the at least one heat exchanger. The internal combustion engine may be a reciprocating engine.

公开(公告)号：US10513344B2

公开(公告)日：2019-12-24

申请号：US15294298

申请日：2016-10-14

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Luc Dionne ,  Bruno Villeneuve ,  Maxime Courtois ,  Behzad Hagshenas ,  Andre Julien

IPC: B01D46/42 ,  B01D71/48 ,  F02C7/04 ,  F02C7/047 ,  F02C7/143 ,  F02C7/05 ,  B64D41/00 ,  F04B39/16 ,  F02B53/14 ,  F01C13/04 ,  F02B33/34 ,  F02B39/04 ,  F02M35/04 ,  F01C1/22

Abstract: An auxiliary power unit assembly for an aircraft, including an engine assembly including an internal combustion engine, a first duct in fluid communication with an inlet of the internal combustion engine and configured to be in fluid communication with an environment of the aircraft, and a second duct configured to be in fluid communication with the environment. The second duct may be in fluid communication with an inlet of a compressor drivable by the internal combustion engine or with a compartment receiving the engine assembly. A filter extends across the first duct. The filter is removable from the first duct through an opening in a wall of the first duct, the opening accessible from an exterior of the engine assembly.

公开(公告)号：US10240521B2

公开(公告)日：2019-03-26

申请号：US15227496

申请日：2016-08-03

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Anthony Jones ,  Andre Julien ,  David Menheere ,  Jean Thomassin ,  Richard Ullyott ,  Daniel Van Den Ende

IPC: F02B39/04 ,  F02B39/10 ,  F02G3/00 ,  F02C5/00 ,  F02B53/14 ,  B64D41/00 ,  F02C6/12 ,  F02C7/32 ,  F02C7/36 ,  F02B33/40 ,  F02B37/10 ,  F02B37/24 ,  F02B39/12 ,  F02B61/06 ,  F02B63/04 ,  F02B53/00

Abstract: An auxiliary power unit for an aircraft includes a rotary intermittent internal combustion engine drivingly engaged to an engine shaft, a turbine section having an inlet in fluid communication with an outlet of the engine(s), the turbine section including at least one turbine compounded with the engine shaft, and a compressor having an inlet in fluid communication with an environment of the aircraft and an outlet in fluid communication with a bleed duct for providing bleed air to the aircraft, the compressor having a compressor rotor connected to a compressor shaft, the compressor shaft drivingly engaged to the engine shaft. The driving engagement between the compressor shaft and the engine shaft is configurable to provide at least two alternate speed ratios between the compressor shaft and the engine shaft.

公开(公告)号：US10145291B1

公开(公告)日：2018-12-04

申请号：US15729043

申请日：2017-10-10

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean Thomassin ,  Andre Julien ,  Serge Dussault

IPC: F02B19/10 ,  F02B53/00

Abstract: A method of combusting fuel, e.g. heavy fuel, in a rotary engine, including injecting a main quantity of fuel directly into a combustion chamber to form a first fuel-air mixture having a first air-fuel equivalence ratio λ higher than 1, injecting a pilot quantity of fuel into a pilot subchamber to form a second fuel-air mixture having a second air-fuel equivalence ratio λ smaller than the first air-fuel equivalence ratio, igniting the second fuel-air mixture within the pilot subchamber, using the ignited second fuel-air mixture from the pilot subchamber to ignite the first fuel-air mixture, and injecting a supplemental quantity of fuel directly into the combustion chamber after igniting the first fuel-air mixture, upstream of an exhaust port of the rotary engine with respect to a direction of rotation of the rotor. A rotary engine with interburner fuel injector is also discussed.

公开(公告)号：US09890649B2

公开(公告)日：2018-02-13

申请号：US15010634

申请日：2016-01-29

Applicant: Pratt & Whitney Canada Corp.

Inventor： Jean Thomassin ,  Marie-Claude Vallieres ,  Mike Fontaine ,  Andre Julien ,  John Perera

IPC: F01D9/00 ,  F01D9/04 ,  F01D5/02 ,  F01D5/12 ,  F02B37/00 ,  F02B53/08 ,  F01D1/02 ,  F02B53/00 ,  F01D17/12

CPC classification number: F01D9/041 ,  F01D1/026 ,  F01D5/02 ,  F01D5/12 ,  F01D17/12 ,  F02B37/00 ,  F02B53/08 ,  F02B2053/005 ,  F05D2220/40 ,  F05D2260/961 ,  Y02T10/144

Abstract: An inlet guide assembly for a turbine receiving a pulsed flow, including a duct having an internal volume, and an inlet port, first outlet nozzle and second outlet nozzle each communicating with the internal volume. The inlet port is configured to receive at least part of the pulsed flow. The first and second outlet nozzles each define a respective nozzle area communicating between the internal volume and a flow path of the turbine. The first and second outlet nozzles are spaced from one another with the first outlet nozzle located closer to the inlet port than the second outlet nozzle relative to a flow direction through the duct, the nozzle area of the first outlet nozzle being smaller than the nozzle area of the second outlet nozzle. A compound engine assembly and method of introducing a pulsed flow into a flow path of a turbine are also discussed.

公开(公告)号：US09540992B2

公开(公告)日：2017-01-10

申请号：US14152255

申请日：2014-01-10

Applicant: Pratt & Whitney Canada Corp.

Inventor： Jean Thomassin ,  Andre Julien ,  Edwin Schulz ,  Michael Lanktree

IPC: F02B53/00 ,  F02B53/06 ,  F02B53/04 ,  F01C1/22 ,  F01C20/06 ,  F01C20/10 ,  F01C20/24 ,  F01C21/18 ,  F01C11/00 ,  F01C21/06 ,  F01C21/08 ,  F01C21/10 ,  F04C29/00

CPC classification number: F02B53/06 ,  F01C1/22 ,  F01C11/006 ,  F01C20/06 ,  F01C20/10 ,  F01C20/24 ,  F01C21/06 ,  F01C21/08 ,  F01C21/106 ,  F01C21/18 ,  F01C21/183 ,  F02B53/02 ,  F02B53/04 ,  F02B55/16 ,  F02B2053/005 ,  F04C29/0092 ,  F04C2240/80

Abstract: A method and apparatus for controlling an air input in a rotary engine, including selectively controlling a plurality of inlet ports communicating with an internal combustion cavity of the engine, the ports located serially downstream of the exhaust port relative direction of a revolution of a rotor of the engine. The inlet ports are controlled to alter air intake at various engine operational stages, such as start up, idle, etc., to allow for varying operational requirements to be met. For example: when a power demand on the engine lower than a predetermined threshold, control may be effected by opening a primary inlet port and closing a secondary inlet port; and, when the power demand exceeds the predetermined threshold, control may be effected by opening the primary inlet port and opening the secondary inlet port, the secondary inlet port being located such as to be in communication with the exhaust port throughout portions of the revolution of the engine to purge exhaust gases of the engine.

Abstract translation: 一种用于控制旋转发动机中的空气输入的方法和装置，包括选择性地控制与发动机的内部燃烧腔相通的多个入口，排气口的下游侧的端口相对于转子转速的相对方向 引擎。 入口端口被控制以改变各种发动机操作阶段（例如起动，空转等）的进气口，以允许满足不同的操作要求。 例如：当发动机上的功率需求低于预定阈值时，可以通过打开主入口并关闭次级入口来实现控制; 并且当功率需求超过预定阈值时，可以通过打开主入口并打开次级入口来进行控制，次级入口位于与排气口连通的部分， 发动机来净化发动机的废气。

公开(公告)号：US11214381B2

公开(公告)日：2022-01-04

申请号：US15227501

申请日：2016-08-03

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Anthony Jones ,  Andre Julien ,  David Menheere ,  Jean Thomassin ,  Richard Ullyott ,  Daniel Van Den Hende

IPC: B64D33/10 ,  B64D41/00 ,  B64D33/08 ,  B64F5/20 ,  B64D15/06 ,  F01P3/20 ,  F01P7/16 ,  B64D33/02

Abstract: An aircraft heating assembly including an internal combustion engine having a liquid coolant system distinct from any fuel and lubricating system of the engine and including cooling passages in the internal combustion engine for circulating a liquid coolant from a coolant inlet to a coolant outlet, a coolant circulation path outside of the internal combustion engine and in fluid communication with the coolant inlet and the coolant outlet, and a heating element in heat exchange relationship with a portion of the aircraft to be heated. The coolant circulation path extends through a heat exchanger configured to remove a portion of a waste heat from the liquid coolant. The heating element is in heat exchange relationship with the coolant circulation path to receive another portion of the waste heat therefrom. A method of heating a portion of an aircraft is also discussed.

公开(公告)号：US11187146B2

公开(公告)日：2021-11-30

申请号：US16720064

申请日：2019-12-19

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Andre Julien

IPC: F02B55/14 ,  F02B55/02 ,  F02B37/00 ,  F01C1/22 ,  F01C21/06 ,  F01C21/08 ,  F01C21/18 ,  F01C11/00 ,  F01C20/06 ,  F01C20/10 ,  F01C20/24 ,  F01C21/10 ,  F04C29/00

Abstract: A compound engine system includes a rotary engine with rotating chambers, a compressor section in successive communication with the rotating chambers, and a turbine section in successive communication with the rotating chambers. The turbine section has an output shaft. The output shaft and the engine shaft are drivingly engaged to each other and wherein the turbine section has a power output corresponding to from 20% to 35% of a total power output of the compound engine system. A method of compounding power in a compound engine system is also discussed.

公开(公告)号：US11187143B2

公开(公告)日：2021-11-30

申请号：US16720059

申请日：2019-12-19

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Andre Julien ,  Edwin Schulz ,  Michael Lanktree ,  Serge Dussault

IPC: F02B29/04 ,  F02B37/00 ,  F02B37/10 ,  F02B39/04 ,  F02B41/10 ,  F02B53/04 ,  F02B53/08 ,  F02B61/04 ,  F01C1/22 ,  F02D41/00 ,  F02B53/00

Abstract: A method of operating an engine assembly receiving fuel, including admitting atmospheric air at a temperature T1 through an inlet of a compressor having a pressure ratio of PRGT, compressing the air in the compressor, cooling the compressed air from the compressor through an intercooler to cool the air from a temperature TBIC to a temperature TAIC, delivering the cooled compressed air from the intercooler to an inlet of an intermittent internal combustion engine having an effective volumetric compression ratio rVC, and further compressing the air in the intermittent internal combustion engine before igniting the fuel, where ( PR GT ) a ⁢ ( r VC ) b ⁢ ( T AIC T BIC ) ⁢ ( T 1 T A )