公开(公告)号：US20180363540A1

公开(公告)日：2018-12-20

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 ,  F02B37/00 ,  F02B53/08 ,  F02B61/04

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 (PRGT)a (rVC)b (TAIC/TBIC)(T1/TA)

公开(公告)号：US20180346142A1

公开(公告)日：2018-12-06

申请号：US16004991

申请日：2018-06-11

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Richard ULLYOTT ,  Anthony JONES ,  Andre JULIEN ,  Jean THOMASSIN

IPC: B64D41/00 ,  H02K7/18 ,  F02C3/10 ,  F01C11/00

CPC classification number: B64D41/00 ,  B64D2013/0611 ,  F01C1/22 ,  F01C11/008 ,  F02C3/10 ,  H02K7/1815 ,  H02K7/1823 ,  Y02T50/44 ,  Y02T50/53

Abstract: An auxiliary power unit having internal combustion engine(s) in driving engagement with an engine shaft, a generator having a generator shaft drivingly engaged to the engine shaft, a compressor having an outlet in communication with the internal combustion engine inlet, and a turbine having an inlet in communication with the internal combustion engine outlet. The turbine may be a first stage turbine, and the assembly may include a second stage turbine having an inlet in communication with the first stage turbine outlet. A method of providing electrical power to an aircraft is also discussed.

公开(公告)号：US20180209332A1

公开(公告)日：2018-07-26

申请号：US15926568

申请日：2018-03-20

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Michael GAUL ,  Andre JULIEN ,  Bruno VILLENEUVE

IPC: F02B53/12 ,  F02B19/10 ,  F02B19/12 ,  F02B53/02 ,  F02M53/02 ,  F02P19/02 ,  F01C1/22 ,  F02B55/08 ,  F02B53/10 ,  F02B53/00 ,  F02B55/14

CPC classification number: F02B53/12 ,  F01C1/22 ,  F02B19/108 ,  F02B19/12 ,  F02B53/02 ,  F02B53/10 ,  F02B55/08 ,  F02B55/14 ,  F02B2053/005 ,  F02M53/02 ,  F02P19/02 ,  Y02T10/125 ,  Y02T10/17

Abstract: A rotary engine includes an insert having a pilot subchamber defined therein and communicating with the internal cavity of the engine. A pilot fuel injector has a tip in communication with the pilot subchamber. An ignition element extends into an element cavity defined through the insert adjacent the pilot subchamber. The element cavity is in communication with the pilot subchamber through a communication opening defined in the insert between the element cavity and the pilot subchamber. The communication opening is smaller than a portion of the ignition element adjacent the communication opening such as to prevent the portion of the ignition element from completely passing through the communication opening upon breaking off of the portion of the ignition element from a remainder of the ignition element. An outer body for a rotary engine and a method of combusting fuel in a rotary engine are also provided.

公开(公告)号：US20180202358A1

公开(公告)日：2018-07-19

申请号：US15406989

申请日：2017-01-16

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Andre JULIEN ,  Jean THOMASSIN ,  Serge DUSSAULT

IPC: F02C5/06 ,  F02C9/18 ,  F02K3/06 ,  F02C7/36 ,  F02C7/18

CPC classification number: F02C5/06 ,  F01C1/22 ,  F02C5/02 ,  F02C7/185 ,  F02C7/36 ,  F02C9/18 ,  F02K3/06 ,  F05D2260/211 ,  F05D2260/40311

Abstract: A turbofan engine assembly including an internal combustion engine in fluid communication between a compressor and a turbine, the internal combustion engine having an engine shaft, a bypass duct surrounding the internal combustion engine, and a fan drivingly engaged to the engine shaft via a gearbox, the gearbox configured to increase an output speed of the fan relative to an input speed of the engine shaft.

公开(公告)号：US20180202354A1

公开(公告)日：2018-07-19

申请号：US15408784

申请日：2017-01-18

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Andre JULIEN ,  Edwin SCHULZ

IPC: F02B53/02 ,  F02B53/10 ,  F02B55/08

CPC classification number: F02B53/02 ,  F02B19/10 ,  F02B53/10 ,  F02B2053/005 ,  F02D41/0087 ,  Y02T10/125 ,  Y02T10/17

Abstract: A method of operating a rotary engine including a rotor engaged to a shaft and rotationally received in a housing to define a plurality of working chambers of variable volume, including delivering a pilot quantity of fuel into a pilot cavity in successive communication with the working chambers, igniting the pilot quantity of fuel within the pilot cavity, and delivering a main quantity of fuel into the working chambers downstream of the successive communication of the pilot cavity with the working chambers, where at least one of the pilot quantity and the main quantity is varied between successive rotations of the shaft.

公开(公告)号：US20180106225A1

公开(公告)日：2018-04-19

申请号：US15294285

申请日：2016-10-14

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Luc DIONNE ,  Bruno VILLENEUVE ,  Maxime COURTOIS ,  Behzad HAGSHENAS ,  Andre JULIEN

IPC: F02M35/10 ,  F02M35/024 ,  F02B53/14

Abstract: An inlet assembly for an auxiliary power unit for an aircraft, including a particle separator and a plenum having first and second inlets. A first duct configured to deliver air to an engine of the auxiliary power unit is in fluid communication with an outlet of the plenum. A second duct configured to deliver air to a compartment containing the auxiliary power unit is in fluid communication with the outlet of the plenum. The assembly is selectively configurable between a first configuration where the plenum is in fluid communication with the environment of the aircraft through the second inlet and through the particle separator, and a second configuration where the plenum is in fluid communication with the environment of the aircraft through the first inlet independently of the particle separator. An auxiliary power unit assembly and a method of feeding air to an auxiliary power unit assembly are also discussed.

公开(公告)号：US20180105283A1

公开(公告)日：2018-04-19

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: B64D41/00 ,  F02B33/34 ,  F02B39/04 ,  F02B53/14 ,  F02M35/04 ,  F04B39/16 ,  F01C13/04

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：US20180045110A1

公开(公告)日：2018-02-15

申请号：US15794492

申请日：2017-10-26

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean THOMASSIN ,  Andre JULIEN ,  Edwin SCHULZ ,  Michael LANKTREE

IPC: F02B53/06 ,  F01C20/06 ,  F01C20/10 ,  F01C20/24 ,  F01C21/08 ,  F02B53/02 ,  F01C1/22 ,  F01C21/18 ,  F01C21/10 ,  F02B55/16 ,  F02B53/04 ,  F01C11/00 ,  F01C21/06 ,  F02B53/00 ,  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 of controlling an air intake flow in a rotary engine having primary and secondary inlet ports, including positioning the secondary inlet port rearwardly of the primary inlet port and forwardly of the exhaust port along a direction of a revolution of the rotor, providing independently closable communications between an air source and the primary and secondary inlet ports, and controlling air intake flows between the air source and the primary and secondary inlet ports. Controlling air intake flows includes simultaneously allowing the air intake flow between the primary inlet port and the air source and between the secondary inlet port and the air source. Exhaust gases of the engine are purged with the air intake flow of the secondary inlet port. A rotary engine is also discussed.

公开(公告)号：US20170335762A1

公开(公告)日：2017-11-23

申请号：US15672698

申请日：2017-08-09

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Andre JULIEN

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

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：US20170074160A1

公开(公告)日：2017-03-16

申请号：US15363099

申请日：2016-11-29

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean THOMASSIN ,  Andre JULIEN ,  Edwin SCHULZ ,  Michael LANKTREE

IPC: F02B53/06 ,  F01C1/22 ,  F01C20/06 ,  F02B55/16 ,  F01C20/24 ,  F01C21/08 ,  F01C21/10 ,  F01C21/18 ,  F02B53/02 ,  F01C20/10

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 of controlling an air intake flow in a rotary engine having primary and secondary inlet ports, including positioning the secondary inlet port rearwardly of the primary inlet port and forwardly of the exhaust port along a direction of a revolution of the rotor, and controlling air intake flows communicating between an air source and the primary and secondary inlet ports. During engine start-up, a primary valve is closed to prevent the intake air flow between the primary inlet port and the air source and a secondary valve is opened to allow the intake air flow between the secondary inlet port and the air source. A rotary engine defining different compression ratios through actuation of a valve is also discussed.

Abstract translation: 一种控制具有主入口和次级入口的旋转发动机中的进气流的方法，包括将副进气口沿着转子的旋转方向定位在主入口向后和排气口的前方，并控制空气 进气流在空气源和主入口和次入口之间连通。 在发动机起动期间，主阀关闭以防止进气在主入口和空气源之间流动，并且次阀被打开以允许进气在次级进口和空气源之间流动。 还讨论了通过致动阀来限定不同压缩比的旋转发动机。