公开(公告)号：US20140251258A1

公开(公告)日：2014-09-11

申请号：US13789989

申请日：2013-03-08

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean THOMASSIN ,  Edwin SCHULZ

IPC: F02B19/12

CPC classification number: F02B19/12 ,  F02B19/1085 ,  F02B53/10 ,  F02D35/025 ,  F02D41/045 ,  F02D41/3094 ,  F02D41/403 ,  F02D2041/141 ,  F02D2200/501 ,  Y02T10/17

Abstract: There is described a system and method for controlling a temperature in the subchamber of a rotary engine. At least one first measurement of at least one engine operating parameter and a second measurement indicative of a present temperature in the subchamber are received. A setpoint for the temperature in the subchamber is computed from the at least one first measurement. In response to the second measurement, at least one control signal indicative of a request to adjust the present temperature towards the setpoint is generated and sent to the engine.

Abstract translation: 描述了一种用于控制旋转发动机的子室中的温度的系统和方法。 接收至少一个至少一个发动机操作参数的第一测量和指示子室中的当前温度的第二测量。 从至少一个第一测量计算子室中温度的设定值。 响应于第二测量，产生指示将当前温度调节到设定点的请求的至少一个控制信号并发送到发动机。

公开(公告)号：US20220023560A1

公开(公告)日：2022-01-27

申请号：US17381335

申请日：2021-07-21

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Francois BELLEVILLE ,  Jean THOMASSIN

IPC: A61M16/00

Abstract: There is provided a ventilator to ventilate an airway of a patient. The ventilator has a conduit having an inlet and an outlet, said outlet configured to be connected to said airway; a gas delivery element in fluid communication with said inlet, said gas delivery element configured to deliver air in a sequence of ventilation cycles, each ventilation cycle defined by a corresponding tidal volume to be delivered to said airway via said conduit, each tidal volume corresponding to a difference between a start volume and an end volume of said gas delivery element for that ventilation cycle; a pressure sensor monitoring pressure within said conduit; a controller communicatively coupled to said gas delivery element and said pressure sensor, said controller performing reducing said tidal volume between a first ventilation cycle and a successive second ventilation cycle contingent upon said pressure exceeding a pressure threshold in said first ventilation cycle.

公开(公告)号：US20210231033A1

公开(公告)日：2021-07-29

申请号：US17229964

申请日：2021-04-14

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Edwin SCHULZ ,  Etienne PLAMONDON ,  Jean THOMASSIN

IPC: F01M11/02 ,  F01C21/04 ,  F01M1/02 ,  F01M5/00 ,  F02B53/00 ,  F02B55/02 ,  F02B55/08

Abstract: A rotary internal combustion engine with a housing having a fluid passage defined therethrough opening into a portion of its inner surface engaging each peripheral or apex seal of the rotor. An injector has an inlet for fluid communication with a pressurized lubricant source and a selectively openable and closable outlet in fluid communication with the fluid passage for delivering the pressurized lubricant to each seal through the fluid passage. A housing for a Wankel engine and a method of lubricating peripheral seals of a rotor in an internal combustion engine are also discussed.

公开(公告)号：US20200318547A1

公开(公告)日：2020-10-08

申请号：US16891187

申请日：2020-06-03

Applicant: PRATT & WHITNEY CANADA CORP.

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

IPC: F02C7/16 ,  B64D41/00 ,  B64D33/08

Abstract: An auxiliary power unit for an aircraft, having a compressor, an intercooler including first conduit(s) having an inlet in fluid communication with the compressor outlet and second conduit(s) configured for circulation of a coolant therethrough, an engine core having an inlet in fluid communication with an outlet of the first conduit(s), and a bleed conduit in fluid communication with the outlet of the first conduit(s) through a bleed air valve. The auxiliary power unit may include a generator in driving engagement with the shaft of the engine core to provide electrical power for the aircraft. A method of providing compressed air and electrical power to an aircraft is also discussed.

公开(公告)号：US20190186352A1

公开(公告)日：2019-06-20

申请号：US16282754

申请日：2019-02-22

Applicant: PRATT & WHITNEY CANADA CORP.

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

IPC: F02B63/04 ,  F01C21/18 ,  F02B53/14 ,  F02B37/00 ,  F01P5/06 ,  F01P5/04 ,  F01P1/06 ,  B64D33/08 ,  B64D41/00 ,  F02B63/06 ,  F02B67/04 ,  F02B53/02 ,  F02C7/18 ,  F02C7/14 ,  F02C5/00 ,  F02K5/00 ,  F01C1/22

CPC classification number: F02B63/04 ,  B64D33/08 ,  B64D41/00 ,  F01C1/22 ,  F01C21/18 ,  F01P1/06 ,  F01P5/04 ,  F01P5/06 ,  F02B37/00 ,  F02B53/02 ,  F02B53/14 ,  F02B63/06 ,  F02B67/04 ,  F02B2053/005 ,  F02C5/00 ,  F02C7/14 ,  F02C7/18 ,  F02K5/00 ,  F05D2220/50 ,  F05D2260/213 ,  Y02T10/144 ,  Y02T10/17 ,  Y02T50/53 ,  Y02T50/672 ,  Y02T50/676

Abstract: An auxiliary power unit for an aircraft, including an internal combustion engine having a liquid coolant system, a generator drivingly engaged to the internal combustion engine and having a liquid coolant system distinct from the liquid coolant system of the internal combustion engine, a first heat exchanger in fluid communication with the liquid coolant system of the internal combustion engine, a second heat exchanger in fluid communication with the liquid coolant system of the generator, an exhaust duct in fluid communication with air passages of the heat exchangers, and a fan received in the exhaust duct and rotatable by the internal combustion engine for driving a cooling air flow through the air passages. The liquid coolant system of the engine may be distinct from fuel and lubricating systems of the auxiliary power unit. A method of cooling a generator and an internal combustion engine is also discussed.

公开(公告)号：US20190186351A1

公开(公告)日：2019-06-20

申请号：US16284381

申请日：2019-02-25

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Anthony JONES ,  Andre JULIEN ,  David MENHEERE ,  Jean THOMASSIN ,  Richard ULLYOTT ,  Daniel VAN DEN ENDE

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

CPC classification number: F02B53/14 ,  B64D41/00 ,  F02B33/40 ,  F02B37/10 ,  F02B37/24 ,  F02B39/10 ,  F02B39/12 ,  F02B61/06 ,  F02B63/04 ,  F02B2053/005 ,  F02C6/12 ,  F02C7/32 ,  F02C7/36 ,  F05D2220/50 ,  F05D2260/40 ,  Y02T10/144 ,  Y02T50/44 ,  Y02T50/671

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：US20190128178A1

公开(公告)日：2019-05-02

申请号：US16227141

申请日：2018-12-20

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Anthony JONES ,  Andre JULIEN ,  David MENHEERE ,  Jean THOMASSIN ,  Richard ULLYOTT ,  Daniel VAN DEN ENDE

IPC: F02B53/14 ,  F02B53/04 ,  B64D41/00 ,  F02B63/04

CPC classification number: F02B53/14 ,  B64D41/00 ,  F02B53/04 ,  F02B63/04 ,  Y02T50/53

Abstract: An auxiliary power unit for an aircraft includes a rotary intermittent internal combustion engine, a turbine having an inlet in fluid communication with an outlet of the engine, the turbine compounded with the engine, a compressor having an inlet in fluid communication with an environment of the aircraft and an outlet in fluid communication with the aircraft, the compressor rotatable independently of the turbine, an electric motor drivingly engaged to the compressor, and a transfer generator drivingly engaged to the engine, the transfer generator and the electric motor being electrically connected to allow power transfer therebetween. The compressor or an additional compressor may be in fluid communication with the inlet of the engine. A method of operating an auxiliary power unit of an aircraft is also discussed.

公开(公告)号：US20190107039A1

公开(公告)日：2019-04-11

申请号：US16210465

申请日：2018-12-05

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean THOMASSIN ,  David MEISELS ,  Richard ULLYOTT

IPC: F01P11/10 ,  B64D33/10 ,  B64C9/38 ,  B64D27/10 ,  F01P5/10 ,  F01P3/20 ,  B64C21/06 ,  B64C21/04

Abstract: A method of providing active flow control for an aircraft includes cooling a liquid coolant in a heat exchanger by circulating a cooling airflow through the heat exchanger, and providing fluid communication between the cooling airflow and a boundary layer flow of at least one flight control surface of the aircraft. The cooling airflow affects the boundary layer flow of the flight control surface(s) to provide active flow control. A method of cooling an engine core of an engine assembly includes circulating a cooling fluid through the engine core, and cooling the cooling fluid with a cooling airflow used to provide active flow control to a flight control surface of the aircraft. An active flow control system for an aircraft is also discussed.

公开(公告)号：US20180306147A1

公开(公告)日：2018-10-25

申请号：US15496446

申请日：2017-04-25

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Bruno VILLENEUVE ,  Jean THOMASSIN

IPC: F02M35/10 ,  F02B37/16

CPC classification number: F02M35/10268 ,  F01C1/00 ,  F01P3/18 ,  F01P2001/005 ,  F02B33/40 ,  F02B37/16 ,  F02C6/12 ,  F02C7/057 ,  F02C7/14 ,  F02M35/10013 ,  F02M35/10157 ,  F02M35/10255 ,  F05D2260/213

Abstract: An engine assembly including an internal combustion engine configured to be received in an engine compartment and a heat exchanger having a first conduit fluidly connected to a fluid circuitry of the engine and a second conduit fluidly connecting an interior of the engine compartment to its environment. The first conduit is in heat exchange relationship with the second conduit. The assembly further includes a forced air system operable in use to provide an air flow from the environment to the outlet via the second conduit of the heat exchanger and the engine compartment. The assembly further includes a selector valve configurable to selectively fluidly connect an air intake of the internal combustion engine with the interior of the engine compartment in a first valve position and with the environment in a second valve position. A method for supplying air to an internal combustion engine is also discussed.

公开(公告)号：US20180187593A1

公开(公告)日：2018-07-05

申请号：US15908987

申请日：2018-03-01

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean THOMASSIN ,  Nigel DAVENPORT ,  Eugene GEKHT

IPC: F02B53/10 ,  F02B19/10

Abstract: A non-Wankel rotary engine having an insert in the peripheral wall of the outer body, the insert being made of a material having a greater heat resistance than that of the peripheral wall, having a subchamber defined therein and having an inner surface bordering the cavity, the subchamber communicating with the cavity through at least one opening defined in the inner surface and having a shape forming a reduced cross-section adjacent the opening, a pilot fuel injector having a tip received in the subchamber, an ignition element having a tip received in the subchamber, and a main fuel injector extending through the housing and having a tip communicating with the cavity at a location spaced apart from the insert.