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公开(公告)号：US20240175580A1
公开(公告)日：2024-05-30
申请号：US18058755
申请日：2022-11-24
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Etienne PLAMONDON
Abstract: A method of operating an aircraft power plant having an interburner fluidly connected between a combustion engine and a turbine, includes: operating the combustion engine at an air-fuel ratio corresponding to a nominal air-fuel ratio to generate combustion gases; receiving the combustion gases generated by the combustion engine into the interburner; increasing a temperature of the combustion gases generated by a combustion chamber of the combustion engine by lowering the air-fuel ratio to an ignition air-fuel ratio lower than the nominal air-fuel ratio; injecting fuel into the interburner to cause ignition of a mixture of the combustion gases and the fuel received into the interburner; and after ignition of the interburner, increasing the air-fuel ratio above the ignition air-fuel ratio.
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公开(公告)号：US20210355898A1
公开(公告)日：2021-11-18
申请号：US16872937
申请日：2020-05-12
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Etienne PLAMONDON , Sebastien BERGERON , Jean THOMASSIN
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.
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公开(公告)号：US20200157985A1
公开(公告)日：2020-05-21
申请号：US16750431
申请日：2020-01-23
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Edwin SCHULZ , Etienne PLAMONDON , Jean THOMASSIN
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.
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公开(公告)号：US20170362974A1
公开(公告)日：2017-12-21
申请号：US15185544
申请日：2016-06-17
Applicant: Pratt & Whitney Canada Corp.
Inventor： Edwin SCHULZ , Etienne PLAMONDON , Jean THOMASSIN
CPC classification number: F01M11/02 , F01C21/04 , F01M1/02 , F01M5/002 , F02B53/00 , F02B55/02 , F02B55/08 , F02B2053/005
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.
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公开(公告)号：US20200318644A1
公开(公告)日：2020-10-08
申请号：US16376320
申请日：2019-04-05
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： David WADDLETON , Benjamin RENAUD , Sebastien BERGERON , Etienne PLAMONDON , Jean-Gabriel GAUVREAU
Abstract: A method of controlling a delivery pressure of an aircraft engine fuel system includes operating a rotodynamic fuel pump hydraulically connected to the fuel system to pump a fluid from an inlet of the rotodynamic pump and out of an outlet of the rotodynamic pump for delivery to the fuel system. The method further includes varying an angular relationship between the inlet and the outlet of the pump to control the delivery pressure. An aircraft engine fuel system and a rotodynamic pump are also described.
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Patent Agency Ranking
公开(公告)号：US20200284205A1
公开(公告)日：2020-09-10
申请号：US16296988
申请日：2019-03-08
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： David WADDLETON , Benjamin RENAUD , Sebastien BERGERON , Etienne PLAMONDON , Jean-Gabriel GAUVREAU
Abstract: A liquid fuel system for an aircraft engine includes a first fuel supply conduit hydraulically connected to a fuel source, a second fuel supply conduit hydraulically connected to the engine, a fuel return conduit hydraulically connected to the second fuel supply conduit, and a fuel pump. The fuel pump has a main inlet hydraulically connected to the first fuel supply conduit, an outlet hydraulically connected to the second fuel supply conduit, and an intermediate inlet hydraulically connected to the fuel return conduit. The intermediate inlet is located between the main inlet and the outlet and in use has a pressure between the main inlet pressure and the outlet pressure. A method of supplying a liquid fuel to an aircraft engine is also described.
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公开(公告)号：US20200248648A1
公开(公告)日：2020-08-06
申请号：US16263113
申请日：2019-01-31
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Sebastien BERGERON , Etienne PLAMONDON , Andre JULIEN
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.
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公开(公告)号：US20240200510A1
公开(公告)日：2024-06-20
申请号：US18066302
申请日：2022-12-15
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Etienne PLAMONDON , Michel BOUSQUET , Kevin NGUYEN
CPC classification number: F02K3/10 , F01C1/22 , F01C11/008 , F02C3/14 , F02C6/12 , F05D2220/80
Abstract: An aircraft power plant, has: a combustion engine having an outlet outputting combustion gases; a turbine downstream of the combustion engine; a detonation combustion tube fluidly connecting the combustion engine to the turbine; a member having an open position in which the outlet of the combustion engine is fluidly connected to the turbine and a closed position in which the combustion engine is fluidly disconnected from the turbine; a fuel injector fluidly connected to the detonation combustion tube; an igniter operatively connected to the detonation combustion tube; and a controller operatively connected to the fuel injector and to the igniter, the controller configured to, in response to receiving of a command: inject fuel into the detonation combustion tube via the fuel injector, and once the member is in the closed position, power the igniter to ignite a mixture of the combustion gases and the fuel into the detonation combustion tube.
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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
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.
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公开(公告)号：US20200232431A1
公开(公告)日：2020-07-23
申请号：US16251512
申请日：2019-01-18
Applicant: PRATT & WHITNEY CANADA CORP.
Inventor： Etienne PLAMONDON , Sebastien BERGERON , Benjamin RENAUD , Jean-Gabriel GAUVREAU
Abstract: There is disclosed a method of operating an engine assembly including an internal combustion engine, a common-rail injector for injecting fuel in a combustion chamber of the internal combustion engine, and an oil circuit for lubricating components of the engine assembly. The method includes: injecting fuel in the combustion chamber via the common-rail injector; and exchanging heat between a backflow of fuel from the common-rail injector with oil of an oil circuit of the engine assembly.
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