Patents by Inventor David Gagnon-Martin
David Gagnon-Martin has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11867101Abstract: An assembly includes a rotor housing, a first rotor, a lubrication system, a first vibration sensor, and an engine control system. The rotor housing forms a first rotor cavity. The first rotor is configured for rotation within the first rotor cavity. The first rotor includes the plurality of apex seals. The lubrication system is configured to supply a lubrication flow for lubrication of the plurality of apex seals. The first vibration sensor is on the rotor housing. The first vibration sensor is configured to generate a vibration measurement signal. The engine control system includes a processor in communication with a non-transitory memory storing instructions, which instructions when executed by the processor, cause the processor to: identify that the vibration measurement signal exceeds a first vibration threshold, and increase a flow rate of the lubrication flow based on an identification of the vibration measurement signal exceeding the first vibration threshold.Type: GrantFiled: September 23, 2022Date of Patent: January 9, 2024Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jean-Philippe Simoneau, Vincent Savaria, David Gagnon-Martin
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Patent number: 11761376Abstract: A side housing for a rotary internal combustion engine, has: a side wall; a side plate having a rotor-engaging side facing away from the side wall and a back side opposite the rotor-engaging side and facing the side wall, the side plate defining first threads located on the back side, the first threads extending circumferentially around a central axis of the side plate; and a nut rotatable relative to the side wall about the central axis of the side plate and axially locked to the side wall relative to the central axis, the side plate secured to the side wall via a threaded engagement between the first threads of the side plate and second threads defined by the nut.Type: GrantFiled: November 11, 2022Date of Patent: September 19, 2023Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Johnny Vinski, Vincent Savaria, David Gagnon-Martin
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Patent number: 11613995Abstract: A rotary internal combustion engine has: a rotor; a housing circumscribing a rotor cavity, the rotor received within the rotor cavity, the housing having a peripheral wall and a side housing assembly secured to the peripheral wall, the side housing assembly having plates located at spaced apart ends of the peripheral wall, the plates defining seal running surfaces in sealing engagement with opposed end faces of the rotor, the plates made of silicon carbide.Type: GrantFiled: October 28, 2019Date of Patent: March 28, 2023Assignee: PRATT & WHITNEY CANADA CORP.Inventors: David Gagnon-Martin, Bruno Villeneuve, Sebastien Bolduc, Jean-Philippe Simoneau, Jean-Gabriel Gauvreau, Johnny Vinski
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Patent number: 11333068Abstract: A housing for a rotary engine has: a peripheral wall defining two end faces and an inner face transverse to the two end faces; two side walls sealingly engaged to the two end faces of the peripheral wall, a core of a side wall of the two side walls having a core face, the core face having a cavity section facing the rotor cavity and an abutment section annularly extending around the cavity section, the abutment section facing an end face of the two end faces, the abutment section having a flared portion flaring away from the end face; and a coating on the core face, the coating made of a material harder than a material of the core of the side wall, the coating covering the cavity section and ending at a coating edge located on the flared portion, the coating edge free of contact with the end face.Type: GrantFiled: March 23, 2021Date of Patent: May 17, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Vincent Savaria, David Gagnon-Martin, Johnny Vinski, Sébastien Bolduc
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Patent number: 11214377Abstract: A mounting arrangement for mounting a rotary engine to an aircraft structure, wherein the engine has a three orthogonal axes comprising: a roll axis; a pitch axis; and a yaw axis. The mounting arrangement comprises: one-degree-of-freedom links with reaction axes passing through the roll axis. A separate roll constraint has a moment reaction about the roll axis to decouple the torque roll mode from the other one-degree-of-freedom links.Type: GrantFiled: May 17, 2019Date of Patent: January 4, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Nathan Tomes, David Gagnon-Martin
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Patent number: 11131194Abstract: A rotor assembly for a rotary internal combustion engine is provided. The rotor assembly includes a rotor having a radial groove defined radially in a peripheral surface of the rotor. The groove has a depth and an intermediate shoulder at an intermediate depth. The groove has a first width therealong that is narrower than an intermediate width at the shoulder. An apex seal is received in the groove and protrudes from the peripheral face of the rotor. The apex seal is configured to move radially between a first position and a second position outward of the first position. A biasing member biases the apex seal toward the second position. A platform is disposed in the groove between the apex seal and the biasing member and has a width greater than the first width.Type: GrantFiled: April 12, 2019Date of Patent: September 28, 2021Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Johnny Vinski, David Gagnon-Martin, Jean-Gabriel Gauvreau, Roger Huppe
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Patent number: 10883414Abstract: An engine assembly including an engine core including at least one internal combustion engine each including a rotor sealingly and rotationally received within a respective internal cavity to provide rotating chambers of variable volume in the respective internal cavity, a compressor having an outlet in fluid communication with an inlet of the engine core, a first intake conduit in fluid communication with an inlet of the compressor and with a first source of air, a second intake conduit in fluid communication with the inlet of the compressor and with a second source of air warmer than the first source of air, and a selector valve configurable to selectively open and close at least the fluid communication between the inlet of the compressor and the first intake conduit. A method of supplying air to a compressor is also discussed.Type: GrantFiled: December 9, 2019Date of Patent: January 5, 2021Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jean Thomassin, Sebastien Bolduc, Bruno Villeneuve, Stephane Berube, Mike Fontaine, David Gagnon-Martin, Andre Julien, Mark Cunningham, Serge Lafortune, Pierre-Yves Legare
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Publication number: 20200361616Abstract: A mounting arrangement for mounting a rotary engine to an aircraft structure, wherein the engine has a three orthogonal axes comprising: a roll axis; a pitch axis; and a yaw axis. The mounting arrangement comprises: one-degree-of-freedom links with reaction axes passing through the roll axis. A separate roll constraint has a moment reaction about the roll axis to decouple the torque roll mode from the other one-degree-of-freedom links.Type: ApplicationFiled: May 17, 2019Publication date: November 19, 2020Inventors: Nathan TOMES, David GAGNON-MARTIN
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Patent number: 10823097Abstract: Systems and methods for detecting at least one non-functional combustion chamber of an engine comprising a plurality of combustion chambers are described herein. In response to detecting a partial output power loss of the engine, one of the plurality of combustion chambers is assessed by monitoring an engine parameter indicative of an output power of the engine, determining whether a change in the engine parameter has occurred, when the change has occurred, determining that the combustion chamber is functional, and when no change has occurred, determining that the combustion chamber is non-functional and discontinuing fuel injection to the non-functional combustion chamber.Type: GrantFiled: May 15, 2018Date of Patent: November 3, 2020Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Michael Lanktree, David Gagnon-Martin, Bruno Villeneuve
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Publication number: 20200325777Abstract: A rotor assembly for a rotary internal combustion engine is provided. The rotor assembly includes a rotor having a radial groove defined radially in a peripheral surface of the rotor. The groove has a depth and an intermediate shoulder at an intermediate depth. The groove has a first width therealong that is narrower than an intermediate width at the shoulder. An apex seal is received in the groove and protrudes from the peripheral face of the rotor. The apex seal is configured to move radially between a first position and a second position outward of the first position. A biasing member biases the apex seal toward the second position. A platform is disposed in the groove between the apex seal and the biasing member and has a width greater than the first width.Type: ApplicationFiled: April 12, 2019Publication date: October 15, 2020Inventors: Johnny VINSKI, David GAGNON-MARTIN, Jean-Gabriel GAUVREAU, Roger HUPPE
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Publication number: 20200200009Abstract: A rotary internal combustion engine has: a rotor; a housing circumscribing a rotor cavity, the rotor received within the rotor cavity, the housing having a peripheral wall and a side housing assembly secured to the peripheral wall, the side housing assembly having plates located at spaced apart ends of the peripheral wall, the plates defining seal running surfaces in sealing engagement with opposed end faces of the rotor, the plates made of silicon carbide.Type: ApplicationFiled: October 28, 2019Publication date: June 25, 2020Inventors: David GAGNON-MARTIN, Bruno VILLENEUVE, Sebastien BOLDUC, Jean-Philippe SIMONEAU, Jean-Gabriel GAUVREAU, Johnny VINSKI
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Publication number: 20200116076Abstract: An engine assembly including an engine core including at least one internal combustion engine each including a rotor sealingly and rotationally received within a respective internal cavity to provide rotating chambers of variable volume in the respective internal cavity, a compressor having an outlet in fluid communication with an inlet of the engine core, a first intake conduit in fluid communication with an inlet of the compressor and with a first source of air, a second intake conduit in fluid communication with the inlet of the compressor and with a second source of air warmer than the first source of air, and a selector valve configurable to selectively open and close at least the fluid communication between the inlet of the compressor and the first intake conduit. A method of supplying air to a compressor is also discussed.Type: ApplicationFiled: December 9, 2019Publication date: April 16, 2020Inventors: Jean THOMASSIN, Sebastien BOLDUC, Bruno VILLENEUVE, Stephane BERUBE, Mike FONTAINE, David GAGNON-MARTIN, Andre JULIEN, Mark CUNNINGHAM, Serge LAFORTUNE, Pierre-Yves LEGARE
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Publication number: 20200102884Abstract: An engine assembly has an engine core comprising at least two stacks of rotary internal combustion engines drivingly connected to a common load. The engine further comprises a compressor section having an outlet in fluid communication with an inlet of the engine core, and a turbine section having an inlet in fluid communication with an outlet of the engine core.Type: ApplicationFiled: May 23, 2019Publication date: April 2, 2020Inventors: Mike FONTAINE, Sebastien BOLDUC, Bruno VILLENEUVE, Andre JULIEN, Jean THOMASSIN, David GAGNON-MARTIN, Serge DUSSAULT
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Patent number: 10605084Abstract: A rotary engine where the rotor cavity has a peripheral inner surface having a peritrochoid configuration defined by a first eccentricity and the rotor has a peripheral outer surface having a peritrochoid inner envelope configuration defined by a second eccentricity larger than the first eccentricity. Also, a rotary engine where the rotor cavity has a peripheral inner surface having a peritrochoid configuration defined by an eccentricity, and a rotor with a peripheral outer surface between adjacent ones of the apex portions being inwardly offset from a peritrochoid inner envelope configuration defined by the eccentricity. The engine may have an expansion ratio with a value of at most 8. The rotary engine may be part of a compound engine system.Type: GrantFiled: September 7, 2018Date of Patent: March 31, 2020Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jean-Gabriel Gauvreau, David Gagnon-Martin, Andre Julien
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Patent number: 10533489Abstract: 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.Type: GrantFiled: September 19, 2017Date of Patent: January 14, 2020Assignee: Pratt & Whitney Canada Corp.Inventors: Jean Thomassin, Sebastien Bolduc, Bruno Villeneuve, Stephane Berube, Mike Fontaine, David Gagnon-Martin, Andre Julien, Mark Cunningham, Serge Lafortune, Pierre-Yves Legare
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Patent number: 10533487Abstract: An engine assembly including an engine core including at least one internal combustion engine each including a rotor sealingly and rotationally received within a respective internal cavity to provide rotating chambers of variable volume in the respective internal cavity, a compressor having an outlet in fluid communication with an inlet of the engine core, a first intake conduit in fluid communication with an inlet of the compressor and with a first source of air, a second intake conduit in fluid communication with the inlet of the compressor and with a second source of air warmer than the first source of air, and a selector valve configurable to selectively open and close at least the fluid communication between the inlet of the compressor and the first intake conduit. A method of supplying air to a compressor is also discussed.Type: GrantFiled: December 21, 2017Date of Patent: January 14, 2020Assignee: Pratt & Whitney Canada Corp.Inventors: Jean Thomassin, Sebastien Bolduc, Bruno Villeneuve, Stephane Berube, Mike Fontaine, David Gagnon-Martin, Andre Julien, Mark Cunningham, Serge LaFortune, Pierre-Yves Legare
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Publication number: 20190353115Abstract: Systems and methods for detecting at least one non-functional combustion chamber of an engine comprising a plurality of combustion chambers are described herein. In response to detecting a partial output power loss of the engine, one of the plurality of combustion chambers is assessed by monitoring an engine parameter indicative of an output power of the engine, determining whether a change in the engine parameter has occurred, when the change has occurred, determining that the combustion chamber is functional, and when no change has occurred, determining that the combustion chamber is non-functional and discontinuing fuel injection to the non-functional combustion chamber.Type: ApplicationFiled: May 15, 2018Publication date: November 21, 2019Inventors: Michael LANKTREE, David GAGNON-MARTIN, Bruno VILLENEUVE
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Patent number: 10344870Abstract: In one aspect, described is a rotor for a Wankel engine comprising two circumferentially spaced apart apex seals at each of the apex portions with each apex seal protruding axially from both end faces, and each apex seal having a first biasing member biasing the apex seal radially outwardly away from the peripheral face of the body, and a second biasing member biasing the apex seal axially outwardly away from a respective one of the end faces, the two apex seals of a same one of the apex portions being biased by the respective second biasing member in opposite axial directions from one another.Type: GrantFiled: October 14, 2011Date of Patent: July 9, 2019Assignee: Pratt & Whitney Canada Corp.Inventors: Eugene Gekht, Jean Thomassin, Sebastien Bolduc, David Gagnon-Martin
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Patent number: 10247092Abstract: A rotary internal combustion engine having an insert opening defined in a hot area of one of the walls of the stator body and in communication with its internal cavity. A cooling jacket is received in and lines the insert opening. An insert is sealingly received in the cooling jacket and made of a material having a greater heat resistance than that of the wall. The cooling jacket extends between the insert and the wall along most of the length of the insert to prevent direct contact between the insert and the wall. A cooling gallery surrounds the cooling jacket and the insert, and is defined at least in part by the cooling jacket such that a coolant circulated therein contacts the cooling jacket. The cooling jacket is located between the cooling gallery and the insert.Type: GrantFiled: August 3, 2015Date of Patent: April 2, 2019Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Eugene Gekht, Bruno Villeneuve, Mike Fontaine, David Gagnon-Martin
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Publication number: 20190003307Abstract: A rotary engine where the rotor cavity has a peripheral inner surface having a peritrochoid configuration defined by a first eccentricity and the rotor has a peripheral outer surface having a peritrochoid inner envelope configuration defined by a second eccentricity larger than the first eccentricity. Also, a rotary engine where the rotor cavity has a peripheral inner surface having a peritrochoid configuration defined by an eccentricity, and a rotor with a peripheral outer surface between adjacent ones of the apex portions being inwardly offset from a peritrochoid inner envelope configuration defined by the eccentricity. The engine may have an expansion ratio with a value of at most 8. The rotary engine may be part of a compound engine system.Type: ApplicationFiled: September 7, 2018Publication date: January 3, 2019Inventors: Jean-Gabriel GAUVREAU, David GAGNON-MARTIN, Andre JULIEN