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1. 发明授权

US10883414B2 Engine intake assembly with selector valve 有权
公开(公告)号：US10883414B2
公开(公告)日：2021-01-05
申请号：US16707362
申请日：2019-12-09
申请人： PRATT & WHITNEY CANADA CORP.
发明人： Jean Thomassin , Sebastien Bolduc , Bruno Villeneuve , Stephane Berube , Mike Fontaine , David Gagnon-Martin , Andre Julien , Mark Cunningham , Serge Lafortune , Pierre-Yves Legare
IPC分类号： F02B29/04 , F02C6/12 , F02C7/047 , F02C7/052 , F02C7/055 , F02C7/14 , F02C7/36 , F01C11/00 , F02B33/40 , F02B39/04 , F01C21/18 , F02M31/04 , F02M31/10 , F02B37/12 , F02B53/08 , F02B53/14 , F01C1/22
摘要： 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.

2. 发明授权

US10533489B2 Compound engine assembly with common inlet 有权
公开(公告)号：US10533489B2
公开(公告)日：2020-01-14
申请号：US15708442
申请日：2017-09-19
申请人： PRATT & WHITNEY CANADA CORP.
发明人： Jean Thomassin , Sebastien Bolduc , Bruno Villeneuve , Stephane Berube , Mike Fontaine , David Gagnon-Martin , Andre Julien , Mark Cunningham , Serge Lafortune , Pierre-Yves Legare
IPC分类号： F02B29/04 , F01C1/22 , F01C11/00 , F01D13/00 , F02K5/00 , F02C6/12 , F02B33/34 , F02B41/10 , F02B53/00 , F02B61/04
摘要： 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.

3. 发明授权

US09896934B2 Rotary engine with rotor land 有权
公开(公告)号：US09896934B2
公开(公告)日：2018-02-20
申请号：US14108522
申请日：2013-12-17
申请人： Pratt & Whitney Canada Corp.
发明人： Bruno Villeneuve , David Gagnon-Martin , Gilbert Ouellet
IPC分类号： F01C19/08 , F01C21/08 , F01C1/22 , F02B55/02 , F02B55/14
CPC分类号： F01C19/085 , F01C1/22 , F01C21/08 , F02B55/02 , F02B55/14 , F04C2240/801 , F04C2270/16 , F05C2201/0412 , F05C2251/10 , Y02T10/17 , Y10T29/49234
摘要： A rotary internal combustion engine with a rotor body made at least in major part of a first material, including at least one land protruding axially from each of its end faces and defining a contact surface extending at a fixed position with respect to the end faces. The contact surface frictionally engages a portion of the inner surface of the internal cavity of the engine, and at least the outer surface of the land includes a second material. The second material has a greater wear resistance than that of the first material with respect to frictional engagement with the portion of the inner surface of the internal cavity contacting the land. A method of axially positioning a rotor of a rotary engine within an internal cavity of an outer body of the engine are also discussed.

4. 发明授权

US12110796B1 Seal assembly for a rotary engine housing 有权
公开(公告)号：US12110796B1
公开(公告)日：2024-10-08
申请号：US18221645
申请日：2023-07-13
申请人： Pratt & Whitney Canada Corp.
发明人： Johnny Vinski , Jean-Philippe Simoneau , David Gagnon-Martin , Vincent Savaria , Bruno Villeneuve , Stephane Berube , Frederic Roy , Sebastien Bolduc
IPC分类号： F01C19/00 , F01C1/34 , F01C1/344 , F01C21/06
CPC分类号： F01C19/005 , F01C1/3442 , F01C21/06 , F04C2240/30
摘要： An engine housing includes a rotor housing and a side housing assembly. The rotor housing includes a rotor housing body. The rotor housing body extends about an axis to form a rotor cavity of the engine housing. The rotor housing body extends between and to a first axial end and a second axial end. The side housing assembly includes a side housing body, a side plate, and a seal assembly. The side housing body is disposed at the first axial end. The side plate is disposed axially between the rotor housing body and the side housing body. The side plate includes an inner side, an outer side, and a perimeter edge. The seal assembly includes a support ring and a sealing ring. The support ring is disposed at the perimeter edge and the first axial end. The support ring circumscribes the side plate. The sealing ring extends between and to a first axial sealing ring end and a second axial sealing ring end. The first axial sealing ring end is disposed at the support ring and the outer side.

5. 发明授权

US11131194B2 Apex seal arrangement for rotary internal combustion engine 有权
公开(公告)号：US11131194B2
公开(公告)日：2021-09-28
申请号：US16382776
申请日：2019-04-12
申请人： PRATT & WHITNEY CANADA CORP.
发明人： Johnny Vinski , David Gagnon-Martin , Jean-Gabriel Gauvreau , Roger Huppe
IPC分类号： F01C19/10 , F01C19/02 , F02B53/00
摘要： 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.

6. 发明授权

US11613995B2 Rotary engine with housing having silicon carbide plate 有权
公开(公告)号：US11613995B2
公开(公告)日：2023-03-28
申请号：US16665428
申请日：2019-10-28
申请人： PRATT & WHITNEY CANADA CORP.
发明人： David Gagnon-Martin , Bruno Villeneuve , Sebastien Bolduc , Jean-Philippe Simoneau , Jean-Gabriel Gauvreau , Johnny Vinski
IPC分类号： F01C1/22 , F01C19/10 , F01C21/10 , F01C21/06 , F04C27/00 , F04C29/00 , F02B55/02 , F02B53/00
摘要： 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.

7. 发明授权

US10247092B2 Rotary internal combustion engine with cooled insert 有权
公开(公告)号：US10247092B2
公开(公告)日：2019-04-02
申请号：US14816245
申请日：2015-08-03
申请人： Pratt & Whitney Canada Corp.
发明人： Eugene Gekht , Bruno Villeneuve , Mike Fontaine , David Gagnon-Martin
IPC分类号： F02B55/10 , F02B53/00 , F02B53/12 , F02B53/10 , F01C1/22 , F01C21/06
摘要： 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.

8. 发明授权

US09879591B2 Engine intake assembly with selector valve 有权
公开(公告)号：US09879591B2
公开(公告)日：2018-01-30
申请号：US14806883
申请日：2015-07-23
申请人： Pratt & Whitney Canada Corp.
发明人： Jean Thomassin , Sebastien Bolduc , Bruno Villeneuve , Stephane Berube , Mike Fontaine , David Gagnon-Martin , Andre Julien , Mark Cunningham , Serge Lafortune , Pierre-Yves Legare
IPC分类号： F02B29/04 , F02C6/12 , F02C7/047 , F02C7/052 , F02C7/055 , F02C7/14 , F02C7/36 , F02B37/12 , F02B53/08 , F02B53/14 , F01C11/00 , F02B39/04 , F01C21/18 , F02M31/04 , F02M31/10 , F01C1/22
CPC分类号： F02B29/0406 , F01C1/22 , F01C11/008 , F01C21/18 , F02B29/0412 , F02B33/40 , F02B37/12 , F02B39/04 , F02B53/08 , F02B53/14 , F02C6/12 , F02C7/047 , F02C7/052 , F02C7/055 , F02C7/14 , F02C7/36 , F02M31/042 , F02M31/10 , F02M31/107 , F05D2250/312 , F05D2260/40311 , F05D2260/98 , Y02T10/126 , Y02T10/17 , Y02T50/675
摘要： An intake assembly for a compressor providing compressed air to an internal combustion engine core, including an air conduit having at least one heat exchanger extending thereacross, an intake plenum for the compressor, a first intake conduit connected to the air conduit upstream of the heat exchanger(s), a second intake conduit connected to the air conduit downstream of the heat exchanger(s), and a selector valve configurable between a first configuration to allow a fluid communication between the intake plenum and the air conduit through the first intake conduit and a second configuration to prevent the fluid communication through the first intake conduit. Fluid communication between the intake plenum and the air conduit through the second intake conduit is allowed at least when the selector valve is in the second configuration. An engine assembly and method of supplying air to a compressor are also discussed.

9. 发明授权

US09593580B2 Wankel engine rotor 有权
标题翻译：汪克尔发动机转子
公开(公告)号：US09593580B2
公开(公告)日：2017-03-14
申请号：US13684390
申请日：2012-11-23
申请人： Pratt & Whitney Canada Corp.
发明人： Jean-Gabriel Gauvreau , David Gagnon-Martin
IPC分类号： F01C1/00 , F01C1/22 , F01C21/08 , F02B55/02 , F02B53/00
CPC分类号： F01C1/00 , F01C1/22 , F01C21/08 , F02B55/02 , F02B2053/005 , Y02T10/17
摘要： A rotor for a Wankel engine including a plurality of ribs extending from a bearing support to each one of the flanks, the plurality of ribs including, for each flank, first and second ribs connected to the flank between the recess and a respective one of the apex portions. The first and second ribs are curved along at least a portion thereof, and/or the first and second ribs are closest to the respective apex portion and connected to the flank adjacent a junction between a portion of the flank defining the recess and a respective portion of the flank connected thereto. A method of reducing pinching of apex seals in a rotor of a Wankel engine is also discussed.
摘要翻译：一种用于汪克尔发动机的转子，其包括从轴承支撑件延伸到每个侧面的多个肋，所述多个肋包括用于每个侧面的第一和第二肋，所述第一和第二肋连接到所述凹部与所述凹部中的相应一个之间的侧面顶端部分。第一和第二肋条沿着其至少一部分弯曲，和/或第一和第二肋条最靠近相应的顶点部分并且连接到邻近位于限定凹部的侧面的一部分与相应部分的侧面。还讨论了减少汪克尔发动机转子中顶点密封夹紧的方法。

10. 发明授权

US09334795B2 Rotary internal combustion engine with static oil seal 有权
标题翻译：带静态油封的旋转内燃机
公开(公告)号：US09334795B2
公开(公告)日：2016-05-10
申请号：US13960045
申请日：2013-08-06
申请人： Pratt & Whitney Canada Corp.
发明人： Jean Thomassin , Jean-Gabriel Gauvreau , David Gagnon-Martin , Bruno Villeneuve
IPC分类号： F04C2/00 , F02B55/08 , F02B53/00
CPC分类号： F02B55/08 , F02B2053/005
摘要： A stator for a rotary internal combustion engine, with a body having an internal cavity. Each end wall has a scavenging cavity defined therein in fluid communication with the internal cavity through a respective scavenging opening extending through the inner surface thereof, and at least one annular oil seal groove defined in the inner surface thereof concentric with the central bore and located radially outwardly of the scavenging opening. At least one annular oil seal is received in each groove and protrudes from the end wall into the internal cavity for sealing engagement with a surface of a rotor of the engine, each seal being biased axially away from the end wall. A rotary internal combustion engine and a method of limiting radially outwardly directed oil leaks in a rotary engine are also disclosed.
摘要翻译：一种用于旋转内燃机的定子，其具有内部空腔。每个端壁具有限定在其中的扫气腔，其通过延伸穿过其内表面的相应扫气孔与内腔流体连通，以及限定在其内表面中的与中心孔同心并位于径向上的至少一个环形油封槽向外清扫开口。至少一个环形油封被容纳在每个凹槽中并且从端壁突出到内腔中以与发动机的转子的表面密封接合，每个密封件被轴向偏离远离端壁。还公开了旋转式内燃机和限制旋转式发动机中径向向外指向的油泄漏的方法。

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