公开(公告)号：US12123370B2

公开(公告)日：2024-10-22

申请号：US18118975

申请日：2023-03-08

Applicant: Pratt & Whitney Canada Corp.

Inventor： Jean-Philippe Simoneau ,  Johnny Vinski ,  David Gagnon-Martin ,  Sebastien Bolduc

IPC: F02F11/00 ,  F02B55/00 ,  F02B55/08 ,  F02B55/10 ,  F02F7/00 ,  F04C29/04 ,  F02B53/00

CPC classification number: F02F11/007 ,  F02B55/00 ,  F02B55/08 ,  F02B55/10 ,  F04C29/04 ,  F02B2053/005 ,  F02F7/007 ,  F04C2230/602 ,  F04C2240/80 ,  F04C2240/801 ,  F05C2201/90

Abstract: A rotary internal combustion engine includes a rotor housing having a peripheral wall circumscribing a rotor cavity and a rotor disposed within the rotor cavity. A side housing is secured to the rotor housing and a plate defines a seal running surface for the rotor. The plate is disposed between a portion of the side housing and the rotor housing and at least one shim is disposed between the plate and the side housing for spacing the plate apart from contact with the side housing.

公开(公告)号：US20240141826A1

公开(公告)日：2024-05-02

申请号：US17976498

申请日：2022-10-28

Applicant: Pratt & Whitney Canada Corp.

Inventor： Etienne Plamondon ,  Michel Bousquet ,  Ninad Joshi ,  Vincent Savaria

IPC: F02B55/02 ,  F01C1/22 ,  F01C21/08

CPC classification number: F02B55/02 ,  F01C1/22 ,  F01C21/08 ,  F02B2053/005

Abstract: A rotary engine rotor and a method for supplying rotary engine rotors are provided. The rotary engine rotor has a center axis, a rotor body, a plurality of peripheral surfaces, and a plurality of recess members. The rotor body has a central bore that extends along the center axis. The plurality of peripheral surfaces are disposed around an exterior perimeter of the rotor body. Each of the plurality of recess members are disposed in a respective one of the plurality of peripheral surfaces. Each recess member includes an interior cavity open to an exterior of the rotor.

公开(公告)号：US11841019B2

公开(公告)日：2023-12-12

申请号：US17196175

申请日：2021-03-09

Applicant: BorgWarner Inc.

Inventor： Frank Dahinten

IPC: F04C2/22 ,  B60H1/32 ,  F02B53/00

CPC classification number: F04C2/22 ,  B60H1/3223 ,  B60H2001/3297 ,  F02B2053/005 ,  F04C2240/30 ,  F04C2250/20

Abstract: A rotary piston compressor (1) for a system for temperature conditioning comprises a rotor (19) mounted in a housing (21), wherein the rotary piston compressor (1) is designed in such a way that the rotor (19) rotates in a first direction in a first operating state and rotates in a second direction opposite to the first direction in a second operating state, and wherein, in the first operating state, a first compressor connection (3) is designed to supply a heat transfer medium (17), and a second compressor connection (5) is designed to discharge the compressed heat transfer medium (17), and wherein, in the second operating state, the second compressor connection (5) is designed to supply the heat transfer medium (17), and the first compressor connection (3) is designed to discharge the compressed heat transfer medium (17).

公开(公告)号：US20230212967A1

公开(公告)日：2023-07-06

申请号：US17647192

申请日：2022-01-06

Applicant: HONEYWELL INTERNATIONAL INC.

Inventor： Morris G. Anderson ,  Swarna Sinha ,  Daniel Brown

IPC: B64D41/00 ,  F01C20/24 ,  F01C21/06 ,  F02B63/04 ,  F02C5/06 ,  F02C7/26 ,  F02C7/36 ,  F02D29/06 ,  F02D41/02 ,  F02D41/04 ,  F02D41/22

CPC classification number: B64D41/00 ,  F01C20/24 ,  F01C21/06 ,  F02B63/04 ,  F02C5/06 ,  F02C7/26 ,  F02C7/36 ,  F02D29/06 ,  F02D41/021 ,  F02D41/22 ,  F02D41/042 ,  B64D2041/002 ,  F02B2053/005

Abstract: A muffler includes a housing defining a first chamber, a second chamber and a third chamber. The muffler includes at least a pair of nested protrusions in communication with an inlet. The pair of nested protrusions is coupled to a respective surface of a pair of plates disposed in the housing such that one of the pair of nested protrusions is spaced apart from and opposite another of the pair of nested protrusions to define a tortuous path that terminates at an outlet defined along an outer circumference. The first chamber is downstream from the pair of plates. The muffler includes a first tube fluidly coupled to the first chamber to direct the exhaust gases from the first chamber to the second chamber. The muffler includes a second tube fluidly coupled to the second chamber to direct the exhaust gases from the second chamber to the third chamber.

公开(公告)号：US20180328235A1

公开(公告)日：2018-11-15

申请号：US16045631

申请日：2018-07-25

Applicant: EXENCY LTD

Inventor： Nitzan Eliyahu

IPC: F01K23/08 ,  F02G5/00 ,  F01K23/04 ,  F01K23/06 ,  F02B53/02

CPC classification number: F01K23/08 ,  F01K23/04 ,  F01K23/065 ,  F01K25/06 ,  F02B53/02 ,  F02B2053/005 ,  F02G5/00 ,  F03G7/06 ,  F16T1/00

Abstract: A dual-cycle heat engine employing a first cycling working fluid and a second cycling working fluid whose cycles overlap when fused into a combined working stream so as to preserve compression heat generated during compression of the first working fluid thereby yielding enhanced work extraction when complying with additional thermodynamic requirements.

公开(公告)号：US10072559B2

公开(公告)日：2018-09-11

申请号：US15273788

申请日：2016-09-23

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Edwin Schulz ,  Michael Lanktree

IPC: F02B53/02 ,  F02B19/10 ,  F02B53/10 ,  F02D41/04 ,  F02D41/30 ,  F02D41/40

CPC classification number: F02B19/1071 ,  F01C1/22 ,  F02B19/1014 ,  F02B19/108 ,  F02B19/12 ,  F02B53/00 ,  F02B53/02 ,  F02B53/10 ,  F02B53/12 ,  F02B2053/005 ,  F02B2275/32 ,  F02D41/045 ,  F02D41/3094 ,  F02D41/403 ,  Y02T10/125 ,  Y02T10/17 ,  Y02T10/44

Abstract: A method of operating an internal combustion engine having pilot subchambers communicating with main combustion chambers, the internal combustion engine configured in use to deliver a main fuel injection of a maximum quantity of fuel to the main combustion chambers when the internal combustion engine is operated at maximum load. The method includes delivering a pilot fuel injection of at most 10% of the maximum quantity to the pilot subchambers, igniting the pilot fuel injection within the pilot subchambers, directing the ignited fuel from the pilot subchambers to the main combustion chambers, and delivering a main fuel injection of a main quantity of fuel to at least one of the main combustion chambers receiving the ignited fuel, with the main quantity being at most 10% of the maximum quantity.

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：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：US10001123B2

公开(公告)日：2018-06-19

申请号：US14855059

申请日：2015-09-15

Applicant: Sten Kreuger

Inventor： Sten Kreuger

IPC: F03C2/00 ,  F03C4/00 ,  F04C2/00 ,  F04C29/00 ,  F01C1/10 ,  F02B53/00 ,  F04C23/00 ,  F04C18/22 ,  F04C29/12 ,  F04C27/00

CPC classification number: F04C29/0057 ,  F01C1/104 ,  F02B53/00 ,  F02B2053/005 ,  F04C18/22 ,  F04C23/001 ,  F04C27/001 ,  F04C29/124

Abstract: Pressure changing devices and methods of making and using the same are disclosed. One pressure changing device includes an elliptic cylinder and a piston that has an external surface with a trochoid cross-section. Another pressure changing device includes a piston and a rotating cylinder that has an internal surface with a trochoid cross-section. Another pressure changing device includes two fixed axes, one for rotation of one component and another for orbiting or oscillation of the other component. The devices and methods include stacked pressure changing devices with one or more common shafts. The pressure changing device may be easier and less expensive to manufacture and repair than prior pressure changing devices of the same or similar functionality, and can provide efficient gap sealing in a high pressure expansion part of a compression or expansion cycle.

公开(公告)号：US09932892B2

公开(公告)日：2018-04-03

申请号：US14806880

申请日：2015-07-23

Applicant: Pratt & Whitney Canada Corp.

Inventor： Jean Thomassin ,  Sebastien Bolduc ,  Bruno Villeneuve ,  Stephane Berube ,  Mike Fontaine ,  David Gagnon-Martin ,  Jade Bilodeau ,  Andre Julien ,  Pierre-Yves Legare ,  Jason Nichols

IPC: F02B53/14 ,  F02C3/04 ,  F02C6/12 ,  F02C7/047 ,  F02C7/052 ,  F02C7/055 ,  F02C7/14 ,  F02C7/36 ,  F01C11/00 ,  F02B29/04 ,  F02B33/40 ,  F02B39/04 ,  F02B41/10 ,  F02C3/107 ,  F02C6/00 ,  F02C6/20 ,  F01C21/18 ,  F02M31/04 ,  F02M31/10 ,  F01C1/22 ,  F02B53/00

CPC classification number: F02B53/14 ,  F01C1/22 ,  F01C11/008 ,  F01C21/18 ,  F02B29/0418 ,  F02B33/40 ,  F02B39/04 ,  F02B41/10 ,  F02B2053/005 ,  F02C3/04 ,  F02C3/107 ,  F02C6/00 ,  F02C6/12 ,  F02C6/20 ,  F02C7/047 ,  F02C7/052 ,  F02C7/055 ,  F02C7/14 ,  F02C7/36 ,  F02M31/042 ,  F02M31/10 ,  F02M31/107 ,  F05D2250/312 ,  F05D2260/40311 ,  F05D2260/98 ,  Y02T10/126 ,  Y02T10/146 ,  Y02T10/163 ,  Y02T10/17 ,  Y02T50/675

Abstract: A compound engine assembly having an engine core including at least one internal combustion engine in driving engagement with an engine shaft, a compressor having an outlet in fluid communication with an inlet of the engine core and including at least one rotor rotatable about an axis coaxial with the engine shaft, the engine shaft in driving engagement with the compressor rotor, and a turbine section having an inlet in fluid communication with an outlet of the engine core and including at least one rotor engaged on a rotatable turbine shaft, the turbine shaft configured to compound power with the engine shaft. The turbine and engine shafts are parallel to and radially offset from one another, and the turbine shaft and the axis of the compressor rotor are parallel to and radially offset from one another. A method of driving a rotatable load of an aircraft is also discussed.