公开(公告)号：US20200011234A1

公开(公告)日：2020-01-09

申请号：US16574650

申请日：2019-09-18

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Michael GAUL ,  Andre JULIEN ,  Bruno VILLENEUVE

IPC: F02B53/12 ,  F01C1/22 ,  F02B19/10 ,  F02B53/10 ,  F02B55/08 ,  F02B19/12 ,  F02B53/02 ,  F02M53/02 ,  F02P19/02

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：US20190353115A1

公开(公告)日：2019-11-21

申请号：US15980724

申请日：2018-05-15

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Michael LANKTREE ,  David GAGNON-MARTIN ,  Bruno VILLENEUVE

IPC: F02D41/22 ,  F02B53/10 ,  F02B53/02 ,  F02D41/40 ,  F02D41/38

Abstract: 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.

公开(公告)号：US10337328B2

公开(公告)日：2019-07-02

申请号：US15271134

申请日：2016-09-20

Applicant: Exponential Technologies, Inc.

Inventor： Alejandro Juan ,  Soheil Farshchian

IPC: F03C4/00 ,  F04C2/00 ,  F04C18/00 ,  F01C3/08 ,  F04C3/08 ,  F01C1/20 ,  F04C18/48 ,  F01C21/08 ,  F02C3/16 ,  F02C5/00 ,  F01C1/10 ,  F01C21/10 ,  F02B53/04 ,  F02B53/10 ,  F02B53/12 ,  F01C1/107

Abstract: A positive displacement rotary motion device including in one example a pulse detonation device. Also; an indexing system for a rotor assembly where in one example the indexing system regulates the rotational location of drive rotors. In one example the rotors are configured to rotate about a shaft.

公开(公告)号：US10280830B2

公开(公告)日：2019-05-07

申请号：US13789989

申请日：2013-03-08

Applicant: Pratt & Whitney Canada Corp.

Inventor： Jean Thomassin ,  Edwin Schulz

IPC: F02B53/10 ,  F02B19/12 ,  F02B19/10 ,  F02D35/02 ,  F02D41/30 ,  F02D41/40 ,  F02D41/04 ,  F02D41/14

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.

公开(公告)号：US10208598B2

公开(公告)日：2019-02-19

申请号：US15213785

申请日：2016-07-19

Applicant: Scott Hudson

Inventor： Scott Hudson

IPC: F02B53/00 ,  F02B53/04 ,  F01C1/00 ,  F04C18/00 ,  F04C2/00 ,  F01C21/08 ,  F01C1/32 ,  F01C1/40 ,  F01C21/10 ,  F02B55/00 ,  F02B53/10 ,  F02B53/12 ,  F02B55/14

Abstract: A rotary internal combustion engine includes outer and inner housings defining an enclosure therebetween, and first and second side housings disposed on opposite sides of the outer housing. The inner housing is rotatable relative to the outer housing and at least two barriers divide the enclosure into a combustion chamber and an exhaust chamber. At least one barrier is rotatable relative to at least one other barrier and at least one barrier comprises a retractable barrier mounted along a pivot axis and is pivotable between an extended position and a retracted position. An intake port, exhaust port, and ignition source are also provided. The rotary internal combustion engine further includes a cylindrical stationary shaft disposed inside the inner housing and oriented substantially coaxially with the inner housing. The stationary shaft has an intake opening configured to be intermittently fluidly connected with the intake port.

公开(公告)号：US10196971B2

公开(公告)日：2019-02-05

申请号：US15346864

申请日：2016-11-09

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean Thomassin

IPC: F02B53/00 ,  F02B53/04 ,  F02B37/00 ,  F02B33/32 ,  F02B53/14 ,  F01C1/22 ,  F01C11/00 ,  F02C6/12 ,  F02C6/20 ,  F02B53/10

Abstract: A compound cycle engine having a rotary internal combustion engine, a first turbine, and a second turbine is discussed. The exhaust port of the internal combustion engine is in fluid communication with the flowpath of the first turbine upstream of its rotor. The rotors of the first turbine and of each rotary unit drive a common load. The inlet of the second turbine is in fluid communication with the flowpath of the first turbine downstream of its rotor. The first turbine is configured as a velocity turbine and the first turbine has a pressure ratio smaller than that of the second turbine. A method of compounding a rotary engine is also discussed.

公开(公告)号：US20180347450A1

公开(公告)日：2018-12-06

申请号：US16100611

申请日：2018-08-10

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Edwin SCHULZ ,  Michael LANKTREE

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

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：US10125675B2

公开(公告)日：2018-11-13

申请号：US15385260

申请日：2016-12-20

Applicant: LiquidPiston, Inc.

Inventor： Alexander C. Shkolnik ,  Nikolay Shkolnik ,  Alex Lyubomirskiy

IPC: F02B53/10 ,  F01C1/10 ,  F01C21/10 ,  F02M61/14 ,  F02M19/06 ,  F16F15/28 ,  F02B55/06

Abstract: An internal combustion rotary engine includes an air passage configured to allow cool air to flow through the rotor as the rotor moves relative to the housing within the engine. Some embodiments include a removable fuel cartridge.

公开(公告)号：US10060261B2

公开(公告)日：2018-08-28

申请号：US15129984

申请日：2015-04-19

Applicant: Takayuki Arima ,  Takero Arima

Inventor： Takayuki Arima ,  Takero Arima

IPC: F01C1/12 ,  F01C21/08 ,  F02M26/41 ,  F02B53/10 ,  F02B53/12

CPC classification number: F01C1/123 ,  F01C21/08 ,  F02B53/10 ,  F02B53/12 ,  F02M26/41

Abstract: An engine system is provided, including a housing, multiple shafts in alignment and in parallel with each other, vertically penetrating through the housing, multiple wing sections integratively attached around the multiple shafts, respectively, and configured to engage with each adjacent one to drive axial rotation, and multiple ducts attached to the housing and communicating with inside of the housing, each duct being for use for passing an air-fuel mixture or outputting exhaust gases. The air-fuel mixture is collected in at least two open sections associated with the first wing section, and the collected air-fuel mixture is compressed and ignited for combustion when each of the at least two open sections has a minimum volume. Chemical energy generated by the combustion is used to drive the axial rotation of each wing section, thereby individually rotating the multiple shafts to transmit power.

公开(公告)号：US10041402B2

公开(公告)日：2018-08-07

申请号：US15489994

申请日：2017-04-18

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Edwin Schulz ,  Michael Lanktree ,  Jean Thomassin

IPC: F02B53/10 ,  F02B19/10 ,  F02B19/12 ,  F02B53/12 ,  F01C1/22 ,  F01C1/344 ,  F01C21/06 ,  F01C21/10 ,  F01C21/18 ,  F02B53/04 ,  F02B55/16 ,  F02B53/00 ,  F01C20/28

CPC classification number: F02B53/10 ,  F01C1/22 ,  F01C1/344 ,  F01C20/28 ,  F01C21/06 ,  F01C21/106 ,  F01C21/18 ,  F02B19/1019 ,  F02B19/12 ,  F02B53/04 ,  F02B53/12 ,  F02B55/16 ,  F02B2053/005 ,  Y02T10/125 ,  Y02T10/17

Abstract: An internal combustion engine includes a housing defining an internal cavity, an inner body sealingly moving within the internal cavity for defining at least one combustion chamber of variable volume, a pilot subchamber in communication with the at least one working chamber, an ignition element in communication with the pilot subchamber, a main injector communicating with the at least one combustion chamber, and a pilot injector having a tip in communication with the pilot subchamber. The tip of the pilot injector includes at least a first injection hole defining a first spray direction and a second injection hole defining a second spray direction different from the first spray direction. The first spray direction extends toward the communication between the pilot subchamber and the at least one working chamber. A method of performing combustion in an internal combustion engine is also discussed.