公开(公告)号：US11187143B2

公开(公告)日：2021-11-30

申请号：US16720059

申请日：2019-12-19

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Andre Julien ,  Edwin Schulz ,  Michael Lanktree ,  Serge Dussault

IPC: F02B29/04 ,  F02B37/00 ,  F02B37/10 ,  F02B39/04 ,  F02B41/10 ,  F02B53/04 ,  F02B53/08 ,  F02B61/04 ,  F01C1/22 ,  F02D41/00 ,  F02B53/00

Abstract: A method of operating an engine assembly receiving fuel, including admitting atmospheric air at a temperature T1 through an inlet of a compressor having a pressure ratio of PRGT, compressing the air in the compressor, cooling the compressed air from the compressor through an intercooler to cool the air from a temperature TBIC to a temperature TAIC, delivering the cooled compressed air from the intercooler to an inlet of an intermittent internal combustion engine having an effective volumetric compression ratio rVC, and further compressing the air in the intermittent internal combustion engine before igniting the fuel, where ( PR GT ) a ⁢ ( r VC ) b ⁢ ( T AIC T BIC ) ⁢ ( T 1 T A )

公开(公告)号：US10823097B2

公开(公告)日：2020-11-03

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 ,  F02B53/02 ,  F02D41/38 ,  F02D41/40 ,  F02B77/08 ,  F02B53/00

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：US10557407B2

公开(公告)日：2020-02-11

申请号：US15825683

申请日：2017-11-29

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Serge Dussault ,  Andre Julien ,  Michael Lanktree ,  Edwin Schulz ,  Jean Thomassin ,  Nigel Davenport ,  Eugene Gekht

IPC: F02B55/08 ,  F02B53/12 ,  F02B53/02 ,  F02B19/12 ,  F02B53/10 ,  F01C21/18 ,  F01C21/10 ,  F01C21/06 ,  F01C1/22 ,  F02B19/10 ,  F04C29/00 ,  F01C21/08 ,  F01C20/24 ,  F01C20/10 ,  F01C20/06 ,  F01C11/00

Abstract: A rotary engine including a rotor sealingly received within an internal cavity of an outer body to define a plurality of combustion chambers having a variable volume, a pilot subchamber located in a wall of the outer body, the pilot subchamber in fluid communication with the internal cavity via at least two spaced apart transfer holes defining a flow restriction between the pilot subchamber and the internal cavity, a pilot fuel injector in fluid communication with the pilot subchamber, an ignition element configured for igniting fuel in the pilot subchamber, and a main fuel injector extending through the stator body and communicating with the cavity at a location spaced apart from the pilot subchamber. A method of combusting fuel in a rotary engine is also discussed.

公开(公告)号：US10138804B2

公开(公告)日：2018-11-27

申请号：US15794492

申请日：2017-10-26

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jean Thomassin ,  Andre Julien ,  Edwin Schulz ,  Michael Lanktree

IPC: F02B53/00 ,  F02B53/06 ,  F01C1/22 ,  F01C20/06 ,  F01C20/10 ,  F01C20/24 ,  F01C21/08 ,  F01C21/10 ,  F01C21/18 ,  F02B53/04 ,  F02B53/02 ,  F02B55/16 ,  F01C11/00 ,  F01C21/06 ,  F04C29/00

Abstract: A method of controlling an air intake flow in a rotary engine having primary and secondary inlet ports, including positioning the secondary inlet port rearwardly of the primary inlet port and forwardly of the exhaust port along a direction of a revolution of the rotor, providing independently closable communications between an air source and the primary and secondary inlet ports, and controlling air intake flows between the air source and the primary and secondary inlet ports. Controlling air intake flows includes simultaneously allowing the air intake flow between the primary inlet port and the air source and between the secondary inlet port and the air source. Exhaust gases of the engine are purged with the air intake flow of the secondary inlet port. A rotary engine is also discussed.

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.