公开(公告)号：US12006882B1

公开(公告)日：2024-06-11

申请号：US18331687

申请日：2023-06-08

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Etienne Plamondon ,  Jonathan Brulatout

IPC: F02C9/40 ,  F02B53/02 ,  F02B53/10 ,  F02B53/00

CPC classification number: F02C9/40 ,  F02B53/02 ,  F02B53/10 ,  F02B2053/005 ,  F05D2220/323

Abstract: A rotary engine, has: an outer body defining a rotor cavity; a rotor within the rotor cavity and defining at least one chamber; a pilot subchamber defined by the outer body and having an outlet in communication with the rotor cavity; a main fuel source of a heavy fuel; an alternative fuel source of an alternative fuel; a main injector having a tip in communication with the rotor cavity at a location spaced apart from the outlet of the pilot subchamber, the main injector selectively fluidly connectable to the main fuel source or to the alternative fuel source; and a controller configured for: determining that the rotary engine is in a vicinity of a city or an airport; and operating the main injector in a first configuration in which the main injector fluidly connects the alternative fuel source to the rotor cavity while disconnecting the main fuel source.

公开(公告)号：US12234765B1

公开(公告)日：2025-02-25

申请号：US18413224

申请日：2024-01-16

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Etienne Plamondon ,  Jonathan Brulatout

IPC: F02B53/10 ,  F02B19/10 ,  F02B53/00 ,  F02B53/02 ,  F02B53/12

Abstract: A rotary engine, has: an outer body defining a rotor cavity; a rotor within the rotor cavity, the outer body and the rotor defining a combustion chamber; a pilot subchamber defined by the outer body and having an outlet communicating with the rotor cavity; a pilot injector having a pilot tip in communication with the pilot subchamber; a main injector having a tip in communication with the rotor cavity, the main injector having a fuel inlet fluidly connected to a fuel source, a fluid inlet fluidly connected to a fluid source, and an injector outlet in fluid communication with the rotor cavity independently of the pilot subchamber, the main injector having: a fuel-injection configuration in which the main injector connects the fuel source to the combustion chamber vi; and a fluid-injection configuration in which the main injector connects the fluid source to the combustion chamber.

公开(公告)号：US11905836B1

公开(公告)日：2024-02-20

申请号：US18331295

申请日：2023-06-08

Applicant: PRATT & WHITNEY CANADA CORP.

Inventor： Jonathan Brulatout ,  Etienne Plamondon

IPC: F02B53/10 ,  F01C1/22 ,  F02M21/02 ,  F02M61/14

CPC classification number: F01C1/22 ,  F02M21/0203 ,  F02M61/14

Abstract: A rotary engine, has: an outer body defining a rotor cavity; a rotor rotatable within the rotor cavity and in sealing engagement with walls of the outer body and defining at least one chamber of variable volume in the rotor cavity; a pilot subchamber defined by the outer body, the pilot subchamber having an outlet in fluid flow communication with the rotor cavity; and a fuel injector having a tip in communication with the rotor cavity at a location spaced apart from the outlet of the pilot subchamber, the tip of the fuel injector having: a first outlet in fluid communication with the rotor cavity independently of the pilot subchamber; and a second outlet in fluid communication with the rotor cavity through the pilot subchamber.