Patents by Inventor Edwin Schulz
Edwin Schulz has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11428128Abstract: A rotary internal combustion engine with a housing having a fluid passage defined therethrough opening into a portion of its inner surface engaging each peripheral or apex seal of the rotor. An injector has an inlet for fluid communication with a pressurized lubricant source and a selectively openable and closable outlet in fluid communication with the fluid passage for delivering the pressurized lubricant to each seal through the fluid passage. A housing for a Wankel engine and a method of lubricating peripheral seals of a rotor in an internal combustion engine are also discussed.Type: GrantFiled: April 14, 2021Date of Patent: August 30, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Edwin Schulz, Etienne Plamondon, Jean Thomassin
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Patent number: 11306651Abstract: 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.Type: GrantFiled: September 25, 2020Date of Patent: April 19, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Andre Julien, Edwin Schulz
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Patent number: 11261781Abstract: A rotary internal combustion engine including a rotor assembly where at least a first and a second of the combustion chambers have unequal theoretical volumetric ratios. Also, a rotary internal combustion engine including first and second rotor assemblies where at least one of the combustion chambers of the first rotor assembly and at least one of the combustion chambers of the second rotor assembly have unequal effective volumetric compression ratios and/or unequal effective volumetric expansion ratios.Type: GrantFiled: December 17, 2019Date of Patent: March 1, 2022Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Serge Dussault, Andre Julien, Michael Lanktree, Edwin Schulz
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Patent number: 11187143Abstract: 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 ) < 1. An engine assembly is also discussed.Type: GrantFiled: December 19, 2019Date of Patent: November 30, 2021Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Andre Julien, Edwin Schulz, Michael Lanktree, Serge Dussault
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Publication number: 20210231033Abstract: A rotary internal combustion engine with a housing having a fluid passage defined therethrough opening into a portion of its inner surface engaging each peripheral or apex seal of the rotor. An injector has an inlet for fluid communication with a pressurized lubricant source and a selectively openable and closable outlet in fluid communication with the fluid passage for delivering the pressurized lubricant to each seal through the fluid passage. A housing for a Wankel engine and a method of lubricating peripheral seals of a rotor in an internal combustion engine are also discussed.Type: ApplicationFiled: April 14, 2021Publication date: July 29, 2021Inventors: Edwin SCHULZ, Etienne PLAMONDON, Jean THOMASSIN
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Patent number: 11028768Abstract: A rotary engine having an outer body having an internal cavity with a peripheral wall having an insert opening defined therethrough in communication with the internal cavity, and a plurality of coolant passages defined through the peripheral wall in proximity of the insert opening, a rotor body rotatable within the internal cavity, and an insert removably received in the insert opening of the peripheral wall, the insert having a subchamber defined therein communicating with the internal cavity, with a minimum width of the insert opening being at least 0.75 inches. An outer body for a rotary engine and a method of inspecting in an internal cavity in an outer body of a rotary engine are also discussed; also, a rotary engine including a fuel injector having a tip received in the injector hole of the peripheral wall without protruding in the insert opening.Type: GrantFiled: January 21, 2020Date of Patent: June 8, 2021Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Bruno Villeneuve, Edwin Schulz
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Patent number: 11008909Abstract: A rotary internal combustion engine with a housing having a fluid passage defined therethrough opening into a portion of its inner surface engaging each peripheral or apex seal of the rotor. An injector has an inlet for fluid communication with a pressurized lubricant source and a selectively openable and closable outlet in fluid communication with the fluid passage for delivering the pressurized lubricant to each seal through the fluid passage. A housing for a Wankel engine and a method of lubricating peripheral seals of a rotor in an internal combustion engine are also discussed.Type: GrantFiled: January 23, 2020Date of Patent: May 18, 2021Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Edwin Schulz, Etienne Plamondon, Jean Thomassin
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Publication number: 20210010414Abstract: 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.Type: ApplicationFiled: September 25, 2020Publication date: January 14, 2021Inventors: Andre JULIEN, Edwin SCHULZ
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Patent number: 10865699Abstract: 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, a second measurement of the actual value of a temperature in the subchamber, and at least one third measurement of at least one aircraft operating parameter are received. A setpoint for the temperature in the subchamber is determined from the at least one first measurement and the at least one third measurement. At least one control signal is output to the engine for adjusting the actual value of the temperature in the subchamber towards the setpoint.Type: GrantFiled: March 19, 2019Date of Patent: December 15, 2020Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Jean Thomassin, Edwin Schulz
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Patent number: 10815877Abstract: 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.Type: GrantFiled: January 18, 2017Date of Patent: October 27, 2020Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Andre Julien, Edwin Schulz
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Patent number: 10801394Abstract: A rotary engine including at least two pilot subchambers each in parallel fluid communication with the internal cavity, so that each pilot subchamber is in fluid communication with the combustion chambers as the rotor rotates. Each of the at least two pilot subchambers in fluid communication with a corresponding pilot fuel injector. At least one ignition source is configured for igniting fuel in the pilot subchambers. A compound engine assembly and a method of combusting fuel in a rotary engine are also discussed.Type: GrantFiled: November 29, 2017Date of Patent: October 13, 2020Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Serge Dussault, Andre Julien, Michael Lanktree, Edwin Schulz
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Publication number: 20200158011Abstract: A rotary engine having an outer body having an internal cavity with a peripheral wall having an insert opening defined therethrough in communication with the internal cavity, and a plurality of coolant passages defined through the peripheral wall in proximity of the insert opening, a rotor body rotatable within the internal cavity, and an insert removably received in the insert opening of the peripheral wall, the insert having a subchamber defined therein communicating with the internal cavity, with a minimum width of the insert opening being at least 0.75 inches. An outer body for a rotary engine and a method of inspecting in an internal cavity in an outer body of a rotary engine are also discussed; also, a rotary engine including a fuel injector having a tip received in the injector hole of the peripheral wall without protruding in the insert opening.Type: ApplicationFiled: January 21, 2020Publication date: May 21, 2020Inventors: Bruno VILLENEUVE, Edwin SCHULZ
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Publication number: 20200157985Abstract: A rotary internal combustion engine with a housing having a fluid passage defined therethrough opening into a portion of its inner surface engaging each peripheral or apex seal of the rotor. An injector has an inlet for fluid communication with a pressurized lubricant source and a selectively openable and closable outlet in fluid communication with the fluid passage for delivering the pressurized lubricant to each seal through the fluid passage. A housing for a Wankel engine and a method of lubricating peripheral seals of a rotor in an internal combustion engine are also discussed.Type: ApplicationFiled: January 23, 2020Publication date: May 21, 2020Inventors: Edwin SCHULZ, Etienne PLAMONDON, Jean THOMASSIN
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Publication number: 20200149467Abstract: A method for starting a turbocompounded engine system having an internal combustion engine and a turbomachinery driving a load, the method comprising: mechanically disengaging the internal combustion engine from at least one of the load and/or the turbomachinery before starting the internal combustion engine. The engine is allowed to warm up and then the engine is re-engaged with the at least one of the load and the turbomachinery.Type: ApplicationFiled: November 8, 2018Publication date: May 14, 2020Inventors: Edwin SCHULZ, Francois BELLEVILLE
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Publication number: 20200123964Abstract: 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 ) < 1. An engine assembly is also discussed.Type: ApplicationFiled: December 19, 2019Publication date: April 23, 2020Inventors: Andre JULIEN, Edwin SCHULZ, Michael LANKTREE, Serge DUSSAULT
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Publication number: 20200123970Abstract: A rotary internal combustion engine including a rotor assembly where at least a first and a second of the combustion chambers have unequal theoretical volumetric ratios. Also, a rotary internal combustion engine including first and second rotor assemblies where at least one of the combustion chambers of the first rotor assembly and at least one of the combustion chambers of the second rotor assembly have unequal effective volumetric compression ratios and/or unequal effective volumetric expansion ratios.Type: ApplicationFiled: December 17, 2019Publication date: April 23, 2020Inventors: Serge DUSSAULT, Andre JULIEN, Michael LANKTREE, Edwin SCHULZ
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Patent number: 10570789Abstract: A rotary internal combustion engine with a housing having a fluid passage defined therethrough opening into a portion of its inner surface engaging each peripheral or apex seal of the rotor. An injector has an inlet for fluid communication with a pressurized lubricant source and a selectively openable and closable outlet in fluid communication with the fluid passage for delivering the pressurized lubricant to each seal through the fluid passage. A housing for a Wankel engine and a method of lubricating peripheral seals of a rotor in an internal combustion engine are also discussed.Type: GrantFiled: June 17, 2016Date of Patent: February 25, 2020Assignee: Pratt & Whitney Canada Corp.Inventors: Edwin Schulz, Etienne Plamondon, Jean Thomassin
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Patent number: 10557407Abstract: 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.Type: GrantFiled: November 29, 2017Date of Patent: February 11, 2020Assignee: Pratt & Whitney Canada Corp.Inventors: Serge Dussault, Andre Julien, Michael Lanktree, Edwin Schulz, Jean Thomassin, Nigel Davenport, Eugene Gekht
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Patent number: 10544732Abstract: A rotary engine having an outer body having an internal cavity with a peripheral wall having an insert opening defined therethrough in communication with the internal cavity, and a plurality of coolant passages defined through the peripheral wall in proximity of the insert opening, a rotor body rotatable within the internal cavity, and an insert removably received in the insert opening of the peripheral wall, the insert having a subchamber defined therein communicating with the internal cavity, with a minimum width of the insert opening being at least 0.75 inches. An outer body for a rotary engine and a method of inspecting in an internal cavity in an outer body of a rotary engine are also discussed; also, a rotary engine including a fuel injector having a tip received in the injector hole of the peripheral wall without protruding in the insert opening.Type: GrantFiled: May 12, 2016Date of Patent: January 28, 2020Assignee: PRATT & WHITNEY CANADA CORP.Inventors: Bruno Villeneuve, Edwin Schulz
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Patent number: 10539065Abstract: 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 ) < 1. An engine assembly is also discussed.Type: GrantFiled: June 15, 2017Date of Patent: January 21, 2020Assignee: Pratt & Whitney Canada Corp.Inventors: Andre Julien, Edwin Schulz, Michael Lanktree, Serge Dussault