Patents by Inventor Dirk Schroeder
Dirk Schroeder 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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Publication number: 20220324296Abstract: A method for operating a coolant circuit of a refrigeration system of a vehicle having multiple system sections. A single pressure sensor is located in each system section. A temperature sensor is arranged downstream at each component to be balanced in the system sections, such as heat exchangers and a coolant compressor. The sensor signals of the pressure and temperature sensors are supplied to a control unit for the control or regulation of the refrigeration system. Furthermore, a pressure approximation value at the position of the temperature sensor is calculated by a pressure loss value determined using a pressure loss calculation function starting from the position of the pressure sensor arranged in the system section of the component up to the position of the temperature sensor if the temperature sensor and the pressure sensor are arranged at different positions in the system section.Type: ApplicationFiled: February 19, 2020Publication date: October 13, 2022Applicant: AUDI AGInventors: Dirk SCHROEDER, Christian REBINGER, Helmut ROTTENKOLBER
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Publication number: 20220297504Abstract: A modular cooling system for a vehicle including a base module having a refrigerant compressor, a high-pressure section having a direct or indirect condenser or gas cooler, and a low-pressure section having an evaporator and a chiller having chiller expansion elements connected upstream. The low-pressure section is connected via a heat pump expansion element to the high-pressure section. A first supplementary module has a heating branch having a heat pump heat exchanger, which is connectable via a first reheating branch having a valve element to the direct or indirect condenser or gas cooler, and a heat pump recirculation branch having a blockable valve element for connecting the direct or indirect condenser or gas cooler to the low-pressure section.Type: ApplicationFiled: September 22, 2020Publication date: September 22, 2022Applicant: AUDI AGInventors: Dirk SCHROEDER, Christian REBINGER, Helmut ROTTENKOLBER
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Patent number: 11364770Abstract: A refrigeration system for a vehicle including a refrigerant circuit having a double-flow heat exchanger, it being possible to operate the heat exchanger as a refrigerant condenser/gas cooler for an AC mode or as an air heat pump evaporator for a heat pump mode. The first flow of the heat exchanger has a first refrigerant connection and the second flow of the heat exchanger has a second refrigerant connection. For double flow through the heat exchanger in AC mode the first refrigerant connection is a refrigerant inlet and the second refrigerant connection is a refrigerant outlet. For single flow through the heat exchanger in heat pump mode the second refrigerant connection is a refrigerant inlet.Type: GrantFiled: March 5, 2018Date of Patent: June 21, 2022Assignee: AUDI AGInventors: Dirk Schroeder, Christian Rebinger, Helmut Rottenkolber
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Patent number: 11325446Abstract: A method for operating a refrigeration system for a vehicle with a refrigerant circuit including a heat exchanger. A controllable environmental air flow (L) is flowed through the heat exchanger and the heat exchanger can be operated as a refrigerant condenser or a gas cooler for a refrigeration system operation.Type: GrantFiled: September 4, 2019Date of Patent: May 10, 2022Assignee: AUDI AGInventors: Dirk Schroeder, Helmut Rottenkolber
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Patent number: 11279205Abstract: A method for operating a coolant circuit of a vehicle cooling system in an AC mode and in a heating mode, implemented by a heat pump function, having an evaporator branch including an evaporator and a first expansion element, a coolant compressor, an AC and heat pump branch, having an outer condenser or gas cooler, as a heat pump evaporator having a second expansion element. The AC and heat pump branch is connected to the coolant compressor via a first blocking element and to the evaporator branch via the second expansion element, a heating branch having an inner heating condenser or heating gas cooler and a second blocking element, connected downstream thereto.Type: GrantFiled: October 1, 2018Date of Patent: March 22, 2022Assignee: AUDI AGInventors: Dirk Schroeder, Christian Rebinger
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Patent number: 11197119Abstract: This disclosure relates to techniques for generating physically accurate auralization of sound propagation in complex environments, while accounting for important wave effects, such as sound absorption, sound scattering, and airborne sound insulation between rooms. According to some embodiments, techniques may be utilized to determine more accurate, e.g., “acoustically-effective” room volumes that account for open windows, open doors, acoustic dead space, and the like. According to other embodiments disclosed herein, techniques may be utilized to perform optimized hybrid acoustical ray tracing, including grouping coherent rays by processing core.Type: GrantFiled: February 21, 2018Date of Patent: December 7, 2021Assignee: Apple Inc.Inventors: Dirk Schroeder, Soenke Pelzer
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Patent number: 11172320Abstract: This disclosure relates to techniques for generating physically accurate auralization of sound propagation in complex environments, while accounting for important wave effects, such as sound absorption, sound scattering, and airborne sound insulation between rooms. According to some embodiments, techniques may be utilized to determine more accurate, e.g., “acoustically-effective” room volumes that account for open windows, open doors, acoustic dead space, and the like. According to other embodiments disclosed herein, techniques may be utilized to perform optimized hybrid acoustical ray tracing, including grouping coherent rays by processing core.Type: GrantFiled: February 21, 2018Date of Patent: November 9, 2021Assignee: Apple Inc.Inventors: Soenke Pelzer, Dirk Schroeder
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Patent number: 11170139Abstract: This disclosure relates to techniques for generating physically accurate auralization of sound propagation in complex environments, while accounting for important wave effects, such as sound absorption, sound scattering, and airborne sound insulation between rooms. According to some embodiments, techniques may be utilized to determine more accurate, e.g., “acoustically-effective” room volumes that account for open windows, open doors, acoustic dead space, and the like. According to other embodiments disclosed herein, techniques may be utilized to perform optimized hybrid acoustical ray tracing, including grouping coherent rays by processing core.Type: GrantFiled: February 21, 2018Date of Patent: November 9, 2021Assignee: Apple Inc.Inventors: Dirk Schroeder, Soenke Pelzer
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Publication number: 20210329405Abstract: Processing sound in an enhanced reality environment can include generating, based on an image of a physical environment, an acoustic model of the physical environment. Audio signals captured by a microphone array, can capture a sound in the physical environment. Based on these audio signals, one or more measured acoustic parameters of the physical environment can be generated. A target audio signal can be processed using the model of the physical environment and the measured acoustic parameters, resulting in a plurality of output audio channels having a virtual sound source with a virtual location. The output audio channels can be used to drive a plurality of speakers. Other aspects are also described and claimed.Type: ApplicationFiled: June 28, 2021Publication date: October 21, 2021Inventors: Christopher T. Eubank, Joshua D. Atkins, Soenke Pelzer, Dirk Schroeder
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Publication number: 20210329381Abstract: An audio device can sense sound in a physical environment using a plurality of microphones to generate a plurality of microphone signals. Clean speech can be extracted from microphone signals. Ambience can be extracted from the microphone signals. The clean speech can be encoded at a first compression level. The ambience can be encoded at a second compression level that is higher than the first compression level. Other aspects are also described and claimed.Type: ApplicationFiled: June 28, 2021Publication date: October 21, 2021Inventors: Tomlinson Holman, Christopher T. Eubank, Joshua D. Atkins, Soenke Pelzer, Dirk Schroeder
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Publication number: 20210268868Abstract: A method for operating a refrigeration system for a vehicle, which refrigeration system includes a refrigerant circuit having a heat pump function. The refrigerant circuit has an exterior heat exchanger, which is operated as a condenser or gas cooler in order to perform a refrigeration system mode or as a heat pump evaporator in order to carry out a heat pump mode. The refrigerant circuit has an interior heating condenser or heating gas cooler for carrying out a heating mode. The interior heating condenser or heating gas cooler is fluidically connected to the exterior heat exchanger, downstream, by a post-heating expansion device in order to carry out a post-heating mode. The opening cross-section of the post-heating expansion device is controlled in accordance with a refrigeration system parameter indicating the required post-heating power.Type: ApplicationFiled: August 2, 2019Publication date: September 2, 2021Applicant: AUDI AGInventors: Dirk SCHROEDER, Christian REBINGER, Helmut ROTTENKOLBER
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Patent number: 11104204Abstract: A method for operating a cooling circuit. It is provided that a) the actuation signal ST of the coolant compressor is provided so as to increase over time from a minimum value (STmin) in order to generate a start-up phase of the coolant compressor, b) a control signal maximum value (STmax) and a control signal threshold (STSW) are provided, where STSW<STmax, c) the actuation signal (ST) is limited to the control signal maximum value (STmax) if the actuation signal (ST) reaches the control signal threshold (STSW) and the measured high and/or low-pressure value (PHD, PND) satisfies a condition.Type: GrantFiled: March 1, 2018Date of Patent: August 31, 2021Assignee: AUDI AGInventors: Dirk Schroeder, Christian Rebinger, Helmut Rottenkolber, Jan Wack
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Patent number: 11070933Abstract: A computer system having an electronic device determines a listener position within a computer-generated reality (CGR) setting that is to be aurally experienced by a user of the electronic device through at least one speaker. The system determines a source position of a virtual sound source within the CGR setting and determines a characteristic of a virtual object within the CGR setting, where the characteristic include a geometry of an edge of the virtual object. The system determines at least one edge-diffraction filter parameter for an edge-diffraction filter based on 1) the listener position, 2) the source position, and 3) the geometry. The system applies the edge-diffraction filter to an input audio signal to produce a filtered audio signal that accounts for edge-diffraction of sound produced by the virtual sound source within the CGR setting.Type: GrantFiled: July 29, 2020Date of Patent: July 20, 2021Assignee: APPLE INC.Inventors: Dirk Schroeder, Jonathan D. Sheaffer, Soenke Pelzer, Juha O. Merimaa
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Publication number: 20210148616Abstract: A refrigeration system for a vehicle including a refrigerant circuit having a double-flow heat exchanger, it being possible to operate the heat exchanger as a refrigerant condenser/gas cooler for an AC mode or as an air heat pump evaporator for a heat pump mode. The first flow of the heat exchanger has a first refrigerant connection and the second flow of the heat exchanger has a second refrigerant connection. For double flow through the heat exchanger in AC mode the first refrigerant connection is a refrigerant inlet and the second refrigerant connection is a refrigerant outlet. For single flow through the heat exchanger in heat pump mode the second refrigerant connection is a refrigerant inlet.Type: ApplicationFiled: March 5, 2018Publication date: May 20, 2021Applicant: AUDI AGInventors: Dirk SCHROEDER, Christian REBINGER, Helmut ROTTENKOLBER
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Patent number: 10914504Abstract: The invention relates to a device and a method for icing prevention regulation for a heat pump evaporator (3) in air conditioning systems of vehicles, composed of a subsection (1) of a refrigerant circuit which can be operated both as a heat pump and also as an air conditioning system. The device comprises the heat pump evaporator (3), an electrical or mechanical refrigerant compressor (4), a cooler fan (9) which is attached to the heat pump evaporator (3) and which draws ambient air (11) upstream from and through the heat pump evaporator (3) at an adjustable flow speed, and which thus permits a permanent flow of ambient air (11) over the heat pump evaporator surface, a first temperature sensor (6) in or on the refrigerant line (5, 5a) upstream from the heat pump evaporator (3) with respect to the heat pump operating direction, and a control and regulating unit (8).Type: GrantFiled: March 8, 2013Date of Patent: February 9, 2021Assignees: Audi AG, Halla Visteon Climate Control CorporationInventors: Engelbert Schmitz, Peter Heyl, Marc Graaf, Christian Rebinger, Dirk Schroeder
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Publication number: 20200269654Abstract: A method for operating a coolant circuit of a vehicle cooling system in an AC mode and in a heating mode, implemented by a heat pump function, having an evaporator branch including an evaporator and a first expansion element, a coolant compressor, an AC and heat pump branch, having an outer condenser or gas cooler, as a heat pump evaporator having a second expansion element. The AC and heat pump branch is connected to the coolant compressor via a first blocking element and to the evaporator branch via the second expansion element, a heating branch having an inner heating condenser or heating gas cooler and a second blocking element, connected downstream thereto.Type: ApplicationFiled: October 1, 2018Publication date: August 27, 2020Applicant: AUDI AGInventors: Dirk SCHROEDER, Christian REBINGER
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Publication number: 20200247213Abstract: A method of operating a refrigerant circuit of a cooling system of a vehicle in cooling system mode, having a chiller branch which includes a chiller and a first expansion element connected upstream from it and being thermally coupled to a coolant circuit, at least one interior evaporator branch connected in parallel with the chiller branch, comprising an interior evaporator, a second expansion element connected upstream from it, and a segmentation element connected downstream from the interior evaporator, being adapted to prevent a backflow of refrigerant into the interior evaporator, a refrigerant compressor, and a condenser or gas cooler, wherein the cooling system mode is carried out in single chiller mode by closing the second expansion element and aspirating the refrigerant from the interior evaporator by the starting or already started refrigerant compressor.Type: ApplicationFiled: January 8, 2020Publication date: August 6, 2020Applicant: AUDI AGInventors: Dirk SCHROEDER, Helmut ROTTENKOLBER
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Publication number: 20200130468Abstract: A method for operating a cooling circuit. It is provided that a) the actuation signal ST of the coolant compressor is provided so as to increase over time from a minimum value (STmin) in order to generate a start-up phase of the coolant compressor, b) a control signal maximum value (STmax) and a control signal threshold (STSW) are provided, where STSW<STmax, c) the actuation signal (ST) is limited to the control signal maximum value (STmax) if the actuation signal (ST) reaches the control signal threshold (STSW) and the measured high and/or low-pressure value (PHD, PND) satisfies a condition.Type: ApplicationFiled: March 1, 2018Publication date: April 30, 2020Applicant: Audi AGInventors: Dirk SCHROEDER, Christian REBINGER, Helmut ROTTENKOLBER, Jan WACK
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Publication number: 20200070629Abstract: A method for operating a refrigeration system for a vehicle with a refrigerant circuit comprising a heat exchanger, wherein the heat exchanger is flowed through by a controllable environmental air flow (L) and can be operated as refrigerant condenser or gas cooler for a refrigeration system operation.Type: ApplicationFiled: September 4, 2019Publication date: March 5, 2020Applicant: AUDI AGInventors: Dirk SCHROEDER, Helmut ROTTENKOLBER
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Publication number: 20200023709Abstract: A cooling system of a vehicle, including a coolant circuit, which can be operated as a cooling circuit for an AC operation and as a heat pump circuit for a heating operation, an evaporator, a coolant compressor, a heat exchanger in the form of a coolant condenser or gas cooler for the coolant circuit or in the form of a heat pump evaporator for the heat pump circuit, a first expansion element which is paired with the evaporator, a second expansion element, the heat pump evaporator function of which is paired with the heat exchanger, and an inner heat exchanger with a high-pressure section and a low-pressure section. The low-pressure section is fluidically connected to the downstream coolant compressor. The high-pressure section of the inner heat exchanger is arranged in a coolant circuit section which connects the second expansion element to the heat exchanger.Type: ApplicationFiled: March 5, 2018Publication date: January 23, 2020Applicant: AUDI AGInventors: Dirk SCHROEDER, Christian REBINGER, Thomas ANZENBERGER