Patents by Inventor Varun RAMESH

Varun RAMESH 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).

  • Publication number: 20250092809
    Abstract: A heavy duty truck includes a diesel engine that generates an exhaust gas flow and an exhaust after-treatment system for treatment of the exhaust gas flow. The exhaust after-treatment system includes at least one heater and at least one selective catalytic reduction system downstream of the heater. The heater is operated to inject supplemental heat energy into the exhaust gas flow at a rate based on a difference between a target rate of heat energy in the exhaust gas flow at an inlet to the selective catalytic reduction system and a rate of heat energy supplied to the exhaust gas flow from the diesel engine.
    Type: Application
    Filed: September 9, 2024
    Publication date: March 20, 2025
    Inventors: Cynthia Chaffin Webb, Charles Wayne Reinhardt Swart, Maarten Meijer, Varun Ramesh, John Lahti
  • Publication number: 20250037406
    Abstract: An arrangement for a driver assistance system of a vehicle, includes a radiation source for emitting infrared radiation, a radiation receiver for receiving infrared radiation, a windshield formed of an outer pane and an inner pane which are connected to one another via a thermoplastic intermediate layer, wherein the windshield has at least one functional layer reflecting infrared radiation, wherein the radiation source is arranged such that infrared radiation can be reflected from the functional layer as first reflection radiation onto the face of a driver, the first reflection radiation can be reflected from the face of the driver as second reflection radiation onto the functional layer, and wherein the radiation receiver is arranged such that the second reflection radiation reflected from the functional layer as third reflection radiation can be reflected to the radiation receiver and received by the radiation receiver.
    Type: Application
    Filed: September 7, 2022
    Publication date: January 30, 2025
    Inventors: Michele CAPPUCCILLI, Jefferson DO ROSARIO, Varun RAMESH KUMAR, Markus KEWITZ, Andreas GOMER
  • Patent number: 12085001
    Abstract: A heavy duty truck includes a diesel engine that generates an exhaust gas flow and an exhaust after-treatment system for treatment of the exhaust gas flow. The exhaust after-treatment system includes at least one heater and at least one selective catalytic reduction system downstream of the heater. The heater is operated to inject supplemental heat energy into the exhaust gas flow at a rate based on a difference between a target rate of heat energy in the exhaust gas flow at an inlet to the selective catalytic reduction system and a rate of heat energy supplied to the exhaust gas flow from the diesel engine.
    Type: Grant
    Filed: June 28, 2023
    Date of Patent: September 10, 2024
    Assignee: PACCAR Inc
    Inventors: Cynthia Chaffin Webb, Charles Wayne Reinhardt Swart, Maarten Meijer, Varun Ramesh, John Lahti
  • Patent number: 12068524
    Abstract: A vehicle pane has a first substrate and at least one first electrically conducting layer, wherein an antenna structure is formed in the electrically conducting layer, wherein the antenna structure provides a Vivaldi-antenna-like structure, wherein the antenna structure has two substantially identical antenna elements, wherein the two antenna elements are arranged at an angle relative to one another, wherein the angle is greater than 0° and less than 180° such that the antenna elements appear substantially as mirror images at the angle bisector.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: August 20, 2024
    Assignee: SAINT-GOBAIN GLASS FRANCE
    Inventors: Adrien Guth, Guillaume Francois, Guillaume Petitdidier, Varun Ramesh Kumar
  • Patent number: 12066296
    Abstract: Aspects are described herein that are capable of providing a vehicle configuration for a vehicle that is optimized to maximize the customer's performance priorities while additionally complying with regulatory emissions requirements and equipment regulations. A machine learning (ML) predictive model is trained based on simulations run on combinations of vehicle configurations and routes and on real-world telematics data, and used to determine a vehicle configuration optimized for a representative route.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: August 20, 2024
    Assignee: PACCAR Inc.
    Inventors: Varun Ramesh, Shreyash Ukidave, Michael Douglas Gerty
  • Patent number: 12057624
    Abstract: A vehicle pane includes a first substrate, at least one antenna structure and a connection region, wherein the antenna structure is arranged on a flexible film, wherein, additionally, a first line region is provided on the flexible film, wherein the connection region is arranged on a carrier, wherein, additionally, a second line region is provided on the carrier, wherein the flexible film has a first contact region and the carrier has a second contact region for the reciprocal connection of the first line region to the second line region, wherein the flexible film is routed around one end of the first substrate.
    Type: Grant
    Filed: April 23, 2020
    Date of Patent: August 6, 2024
    Assignee: SAINT-GOBAIN GLASS FRANCE
    Inventors: Varun Ramesh Kumar, Guillaume Francois, Thomas Holtstiege
  • Publication number: 20240209763
    Abstract: A heavy-duty truck has a diesel engine, an exhaust after-treatment system, and an engine control unit. The exhaust after-treatment system includes a close-coupled selective catalytic reduction system and an underbody selective catalytic reduction system, a first NOx sensor upstream of the close-coupled selective catalytic reduction system, a second NOx sensor between the two selective catalytic reduction systems, and a third NOx sensor downstream of the underbody selective catalytic reduction system. The engine control unit may perform methods allowing intrusive diagnostics to be performed on exhaust gas NOx sensors using the selective catalytic reduction systems during normal operation of the heavy-duty truck.
    Type: Application
    Filed: December 29, 2023
    Publication date: June 27, 2024
    Inventors: Cynthia Chaffin Webb, Charles Wayne Reinhardt Swart, Maarten Meijer, Varun Ramesh
  • Publication number: 20240157912
    Abstract: A pane arrangement with a heatable sensor window includes a composite pane including an outer pane having an exterior-side surface and an interior-side surface and an inner pane having an exterior-side surface and an interior-side surface, which are joined to one another via at least one thermoplastic intermediate layer; an enclosure arranged on the interior-side surface of the inner pane and having an inner surface and an outer surface; a radiation receiver and/or a radiation source, which face(s) the composite pane within the enclosure such that a beam path of electromagnetic radiation passes through a sensor window of the composite pane; a first heating element; and a second heating element. The first heating element is arranged below the beam path on the outer surface or on the inner surface of the enclosure and the second heating element is arranged in a region of the composite pane surrounding the sensor window.
    Type: Application
    Filed: April 8, 2022
    Publication date: May 16, 2024
    Inventors: Markus KEWITZ, Thomas GALLINELLI, Varun RAMESH KUMAR
  • Patent number: 11976582
    Abstract: The present disclosure describes methods for evaluating NOx conversion efficiency of a close coupled SCR unit of an EAS including the close coupled SCR unit and a downstream SCR unit. The determined NOx conversion efficiency of the close coupled SCR unit is used to diagnose the close coupled SCR unit and or EAS and to control operation parameters of the EAS and/or internal combustion engine operably connected to the EAS.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: May 7, 2024
    Assignee: PACCAR INC
    Inventors: Charles Wayne Reinhardt Swart, Cynthia Chaffin Webb, Maarten Meijer, Varun Ramesh
  • Patent number: 11927126
    Abstract: The present disclosure describes methods for evaluating quality of DEF dosed to an EAS including a close coupled SCR unit a downstream SCR unit. A NOx conversion efficiency of the close coupled SCR unit and a NOx conversion efficiency of the downstream SCR unit are used to evaluate quality of DEF. In some embodiments, the NOx conversion efficiency of close coupled SCR unit is used to evaluate quality of DEF. Operation of an EAS using the results of the evaluation of quality of DEF are described.
    Type: Grant
    Filed: October 13, 2022
    Date of Patent: March 12, 2024
    Assignee: PACCAR INC
    Inventors: Charles Wayne Reinhardt Swart, Cynthia Chaffin Webb, Maarten Meijer, Varun Ramesh
  • Publication number: 20240060439
    Abstract: A heavy duty truck includes a diesel engine that generates an exhaust gas flow and an exhaust after-treatment system for treatment of the exhaust gas flow. The exhaust after-treatment system includes at least one heater and at least one selective catalytic reduction system downstream of the heater. The heater is operated to inject supplemental heat energy into the exhaust gas flow at a rate based on a difference between a target rate of heat energy in the exhaust gas flow at an inlet to the selective catalytic reduction system and a rate of heat energy supplied to the exhaust gas flow from the diesel engine.
    Type: Application
    Filed: June 28, 2023
    Publication date: February 22, 2024
    Inventors: Cynthia Chaffin Webb, Charles Wayne Reinhardt Swart, Maarten Meijer, Varun Ramesh, John Lahti
  • Patent number: 11879367
    Abstract: A heavy-duty truck has a diesel engine, an exhaust after-treatment system, and an engine control unit. The exhaust after-treatment system includes a close-coupled selective catalytic reduction system and an underbody selective catalytic reduction system, a first NOx sensor upstream of the close-coupled selective catalytic reduction system, a second NOx sensor between the two selective catalytic reduction systems, and a third NOx sensor downstream of the underbody selective catalytic reduction system. The engine control unit may perform methods allowing intrusive diagnostics to be performed on exhaust gas NOx sensors using the selective catalytic reduction systems during normal operation of the heavy-duty truck.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: January 23, 2024
    Assignee: PACCAR Inc
    Inventors: Cynthia Chaffin Webb, Charles Wayne Reinhardt Swart, Maarten Meijer, Varun Ramesh
  • Patent number: 11828677
    Abstract: Aspects of systems, method, and computer-readable storage media are described herein that are configured to provide operator fleet performance benchmarking and analytics. A fleet analytics system may include user-friendly front end client application with which a non-technical user may interface, and a back end analytics and visualization system that is deployed on the cloud and offered as a service to determine a subset of ‘like operators’ to utilize as a baseline in a benchmark analysis, to benchmark a target operator's performance against the subset of like operators, determine analytics resulting from the benchmark analysis, and to generate visualizations of the analytics for display to the user/operator.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: November 28, 2023
    Assignee: PACCAR Inc.
    Inventors: Varun Ramesh, Carl Hergart, Cynthia Chaffin Webb, Jorge Rafael Lozada Ramirez
  • Patent number: 11725560
    Abstract: A heavy duty truck includes a diesel engine that generates an exhaust gas flow and an exhaust after-treatment system for treatment of the exhaust gas flow. The exhaust after-treatment system includes at least one heater and at least one selective catalytic reduction system downstream of the heater. The heater is operated to inject supplemental heat energy into the exhaust gas flow at a rate based on a difference between a target rate of heat energy in the exhaust gas flow at an inlet to the selective catalytic reduction system and a rate of heat energy supplied to the exhaust gas flow from the diesel engine.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: August 15, 2023
    Assignee: PACCAR INC
    Inventors: Cynthia Chaffin Webb, Charles Wayne Reinhardt Swart, Maarten Meijer, Varun Ramesh, John Lahti
  • Patent number: 11661880
    Abstract: A method of manufacturing an on-board diagnostic (OBD) limit part and a method of testing to evaluate an OBD system. The method of manufacturing the OBD limit part includes introducing a contaminant to a selective catalytic reduction (SCR) catalyst and contacting the contaminant with the SCR catalyst for a selected period of time. The method of manufacturing utilizes a vessel, the contaminant, and the SCR catalyst. The OBD limit part is a combination of the contaminant and the SCR catalyst within the vessel. The method of testing to evaluate the OBD system includes collecting data related to an exhaust gas before and after the exhaust gas is exposed to the OBD limit part, collecting an indication provided by the OBD system, and comparing the data related to the exhaust gas and the indication provided by the OBD system. The method of testing to evaluate the OBD system utilizes a system that includes an exhaust gas source, a first and a second fluid path, the OBD limit part, and the OBD system.
    Type: Grant
    Filed: October 28, 2021
    Date of Patent: May 30, 2023
    Assignee: PACCAR Inc
    Inventors: Varun Ramesh, Isaac Stark
  • Patent number: 11608766
    Abstract: The present disclosure describes methods for evaluating ammonia storage capacity of a close-coupled SCR unit while remaining compliant with prescribed emissions limits, methods of controlling an emission aftertreatment system including multiple SCR units and emission management systems for a vehicle including an internal combustion engine and an emission aftertreatment system that includes two or more SCR units.
    Type: Grant
    Filed: April 6, 2022
    Date of Patent: March 21, 2023
    Assignee: PACCAR INC
    Inventors: Charles Wayne Reinhardt Swart, Cynthia Chaffin Webb, Maarten Meijer, Varun Ramesh
  • Publication number: 20230066134
    Abstract: An insulating glass pane arrangement includes at least one first pane having a first surface and a second surface, wherein the first pane is designed as an inner pane, at least one second pane having a first surface and a second surface, wherein the second pane is designed as an outer pane, at least one first cavity that is arranged between the first pane and the second pane, at least one component arranged in the first cavity including a data memory, a read-out device with an active transmitting device, and an energy harvesting element, wherein the read-out device and the energy harvesting element are designed for read-out and energy harvesting through the first pane.
    Type: Application
    Filed: January 21, 2021
    Publication date: March 2, 2023
    Inventors: Christian EFFERTZ, Shelby Doane CRAIG, Varun RAMESH KUMAR
  • Publication number: 20230034184
    Abstract: The present disclosure describes methods for evaluating quality of DEF dosed to an EAS including a close coupled SCR unit a downstream SCR unit. A NOx conversion efficiency of the close coupled SCR unit and a NOx conversion efficiency of the downstream SCR unit are used to evaluate quality of DEF. In some embodiments, the NOx conversion efficiency of close coupled SCR unit is used to evaluate quality of DEF. Operation of an EAS using the results of the evaluation of quality of DEF are described.
    Type: Application
    Filed: October 13, 2022
    Publication date: February 2, 2023
    Inventors: Charles Wayne Reinhardt SWART, Cynthia Chaffin WEBB, Maarten MEIJER, Varun RAMESH
  • Publication number: 20220416399
    Abstract: A vehicle pane has a first substrate and at least one first electrically conducting layer, wherein an antenna structure is formed in the electrically conducting layer, wherein the antenna structure provides a Vivaldi-antenna-like structure, wherein the antenna structure has two substantially identical antenna elements, wherein the two antenna elements are arranged at an angle relative to one another, wherein the angle is greater than 0° and less than 180° such that the antenna elements appear substantially as mirror images at the angle bisector.
    Type: Application
    Filed: December 2, 2020
    Publication date: December 29, 2022
    Inventors: Adrien GUTH, Guillaume FRANCOIS, Guillaume PETITDIDIER, Varun RAMESH KUMAR
  • Patent number: 11499463
    Abstract: The present disclosure describes methods for evaluating quality of DEF dosed to an EAS including a close coupled SCR unit a downstream SCR unit. A NOx conversion efficiency of the close coupled SCR unit and a NOx conversion efficiency of the downstream SCR unit are used to evaluate quality of DEF. In some embodiments, the NOx conversion efficiency of close coupled SCR unit is used to evaluate quality of DEF. Operation of an EAS using the results of the evaluation of quality of DEF are described.
    Type: Grant
    Filed: August 25, 2020
    Date of Patent: November 15, 2022
    Assignee: PACCAR INC
    Inventors: Charles Wayne Reinhardt Swart, Cynthia Chaffin Webb, Maarten Meijer, Varun Ramesh