Patents by Inventor David J. Langenderfer

David J. Langenderfer 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: 20240102815
    Abstract: A method of route planning for an electric vehicle includes obtaining waypoint data that indicates waypoint locations for the electric vehicle. The method also includes generating a map and a plurality of route segments to connect each of the waypoint locations on the map. Further, the method includes calculating an optimal route for the electric vehicle to visit each of the waypoint locations by evaluating the plurality of route segments. In response to detecting changes occurring in conditions associated with each of the plurality of route segments, the method includes recalculating the optimal route for the electric vehicle.
    Type: Application
    Filed: October 24, 2023
    Publication date: March 28, 2024
    Inventors: Vivek A. Sujan, David J. Langenderfer
  • Patent number: 11835351
    Abstract: A method of route planning for an electric vehicle includes obtaining waypoint data that indicates waypoint locations for the electric vehicle. The method also includes generating a map and a plurality of route segments to connect each of the waypoint locations on the map. Further, the method includes calculating an optimal route for the electric vehicle to visit each of the waypoint locations by evaluating the plurality of route segments. In response to detecting changes occurring in conditions associated with each of the plurality of route segments, the method includes recalculating the optimal route for the electric vehicle.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: December 5, 2023
    Assignee: CUMMINS INC.
    Inventors: Vivek A. Sujan, David J. Langenderfer
  • Patent number: 11802519
    Abstract: Systems and methods for bypassing a compromised engine cylinder via cylinder deactivation are described according to various embodiments herein. A system includes an engine coupled to a controller. The controller includes at least one processor and at least one memory coupled to the at least one processor. The at least one memory stores instructions that, when executed by the at least one processor, cause the controller to: determine that one or more cylinders of a plurality of cylinders of the engine is compromised based on data regarding operation of the engine; and cause the engine to operate in the modified engine operating mode whereby operation of the one or more cylinders that are compromised is modified.
    Type: Grant
    Filed: November 15, 2022
    Date of Patent: October 31, 2023
    Assignees: Cummins Inc., Tula Technology, Inc.
    Inventors: Aaron William Beinborn, J. Steven Kolhouse, David J. Langenderfer, David Schmidt
  • Patent number: 11691504
    Abstract: A prime mover system includes a first prime mover, a first drive shaft, a differential, a power take-off (PTO) drive shaft, a second drive shaft, a transmission, a first accessory, and an output shaft. The first drive shaft is operatively coupled to the first prime mover. The differential is coupled to the first drive shaft. The PTO drive shaft is coupled to the differential. The second drive shaft is coupled to the differential. The transmission is coupled to the second drive shaft. The first accessory is operatively coupled to the PTO drive shaft. The output shaft is coupled to the transmission. The transmission is configured to transfer rotation of the second drive shaft to the output shaft. Rotation of the PTO drive shaft is independent of rotation of the output shaft.
    Type: Grant
    Filed: February 5, 2020
    Date of Patent: July 4, 2023
    Assignee: Cummins Inc.
    Inventor: David J. Langenderfer
  • Publication number: 20210394612
    Abstract: A prime mover system includes a first prime mover, a first drive shaft, a differential, a power take-off (PTO) drive shaft, a second drive shaft, a transmission, a first accessory, and an output shaft. The first drive shaft is operatively coupled to the first prime mover. The differential is coupled to the first drive shaft. The PTO drive shaft is coupled to the differential. The second drive shaft is coupled to the differential. The transmission is coupled to the second drive shaft. The first accessory is operatively coupled to the PTO drive shaft. The output shaft is coupled to the transmission. The transmission is configured to transfer rotation of the second drive shaft to the output shaft. Rotation of the PTO drive shaft is independent of rotation of the output shaft.
    Type: Application
    Filed: February 5, 2020
    Publication date: December 23, 2021
    Applicant: CUMMINS INC.
    Inventor: David J. Langenderfer
  • Publication number: 20210394644
    Abstract: A system is provided for performing a predicted cooling operation for an electric vehicle (102) using a processor (122), and includes a vehicle monitoring unit (128) configured to monitor one or more vehicle characteristics related to the electric vehicle (102). The one or more vehicle characteristics include look-ahead demand information of one or more components of the electric vehicle (102). A cooling controller (126) is configured to communicate with the vehicle monitoring unit (128) and determine the look-ahead demand information based on at least one of: navigational information, thermal information, and environment information associated with the electric vehicle (102). The cooling controller (126) is configured to generate a cooling command based on the look-ahead demand information and perform the predicted cooling operation based on the cooling command by over-cooling the one or more components of the electric vehicle (102).
    Type: Application
    Filed: January 14, 2019
    Publication date: December 23, 2021
    Inventors: David J. Langenderfer, Bin L. Liu, Tony Qin
  • Patent number: 11008953
    Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary exhaust gas recirculation (EGR) cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the EGR fraction by deactivation of one or more of the cylinders.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: May 18, 2021
    Assignee: Cummins Inc.
    Inventors: Akash S. Desai, David J. Langenderfer
  • Publication number: 20210018324
    Abstract: A method of route planning for an electric vehicle includes obtaining waypoint data that indicates waypoint locations for the electric vehicle. The method also includes generating a map and a plurality of route segments to connect each of the waypoint locations on the map. Further, the method includes calculating an optimal route for the electric vehicle to visit each of the waypoint locations by evaluating the plurality of route segments. In response to detecting changes occurring in conditions associated with each of the plurality of route segments, the method includes recalculating the optimal route for the electric vehicle.
    Type: Application
    Filed: June 30, 2020
    Publication date: January 21, 2021
    Inventors: Vivek A. Sujan, David J. Langenderfer
  • Publication number: 20200256261
    Abstract: Systems, apparatus, and methods are disclosed that include a divided exhaust engine with at least one primary exhaust gas recirculation (EGR) cylinder and a plurality of non-primary EGR cylinders. The systems, apparatus and methods control the EGR fraction by deactivation of one or more of the cylinders.
    Type: Application
    Filed: December 10, 2019
    Publication date: August 13, 2020
    Inventors: Akash S. Desai, David J. Langenderfer