Patents by Inventor Venkata Dandibhotla

Venkata Dandibhotla 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: 20210134075
    Abstract: A computer implemented preventative maintenance schedule can includes a plurality of predetermined maintenance intervals. A replaceable maintenance item may be initially assigned to an initially assigned maintenance interval. A performance data associated with the replaceable maintenance item may be measured and an estimated end of useful life may be determined based on the performance data. The estimated end of useful life is compared to the assigned maintenance interval and, if warranted, the assigned maintenance schedule is modified.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 6, 2021
    Applicant: Caterpillar Inc.
    Inventors: Richard A. Carpenter, Kyle B. Walton, John J. Krone, Venkata Dandibhotla, Yanchai Zhang
  • Publication number: 20200378283
    Abstract: A fluid degradation monitoring system may detect a replacement of a fluid of a machine. The fluid degradation monitoring system may determine, after detecting the replacement of the fluid, a first degradation estimate of the fluid using a first technique based on characteristics relating to an operation of the machine. The fluid degradation monitoring system may detect a transition in a value of a dielectric constant of the fluid from a first phase to a second phase. The fluid degradation monitoring system may determine, after detecting the transition in the value of the dielectric constant, a second degradation estimate of the fluid using a second technique based on characteristics relating to the fluid.
    Type: Application
    Filed: June 3, 2019
    Publication date: December 3, 2020
    Applicant: Caterpillar Inc.
    Inventors: Yanchai ZHANG, Kyle WALTON, Richard CARPENTER, Venkata DANDIBHOTLA, Baoyang DENG
  • Patent number: 10563649
    Abstract: A hydraulic fracturing system includes an engine, transmission, and hydraulic fracturing pump. A driveshaft is coupled between the transmission and the hydraulic fracturing pump to transfer torque from the engine to the hydraulic fracturing pump. The hydraulic fracturing system also includes an advisory system including a display, a memory storing fuel consumption data and component durability data, and a controller. The controller is programmed to receive pump flow and pressure settings, identify an optimal transmission gear based on the pump flow and pressure settings, the fuel consumption data and the component durability data, and cause the optimal transmission gear to be displayed on the display.
    Type: Grant
    Filed: April 6, 2017
    Date of Patent: February 18, 2020
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Venkata Dandibhotla, Maurice Dust
  • Patent number: 10473008
    Abstract: A system and method for activating on a user interface an indicator of a condition of a lubricant in a machine module. The system may comprise a controller and a user interface. The controller may be configured to, for each of a first time window and a second time window: receive a plurality of lubricant characteristics and measured lubricant temperatures, calculate an adjusted lubricant characteristic, and determine a slope based on the plurality of adjusted lubricant characteristics. The controller may further determine a change in slope, and generate a signal to activate the indicator on the user interface based on the change in slope, wherein, if the change in slope exceeds a threshold, the indicator is a lubricant changed indicator.
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: November 12, 2019
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Venkata Dandibhotla, Kyle Brent Walton, John J. Krone
  • Patent number: 10385841
    Abstract: A pump monitoring and notification system for a hydraulic pump includes a transmission speed sensor and a controller. The transmission speed sensor is associated with a transmission connected to the pump to determine an output speed of the transmission. The controller is configured to access a transmission threshold, access a time threshold, and determine a rotational speed of the transmission based upon the transmission speed sensor. The controller is further configured to determine a variation in rotational speed of the transmission based upon the rotational speed, compare the variation in rotational speed of the transmission to the transmission threshold, and generate an alert signal when the variation in rotational speed of the transmission exceeds the transmission threshold for a time period exceeding the time threshold.
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: August 20, 2019
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Vijay Janardhan, Jason Weber, Venkata Dandibhotla
  • Publication number: 20190195097
    Abstract: A system and method for activating on a user interface an indicator of a condition of a lubricant in a machine module. The system may comprise a controller and a user interface. The controller may be configured to, for each of a first time window and a second time window: receive a plurality of lubricant characteristics and measured lubricant temperatures, calculate an adjusted lubricant characteristic, and determine a slope based on the plurality of adjusted lubricant characteristics. The controller may further determine a change in slope, and generate a signal to activate the indicator on the user interface based on the change in slope, wherein, if the change in slope exceeds a threshold, the indicator is a lubricant changed indicator.
    Type: Application
    Filed: December 22, 2017
    Publication date: June 27, 2019
    Applicant: Caterpillar Inc.
    Inventors: Yanchai Zhang, Venkata Dandibhotla, Kyle Brent Walton, John J. Krone
  • Publication number: 20180291712
    Abstract: A hydraulic fracturing system includes an engine, transmission, and hydraulic fracturing pump. A driveshaft is coupled between the transmission and the hydraulic fracturing pump to transfer torque from the engine to the hydraulic fracturing pump. The hydraulic fracturing system also includes an advisory system including a display, a memory storing fuel consumption data and component durability data, and a controller. The controller is programmed to receive pump flow and pressure settings, identify an optimal transmission gear based on the pump flow and pressure settings, the fuel consumption data and the component durability data, and cause the optimal transmission gear to be displayed on the display.
    Type: Application
    Filed: April 6, 2017
    Publication date: October 11, 2018
    Inventors: Yanchai Zhang, Venkata Dandibhotla, Maurice Dust
  • Publication number: 20180223831
    Abstract: A pump monitoring and notification system for a hydraulic pump includes a transmission speed sensor and a controller. The transmission speed sensor is associated with a transmission connected to the pump to determine an output speed of the transmission. The controller is configured to access a transmission threshold, access a time threshold, and determine a rotational speed of the transmission based upon the transmission speed sensor. The controller is further configured to determine a variation in rotational speed of the transmission based upon the rotational speed, compare the variation in rotational speed of the transmission to the transmission threshold, and generate an alert signal when the variation in rotational speed of the transmission exceeds the transmission threshold for a time period exceeding the time threshold.
    Type: Application
    Filed: February 9, 2017
    Publication date: August 9, 2018
    Applicant: Caterpillar Inc.
    Inventors: Yanchai Zhang, Vijay Janardhan, Jason Weber, Venkata Dandibhotla
  • Patent number: 9945375
    Abstract: A method for automatic tuning of a reference model for a fracking rig pump is provided. The method includes determining, at a processor connected to a fracking rig pump, a current choke area associated with the fracking rig pump based upon at least a maximum power and a maximum pressure obtained from the fracking rig pump for a pump speed of the fracking rig pump, obtaining a pump power and a pump pressure for the current choke area based upon at least a reference model for the fracking rig pump stored in a memory device coupled to the processor, determining a pressure difference between the maximum pressure obtained from the fracking rig pump and the pump pressure, determining a power difference between the maximum power obtained from the fracking rig pump and the pump power obtained from the reference model, and providing an updated choke area to the reference model.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: April 17, 2018
    Assignee: Caterpillar Inc.
    Inventors: Yanchai Zhang, Zhijun Cai, Venkata Dandibhotla, Evan Jacobson, Koti Padarthy
  • Publication number: 20170204712
    Abstract: A method for automatic tuning of a reference model for a fracking rig pump is provided. The method includes determining, at a processor connected to a fracking rig pump, a current choke area associated with the fracking rig pump based upon at least a maximum power and a maximum pressure obtained from the fracking rig pump for a pump speed of the fracking rig pump, obtaining a pump power and a pump pressure for the current choke area based upon at least a reference model for the fracking rig pump stored in a memory device coupled to the processor, determining a pressure difference between the maximum pressure obtained from the fracking rig pump and the pump pressure, determining a power difference between the maximum power obtained from the fracking rig pump and the pump power obtained from the reference model, and providing an updated choke area to the reference model.
    Type: Application
    Filed: January 20, 2016
    Publication date: July 20, 2017
    Applicant: Caterpillar Inc.
    Inventors: Yanchai Zhang, Zhijun Cai, Venkata Dandibhotla, Evan Jacobson, Koti Padarthy