Patents by Inventor Srinivasa V. Rajagopalan

Srinivasa V. Rajagopalan 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).

  • Pump purge for urea dosing system
    Patent number: 9689291
    Abstract: According to one embodiment, a diesel exhaust fluid purging system includes a metering valve with a supply port and a delivery port. The purging system also includes a pump assembly that is fluidly connected to the supply port of the metering valve. The pump assembly includes a pump and a single supply line that is fluidly connectable with a diesel exhaust fluid source. The purging system further includes an injection assembly that is fluidly connected to the delivery port of the metering valve. The injection assembly includes an air supply line that is fluidly connectable with an air supply source. Additionally, the purging system includes a controller in electrical communication with the metering valve, the pump assembly, and the injection assembly. The controller is configured to purge the pump assembly of residual diesel exhaust fluid using air from the air supply line.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: June 27, 2017
    Assignee: Cummins IP, Inc.
    Inventors: Shu Zhang, Srivardhan Chandrapati, Mugdha Naik, Srinivasa V. Rajagopalan, Wei Huang, George Muntean, Andrew Myer
  • PUMP PURGE FOR UREA DOSING SYSTEM
    Publication number: 20160040575
    Abstract: According to one embodiment, a diesel exhaust fluid purging system includes a metering valve with a supply port and a delivery port. The purging system also includes a pump assembly that is fluidly connected to the supply port of the metering valve. The pump assembly includes a pump and a single supply line that is fluidly connectable with a diesel exhaust fluid source. The purging system further includes an injection assembly that is fluidly connected to the delivery port of the metering valve. The injection assembly includes an air supply line that is fluidly connectable with an air supply source. Additionally, the purging system includes a controller in electrical communication with the metering valve, the pump assembly, and the injection assembly. The controller is configured to purge the pump assembly of residual diesel exhaust fluid using air from the air supply line.
    Type: Application
    Filed: March 14, 2014
    Publication date: February 11, 2016
    Applicant: Cummins IP, Inc.
    Inventors: Shu ZHANG, Srivardhan Chandrapati, Mugdha Naik, Srinivasa V. Rajagopalan, Wei Huang, George Muntean, Andrew Myer