Patents by Inventor Ashal J. Shah

Ashal J. Shah 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).

  • System and method of detecting an obstructed pressure line in a diesel exhaust fluid delivery system
    Patent number: 10570801
    Abstract: A method and system for detecting whether a pressure line in a diesel exhaust fluid (DEF) delivery system has an obstruction. The system includes an electronic control unit with an electronic processor that is configured to receive an unfiltered pressure signal from a pressure sensor; to electronically filter the unfiltered pressure signal to determine a dosing pressure signal; to determine an integrated value based on the dosing pressure signal; and to determine whether the pressure line is obstructed by comparing the integrated value with a predetermined threshold.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: February 25, 2020
    Assignee: Robert Bosch GmbH
    Inventors: Ashal J. Shah, Palanimuthu Thalamuthu, Oliver Wintersteller
  • SYSTEM AND METHOD OF DETECTING AN OBSTRUCTED PRESSURE LINE IN A DIESEL EXHAUST FLUID DELIVERY SYSTEM
    Publication number: 20170370269
    Abstract: A method and system for detecting whether a pressure line in a diesel exhaust fluid (DEF) delivery system has an obstruction. The system includes an electronic control unit with an electronic processor that is configured to receive an unfiltered pressure signal from a pressure sensor; to electronically filter the unfiltered pressure signal to determine a dosing pressure signal; to determine an integrated value based on the dosing pressure signal; and to determine whether the pressure line is obstructed by comparing the integrated value with a predetermined threshold.
    Type: Application
    Filed: June 21, 2017
    Publication date: December 28, 2017
    Inventors: Ashal J. Shah, Palanimuthu Thalamuthu, Oliver Wintersteller