Patents by Inventor Allen B. Chu

Allen B. Chu 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).

  • EXHAUST AFTER-TREATMENT SYSTEM
    Publication number: 20140140892
    Abstract: An exhaust after-treatment system for heating a sensor system attached to a diesel particulate filter for determining the condition of the diesel particulate filter is provided. The exhaust after-treatment system includes a diesel particulate filter, a sensor system, and a heating mechanism. The sensor system is configured to monitor pressure at an input end and an output end of the diesel particulate filter. The heating mechanism is in thermal contact with the sensor system. The heating mechanism is disposed downstream of an engine cooling system and enables a flow of engine coolant around the sensor system, preventing condensation and freezing of the sensor system.
    Type: Application
    Filed: January 27, 2014
    Publication date: May 22, 2014
    Applicant: Caterpillar Inc.
    Inventors: Jason W. Hudgens, Allen B. Chu