Utilizing Dynamic Fuel Pressure Sensor For Detecting Bearing Spalling and Gear Pump Failure Modes in Cummins Pressure Time (PT) Pumps
##plugins.themes.bootstrap3.article.main##
##plugins.themes.bootstrap3.article.sidebar##
Abstract
The objective of this paper is to highlight the results of the fault detection investigation conducted to ascertain the feasibility of exploiting the existing on-board M2/M3 Bradley fuel pressure sensor for the purpose of detecting mechanical bearing spalling and gear pump failure modes of the pressure-time (PT) fuel pump used on the Cummins VTA-903T engine. To investigate this fluid-mechanical cross domain detection approach, a Bradley fuel system test bed was built. Fault tests for four PT pump failure modes were conducted including bearing faults, gear pump fault, idle adjust miscalibration, and air-fuel control fault. The results of the first two fault tests are summarized in this paper. Due to limited number of pumps available for testing (2), these preliminary findings are not statistically substantiated. With this stated, the findings present a method for investigating the presence of a narrowband frequency-domain-based predictive fault detection capability using the existing pressure sensor installed on the Chassis Modernization and Embedded Diagnostics (CMED) variant Bradley. The test stand based seeded fault analysis was not capable of detecting an 0.080 inch outer raceway bearing spall, but there is preliminary evidence to warrant further study that a nominal 0.001 inch foreign object debris accumulation on the gear teeth of the gear pump might be detectable using a simple kurtosis based calculation using a pressure sensor with a 0-500 Hz dynamic bandwidth.
How to Cite
##plugins.themes.bootstrap3.article.details##
gear failure, Frequency Analysis, bearing fault detection, Predictive Health Monitoring, Cross domain, fluid-mechanical, embedded diagnostic, Fuel system, pump
Cummins Component Shop Manual for Cummins PT Fuel Pump Rebuilding and Calibration Instructions (1980) Bulletin No. 3379084-02
Cummins Fuel Pump PT (type G) Calibration Values Bulletin No. 3379352-10
DTSFE (2011) Electrolytic corrosion http://www.dtsfe.com/faq/pdf/electolytic%20corrosion.p df
Hines, J.H., Bennett, L., Ligetti, C., Banks, J.C., Nestler, S. (2009) Cost-Benefit Analysis Trade-Space Tool as a Design-Aid for the U.S. Army Vehicle Health Management System (VHMS) Program, Prognostics and Health Management (PHM) Society 2009 Conference, September 27-October 1, San Diego, CA.
Technical Manual 9-2350-294-20-1-1/3 (2006), Technical manual unit maintenance manual Fighting Vehicle, Infantry, M2A2 2350-01-248-7619, Department of the Army, December 1, 2006
White, D.G. (1995) Introduction to Machine Vibration: Bainbridge Island, WA, DLI Engineering Corp.: Part number 8569, version 1.76 (p. 110)
The Prognostic and Health Management Society advocates open-access to scientific data and uses a Creative Commons license for publishing and distributing any papers. A Creative Commons license does not relinquish the author’s copyright; rather it allows them to share some of their rights with any member of the public under certain conditions whilst enjoying full legal protection. By submitting an article to the International Conference of the Prognostics and Health Management Society, the authors agree to be bound by the associated terms and conditions including the following:
As the author, you retain the copyright to your Work. By submitting your Work, you are granting anybody the right to copy, distribute and transmit your Work and to adapt your Work with proper attribution under the terms of the Creative Commons Attribution 3.0 United States license. You assign rights to the Prognostics and Health Management Society to publish and disseminate your Work through electronic and print media if it is accepted for publication. A license note citing the Creative Commons Attribution 3.0 United States License as shown below needs to be placed in the footnote on the first page of the article.
First Author et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 3.0 United States License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.