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Final Solution |
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The following procedure is a suggestion of methods for which to proceed with the experimental determination of data to be used with the specific heat monitoring method. 1. Assemble Test Equipment (Phase 1 and Phase 2) i. Phase I Setup · Create controlled environment for placing filter into soot-free heat stream. · Assemble test supports for filter. ii. Phase II Setup · Create a simulated diesel exhaust system with an actual engine. · Assemble test supports that allow filter to be placed in path of exhaust gases so that gases pass through filter channels and not over surface. 2. Assemble Temperature Monitoring Equipment i. The standard method of experimental temperature method, as indicated by Cummins is the usage of K-thermocouples. · Flow Energy Measurement: Thermocouples should be placed directly upstream and directly downstream of the test supports for the filter. · Temperature Response Measurement: Thermocouples should be placed in a grid setup around and inside the filter. 3. Prepare Mass Measurement Equipment i. Depending on the method used for filter soot content mass measurement, this equipment can be as simple a weight scale or as complicated as one of the methods previously mentioned. 4. Phase I Experimental Procedure i. Position thermocouples upstream and downstream of test supports. ii. Position thermocouples at specified locations on filter. iii. Place filter into test supports and secure it in place. iv. Activate thermocouples and computer data management program. v. Turn on heat flow source (heat gun or wind tunnel). vi. Record thermal response data of filter to incoming energy. vii. When enough data is obtained to make specific heat calculation turn off the heat flow and temperature monitors. 5. Phase II Experimental Procedure i. Position thermocouples upstream and downstream of test supports. ii. Position thermocouples at specified locations on filter. iii. Place filter into test supports and secure it in place. iv. Activate thermocouples and computer data management program. v. Turn on exhaust gases source (engine). vi. Record thermal response data of filter to incoming energy. vii. After set interval of time, turn off engine source and remove filter. viii. Measure amount of soot in filter. ix. Place filter back into test supports and secure it in place. x. Go back to Step 5 and repeat this cycle until filter is considered “full” (according to Cummins specifications). |
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The Temperature Measurement Method |
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Experimental Research Procedure |
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Cummins |
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Diesel Particulate Filter |