Bestor 2003a - Revision history

Scipediacontent at 10:41, 22 January 2021

2021-01-22T10:41:10Z

Scipediacontent: Scipediacontent moved page Draft Content 283293186 to Bestor 2003a

2020-10-26T12:46:30Z

Scipediacontent moved page Draft Content 283293186 to Bestor 2003a

Scipediacontent: Created page with " == Abstract == This report documents the first year's effort towards a 3-year program to develop micropilot ignition systems for existing pipeline compressor engines. In ess..."

2020-10-26T12:46:27Z

Created page with " == Abstract == This report documents the first year's effort towards a 3-year program to develop micropilot ignition systems for existing pipeline compressor engines. In ess..."

New page

== Abstract ==

This report documents the first year's effort towards a 3-year program to develop micropilot ignition systems for existing pipeline compressor engines. In essence, all Phase I goals and objectives were met. We intend to proceed with the Phase II research plan, as set forth by the applicable Research Management Plan. The objective for Phase I was to demonstrate the feasibility of micropilot ignition for large bore, slow speed engines operating at low compression ratios. The primary elements of Micropilot Phase I were to develop a single-cylinder test chamber to study the injection of pilot fuel into a combustion cylinder and to develop, install and test a multi-cylinder micropilot ignition system for a 4-cylinder, natural gas test engine. In all, there were twelve (12) tasks defined and executed to support these two (2) primarily elements in a stepwise fashion. Task-specific approaches and results are documented in this report. Research activities for Micropilot Phase I were conducted with the understanding that the efforts are expected to result in a commercial product to capture and disseminate the efficiency and environmental benefits of this new technology. An extensive state-of-art review was conducted to leverage the existing body of knowledge of micropilot ignition with respect to retrofit applications. Additionally, commercially-available fuel injection products were identified and applied to the program where appropriate. This approach will minimize the overall time-to-market requirements, while meeting performance and cost criteria. The four-cylinder prototype data was encouraging for the micro-pilot ignition technology when compared to spark ignition. Initial testing results showed: (1) Brake specific fuel consumption of natural gas was improved from standard spark ignition across the map, 1% at full load and 5% at 70% load. (2) 0% misfires for all points on micropilot ignition. Fuel savings were most likely due to this percent misfire improvement. (3) THC (Total Hydrocarbon) emissions were improved significantly at light load, 38% at 70% load. (4) VOC (Volatile Organic Compounds) emissions were improved above 80% load. (5) Coefficient of Variance for the IMEP (Indicated Mean Effective Pressure) was significantly less at lower loads, 76% less at 70%. These preliminary results will be substantiated and enhanced during Phase II of the Micropilot Ignition program.

Document type: Report

== Full document ==
<pdf>Media:Draft_Content_283293186-beopen447-3474-document.pdf</pdf>

== Original document ==

The different versions of the original document can be found in:

* [http://dx.doi.org/10.2172/823051 http://dx.doi.org/10.2172/823051]

* [http://pdfs.semanticscholar.org/3752/0535febe6250af298ff60dd723106053b4c5.pdf http://pdfs.semanticscholar.org/3752/0535febe6250af298ff60dd723106053b4c5.pdf]

* [https://core.ac.uk/display/71225655 https://core.ac.uk/display/71225655],[https://digital.library.unt.edu/ark:/67531/metadc783428/m2/1/high_res_d/823051.pdf https://digital.library.unt.edu/ark:/67531/metadc783428/m2/1/high_res_d/823051.pdf],[https://digital.library.unt.edu/ark:/67531/metadc783428 https://digital.library.unt.edu/ark:/67531/metadc783428],[http://www.osti.gov/scitech/servlets/purl/838719 http://www.osti.gov/scitech/servlets/purl/838719],[https://academic.microsoft.com/#/detail/1550776897 https://academic.microsoft.com/#/detail/1550776897]

@@ Line 3: / Line 3: @@
 This report documents the first year's effort towards a 3-year program to develop micropilot ignition systems for existing pipeline compressor engines. In essence, all Phase I goals and objectives were met. We intend to proceed with the Phase II research plan, as set forth by the applicable Research Management Plan. The objective for Phase I was to demonstrate the feasibility of micropilot ignition for large bore, slow speed engines operating at low compression ratios. The primary elements of Micropilot Phase I were to develop a single-cylinder test chamber to study the injection of pilot fuel into a combustion cylinder and to develop, install and test a multi-cylinder micropilot ignition system for a 4-cylinder, natural gas test engine. In all, there were twelve (12) tasks defined and executed to support these two (2) primarily elements in a stepwise fashion. Task-specific approaches and results are documented in this report. Research activities for Micropilot Phase I were conducted with the understanding that the efforts are expected to result in a commercial product to capture and disseminate the efficiency and environmental benefits of this new technology. An extensive state-of-art review was conducted to leverage the existing body of knowledge of micropilot ignition with respect to retrofit applications. Additionally, commercially-available fuel injection products were identified and applied to the program where appropriate. This approach will minimize the overall time-to-market requirements, while meeting performance and cost criteria. The four-cylinder prototype data was encouraging for the micro-pilot ignition technology when compared to spark ignition. Initial testing results showed: (1) Brake specific fuel consumption of natural gas was improved from standard spark ignition across the map, 1% at full load and 5% at 70% load. (2) 0% misfires for all points on micropilot ignition. Fuel savings were most likely due to this percent misfire improvement. (3) THC (Total Hydrocarbon) emissions were improved significantly at light load, 38% at 70% load. (4) VOC (Volatile Organic Compounds) emissions were improved above 80% load. (5) Coefficient of Variance for the IMEP (Indicated Mean Effective Pressure) was significantly less at lower loads, 76% less at 70%. These preliminary results will be substantiated and enhanced during Phase II of the Micropilot Ignition program.
@@ Line 18: / Line 13: @@
 * [http://pdfs.semanticscholar.org/3752/0535febe6250af298ff60dd723106053b4c5.pdf http://pdfs.semanticscholar.org/3752/0535febe6250af298ff60dd723106053b4c5.pdf]
-* [https://core.ac.uk/display/71225655 https://core.ac.uk/display/71225655],[https://digital.library.unt.edu/ark:/67531/metadc783428/m2/1/high_res_d/823051.pdf https://digital.library.unt.edu/ark:/67531/metadc783428/m2/1/high_res_d/823051.pdf],[https://digital.library.unt.edu/ark:/67531/metadc783428 https://digital.library.unt.edu/ark:/67531/metadc783428],[http://www.osti.gov/scitech/servlets/purl/838719 http://www.osti.gov/scitech/servlets/purl/838719],[https://academic.microsoft.com/#/detail/1550776897 https://academic.microsoft.com/#/detail/1550776897]
+* [https://digital.library.unt.edu/ark:/67531/metadc783428/m2/1/high_res_d/823051.pdf https://digital.library.unt.edu/ark:/67531/metadc783428/m2/1/high_res_d/823051.pdf],

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