| 000 -LEADER |
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| fixed length control field |
02881nab a22001577a 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20230118170938.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
230118b ||||| |||| 00| 0 eng d |
| 100 1# - MAIN ENTRY--PERSONAL NAME |
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| Preferred name for the person |
Reyes, Joseph Gerard T. |
| Relator term |
author |
| 245 12 - TITLE STATEMENT |
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| Title |
A method of determination of the start and end of combustion in a direct injection diesel engine using the net heat release rate |
| 264 #4 - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) |
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| Date of publication, distribution, etc |
2017 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc |
Biodiesels have been reported to produce higher amounts of NOx and other regulated emissions as opposed to<br/>neat diesel. The use of biofuels in the Philippines is mandated by Republic Act 9467. Concurrently, RA 8749 regulates, among<br/>other sources, emissions of compression ignition engines. This necessitates further analysis on the use of biodiesel blends in<br/>conventional diesel engines in order to check conformance with both laws. With the country recently acquiring a sophisticated<br/>engine test facility, users need to be given procedures in order to facilitate their investigations. Studies suggest that the amount of<br/>biodiesel emissions are related to ignition delay and combustion duration of diesel engines due to engine system response to the<br/>properties of biodiesels. Ignition delay is the duration in crank angle from the start of injection (SOI) of fuel into the engine<br/>cylinder until the start of combustion (SOC) of the fuel-air mixture. The combustion duration is the duration in crank angle<br/>bounded SOC and end of combustion (EOC). For compression-ignition engines, such as diesel engines, several approaches were<br/>developed and utilized in order to pinpoint the crank angle for the SOI, SOC and EOC. Some of these approaches required the use<br/>of specialized and dedicated equipment that would be found only in facilities that could afford to acquire them. Other methods<br/>estimated SOC using maximum of the 2nd or 3rd order derivatives of recorded in-cylinder pressures. These pressure data may<br/>also be utilized together with the corresponding cylinder volumes to generate the net heat release rate (NHRR), which shows the<br/>trend of heat transfer to the gases enclosed in the engine cylinder. The start of combustion is then determined at the point where<br/>the value of the NHRR is minimum and followed by a rapid increase in value, whereas the EOC is at the crank angle where the<br/>NHRR becomes zero prior to the exhaust stroke of the engine. In this study, a method of determining SOI, SOC and EOC was<br/>developed using injection line and in-cylinder pressures data recorded from tests of a common rail direct injection diesel engine.<br/>This proposed method was then matched against two distinct test criteria for SOC to test its feasibility and results have shown<br/>conformance to the two criteria. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name as entry element |
Biodiesel fuels |
| 700 1# - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Quiros, Edwin N. |
| Relator term |
author |
| 773 ## - HOST ITEM ENTRY |
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| Title |
Philippine Engineering Journal |
| Relationship information |
vol. 38, no. 2: (December 2017), pages 99-111 |
| 942 ## - ADDED ENTRY ELEMENTS |
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| Source of classification or shelving scheme |
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| Item type |
JOURNAL ARTICLE |