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Improvement of diesel engine startability under low temperatures by vortex tubes
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| Veröffentlicht in: | Energy reports 6(2020) vom: Nov., Seite 17-27 |
|---|---|
| Personen und Körperschaften: | , , |
| Titel: | Improvement of diesel engine startability under low temperatures by vortex tubes/ Adem Celik, Mehmet Yilmaz, Omer Faruk Yildiz |
| Format: | E-Book-Kapitel |
| Sprache: | Englisch |
| veröffentlicht: |
2020
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| Gesamtaufnahme: |
: Energy reports, 6(2020) vom: Nov., Seite 17-27
, volume:6 |
| Schlagwörter: | |
| Quelle: | Verbunddaten SWB Lizenzfreie Online-Ressourcen |
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| 520 | |a Cold start is one of the most problematic combustion phases for diesel engines. During this phase, a large proportion of pollutants are produced within the cylinder due to misfiring and incomplete combustion due to the low engine temperatures. Furthermore, exhaust after-treatment devices work inefficiently since their minimum operation temperatures cannot be reached. In addition to this, at temperatures below 0 °C the possibility of continuous misfiring could actually impede the engine start. Ambient temperature is one of the most important factors affecting the diesel engine cold startability. The aim of this study is to improve diesel engine startability under low temperatures by vortex tubes. A vortex tube was used to increase the intake air temperature in a six cylinders, four stroke and direct injection diesel engine of a truck. The hot air obtained from the hot outlet of the vortex tube was mixed with the air coming from the inlet of the intake manifold and the warmer air was sent to the cylinders. The compressed air required for the operation of the vortex tube was provided from the air tank of the compressed-air brake system of the truck. The effects of variation in ambient temperature on the engine cranking speed and in-cylinder pressure were analyzed and presented. Experiments were conducted for ambient air temperatures of -5, 0 and +4°C. It was found that the reduction in ambient temperature resulted in prolonged cranking periods along with the longer time taken to reach idling speed as well as increased combustion instability for the engine without vortex tube. The use of the vortex tube increased the intake air temperature, which decreased durations of engine starting-cranking, cranking-idling, and idling-stabling. These results indicate that the cold starting performance of the diesel engine could be improved by using vortex tubes. | ||
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| author | Celik, Adem, Yilmaz, Mehmet, Yildiz, Omer Faruk |
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| contents | Cold start is one of the most problematic combustion phases for diesel engines. During this phase, a large proportion of pollutants are produced within the cylinder due to misfiring and incomplete combustion due to the low engine temperatures. Furthermore, exhaust after-treatment devices work inefficiently since their minimum operation temperatures cannot be reached. In addition to this, at temperatures below 0 °C the possibility of continuous misfiring could actually impede the engine start. Ambient temperature is one of the most important factors affecting the diesel engine cold startability. The aim of this study is to improve diesel engine startability under low temperatures by vortex tubes. A vortex tube was used to increase the intake air temperature in a six cylinders, four stroke and direct injection diesel engine of a truck. The hot air obtained from the hot outlet of the vortex tube was mixed with the air coming from the inlet of the intake manifold and the warmer air was sent to the cylinders. The compressed air required for the operation of the vortex tube was provided from the air tank of the compressed-air brake system of the truck. The effects of variation in ambient temperature on the engine cranking speed and in-cylinder pressure were analyzed and presented. Experiments were conducted for ambient air temperatures of -5, 0 and +4°C. It was found that the reduction in ambient temperature resulted in prolonged cranking periods along with the longer time taken to reach idling speed as well as increased combustion instability for the engine without vortex tube. The use of the vortex tube increased the intake air temperature, which decreased durations of engine starting-cranking, cranking-idling, and idling-stabling. These results indicate that the cold starting performance of the diesel engine could be improved by using vortex tubes. |
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| spelling | Celik, Adem VerfasserIn aut, Improvement of diesel engine startability under low temperatures by vortex tubes Adem Celik, Mehmet Yilmaz, Omer Faruk Yildiz, 2020, Text txt rdacontent, Computermedien c rdamedia, Online-Ressource cr rdacarrier, DE-206 Open Access Controlled Vocabulary for Access Rights http://purl.org/coar/access_right/c_abf2, Cold start is one of the most problematic combustion phases for diesel engines. During this phase, a large proportion of pollutants are produced within the cylinder due to misfiring and incomplete combustion due to the low engine temperatures. Furthermore, exhaust after-treatment devices work inefficiently since their minimum operation temperatures cannot be reached. In addition to this, at temperatures below 0 °C the possibility of continuous misfiring could actually impede the engine start. Ambient temperature is one of the most important factors affecting the diesel engine cold startability. The aim of this study is to improve diesel engine startability under low temperatures by vortex tubes. A vortex tube was used to increase the intake air temperature in a six cylinders, four stroke and direct injection diesel engine of a truck. The hot air obtained from the hot outlet of the vortex tube was mixed with the air coming from the inlet of the intake manifold and the warmer air was sent to the cylinders. The compressed air required for the operation of the vortex tube was provided from the air tank of the compressed-air brake system of the truck. The effects of variation in ambient temperature on the engine cranking speed and in-cylinder pressure were analyzed and presented. Experiments were conducted for ambient air temperatures of -5, 0 and +4°C. It was found that the reduction in ambient temperature resulted in prolonged cranking periods along with the longer time taken to reach idling speed as well as increased combustion instability for the engine without vortex tube. The use of the vortex tube increased the intake air temperature, which decreased durations of engine starting-cranking, cranking-idling, and idling-stabling. These results indicate that the cold starting performance of the diesel engine could be improved by using vortex tubes., DE-206 Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International CC BY-NC-ND 4.0 cc https://creativecommons.org/licenses/by-nc-nd/4.0/, Aufsatz in Zeitschrift DE-206, Yilmaz, Mehmet VerfasserIn (DE-588)1207499307 (DE-627)1693838648 aut, Yildiz, Omer Faruk VerfasserIn (DE-588)1207499366 (DE-627)1693838729 aut, Enthalten in Energy reports Amsterdam [u.a.] : Elsevier, 2015 6(2020) vom: Nov., Seite 17-27 Online-Ressource (DE-627)820689033 (DE-600)2814795-9 (DE-576)427950821 2352-4847 nnns, volume:6 year:2020 month:11 pages:17-27, https://www.sciencedirect.com/science/article/pii/S2352484719301684/pdfft?md5=8fe3a21a679ebd064d6d65b9f11c23d1&pid=1-s2.0-S2352484719301684-main.pdf Verlag kostenfrei, https://doi.org/10.1016/j.egyr.2019.11.027 Resolving-System kostenfrei, http://hdl.handle.net/10419/244012 Resolving-System kostenfrei, https://doi.org/10.1016/j.egyr.2019.11.027 LFER, https://www.sciencedirect.com/science/article/pii/S2352484719301684/pdfft?md5=8fe3a21a679ebd064d6d65b9f11c23d1&pid=1-s2.0-S2352484719301684-main.pdf LFER, LFER 2020-04-07T00:00:00Z |
| spellingShingle | Celik, Adem, Yilmaz, Mehmet, Yildiz, Omer Faruk, Improvement of diesel engine startability under low temperatures by vortex tubes, Cold start is one of the most problematic combustion phases for diesel engines. During this phase, a large proportion of pollutants are produced within the cylinder due to misfiring and incomplete combustion due to the low engine temperatures. Furthermore, exhaust after-treatment devices work inefficiently since their minimum operation temperatures cannot be reached. In addition to this, at temperatures below 0 °C the possibility of continuous misfiring could actually impede the engine start. Ambient temperature is one of the most important factors affecting the diesel engine cold startability. The aim of this study is to improve diesel engine startability under low temperatures by vortex tubes. A vortex tube was used to increase the intake air temperature in a six cylinders, four stroke and direct injection diesel engine of a truck. The hot air obtained from the hot outlet of the vortex tube was mixed with the air coming from the inlet of the intake manifold and the warmer air was sent to the cylinders. The compressed air required for the operation of the vortex tube was provided from the air tank of the compressed-air brake system of the truck. The effects of variation in ambient temperature on the engine cranking speed and in-cylinder pressure were analyzed and presented. Experiments were conducted for ambient air temperatures of -5, 0 and +4°C. It was found that the reduction in ambient temperature resulted in prolonged cranking periods along with the longer time taken to reach idling speed as well as increased combustion instability for the engine without vortex tube. The use of the vortex tube increased the intake air temperature, which decreased durations of engine starting-cranking, cranking-idling, and idling-stabling. These results indicate that the cold starting performance of the diesel engine could be improved by using vortex tubes., Aufsatz in Zeitschrift |
| title | Improvement of diesel engine startability under low temperatures by vortex tubes |
| title_auth | Improvement of diesel engine startability under low temperatures by vortex tubes |
| title_full | Improvement of diesel engine startability under low temperatures by vortex tubes Adem Celik, Mehmet Yilmaz, Omer Faruk Yildiz |
| title_fullStr | Improvement of diesel engine startability under low temperatures by vortex tubes Adem Celik, Mehmet Yilmaz, Omer Faruk Yildiz |
| title_full_unstemmed | Improvement of diesel engine startability under low temperatures by vortex tubes Adem Celik, Mehmet Yilmaz, Omer Faruk Yildiz |
| title_in_hierarchy | Improvement of diesel engine startability under low temperatures by vortex tubes / Adem Celik, Mehmet Yilmaz, Omer Faruk Yildiz, |
| title_short | Improvement of diesel engine startability under low temperatures by vortex tubes |
| title_sort | improvement of diesel engine startability under low temperatures by vortex tubes |
| topic | Aufsatz in Zeitschrift |
| topic_facet | Aufsatz in Zeitschrift |
| url | https://www.sciencedirect.com/science/article/pii/S2352484719301684/pdfft?md5=8fe3a21a679ebd064d6d65b9f11c23d1&pid=1-s2.0-S2352484719301684-main.pdf, https://doi.org/10.1016/j.egyr.2019.11.027, http://hdl.handle.net/10419/244012 |