The abnormal combustion affected by lubricating oil ignition in premixed gas engine

Shinji Yasueda, Koji Takasaki, Hiroshi Tajima

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

The thermal efficiency of gas engines have been improved considerably in the last decade and now some of gas engines has achieved higher efficiency than diesel engines by introducing the state of the arts technologies. But at the same time, the abnormal combustion with the high peak firing pressure has been seen in recent years especially on high BMEP engines. This combustion has the unique characteristics such that it occurs temporally with the limited crank angle of advanced timing and the retarded spark ignition timing makes it worse. As the results of researches including the visualization tests on the single cylinder engine, this combustion was confirmed to be the kind of pre-ignition caused by the auto ignition of in-cylinder lubricating oil. And it was found to be one of the causes of the cyclic variation of peak firing pressure on premixed combustion gas engine. The lubricating oil can be ignited in the cylinder near the end of compression stroke where the temperature in cylinder is high enough for fuel oil to ignite. This is a natural phenomenon because the auto ignition temperature of lubricating oil is same level as that of fuel oil. But this phenomenon has not been considered so deeply so far because it has not caused serious combustion problems. But from now, more careful design by adding the view of the abnormal combustion caused by lubricating oil will be required for the future engines having the higher BEMP and thermal efficiency. Especially in case of gas engine ignited by fuel oil, such as Micro Pilot and Dual Fuel engine, the stable combustion window where combustion can be initiated and controlled not by lubricating oil but by fuel oil will become narrow. In this paper, the characteristics of this abnormal combustion on production engines and the visualization data of combustions measured on a test engine are introduced and then the consideration about the mechanism and the analysis of this phenomenon are described in detail.

Original languageEnglish
Title of host publicationASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012
Pages29-36
Number of pages8
DOIs
Publication statusPublished - Dec 1 2012
EventASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012 - Torino, Piemonte, Italy
Duration: May 6 2012May 9 2012

Publication series

NameProceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division
ISSN (Print)1529-6598

Other

OtherASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012
CountryItaly
CityTorino, Piemonte
Period5/6/125/9/12

Fingerprint

Gas engines
Lubricating oils
Ignition
Fuel oils
Engine cylinders
Engines
Dual fuel engines
Data visualization
Electric sparks
Diesel engines
Visualization
Temperature

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Yasueda, S., Takasaki, K., & Tajima, H. (2012). The abnormal combustion affected by lubricating oil ignition in premixed gas engine. In ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012 (pp. 29-36). (Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division). https://doi.org/10.1115/ICES2012-81042

The abnormal combustion affected by lubricating oil ignition in premixed gas engine. / Yasueda, Shinji; Takasaki, Koji; Tajima, Hiroshi.

ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012. 2012. p. 29-36 (Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Yasueda, S, Takasaki, K & Tajima, H 2012, The abnormal combustion affected by lubricating oil ignition in premixed gas engine. in ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012. Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division, pp. 29-36, ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012, Torino, Piemonte, Italy, 5/6/12. https://doi.org/10.1115/ICES2012-81042
Yasueda S, Takasaki K, Tajima H. The abnormal combustion affected by lubricating oil ignition in premixed gas engine. In ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012. 2012. p. 29-36. (Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division). https://doi.org/10.1115/ICES2012-81042
Yasueda, Shinji ; Takasaki, Koji ; Tajima, Hiroshi. / The abnormal combustion affected by lubricating oil ignition in premixed gas engine. ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012. 2012. pp. 29-36 (Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division).
@inproceedings{1438ede24a2e4ea0990172b5cfffcba8,
title = "The abnormal combustion affected by lubricating oil ignition in premixed gas engine",
abstract = "The thermal efficiency of gas engines have been improved considerably in the last decade and now some of gas engines has achieved higher efficiency than diesel engines by introducing the state of the arts technologies. But at the same time, the abnormal combustion with the high peak firing pressure has been seen in recent years especially on high BMEP engines. This combustion has the unique characteristics such that it occurs temporally with the limited crank angle of advanced timing and the retarded spark ignition timing makes it worse. As the results of researches including the visualization tests on the single cylinder engine, this combustion was confirmed to be the kind of pre-ignition caused by the auto ignition of in-cylinder lubricating oil. And it was found to be one of the causes of the cyclic variation of peak firing pressure on premixed combustion gas engine. The lubricating oil can be ignited in the cylinder near the end of compression stroke where the temperature in cylinder is high enough for fuel oil to ignite. This is a natural phenomenon because the auto ignition temperature of lubricating oil is same level as that of fuel oil. But this phenomenon has not been considered so deeply so far because it has not caused serious combustion problems. But from now, more careful design by adding the view of the abnormal combustion caused by lubricating oil will be required for the future engines having the higher BEMP and thermal efficiency. Especially in case of gas engine ignited by fuel oil, such as Micro Pilot and Dual Fuel engine, the stable combustion window where combustion can be initiated and controlled not by lubricating oil but by fuel oil will become narrow. In this paper, the characteristics of this abnormal combustion on production engines and the visualization data of combustions measured on a test engine are introduced and then the consideration about the mechanism and the analysis of this phenomenon are described in detail.",
author = "Shinji Yasueda and Koji Takasaki and Hiroshi Tajima",
year = "2012",
month = "12",
day = "1",
doi = "10.1115/ICES2012-81042",
language = "English",
isbn = "9780791844663",
series = "Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division",
pages = "29--36",
booktitle = "ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012",

}

TY - GEN

T1 - The abnormal combustion affected by lubricating oil ignition in premixed gas engine

AU - Yasueda, Shinji

AU - Takasaki, Koji

AU - Tajima, Hiroshi

PY - 2012/12/1

Y1 - 2012/12/1

N2 - The thermal efficiency of gas engines have been improved considerably in the last decade and now some of gas engines has achieved higher efficiency than diesel engines by introducing the state of the arts technologies. But at the same time, the abnormal combustion with the high peak firing pressure has been seen in recent years especially on high BMEP engines. This combustion has the unique characteristics such that it occurs temporally with the limited crank angle of advanced timing and the retarded spark ignition timing makes it worse. As the results of researches including the visualization tests on the single cylinder engine, this combustion was confirmed to be the kind of pre-ignition caused by the auto ignition of in-cylinder lubricating oil. And it was found to be one of the causes of the cyclic variation of peak firing pressure on premixed combustion gas engine. The lubricating oil can be ignited in the cylinder near the end of compression stroke where the temperature in cylinder is high enough for fuel oil to ignite. This is a natural phenomenon because the auto ignition temperature of lubricating oil is same level as that of fuel oil. But this phenomenon has not been considered so deeply so far because it has not caused serious combustion problems. But from now, more careful design by adding the view of the abnormal combustion caused by lubricating oil will be required for the future engines having the higher BEMP and thermal efficiency. Especially in case of gas engine ignited by fuel oil, such as Micro Pilot and Dual Fuel engine, the stable combustion window where combustion can be initiated and controlled not by lubricating oil but by fuel oil will become narrow. In this paper, the characteristics of this abnormal combustion on production engines and the visualization data of combustions measured on a test engine are introduced and then the consideration about the mechanism and the analysis of this phenomenon are described in detail.

AB - The thermal efficiency of gas engines have been improved considerably in the last decade and now some of gas engines has achieved higher efficiency than diesel engines by introducing the state of the arts technologies. But at the same time, the abnormal combustion with the high peak firing pressure has been seen in recent years especially on high BMEP engines. This combustion has the unique characteristics such that it occurs temporally with the limited crank angle of advanced timing and the retarded spark ignition timing makes it worse. As the results of researches including the visualization tests on the single cylinder engine, this combustion was confirmed to be the kind of pre-ignition caused by the auto ignition of in-cylinder lubricating oil. And it was found to be one of the causes of the cyclic variation of peak firing pressure on premixed combustion gas engine. The lubricating oil can be ignited in the cylinder near the end of compression stroke where the temperature in cylinder is high enough for fuel oil to ignite. This is a natural phenomenon because the auto ignition temperature of lubricating oil is same level as that of fuel oil. But this phenomenon has not been considered so deeply so far because it has not caused serious combustion problems. But from now, more careful design by adding the view of the abnormal combustion caused by lubricating oil will be required for the future engines having the higher BEMP and thermal efficiency. Especially in case of gas engine ignited by fuel oil, such as Micro Pilot and Dual Fuel engine, the stable combustion window where combustion can be initiated and controlled not by lubricating oil but by fuel oil will become narrow. In this paper, the characteristics of this abnormal combustion on production engines and the visualization data of combustions measured on a test engine are introduced and then the consideration about the mechanism and the analysis of this phenomenon are described in detail.

UR - http://www.scopus.com/inward/record.url?scp=84882690042&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84882690042&partnerID=8YFLogxK

U2 - 10.1115/ICES2012-81042

DO - 10.1115/ICES2012-81042

M3 - Conference contribution

AN - SCOPUS:84882690042

SN - 9780791844663

T3 - Proceedings of the Spring Technical Conference of the ASME Internal Combustion Engine Division

SP - 29

EP - 36

BT - ASME 2012 Internal Combustion Engine Division Spring Technical Conference, ICES 2012

ER -