2022 Fiscal Year Final Research Report
Fuel consumption improvement and exhaust gas cleaning by adding fine bubbles to light oil and heavy oil
| Project/Area Number |
20K05409
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Review Section |
Basic Section 31020:Earth resource engineering, Energy sciences-related
|
|---|
| Research Institution | Kurume National College of Technology |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2020-04-01 – 2023-03-31
|
| Keywords | ファインバブル / ディーゼル機関 / 燃料消費率 / 有害排気ガス / 燃焼解析 / 燃焼促進 / 微粒化 |
|---|
| Outline of Final Research Achievements |
Using A heavy oil and C heavy oil as fuel, the amounts of air which was mixed into fuel as fine bubbles (FB) were varied with fuel consumption to investigate experimentally the effects of void fraction on fuel consumption and exhaust gas. As a result, fuel consumption and smoke were reduced by 7.2% and 52% respectively at maximum for C heavy oil. It was also found that there were the optimum values for the amounts of air mixed into the fuel, and the greater amounts of air would cause the larger diameters of FB as well as smaller number of FB, which causes deterioration of improvement effect by FB.
It was also found that by mixing FB into fuel, injection timing was delayed due to compression and fusion of FB during fuel injection, however, fuel consumption was decreased by shortening of combustion time.
|
| Free Research Field |
燃焼工学
|
| Academic Significance and Societal Importance of the Research Achievements |
本研究で開発された技術は，燃焼機器の改造が不要で，装置構成が単純なため，既存の燃焼機器に容易にアドオン可能である．しかも，きわめて小動力で稼働するため費用対効果が大きいことが特徴である．
現在、運転中のディーゼル機関やガスタービン機関に搭載し，燃費改善と排ガスクリーン化を行う．また，現在運航中の船舶においては，定期点検の際に容易に装備可能な装置となる．さらに，燃焼の前処理を行う燃料改質装置となるため，他の省エネ装置や排ガス清浄装置との併用も可能であるなど，低炭素化を目指す液体燃料の燃焼機器に必要不可欠な技術となる．
|
