Abstract
A new compressive combustion principle due to colliding pulsed supermulti-jets has been proposed by us, which is expected to achieve high thermal efficiency over 50% and less combustion noise. This paper reports some combustion experiments for a new prototype engine based on this breakthrough principle, which has twenty-four intake nozzles for supermulti-jets (Tri-octagon). First, after a rotary valve induces twenty-four intake jet flows simultaneously at a negative pressure condition generated during the early expansion process of a single piston, collision of jet flows at the center of combustion chamber occurs, which results in high local compression ratio at the center and also single-point auto-ignition. Combustion experiments for this prototype engine at lean burning condition reliably show higher combustion pressure than flame propagation on chamber wall.
| Original language | English |
|---|---|
| Title of host publication | 2018 Joint Propulsion Conference |
| Publisher | [publishername] American Institute of Aeronautics and Astronautics Inc, AIAA |
| ISBN (Print) | 9781624105708 |
| DOIs | |
| Publication status | Published - 2018 Jan 1 |
| Event | 54th AIAA/SAE/ASEE Joint Propulsion Conference, 2018 - Cincinnati, United States Duration: 2018 Jul 9 → 2018 Jul 11 |
Publication series
| Name | 2018 Joint Propulsion Conference |
|---|
Conference
| Conference | 54th AIAA/SAE/ASEE Joint Propulsion Conference, 2018 |
|---|---|
| Country | United States |
| City | Cincinnati |
| Period | 18/7/9 → 18/7/11 |
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ASJC Scopus subject areas
- Aerospace Engineering
- Control and Systems Engineering
Cite this
Fundamental combustion experiment of single-point auto-ignition engine with pulsed supermulti-jets, single piston and rotary valve. / Kobayashi, Yoshiki; Naitoh, Ken; Onuma, Yuichi; Ohara, Soichi; Arai, Daisuke; Machida, Yutaka; Isshiki, Yuuki; Ito, Hajime; Tada, Yusuke; Suzuki, Takahiro.
2018 Joint Propulsion Conference. [publishername] American Institute of Aeronautics and Astronautics Inc, AIAA, 2018. AIAA 2018-4629 (2018 Joint Propulsion Conference).Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Fundamental combustion experiment of single-point auto-ignition engine with pulsed supermulti-jets, single piston and rotary valve
AU - Kobayashi, Yoshiki
AU - Naitoh, Ken
AU - Onuma, Yuichi
AU - Ohara, Soichi
AU - Arai, Daisuke
AU - Machida, Yutaka
AU - Isshiki, Yuuki
AU - Ito, Hajime
AU - Tada, Yusuke
AU - Suzuki, Takahiro
PY - 2018/1/1
Y1 - 2018/1/1
N2 - A new compressive combustion principle due to colliding pulsed supermulti-jets has been proposed by us, which is expected to achieve high thermal efficiency over 50% and less combustion noise. This paper reports some combustion experiments for a new prototype engine based on this breakthrough principle, which has twenty-four intake nozzles for supermulti-jets (Tri-octagon). First, after a rotary valve induces twenty-four intake jet flows simultaneously at a negative pressure condition generated during the early expansion process of a single piston, collision of jet flows at the center of combustion chamber occurs, which results in high local compression ratio at the center and also single-point auto-ignition. Combustion experiments for this prototype engine at lean burning condition reliably show higher combustion pressure than flame propagation on chamber wall.
AB - A new compressive combustion principle due to colliding pulsed supermulti-jets has been proposed by us, which is expected to achieve high thermal efficiency over 50% and less combustion noise. This paper reports some combustion experiments for a new prototype engine based on this breakthrough principle, which has twenty-four intake nozzles for supermulti-jets (Tri-octagon). First, after a rotary valve induces twenty-four intake jet flows simultaneously at a negative pressure condition generated during the early expansion process of a single piston, collision of jet flows at the center of combustion chamber occurs, which results in high local compression ratio at the center and also single-point auto-ignition. Combustion experiments for this prototype engine at lean burning condition reliably show higher combustion pressure than flame propagation on chamber wall.
UR - http://www.scopus.com/inward/record.url?scp=85066505102&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85066505102&partnerID=8YFLogxK
U2 - 10.2514/6.2018-4629
DO - 10.2514/6.2018-4629
M3 - Conference contribution
AN - SCOPUS:85066505102
SN - 9781624105708
T3 - 2018 Joint Propulsion Conference
BT - 2018 Joint Propulsion Conference
PB - [publishername] American Institute of Aeronautics and Astronautics Inc, AIAA
ER -