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.
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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 - American Institute of Aeronautics and Astronautics Inc, AIAA
T2 - 54th AIAA/SAE/ASEE Joint Propulsion Conference, 2018
Y2 - 9 July 2018 through 11 July 2018
ER -