| Project/Area Number |
04505001
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Research Field |
Thermal engineering
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| Research Institution | HIROSHIMA UNIVERSITY |
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Principal Investigator |
HIROYASU Hiroyuki Hiroshima Univ., Engineering Dept., Professor, 工学部, 教授 (40034326)
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| Co-Investigator(Kenkyū-buntansha) |
SAITO Akinori Toyota Central Res.& Develop.Labs., Inc., Mechcanical Engineering Dev.1, Manager, 機械1部, 室長
TAKASAKI Kouji Kyusyu Univ., Engineering Dept., Assoc.Prof., 工学部, 助教授 (30154769)
ARAI Masataka Gunma Univ., Engineering Dept., Professor, 工学部, 教授 (80112176)
MIYAMOTO Noboru Hokkaido Univ., Engineering Dept., Professor, 工学部, 教授 (60003208)
FUJIMOTO Hajime Doshisya Univ., Engineering Dept., Professor, 工学部, 教授 (90051630)
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| Project Period (FY) |
1992 – 1994
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| Project Status |
Completed (Fiscal Year 1994)
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| Budget Amount *help |
¥63,500,000 (Direct Cost: ¥63,500,000)
Fiscal Year 1994: ¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 1993: ¥29,200,000 (Direct Cost: ¥29,200,000)
Fiscal Year 1992: ¥30,900,000 (Direct Cost: ¥30,900,000)
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| Keywords | Ultra High-Pressure Injection / Electro-Hydrauric Control / Fuel Spray / Spray Combustion / Combustion Chamber / Nitric Oxide / Particulate |
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| Research Abstract |
Spray characteristics of the ultra high-pressure injection spray were evaluated, and also diesel combustion characteristics and exhaust emissions were measured when the high-pressure njection system was applied to an experimental diesel engine. The following items were evaluated in this study.
> Atomization of diesel spray
> Simultanious concentration measurements of vapor and liquid in a diesel spray injected into high pressure and high temperature atomosphere
> Characteristics of sprays impinging onto a combustion chamber wall
> Initial process of the high-pressure injection spray
> Combustion characteristics and exhaust emissions of multi-stage injection diesel engine
> Spray characteristics of multi-stage injection
> Ambient gas entrainment into intermittent gas jets
> Exhaust emissions of high-pressure injection diesel engine
> Flame behavior of diesel flame in a combustion chamber
> Thickness of lubrication oil between cam and rollertapet
The results obtained by this research demonstrates effects of the high-pressure injection on spray characteristics, combustion characteristics and exhaust emissions quantitatively. Moreover, the results suggest how to apply the ultra high-pressure injection system to real diesel engines.
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