Iida Laboratory Research Projects 2005

1. Iida Laboratory Research Projects 2005 2005/6/27 Keio University Faculty of Science & Technology Department of System Design Engineering School of Integrated Design Engineering 3-14-1 Hiyohsi, Kouhoku-ku, Yokohama-city, Kanagawa, 223-8522 Japan, Yagami Campus 25-311 TEL: 045-563-1151 (Ext. 43026) FAX: 045-560-3232

2. KEIOUNIVERSITY Research Projects and Member LEV team Analysis of Local air pollution Study on Local Air Pollution Using On-board Measurement System M2 Norifumi Takada, M1 Mio Tanaka, B4 Yumi Kawakami GX team Development of the Control System Using EGR for the HCCI Engine Running on DME M2 Masato Ikemoto, M1 Tetsuo Omura, B4Yoshihiko Kanoto YAM team The Study on Auto-ignition and Combustion Process of the Fuel Blended with Methane and DME in HCCI Engine D3 Susumu Sato, M2 Daisuke Yamashita, M1 Junpei Ozaki, B4 Azusa Ito OAE team Chemiluminescence Measurement of HCCI Combustion M2 Satoshi Ketadani, M1 Daisei Nagaoka, B4Satoshi Yamaoki RCM team Diesel Spray Combustion in a HCCI Using a RCM D3 Ock Taeck Lim, B4 Akihito Taiji, B4 Hiroaki Nakano

3. KEIOUNIVERSITY Development of the Control System Using EGR for the HCCI Engine Running on DME Masato Ikemoto, Tetsuo Omura, Yoshihiko Kanoto Purposes ・ To develop Homogeneous Charge Compression Ignition (HCCI) engine running on Di-Methyl Ether(DME) ・ To construct the control system using EGR which resolve the problem of HCCI combustion, ignition timing, knocking and combustion efficiency Fig.1 DME Structure, Ignition Delay Fig.2 Proposed Control System Results Fig.3 Temperature, R.H.R. History Fig.4 Engine Performance ・ DME is suitable fuel for the HCCI engine in terms of combustion characteristics ・ internal EGR and external EGR are effective to control ignition timing and combustion reaction speed ・ Developed DME HCCI engine gets high thermal efficiency but much lower IMEP 2005 IIDA LABORATORY

4. 2002-12-7 Yokohama Urban Route Driver : Y.Takada Payload : 1000kg Engine condition : HOT 0.05 g-NOx/s 0.02 g-NOx/s KEIOUNIVERSITY Study on Local Air Pollution Using On-board Measurement System Norifumi Takada, Mio Tanaka, Yumi Kawakami Analysis of Local air pollution Exhaust gas Where? NOx What affect Exhaust gas? PM How much gases were exhausted? Video image CO2 Intensive pollution Driving test at Seika Univ. in China Previous researches ・Relationships differences of drivers ,vehicles and exhaust emissions. ・Behavior of exhaust emissions around inter section　　・Relationship classification of roads(wide and narrow) and exhaust emissions.　　・Estimation of emission factor by vehicle speed and travel resistance Sponsored by 2000~2003 National Institute for Environmental Studies, 2004~2006Aid of environmental Studies from NISSAN 2005 IIDA LABORATORY

5. KEIOUNIVERSITY Analysis of the effect of residual gas on spatial structure of HCCI combustion flame using two dimensional luminescence measurement Satoshi Ketadani, Daisei Nagaoka, Satoshi Yamaoki Background Object and Method Object：Investigation of the effect of residual gas on HCCI combustion Method：Spatial structure of HCCI combustion flame is investigated using two dimensional luminescence measurement with 4-strokeengine and Rapid Compression Machine (RCM). Experimental apparatus The engine with residual gas: 4-stroke optical accessibly engine The engine Without residual gas:RCM Result (two dimensional images and histogram) 4-stroke engine with residual gas RCM without residual gas DME/Airf=0.32 e=7.2 600rpm I.I. Gain 500 Exposure time 0.55ms DME/Airf=0.24 e=14.6 Compression speed about 300rpm I.I. Gain 5000 Exposure time 1ms It was appeared that the fluctuation of luminescence intensity was more equal than in the case with residual gas. 2005 IIDA LABORATORY

6. KEIOUNIVERSITY Diesel Spray Combustion in a HCCI Using a RCM Ock Taeck Lim, Akihito Taiji, Hiroaki Nakano Background and Objective Rapid Compression Machine A Diesel combustion has serious problem ; PM, NOx etc Pre-mixture Intermediate HCCI H2O2, HCHO, CO, etc. HCCI-DI • duplicated a single diesel type compression cycle • No effect of flow, residual gas and cycle by cycle • Direct Photograph with Optical accessible head • Grateful effect of reducing PM, NOx using intermediate as like H2O2, HCHO CHEMKIN Result Conclusion DME/Air, tinj=285ms, P0=0.1MPa, T0=353K • There are H2O2, HCHO at DME Φ=0.01 and 0.02 HCCI combustion. • The ignition delay and flame existence • at DME Φ=0.02 is about 1.5ms delay and • about 0.75ms at DME Φ=0.01 • Using CHEMKIN, we can presumes how much is the intermediate of HCCI combustion process This year Project • Inject at inhomogeneous condition, Change of Injection timing • Change HCCI fuel ; Butane, n-Heptane, iso-Octane, DME 2005 IIDA LABORATORY

7. KEIOUNIVERSITY The Study on Auto-ignition and Combustion Process of the Fuel Blended with Methane and DME in HCCI Engine Susumu Sato, Daisuke Yamashita, Junpei Ozaki, Azusa Ito Purpose We use the Fuel blended with Methane and DME and search the effect of mixing ratio on ignition temperature and ignition timing . Results Experiment system RHR Temperature Pressure A fCH4=0 fDME=0.355 A fCH4=0 fDME=0.355 A fCH4=0 fDME=0.355 qRHR_mac=-19deg DME large Pmax=8.0MPa Tig=663K qig=-28deg B fCH4=0.16 fDME=0.18 B fCH4=0.16 fDME=0.18 B fCH4=0.16 fDME=0.18 qRHR_mac=-9deg Pmax=7.9MPa Tig=689K qig=-26deg C fCH4=0.25 fDME=0.1 C fCH4=0.25 fDME=0.1 C fCH4=0.25 fDME=0.1 qRHR_mac=5deg large CH4 Pmax=6.4MPa Tig=732K qig=-21deg Pmax: Peak pressure，Tig: Ignition temperature，qig: Ignition timing，qRHR_max: RHR peak timing ・ Ignition temperature became higher （lower） by increasing Methane （DME）ratio. ・ Ignition timing and RHR peak timing became later （faster） by increasing Methane （DME）ratio. ・ Peak pressure became lower by delaying RHR peak timing. Plan We make the same experiment by using CH4/n-C4H10, CH4/CO2, CH4/H2 etc. 2005 IIDA LABORATORY