A variable valve timing mechanism has been applied in a high-speed direct injection diesel engine. The effective compression ratio (εeff) is lowered by means of late intake valve closing, while keeping the expansion ratio constant. Premixed charge compression ignition (PCCI) combustion, adopting the Miller cycle, was experimentally realized and numerically analysed. Significant improvements in NOx (nitrogen oxides) and soot emissions were achieved for a wide range of engine speeds and loads frequently used in a transient mode test. The operating range of the Miller-PCCI combustion has been expanded up to an indicated mean effective pressure of 1.3 MPa.
OgawaH.LiT.MiyamotoN.KidoS.ShimizuH., ‘Dependence of ultra-high EGR and low temperature diesel combustion on fuel injection conditions and compression ratio.’SAE paper 2006-01-3386
2.
KandaT.HakozakiT.UchimotoT.HatanoJ.SonoH., ‘PCCI operation with fuel injection timing set close to TDC.’SAE paper 2006-01-0920
3.
NevinR. M.SunY.GonzalezM. A.ReitzR. D., ‘PCCI investigation using variable intake valve closing in a heavy duty diesel engine.’SAE paper 2007-01-0903
4.
KodamaY.NishizawaI.SugiharaT.SatoN.IijimaT.YoshidaT., ‘Full-load HCCI operation with variable valve actuation system in a heavy-duty diesel engine.’SAE paper 2007-01-0215
5.
KawanoD.SuzukiH.IshiiH.GotoY.OdakaM.MurataY.KusakaJ.DaishoY., ‘Ignition and combustion control of diesel HCCI.’SAE paper 2005-01-2132
6.
MurataY.KusakaJ.OdakaM.DaishoY.KawanoD.SuzukiH.IshiiH.GotoY., ‘Achievement of medium engine speed and load premixed diesel combustion with variable valve timing.’SAE paper 2006-01-0203
7.
KamimotoT.BaeM., ‘High combustion temperature for the reduction of particulate in diesel engines.’SAE paper 880423
8.
AkihamaK.TakatoriY.InagakiK.SasakiS.DeanA. M., ‘Mechanism of the smokeless rich diesel combustion by reducing temperature.’SAE paper 2001-01-0655
9.
KitamuraT.ItoT.KitamuraY.UedaM.SendaJ.FujimotoH., ‘Soot kinetic modeling and empirical validation on smokeless diesel combustion with oxygenated fuels.’SAE paper 2003-01-1789
10.
GolovitchevV. I.MontorsiL.DenbrattI.CorcioneF.CoppolaS., ‘Numerical evaluation of direct injection of urea as NOx reduction method for heavy duty diesel engines.’SAE paper 2007-01-0909
11.
KusakaJ.MontorsiL.GolovitchevV. I.DenbrattI., ‘Numerical simulation of combustion in a heavy duty diesel engine.’ FISITA paper F2006P398
12.
ShimoD.KataokaM.SaganeY.FujimotoH.TerazawaY., ‘EM reduction by a large amount of EGR and excessive cooled intake gas in diesel engines.’ FISITA paper F2006P372
13.
AmsdenA. A., ‘KIVA-3V: A block-structured KIVA program for engines with vertical or canted valves.’ LA-13313-MS
14.
ReitzR. D., ‘Mechanism of atomization processes in high-pressure vaporizing sprays.’Atom. Spray Technol.3 (1987): 309–337
15.
KongS. C.HanZ.ReitzR. D., ‘The development and application of a diesel ignition and combustion model for multidimensional engine simulations.’SAE paper 950278
16.
RicartL.ReitzR. D., ‘In-cylinder measurement and modeling of liquid fuel spray penetration in a heavy-duty diesel engine.’SAE paper 971591
17.
GolovitchevV. I.AtarashiyaK.TanakaK.YamadaS., ‘Towards universal EDC-based combustion model for compression ignited engine simulations.’SAE paper 2003-01-1489
18.
GolovitchevV. I., available from
19.
HanZ.ReitzR. D., ‘Turbulence modeling of internal combustion engines using RNG k-e models.’Combust. Sci. Technol.106 (1995): 267–295
20.
LiuA. B.MatherD.ReitzR. D., ‘Modeling the effects of drop drag and break upon fuel sprays.’SAE paper 930072
21.
SuT. F.PattersonM. A.ReitzR. D.FarrellP. V., ‘Experimental and numerical studies of high pressure multiple injection sprays.’SAE paper 960861
22.
NordinN., available from
23.
CurtisE. W.UludoganA.ReitzR. D., ‘A new high pressure droplet vaporization model for diesel engine modeling.’SAE paper 952431
24.
StantonD. W.LippertA. M.ReitzR. D.RutlandC. J., ‘Influence of spray—wall interaction and fuel films on cold starting in direct injection diesel engines.’SAE paper 982584
25.
HanZ.UludoganA.HampsonG. J.ReitzR. D., ‘Mechanism of soot and NOx emission reduction using multiple-injection in a diesel engine.’SAE paper 960633
26.
BabajimopoulosA.AssanisD. N.FlowersD. L.AcevesS. M.HesselR. P., ‘A fully integrated CFD and multi-zone model with detailed chemical kinetics for the simulation of PCCI engines.’ In Proceedings of 15th International Multidimensional Engine Modeling User's Group Meeting
27.
NagleJ.Strickland-ConstableR. F., ‘Oxidation of carbon between 1000—2000 degrees C.’ In Proceedings of 5th Carbon Conference, 1962, vol. 1
28.
PattersonM. A.KongS. C.HampsonG. J.ReitzR. D., ‘Modeling the effects of fuel injection characteristics on diesel engine soot and NOx emissions.’SAE paper 940523
