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Cycle-by-cycle variations in some parameters of the combustion and performance during a dual-fuel premixed charge compression ignition (PCCI) combustion process were investigated on a modified direct injection diesel engine with dimethyl ether (DME) as premixing fuel. Experiments were conducted under the two different loads with the different DME quantities at a constant engine speed (1700r/min)....
In this study, effects of DME (dimethyl ether) pre-mixing ratio and cooled external EGR (exhaust gas recirculation) rate on combustion, performance and emission characteristics of a DME-diesel dual fuel PCCI (premixed charge compression ignition) engine were investigated in a 2105 engine. PCCI combustion at a high pre-mixing ratio exhibited a three-stage-combustion behavior. The peak values of heat...
We discussed the potential and problem of applying remote sensing technique on monitoring remediation of temporary land use (tLU) in road construction project, based on two case studies which are ‘Cao-Nan’ and ‘Chao-Hei’ highways in Liaoning province. In either case, we combined three (before, during, and after construction) medium resolution satellite images (Landsat5-TM or HJ-CCD, abbreviated as...
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