| "Ecological questions about traffic" consisted of problems about the interplay, integrationand balanced and sustainable development between the transportation system and theenvironment system which was a hot issue all the time.Energy conservation and environmental protection should be the dual pressures of thedevelopment of the current internal-combustion engine based on petroleum."Nitrogen collection&Oxygen enrichment" of the bio-enzyme were put forward, and the bio-enzyme technology wasused to the automobile on it’s air intake system. At the same time, reseachs on energyconservation and emission reduction of automobiles had been studied in this study. The resultswere as follows.1.Resech on "Nitrogen collection&Oxygen enrichment" of the bio-enzymeThe distribution of the oxygen were enriched significantly by "Nitrogen collection&Oxygen enrichment" of the bio-enzyme. O2concentration was increased with the increasingvertical distance to interface processed by the bio-enzyme. O2concentration in the place of2cmfrom the above interface was less than O2concentration in the air, O2concentration in the placeof4cm from the above interface was almost equal to the O2concentration in the air, and whenthe depth reaches to6cm, O2concentration in the place of6cm from the above interface wasmore than the O2concentration in the air. At the same time, the biological effect of thebio-enzyme decreased gradually with the time, and the failure time of the bio-enzyme was about30d.2.Screening on the places and carriers treated with the bio-enzyme on it’s air intake systemAll fuel consumption of the experimental vehicle treated by the bio-enzyme both in the farplace of the air filter and the near place of the motor were reduced in all working conditions, atthe same time, the fuel consumption of the near place treated by the bio-enzyme of the motorwere less than that of the far place of the air filter. Three carriers treated with the bio-enzymewere as follows: the PVC plastic pipe wall brushed with the bio-enzyme (it was called P in thisstudy, the same below), the honeycomb ceramic pipe wall brushed with the bio-enzymes (it wascalled C in this study, the same below), and the metal filaments brushed with the bio-enzyme (itwas called M in this study, the same below). The results showed that all fuel consumption of theexperimental vehicle treated by the bio-enzyme were reduced, and exhibited as follows: P﹤C﹤M.Comparation the fuel saving ratio of Santana treated by M carrier in all working conditionswith other bio-enzyme carriers, those were better than any other bio-enzyme carriers. Comparedwith the control, the fuel saving ratio of Santana treated by M carrier was10.5%of700r/min,21.8%of1500r/min,6.6%of2500r/min,17.8%of50km/h and6.6%of100km/h3.Resech on energy conservation of the automobile treated by M carrier on it’s air intake system All fuel consumption of the experimental vehicle treated by M carrier were reduced, and thefuel consumption of the middle and hight work condition were less than that of the low workcondition by contrast. There were significant correlationships between the fuel consumption ofcars and it’s work conditions by SPSS, and the temperature, humidity and automobile type werenot exhibited any correlationship between with the fuel consumption of the automobile whichwere demonstrated that the activity of M carrier treated by the bio-enzyme were stable underdifferent temperatures and humidities.4.Resech on environmental protection of the automobile treated with the bio-enzyme on it’s airintake systemThe results showed that the NO emission changing rate was17.25%by M,14.83%by C,and13.7%by P, the HC emission changing rate was27.14%by M,24.32%by C and7.08%by P, and the CO emission changing rate was19.27%by M,15.74%by C and12.08%by P. The emission changing rate of NO, HC and CO were orderly: M＞C＞P.5.Resech on VOCs reduction of the automobile treated with the bio-enzyme on it’s air intakesystemVOCs was detected by PID, and the results showed that VOCs reduction effect was M> C>P according to the total volumetric fraction of VOCs, VOCs reduction effect of M was better thanthose of the others. and the total volumetric fraction of VOCs by M was7.70%of P and7.87%ofC. Aromatic VOCs (2–methyl propyl–benzene,1,2,5-trimethylbenzene,1-methyl-3-propyl-benzene, diethylbenzene,1-ethyl-2,4-dimethyl-benzene and2-ethyl-1,4-dimethyl-benzene),alkane (2,2-methyl-butane,2-methyl-pentane,3-methyl-pentane, hexane, decane,4-ethyl-decane,5-methyl-decane and undecane) and olefins (2-methyl-1-butene,2-pentene, cyclopentene andmethyl-cyclopentene), aromatic hydrocarbon (ethylbenzene,1-ethyl-2-methyl-benzene,1-ethyl-2-methyl-benzene and1,2,4–mesitylene) were not detected in M. Exhaust BTEXemissions of the automobile treated with the bio-enzyme on it’s air intake system were greatlyreduced. Exhaust BTEX emissions of the control was benzene2.9times, toluene3.4times anddimethylbenzene3.7times of the means of the automobile treated with the bio-enzyme on it’s airintake system, respectively.The bio-engineering techniques were used in mechanical engineering for the first timewhich would expand the application space of bio-engineering technology in the field ofmechanical engineering. The combustion efficiency of the automobile treated with thebio-enzyme on it’s air intake system was improved that reduced harmful gas emissions and savedenergy. The technical measure (automobiles treated with bio-enzyme on it’s air intake system)had exhibited great benefits which could not only produce economic effect but also giveecological effect. |
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