An Experiment And Study Of Gx-1 Emulsifier On N485q D.i.diesel Engine About Saving Energy And Reducing Pollutants

This thesis firstly elaborated the saving energy and reducing pollutants mechanism of emulsified fuel in theory, pointed out the possibility of burning with unsteady emulsified fuel in diesel engine. On the basis of the character of unsteady emulsified fuel, regarding N485Q DI diesel engine as the object of study, 4 emulsifiers with different structure, which needn't add fuel additive, can burn as emulsifying and whose energy is small was designed. Then the best emulsifier which was used cooperatively with the engine was selected through the steady time of emulsified fuel of all sorts of ratio of water addition in fuel and also through the experiment of viscosity ?temperature. Secondly, according to Nation Standard. GB3847-1 999, Limits and measurement methods of exhaust visible pollutants from compression ignition(C .I.)engines and vehicles equipped with CI. engines, the saving energy and reducing pollutants study including fuel consume ratio, emission smoke and emission gas temperature was done at the rotational speed at maximum torque(1800r/min) and rotational speed at maximum power(2300r/min) on the condition of the structure parameter of original numerical of the engine and the best emulsifier, then the best ratio of water in diesel was found out. Thirdly, in order to study more deeply on the engine with its saving energy and reducing pollutants effect on the condition of burning with emulsified fuel of the best ratio of water in diesel, an experiment were developed by the rotate design of positive intersection of 2 operating parameters(injection advance angle and injection pressure) on the different load (12.68kw,16.9Okw,21.3Okw) of the rotation speed at maximum power(2300r/min). The equations about fuel consumption were set up and their minimum fuel consumption and structure parameters in theOry were calcuated through the opbeation design with methodof exterior penaity boction. T'hell, the engine sane parameterswere adjusted to the theoretical vaiues and the practical vaiues of itsfuel consumption would be given. The minhoum errors of the fuelconsumption between theoretical value and practical value would beregarded as the using value. Finally, a velocity characteristiceXPeriment wun full load was dOne under the adjusAnen of enginesmicfore parameters, and the olltcome was contrasted with theoutcome of the engine buming with the pure diesel on the conditionof its original StrUCtUe parameters. At the end of the exPerhaent, aninVestigation on Whether baming emusified fuel would havenegative effects, such as cormPt and extra wear on cylindef, wouldbe had.The research results showed that this N485Q D.I. diesel enginewould have the best effect of saving energy and reducing pollutansWhen it bumed with the emusified fuel, which was equipped by theNO. 4 emulsifier and Whose ratio of water to emulsified fuel was l2%.By this, it's range of saving diesel was 1.9~4.3%, range of reducingsmoke emission was l9.l -- 21.8%,and range of reducing gasemission temPeratue was l l ~ 15 oC (It was thought that the emissionof NOxreduced). But at the same tAne, the maxhaUIn power of thisengine reduced and its reducing range was 4.7l --9.52%, also therewere more dot-cormPt on cylinder wall because that plltting waterinto diesel led to more chances of element S tw into SO,'- andSO.'-. Moreovef, pnding watCr into diesel wouldll't lead to theaction of flushing cylindet, so there wouldn't be any extra wear ofcvlinuer...