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In addition, the F-T diesel engine has a slightly lower peak combustion pressure, a far lower rate of pressure rise, and a lower mechanical load and combustion noise than the conventional diesel engine.
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However, the maximum cylinder pressure, maximum pressure rise rate and combustion noises of the DME engine are lower than those of diesel.
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Calculation of the critical pressure rise at the shock wave associated with the separation of a turbulent boundary layer
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Calculation of the critical pressure rise at the shock wave associated with the separation of aturbulent boundary layer
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To open the urethra, a mechanical effort (due, for example, to a pressure rise in the bladder) must be applied.
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Disappearance of the tic reaction was considered to be one of the verified indexes for BD via encephalic pressure increase.
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The Region of Rat Chromosome 10 (the NgfrGene Locus) Is Associated with Blood Pressure Increase in Response to Emotional Stress
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Attention is drawn to the pressure increase in the pores of a carbon-carbon composite oxidizing in air at high temperatures.
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The evaporation of the drops results in a pressure increase ahead of the wave and the shock wave as it were "climbs" to increasing pressure level.
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It is found that a pressure increase results in the shift of maxima of the dielectric loss tangent towards lower frequencies, in an increase in the time of relaxation, and in a nonlinear variation of the value of permittivity.
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At temperature lower than 300°C (including 300°C), the grain sizes of the samples first increase with the pressure increasing from 1 to 3 GPa and later decrease from 4 to 6 GPa.
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At temperature higher than 400°C (including 400°C), the grain sizes of the samples increase with the pressure increasing from 1 to 6 GPa.
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In this study the Japanese long ear rabbits were used and biliary tract pressure increasing and splanchnic nervous plexus blocking experiments were conducted.
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The results show that the ductility of the disordered alloy decreased slightly with the hydrogen pressure increasing, while that of the ordered alloy decreased rapidly with the hydrogen pressure increasing.
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The question was examined whether the blood pressure increasing effect of mincralocorticoids is related to an alteration of noradrenaline inactivation.
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| A vortex flow combustion chamber has been developed for the purpose of improving the performance of a diesel engine originally fitted with a swirl combustion chamber. The test results prove that the diesel engine fitted with vortex flow combustion chamber gives much better performance, such as less specific fuel consumption, less smoke under high load condition, higher BMEP, lower maximum pressure, lower pressure rising rate, less NO_x emission, lower combustion noise, lower thermal load on cylinder head, and... A vortex flow combustion chamber has been developed for the purpose of improving the performance of a diesel engine originally fitted with a swirl combustion chamber. The test results prove that the diesel engine fitted with vortex flow combustion chamber gives much better performance, such as less specific fuel consumption, less smoke under high load condition, higher BMEP, lower maximum pressure, lower pressure rising rate, less NO_x emission, lower combustion noise, lower thermal load on cylinder head, and so on. | 为改善涡流燃烧室柴油机的性能,发展和研制了一种新颖涡流式燃烧室——旋流式燃烧室。通过试验证实,新燃烧室的最高平均有效压力、爆发压力、压力升高率、NO_x排放量、燃烧噪声、缸盖热负荷以及在高负荷时的油耗、烟度等方面均优于原机所用的传统涡流式燃烧室。 | This paper shows some experimental results of the offect of injection timing, charging pressure and fuel delivery per cycle, on combustion characteristics of diesel engine, that is, on the cylinder pressure at ignition, maximum cylinder pressure, maximum rate of pressure rise and the shape of indication diagram, etc. The corresponding discussions are also given in the paper. | 本文对喷油提前角、进气增压压力和每循环供油量等因素对柴油机着火时气缸内压力、最高燃烧压力、最大压力升高率以及示功图形状等燃烧特性的影响作了试验研究。文中给出了试验结果,并作了相应的论述。 | Experimental investigation is made on burning fuel mixed with methanol in a swirl chamber diesel engine. The methanol-diesel emulsion formation and methanol-air mixing are treated at length. According to the ignition delay and the rate of pressure rise, etc., the combustion characteristics with different ways of using fuel mixtures are discussd. Principal methods are recommended for improving thermal efficiency. | 本文对在涡流燃烧室柴油机上掺烧甲醇进行了试验研究,着重分析了甲醇与来油形成乳化液和甲醇与空气混合的问题。文中从滞燃期、压力升高率、不同掺烧甲醇方式及其特点等方面论述了柴油机掺烧甲醇的燃烧特性,指出了改善柴油机掺烧甲醇时热效率的主要途径。 | | | | << 更多相关文摘 |
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压力升高
pressure rise
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