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摩托车发动机电控系统匹配技术与性能研究 总被引:1,自引:0,他引:1
在FY125-3P摩托车的FY156FMI发动机上,采用闭环电控技术,进行发动机与整车的优化匹配,与原化油器车相比,测得所开发的电控摩托车工况法CO、HC和NOx的排放量显著减少,低于欧Ⅲ排放限值的70%;发动机外特性燃油耗下降了15.9%;后轮驱动功率和最高车速稍小于化油器车,加速性能优于化油器车,尤其是超越加速性能提高明显. 相似文献
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《内燃机与动力装置》2017,(3)
通过涡轮增压来提高FSC赛车的比功率。根据目标功率对涡轮增压器进行选型计算。通过GT-Power软件仿真对FSC赛车用450mL发动机进行了涡轮增压匹配分析。通过GT-Power数值模拟对涡轮增压器压气机尺寸进行优化,以提高增压器的综合效率和响应速度。匹配分析与仿真结果表明,对增压器压气机尺寸进行优化能够有效地改善从市场上挑选的增压器与FSC小型发动机匹配效果。通过匹配增压器并进行优化,赛车的比功率增加了44%。 相似文献
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采用AVL-BOOST软件建立了天然气发动机的数学模型,验证了模型的有效性,通过变参数研究,分析了压缩比、点火提前角对发动机动力性和经济性的影响。研究结果表明,随着压缩比的增大,发动机的有效功率和最高爆发压力均呈上升趋势,压缩比在10~13的范围内,最高压力升高率始终在爆震警戒线以下,在点火提前角为27°~36°CA范围内,发动机的有效功率随着点火提前角的增大而增加,同时发动机的燃油经济性得到改善。 相似文献
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采用AVL-BOOST软件建立了天然气发动机的数学模型,验证了模型的有效性,通过变参数研究,分析了压缩比、点火提前角对发动机动力性和经济性的影响。研究结果表明,随着压缩比的增大,发动机的有效功率和最高爆发压力均呈上升趋势,压缩比在10~13的范围内,最高压力升高率始终在爆震警戒线以下,在点火提前角为27°~36°CA范围内,发动机的有效功率随着点火提前角的增大而增加,同时发动机的燃油经济性得到改善。 相似文献
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发动机低温起动加温锅性能匹配研究 总被引:2,自引:0,他引:2
为进行发动机低温起动加热系统加温锅性能匹配,采用AMESIM软件建立了某发动机加热系统模型,研究了不同的加热功率对发动机起动性能的影响。结果表明:存在一个满足起动性能要求的最小的加热功率,同时也存在使起动准备时间最短的最佳加热功率。其结论对匹配加温锅功率具有一定的参考价值。 相似文献
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车用发动机匹配优化的一种试验分析方法 总被引:1,自引:1,他引:0
基于一台公路运输车辆在典型路段的使用试验,通过采集发动机电控系统的信息,结合发动机在台架上的试验数据,加上传统的整车路试试验统计方法,得到平均车速、平均燃油耗、档位利用率分布、车速分布、整车运行工况在发动机万有特性上的分布等结果,提出了车用发动机在整车上匹配优化的一种新的试验分析方法。 相似文献
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基于响应面法的高强化柴油机燃烧系统多参数多目标优化匹配研究 总被引:1,自引:0,他引:1
通过引入一种新的优化方法———响应面法,对高强化柴油机燃烧系统进行多参数多目标优化匹配研究。基于有限数量的CFD三维仿真结果,构建了以燃烧室喉口半径、涡流比和喷孔数为输入参数及功率和最高燃烧压力为输出结果的响应面函数,并通过其进行各参数对性能影响的显著性检验和降维分析。基于所得响应面函数进行多参数全局寻优,得到3种具有不同特点的优化方案并与原方案进行缸内微观过程的对比分析。研究结果表明:对于所研究的机型,在喷油压力及喷孔流通面积恒定的情况下,燃烧室喉口半径与喷孔数的匹配和燃烧室喉口半径与涡流比的匹配分别是对功率和最高燃烧压力的主要影响因素;随着喷孔数的增加,功率对涡流比和燃烧室喉口半径的敏感程度逐渐减小,最高燃烧压力对燃烧室喉口半径的敏感程度逐渐增加;在所得的3种优化方案中,10孔和8孔方案可分别单独显著改善功率和最高燃烧压力指标,9孔方案可同时小幅度改善功率和最高燃烧压力指标。 相似文献
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CY6102 BZQ型柴油机的研制 总被引:2,自引:0,他引:2
论述了6102BZQ型增压柴油机的研制。该机在6102系列柴油机基础上,采用废气涡轮增压进行技术改造,提高了标定功率,增大了扭矩储备。动力性和经济性均处于国内领先水平。该机装车道路试验情况良好,特别适合高原地区环境条件使用。 相似文献
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This article analyses the engine and vehicle characteristics and CO2 emissions of the new passenger cars for the thirteen major brands of the European market. As in the first two articles of this work, the target is to find the real market parameters influencing exhaust CO2 emissions. This analysis is focused on the sales distribution of the major brands, EU average and within each country, and four main parameters of each brand having an impact on CO2 emissions: average vehicle weight, average engine capacity, average maximum and specific power. The average CO2 emissions of each brand on the new European driving cycle and its urban and extra urban parts are examined at the last part of this article. 相似文献
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本文针对车用柴油机普遍采用的“管带式”结构中冷器,利用计算与试验相结合的方法总结出了中冷器冷却效率和阻力系数与柴油机工作参数相关联的中冷器数学模型,数学模型反映的关系与试验结果取得了良好的吻合,应用该模型于增压中冷柴油机工作过程模拟计算也获得了较好的效果。 相似文献
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Özgün Balcı Yasin Karagöz Sefa Kale Seçkin Damar Azade Attar Hasan Köten Ahmet Selim Dalkılıç Somchai Wongwises 《International Journal of Hydrogen Energy》2021,46(30):16250-16266
Current environmental concerns on nitrogen oxides (NOx) and particulate matter (PM) emissions caused by diesel engines have led researchers to be interested in investigating vehicles with alternative power sources. Because of this reason, vehicle models with SI engine were adopted in the conducted study. Firstly, as an initial step, 1-D SI engine models were created with use of AVL Boost software. A four-cylinder engine model was created for conventional vehicle model, while a two-cylinder downsized engine was adopted as a subsystem of hybrid vehicle model. The models were based on experimental data obtained from a laboratory test setup with a single-cylinder engine. Subsequently, detailed engine maps on emissions and fuel consumption were generated with the developed ANN model. The fuel consumption and emission data, which were gathered from NEDC and WLTC simulations, were compared for conventional ICE, PEM FC and PEM FC + ICE powered vehicles with the help of the vehicle model which was developed by using Matlab Simulink software. Based on the results, it was concluded that there might be sufficient improvement in fuel consumption and significant improvement in emissions with the use of PEM FC that a hybrid driving system (PEM FC + ICE) can be utilized, and that emissions can be at 0 with the sole use of PEM FC. 相似文献
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本文论述了柳发6108Q型柴油机的设计原则和改进的主要技术措施.通过扩缸、加行程、改进燃烧系统和冷却系统、选用优质材料、采用先进加工工艺等方法,使整机性能达到同类机先进水平,定型试验表明:该机功率大、扭矩覆盖面广、低油耗区宽,是5~8t车的理想配套动力. 相似文献
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Gas engine heat pumps play an important role in energy saving and environment protection in both cooling and heating applications. In the present work, a thermal modelling of the gas engine driven heat pump in cooling mode is performed and system main parameters such as cooling capacity, gas engine energy consumption and primary energy ratio (PER) are computed. The modelling of the gas engine heat pump includes modelling of the scroll compressor, the plate evaporator and the gas engine. Discharged refrigerant mass flow rate and compressor power represent the main output parameters of the compressor semi-empirical model. Using the discharged refrigerant mass flow rates along with the available evaporation heat transfer correlations, the system cooling capacity is deduced. Based on the present experimental data, a correlation of gas engine energy consumption as function of compressor power, engine speed and ambient air temperature is obtained. Furthermore, the gas engine heat pump model is validated by comparing experimental and simulation data. The model error percentages to predict the cooling capacity, the gas engine energy consumption and the PER are 7%, 5%, 6% respectively. 相似文献
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The recent development to control the emissions of large diesel engines has provided opportunities for heat-driven cooling methods in vehicles. An adsorption air conditioning system is therefore proposed in this work for heavy-duty truck application. This system is powered by engine waste heat when the engine of a truck is running. When the engine is off, it can be operated by fuel fired heaters, a newly implemented technology to reduce truck idling. Hence, this system can not only reduce engine emissions but also improve the overall energy efficiency. A lumped parameter model of the system using zeolite-water as its working pair is developed, and the adsorption capacity of zeolite is simulated with the linear driving force model. The dynamic performance of the system and a parametric study on adsorbent mass transfer, operating temperatures and cycle operating periods are presented. Alternative working pairs and the potential to commercialize the system are also discussed. This system may be designed to satisfy the cooling requirement for idle reduction of long-haul trucks. 相似文献
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This article analyzes the engine and vehicle characteristics and the CO2 emissions of the new passenger cars for all segments of the European market. As in the first article of this work, the target is to find the real market parameters influencing exhaust CO2 emissions. The present analysis is focused on the segment sales distribution (EU average and within each country) and also in four parameters of each segment influencing CO2 emissions: average vehicle weight, average engine capacity, average maximum and specific power. The second part of this work concerns the CO2 emissions of each segment on the New European Driving Cycle and its urban and extra urban parts. 相似文献
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汽油机瞬态排放检测的新实践 总被引:10,自引:0,他引:10
本文介绍了采用底盘测功机和常规废气分析仪检测汽车发动机瞬态排放的方法,给出了修正排放检测信号的时间延迟和幅值畸变的措施。对搭载电喷汽油机的三种车型进行了加速一滑行模式的瞬态排放检测,提出了基于符号时间序列方法分析发动机瞬态排放的思路。 相似文献