面对能源和环境的巨大压力,混合动力电动汽车(Hybrid Electric Vehicle,HEV)成为汽车行业发展的一个重要方向。能量管理是HEV动力系统控制策略的核心,是整车动力性、经济性和驾驶性的重要保障,如何优化管理整车能量和提高能量利用率是HE...面对能源和环境的巨大压力,混合动力电动汽车(Hybrid Electric Vehicle,HEV)成为汽车行业发展的一个重要方向。能量管理是HEV动力系统控制策略的核心,是整车动力性、经济性和驾驶性的重要保障,如何优化管理整车能量和提高能量利用率是HEV面临的重大挑战。首先从多个角度对HEV能量管理问题进行概述,进而对HEV能量管理策略的研究进展及现状进行了全面综述,基于优化式和规则式两个角度列举不同的能量管理策略,分析并总结了不同的能量管理策略的优点及不足。最后综合分析HEV能量管理系统的特点及影响因素,并对HEV能量管理的研究方向进行了展望。展开更多
Rare earth composite materials radiating far-infrared rays were prepared according to far infrared absorption spectrum of main component in liquefied petroleum gas (LPG). The composite materials were characterized by ...Rare earth composite materials radiating far-infrared rays were prepared according to far infrared absorption spectrum of main component in liquefied petroleum gas (LPG). The composite materials were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transformed infrared spectra(FTIR). The results show that after the composite materials were calcined at 873 K for 4 h, FTIR spectra of rare earth composite materials display two new peaks at 1336 and 2926 cm-1 available for activating LPG.展开更多
Tourmaline was modified with cerous nitrate and lanthanum nitrate by coprecipitation method. Through characterization by differential thermal analysis, transmission electron microscopy, X-ray diffraction, and Fourier ...Tourmaline was modified with cerous nitrate and lanthanum nitrate by coprecipitation method. Through characterization by differential thermal analysis, transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy, it was found that the tourmaline modified with La-doped nano-CeOhad a better far infrared emitting property than the tourmaline modified with CeO2, which depended on La enhancing the redox properties of CeO, leaded to much more oxidation of Fe2+ to Fe3+ in the tourmaline. Based on the results of the water boiling test, it was found that the tourmaline modified with La-doped nano-CeOcould decrease the consumption of liquefied petroleum gas, which resulted from the tourmaline modified with La-doped nano-CeOdecreasing the molecular clusters volume of liquefied petroleum gas and combustion-supporting air.展开更多
Mice were watered with cerous nitrate solution (2, 20, 200 mg·kg-1) according to daily drinking water volume for 50 days and the effects of cerous nitrate on nonspecific immunity in mice were investigated. The re...Mice were watered with cerous nitrate solution (2, 20, 200 mg·kg-1) according to daily drinking water volume for 50 days and the effects of cerous nitrate on nonspecific immunity in mice were investigated. The results showed that the total number of peripheral white blood cell, the clearance rate of charcoal particles, the indices of thymus and spleen were increased on different degrees, and associated with the watering dose, noting that these indices were increased significantly by cerous nitrate at a dose of 20 mg·kg-1 compared with control group. Therefore, it was concluded that the nonspecific immunity could be improved by rare earth Ce in mice.展开更多
The rare earth composite ceramic materials were prepared using rare earths and far infrared natural mineral. The effects of the as-prepared ceramic materials on the oil consumption and air pollutants emissions of oil-...The rare earth composite ceramic materials were prepared using rare earths and far infrared natural mineral. The effects of the as-prepared ceramic materials on the oil consumption and air pollutants emissions of oil-burning boiler were investigated. The results show that the composite ceramic materials can radiate higher intensity of far infrared. The molecular movement is strengthened and the chemical bonds of the molecules are easily ruptured when the diesel oil is dealt with the composite materials. The oil-saving rate of the RBS·VH-1 .5 boiler dealt with the rare earth composite ceramic materials is 3.49%, and the reducing rates of CO and NO in the exhaust gas are 25.4% and 9.7%, respectively.展开更多
Rare earth composite ceramic materials (RE/CM) were prepared by the method of firing the mixtures of the rare earth elements, polar crystal mineral materials and clays. The effects of processing method on the reducing...Rare earth composite ceramic materials (RE/CM) were prepared by the method of firing the mixtures of the rare earth elements, polar crystal mineral materials and clays. The effects of processing method on the reducing exhaust emissions were studied. The results show that after dealt with the ceramic balls, the surface tension of gasoline, and the CO concentration among exhaust emissions during combustion, decrease by 2.7% and 11.5%, respectively; however the temperature of the inner flue increases by 4.8%.展开更多
文摘面对能源和环境的巨大压力,混合动力电动汽车(Hybrid Electric Vehicle,HEV)成为汽车行业发展的一个重要方向。能量管理是HEV动力系统控制策略的核心,是整车动力性、经济性和驾驶性的重要保障,如何优化管理整车能量和提高能量利用率是HEV面临的重大挑战。首先从多个角度对HEV能量管理问题进行概述,进而对HEV能量管理策略的研究进展及现状进行了全面综述,基于优化式和规则式两个角度列举不同的能量管理策略,分析并总结了不同的能量管理策略的优点及不足。最后综合分析HEV能量管理系统的特点及影响因素,并对HEV能量管理的研究方向进行了展望。
基金Project supported by the Key Technologies R & D Programme of Tianjin (06YFGZGX02400)
文摘Rare earth composite materials radiating far-infrared rays were prepared according to far infrared absorption spectrum of main component in liquefied petroleum gas (LPG). The composite materials were characterized by scanning electron microscope (SEM), X-ray diffraction (XRD), and Fourier transformed infrared spectra(FTIR). The results show that after the composite materials were calcined at 873 K for 4 h, FTIR spectra of rare earth composite materials display two new peaks at 1336 and 2926 cm-1 available for activating LPG.
基金the Key Technologies R &D Programme of Tianjin (06YFGZGX02400)
文摘Tourmaline was modified with cerous nitrate and lanthanum nitrate by coprecipitation method. Through characterization by differential thermal analysis, transmission electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy, it was found that the tourmaline modified with La-doped nano-CeOhad a better far infrared emitting property than the tourmaline modified with CeO2, which depended on La enhancing the redox properties of CeO, leaded to much more oxidation of Fe2+ to Fe3+ in the tourmaline. Based on the results of the water boiling test, it was found that the tourmaline modified with La-doped nano-CeOcould decrease the consumption of liquefied petroleum gas, which resulted from the tourmaline modified with La-doped nano-CeOdecreasing the molecular clusters volume of liquefied petroleum gas and combustion-supporting air.
文摘Mice were watered with cerous nitrate solution (2, 20, 200 mg·kg-1) according to daily drinking water volume for 50 days and the effects of cerous nitrate on nonspecific immunity in mice were investigated. The results showed that the total number of peripheral white blood cell, the clearance rate of charcoal particles, the indices of thymus and spleen were increased on different degrees, and associated with the watering dose, noting that these indices were increased significantly by cerous nitrate at a dose of 20 mg·kg-1 compared with control group. Therefore, it was concluded that the nonspecific immunity could be improved by rare earth Ce in mice.
基金Project supported by the Key Technologies R & D Programme of Tianjin (06YFGZGX02400)
文摘The rare earth composite ceramic materials were prepared using rare earths and far infrared natural mineral. The effects of the as-prepared ceramic materials on the oil consumption and air pollutants emissions of oil-burning boiler were investigated. The results show that the composite ceramic materials can radiate higher intensity of far infrared. The molecular movement is strengthened and the chemical bonds of the molecules are easily ruptured when the diesel oil is dealt with the composite materials. The oil-saving rate of the RBS·VH-1 .5 boiler dealt with the rare earth composite ceramic materials is 3.49%, and the reducing rates of CO and NO in the exhaust gas are 25.4% and 9.7%, respectively.
文摘Rare earth composite ceramic materials (RE/CM) were prepared by the method of firing the mixtures of the rare earth elements, polar crystal mineral materials and clays. The effects of processing method on the reducing exhaust emissions were studied. The results show that after dealt with the ceramic balls, the surface tension of gasoline, and the CO concentration among exhaust emissions during combustion, decrease by 2.7% and 11.5%, respectively; however the temperature of the inner flue increases by 4.8%.
