Woody biomass was liquefied by water in an autoclave in the reaction temperature range of 280-420℃with sodium carbonate as the catalyst. The experimental results show that the yield of the main liquefaction product (heavy oil) was significantly influenced by the process conditions. The maximum yield of heavy oil was obtained at reaction temperature 380℃. The heavy oils obtained at different reaction temperature were analyzed by Fourier transform infrared spectroscopy (FTIR) and gas chromatography/mass spectrometry (GC/MS). The analytical results show the heavy oil is complex compound that contain hydrocarbon, aldehyde, ketone, hydroxybenzene and ester.

在电控汽油机参数未作任何调整的情况下，实验研究了汽油机燃用乙醇汽油对发动机经济性和动力性的影响。研究表明：电控汽油机改燃乙醇汽油后，部分负荷时汽油机的功率和转矩有所降低，但全负荷时汽油机的动力输出不变；与普通汽油相比，乙醇汽油的燃油消耗率增加5%-10%，而且汽油机的经济区范围变窄；但能耗率会有所改善，在怠速工况下，乙醇汽油会降低汽油机的CO、HC和NO2排放；乙醇汽油对汽油机性能的影响与空燃比控制策略有关。

用傅立叶变换红外光谱法对木质生物质在280-380℃水中的直接液化产物进行了研究。研究表明，木质生物质的液化可以分为2个阶段，即纤维素类和木质素类的液化；最终液化产物官能团受温度的影响不大；最终液化产物是复杂的混合物，含有烃、醛、酮、酚和酯等各类化合物。

介绍了一种适合二甲醚DME代用燃料的电控 PRVI (泵-轨-阀-嘴)喷射系统，并根据二甲醚的性质特点研究开发了系统电控单元的管理模块、 控制模块和计算机监控系统。通过在油泵试验台上的燃油喷射试验，验证了控制软件的实时性和精确性。

Liquefied alternative fuels offer great potential benefits in reducing exhaust emissions and improving fuel economy of automotive engines. In order to achieve the best performance of the engine running with such fuels, it is critical to have an appropriate fuel system. In the present work, a new electronically controlled common-rail injection system has been specially designed and tested for the direct injection of liquefied alternative fuels, since a conventional pump-line-injector injection system in the conventional diesel engine was not suitable for the purpose. Experimental work has been carried out to examine and improve matching of the fuel injection system on a new fuel injection pump test bench. The preliminary engine bench test has demonstrated that this arrangement meets the requirement for the operating characteristics of a fuel injection system in a direct injection diesel engine operating with dimethyl ether (DME).