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Potential of a Dual Fuel DI Diesel Engine Fuelled with Jatropha Curcas L. Oil and Producing Gas Derived from Biomass

机译：双燃料DI柴油机的潜力燃料，用麻风树CURCAS L.油和生产生物质的生产气体

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High energy demand and environmental pollution leads to seeking of new, renewable and clean energy as biofuel and biomass. These fuels are abundant in tropical areas and agricultural-economic-based countries. Among various crops which are used for biofuel, Jatropha Curcas L. Oil (JO) is more beneficial and attractive as it is non-edible which is not competitive with food demand. In agricultural sector, the biomass waste especially from rice production such as rice husk is a tremendous resource in Cambodia. The combination of the use of biomass from rice husk (RH) and Jatropha Cake (JC) from the JO production in the gasification can produce more energy for the electricity production especially in the remote and rural area. In previous research, some researchers have been investigated on the use of JO in blending ratio, heated-neat condition and dual fuel combustion of diesel and bio-digested biogas. The use of crude-neat JO and producing gas from the gasification has never conducting yet. In this study, mixed combustion of dual fuel of neat JO and producing biogas (BG) in single cylinder, direct injection compression ignition engine was conducted at fixed injection timing θ_j = 17°bTDC, with two mixing ratios of producing gas r_(pg) = 25 and 50% in energy base as JOHBG25 and JOHBG50 at low, medium and high loads. The producing gas which composes of hydrogen, carbon mono-oxide, methane, carbon dioxide, nitrogen and oxygen from the gasification was replaced by the simulated gas and was fed from gas cylinder. In previous experiments, pressure histories were recorded and engine outputs and combustion characteristics such as thermal efficiency, specific energy consumption, rate of heat release, maximum pressure-rise rate, maximum heat-release rate were recorded and analyzed, and exhaust gas emissions were measured. From the results, at low load, JOHBG25 is better for its thermal efficiency. Both dual fuels JOHBG25 and 50 produced lower maximum pressure-rise rate, compared to JO and diesel with similar brake specific energy consumption (BSEC). In all loads, JOHBG25 and JOHBG50 produce higher CO and THC but less NO_x, opacity and smoke compared to JO and diesel.
机译：高能源需求和环境污染导致寻求新的，可再生和清洁能源作为生物燃料和生物量。这些燃料在热带地区和基于农业 - 经济的国家浓密。在用于生物燃料的各种作物中，麻风树Curcas L.油（jo）更有益和吸引，因为它是不可食用的，这是不竞争的粮食需求。在农业部门，尤其是稻壳等水稻生产的生物质废物是柬埔寨的巨大资源。从稻壳（RH）和Joatropha蛋糕（JC）中使用的生物质的组合可以从GE的GEA生产中产生更多的能量，特别是在远程和农村地区的电力生产。在以前的研究中，已经研究了一些研究人员对柴油和生物消化沼气的混合比，加热整洁和双燃料燃烧的使用。使用原油Jo并从气化生产的气体尚未进行。在本研究中，在固定喷射正时θ_j= 17°BTDC的固定喷射正时θ_j= 17°BTDC中进行直接喷射压缩点火发动机的双缸双燃料的混合燃烧并在单筒中产生沼气（BG），具有两种混合比的制造气体R_（PG）的混合比在低，中等和高负荷下，能量基础= 25和50％的能量基础和johbg50。由气化的氢气，碳单氧化物，甲烷，二氧化碳，氮和氧气组成的生产气体被模拟气体取代，并从气瓶中加入气瓶。在先前的实验中，记录了压力历史，并记录了发动机输出和发动机输出和燃烧特性，如热效率，散热，热释放速率，最大压力率，最大释放速率，并测量了废气排放。从结果，在低负荷下，尚未效率更好。与Jo和柴油相比，双燃料joxbg25和50产生更低的最大压力增加率，具有类似的制动器特定能量消耗（BSEC）。在所有负载中，尚未与JO和柴油相比产生更高的CO和THC，但不少于NO_X，不透明度和烟雾。

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