在压燃直喷式柴油发动机中喷入柴油、生物柴油和汽油,以减少氮氧化物和烟尘的排放

S. Sendilvelan, Kannayiram Gomathi, Larissa Sassykova, Muthuswamy Prabhahar
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引用次数: 0

摘要

内燃机对现代社会的发展至关重要。火花点火式发动机(SI)和压燃式发动机(CI)目前使用汽油和柴油作为主要燃料。燃烧这些燃料会向大气中排放大量污染物,造成环境问题。内燃(IC)发动机是公认的环境空气污染的重要来源。发动机的燃料氧化过程不仅产生有用的动力,还会产生大量的污染物排放,如一氧化碳 (CO)、未燃碳氢化合物 (HC)、氧化氮 (NOx) 和颗粒物 (PM)。在开发新的燃烧过程时,必须考虑到:稀薄的均质空气-燃料混合物、增加压缩比、完全燃烧和瞬时燃烧,所有这些都会导致喷嘴喷射压缩点火(PICI),这是一种高效、清洁的燃烧方法。本研究的目标是以先导喷射(PI)作为燃烧激活剂,对预混合充气压缩点火(PCCI)模式下的 PICI 压缩过程进行实验研究。研究发现,与传统模式相比,PICI 模式产生的废气温度较低。在以生物柴油和汽油作为次燃料和主燃料的 PICI 模式下,废气温度低于以其他燃料组合作为次燃料和主燃料的 PICI 模式。在 PICI 模式下,所有燃料在较高负荷下的 HC 排放都会减少。在生物柴油常规模式下,HC 排放量比其他模式最小。在所有运行模式下,比耗油量都随着负荷的增加而减少。柴油和汽油分别作为主要燃料和次要燃料,其比耗油量最低。PICI 模式的燃料用量低于正常模式。
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PORT INJECTION OF DIESEL, BIODIESEL, AND PETROL IN A COMPRESSION IGNITION DIRECT INJECTION DIESEL ENGINE TO MITIGATE NITROGEN OXIDES AND SOOT EMISSIONS
The internal combustion engine is critical to modern society’s development. Spark ignition engine (SI) and compression ignition engine (CI) now use gasoline and diesel as their primary fuels. As a result of burning these fuels, significant amounts of pollutants are released into the atmosphere, resulting in environmental issues. Internal combustion (IC) engines are widely acknowledged as a significant source of environmental air pollution. The engine’s fuel oxidation process not only produces useful power, but also produces significant amounts of pollutant emissions such as carbon monoxide (CO), unburned hydrocarbons (HC), nitrogen oxide (NOx ), and particulate matter (PM). When developing a new combustion process, consideration must be given to: lean homogeneous air-fuel mixture, increased compression ratio, and total and instantaneous combustion, all of which result in Port Injection Compression Ignition (PICI), that is a highly efficient and clean method of combustion. The goal of this research is to conduct an experimental investigation of PICI process of compression in a Premixed Charge Compression Ignition (PCCI) mode with Pilot Injection (PI) as the combustion activator. It was found that when compared to the conventional mode, the PICI mode produces cooler exhaust gas temperatures. Temperatures were lower in the PICI mode with biodiesel and petrol as secondary and primary fuels than in the PICI mode with other fuel combinations. In the PICI mode, the HC emission decreases at higher load with all fuels. In the biodiesel conventional mode, HC emission is minimum than in other modes. For all modes of operation, the specific fuel consumption has reduced with load. Diesel and gasoline have the lowest specific fuel consumption as primary and secondary fuels, respectively. Fuel usage in the PICI mode is lower than in the normal mode.
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来源期刊
Journal of Chemical Technology and Metallurgy
Journal of Chemical Technology and Metallurgy Engineering-Industrial and Manufacturing Engineering
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1.40
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