Disposal of waste plastic accumulated in landfills is critical from the environmental perspective. The energy embodied in waste plastic could be recovered by catalytic pyrolysis as waste plastic oil (WPO) which could be recycled as a fuel for diesel engines. This method presents a sustainable solution for (a) waste plastic management as the gap between global plastic production and waste plastic generation keeps widening, (b) replacing diesel partially or wholly which is currently extracted from fast depleting fossil crude oil. The present work attempts to bring together all the investigations pertaining to WPO usage either (a) as a neat fuel or (b) as a blend component with diesel or (c) with an oxygenated additive till date in diesel engines and reviews the engine’s performance, emission and combustion characteristics. Majority of the works utilised WPO extracted from mixed waste plastic as a feedstock using a laboratory scale batch reactor via catalytic pyrolysis. Silica, Alumina, ZSM-5 and Kaolin were used as catalysts. This method often yielded up to 80% of liquid WPO. This oil had a slightly lower cetane number than fossil diesel and hence produced longer ignition delays and higher heat releases during premixed combustion phasing. NO_x emissions were higher with WPO which is addressed by modifying the injection timing or by means of EGR. Contrary to popular belief, smoke emissions are mostly lower with WPO and could be brought down further to Euro levels by the use of oxygenated additives. In summary, WPO was found to run smoothly in diesel engines and more work is necessary to study the PM characterisation and long-term durability of the engine when fueled with this oil.

从环境角度看，处置堆积在垃圾填埋场中的废塑料至关重要。废塑料中包含的能量可以通过催化热解作为废塑料油（WPO）回收，可以作为柴油发动机的燃料进行回收。这种方法为（a）废塑料管理提供了一种可持续的解决方案，因为全球塑料生产和废塑料生产之间的差距不断扩大，（b）部分或全部替代目前从快速消耗的化石原油中提取的柴油。本工作试图将有关WPO使用的所有调查汇总到一起（a）作为纯燃料或（b）作为与柴油的混合组分，或（c）与含氧添加剂一起使用，直到柴油发动机为止，并回顾发动机的性能。 ，排放和燃烧特性。大部分工作是利用实验室规模的分批反应器通过催化热解从混合废塑料中提取的WPO作为原料。二氧化硅，氧化铝，ZSM-5和高岭土用作催化剂。这种方法通常可产生高达80％的液体WPO。该油的十六烷值略低于化石柴油，因此在预混合燃烧定相过程中产生了更长的点火延迟和更高的热量释放。没有_X排放量高于WPO被寻址通过修改喷射正时或通过EGR的装置。与普遍的看法相反，使用WPO时，烟雾排放大部分较低，并且可以通过使用含氧添加剂而将其进一步降低至欧元水平。总而言之，发现WPO在柴油发动机中可以平稳运行，并且需要更多的工作来研究以汽油为燃料的PM特性和发动机的长期耐久性。