There is abundant worldwide research into combustion engine applications for tyre pyrolysis oil (TPO). However, many of these studies demonstrate conflicting or ambiguous results, so although the huge number of used tyres promises good availability for TPO, its role as fuel for transport applications is still uncertain. This review´s goal is to clarify the case for TPO as transport fuel by means of a critical, wide-ranging and updated review of TPO's engine applications. The work gathers, collates and analyses the results of over 200 influential original research papers, aiming to answer the governing research questions related to TPO production and quality, post-processing and quality improvement and its final end-use engine validation. The work re-evaluates the environmental aspects of TPO technology, setting it against the latest backdrop of growing climate change concern and the urgency to find alternative fuels. The hard economics of TPO are also addressed, for example, assessing other end-of-life tyre management routes and competing fuel alternatives.

The critical discussion on the key issues, including the most relevant drivers and boundaries, points towards TPO's use as a fuel component in marine, off-road and heavy-duty road applications. The results indicate that state-of-the-art production methods yield fuel that could be used directly in bunkering chains for marine transport as low-sulphur fuel oil. Discussion reveals that automotive applications are limited to blends not exceeding 10% tyre pyrolytic oil: sulphur and polyaromatic hydrocarbons contents and particulate emissions are the main constraints. Pyrolysis process efficiency is high and feedstock for TPO is both available and flexible. Waste tyre-derived pyrolytic oils could function as a supplementary solution to biofuels, blended to take advantage of their complementary properties.

The particular added value of this review is that it bridges the latest knowledge from several domains related to TPO fuel: industrial management, process chemistry, fuel science and combustion/engine research. The resultant analysis is expressed in terms that are accessible to all those domains. It underlines how studies from an individual domain perspective fail to produce the holistic view. The review creates a route towards modern multidisciplinary research supporting TPO´s role in global transition to circular economy.

全球范围内对轮胎热解油（TPO）的内燃机应用进行了大量研究。但是，许多研究表明结果相互矛盾或模棱两可，因此，尽管大量废旧轮胎有望为TPO提供良好的可用性，但仍不确定其作为运输应用燃料的作用。这次审查的目的是通过对TPO发动机应用的关键，广泛和最新的审查来阐明TPO作为运输燃料的理由。这项工作收集，整理和分析了200余篇有影响力的原始研究论文的结果，旨在回答与TPO生产和质量，后处理和质量改进及其最终最终用途发动机验证有关的主要研究问题。这项工作重新评估了TPO技术的环境方面，将其置于对气候变化的关注日益增加以及寻找替代燃料的紧迫性的最新背景下。TPO的严格经济学也得到了解决，例如，评估了其他报废轮胎管理路线和竞争性燃料替代品。

关于关键问题（包括最相关的驱动程序和界限）的关键讨论指出了TPO在海洋，越野和重载道路应用中用作燃料成分的情况。结果表明，最新的生产方法所产生的燃料可以作为低硫燃料油直接用于海上加油链。讨论表明，汽车应用仅限于混合比例不超过10％的轮胎热解油：硫和聚芳烃的含量以及颗粒物的排放是主要限制因素。热解工艺效率高，并且TPO原料既可用又灵活。废轮胎衍生的热解油可以作为生物燃料的补充解决方案，可以混合利用它们的互补特性。

此次审查的特别增值之处在于，它桥接了与TPO燃料相关的多个领域的最新知识：工业管理，过程化学，燃料科学和燃烧/发动机研究。结果分析用所有这些域都可以访问的术语表示。它强调了从单个领域的角度进行研究如何无法产生整体观点。该评论为通向TPO在全球向循环经济过渡中的作用的现代多学科研究开辟了一条道路。