Due to their biodegradability, renewability and superior lubrication performance compared to commercial fossil lubricants, vegetable oils are becoming substitutes for petroleum-based lubricants in different sectors, especially in the automotive industry. Biolubricants covers feedstocks, physicochemical properties, process to chemically alter raw oils from feedstocks, lubrication characteristics, as well as the additives to enhance properties.

In the past decades, significant advances in tribology have been made as engineers strive to develop more reliable and high performance products. The advancements are mainly driven by the evolution of computational techniques and experimental characterization that leads to a thorough understanding of tribological process on both macro- and microscales. The purpose of this book is to present recent progress of researchers on the hydrodynamic lubrication analysis and the lubrication tests for biodegradable lubricants.

Used lubricating oil is a valuable resource. This book examines recycling processes for a range of products with different properties and different criteria. It also compares the various recycling methods and resulting products to conventional products obtained from original refining processes. The reviews, data, and comparisons provided by the authors allow readers to identify which processes are likely to produce a product with specific properties, and enable them to combine this with an analysis of the economic data to identify attractive oil recycling propositions.

Covering energy-saving technologies and how these are incorporated into component design, this book is relevant to many industries, including automotive engineering, and discusses the topical issue of sustainability in industry. This book details recent fundamental developments in the field of tribology in industrial systems. Tribology has advanced significantly in recent years. Tribological performance depends on external parameters such as contact pressure at the interface, system temperature, relative speed between bodies and contact behaviour. Through ensuring that mechanisms work in an energy-efficient manner and minimizing wear, engineers should seek to implement the study of tribology to improve the life of machinery within industry. Essential to the study of component design and condition monitoring, the book touches upon topics such as gears, bearings and clutches. Additionally, it discusses tribology’s relation to Industry 4.0 and incorporates the results from cutting-edge research. Industrial Tribology: Sustainable Machinery and Industry 4.0 will be of interest to all engineers working in industry and involved in mechanical engineering, material engineering, mechanisms and component design and automotive engineering.