The first edition of this book appeared in 1995, and has since gained widespread acceptance by practising test engineers on both sides of the atlantic. The purpose of this book is to bring together in one volume the large and scattered body of information on the theory and practice of engine testing and test plant design to which any engineer responsible for work of this kind must have access. the authors have long experience of all aspects of engine testing and have become aware that much of the essentially eclectic knowledge they had amassed was not available in any readily accessible form and indeed was in danger of being lost to the current generation of young engineers. Since publication three years ago, there has been considerable 'feedback', and the authors have become aware that amplification of several topics was desirable. Particular areas where the treatment has been expanded include: * computer control and data logging of test procedures * water supply and treatment * combustion air, supply, treatment, effects on performance * drive shaft design (a subject clearly of wide concern) * exhaust emissions and legislation: an update of this rapidly developing subject In addition a whole new section has been devoted to chassis dynamomenters and test methods for complete vehicles.