Summary
The subject of rolling roads and chassis dynamometers is a very extensive one, worthy of a textbook in its own right. The application of these machines, at all but an elementary level, is very largely in the field of transient testing and the road load equation. However, the testing techniques employed have a great deal in common with those applicable to engine testing dynamometers, and almost the whole of the present book is relevant.
In this chapter, an attempt has been made to survey the whole range of apparatus that may be described by the general heading of rolling roads/chassis dynamometers, from the simple garage brake tester to complex and very costly climatic chambers and anechoic cells. The design of the associated test cells, vehicle restraint systems, driver communications and safety precautions have been discussed and problems of accuracy and calibration considered.
The subject of the building/dynamometer interface has been covered in some detail because errors discovered at installation are expensive to rectify.
Reference
1. Tire Rolling Resistance, Symposium, 122nd Meeting, Rubber Division, American Chemical Society, 1982.