Driving cycle

Article summary

A driving cycle is a series of data points representing the speed of a vehicle versus time. Driving cycles are produced by different countries and organizations to assess the performance of vehicles in various ways, for example, fuel consumption, electric vehicle autonomy and polluting emissions. Fuel consumption and emission tests are performed on chassis dynamometers. Tailpipe emissions are collected and measured to indicate the performance of the vehicle. Another use for driving cycles is in vehicle simulations. For example, they are used in propulsion system simulations to predict performance of internal combustion engines, transmissions, electric drive systems, batteries, fuel cell systems, and similar components. Some driving cycles are derived theoretically, as in the European Union, whereas others are direct measurements of a representative driving pattern. There are two types of driving cycles: # Transient driving cycles involve many changes, representing the constant speed changes typical of on-road driving. # Modal driving cycles involve protracted periods at constant speeds. The American FTP-75, and the unofficial European Hyzem driving cycles are transient, whereas the Japanese 10-15 Mode and JC08 cycles are modal cycles.…

Key claims

1. publication date: 1968-10-14 — source: Wikipedia · confidence 0.95

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