constant-volume sampling

constant-volume sampling
An exhaust-emissions measuring technique in which the exhaust gases produced by a vehicle's engine are collected as it is driven through a test sequence of accelerations, decelerations, and cruise modes on a chassis dynamometer. A quantity of air is added to the exhaust gases until a specific volume (the same for all cars) is obtained. Concentrations of pollutants in the total sample are then analyzed for determination of their actual mass.

Dictionary of automotive terms. 2015.

Игры ⚽ Поможем написать курсовую

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