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مکانیک::
ذرات دوده
Measurements of the total number of soot particles and soot volume fraction through the combustion process have been made in an IDI passenger car diesel.
The soot particles, whose characteristics have been described in the above two sections, form primarily from the carbon in the diesel fuel.
The time available for the formation of solid soot particles from a fraction of the fuel is in the order of milliseconds.
The resulting aerosol-dispersed solid-phase particles in a gas-can be characterized by the total amount of condensed phase (often expressed as the soot volume fraction, Fv, the volume of soot/total volume), the number of soot particles per unit volume (N), and the size of the particles (e.g.
convenient to consider N and Fv as the independent variables since they each relate to the " almost-separate " stages of soot particle generation (the source of N) and soot particle growth (the source of Fv).
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