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(a) Transient measurements of total particle number concentration in diesel engine exhaust measured with a CPC after transition from a stabilized idle condition to rated power @ 2600 rpm. (b) Particle size distributions measured with SMPS after transition from a stabilized idle condition to rated power @2600 rpm and measured at 5–6 min intervals after the transition.
Adapted with permission (Kittelson & Khalek, 1999).
