A Source Dilution Sampling System for Characterization of Engine Emissions under Transient or Steady-State Operation

Figures & data

FIG. 1 Diagram of source dilution sampling system and engine bench setup.

FIG. 2 Diagram of sampling Train Setups 1 and 2.

FIG. 3 High volume sampler Train Setup 3 and gaseous trains.

FIG. 4 Concentrations of (a) NO_x and (b) CO₂ from the sampling trains and regulatory certification system.

FIG. 5 PM size distributions with (a) no secondary dilution and (b) 1:1 secondary dilution.

FIG. 6 (a) Six pack capability study and (b) Capability histogram of the variation across the samplers with the target value set to the average measurement.

FIG. 7 (a) Six pack capability study and (b) Capability histogram of the variation across the samplers with the target value set to the average regulatory certification system measurement.