Browse Publications Technical Papers 2018-01-1885
2018-10-05

Investigations of the Measurement Layout for Brake Particle Emissions 2018-01-1885

Non-exhaust emissions in general and brake particle emissions in particular have become very relevant during the last years. Even if many investigations and efforts are under progress, no common test standards exist so far. Many mechanisms and possible impacts are not fully understood either. Hence, the authors continued their investigations by using an already refined and proved test setup, which is the base for further characterizations and enhancements. In a first step, an additional sampling point in the exhaust duct is considered. Unlike to the original location, which takes into account a certain duct length for dilution purposes, this new location is situated quite close to the brake. With these two sampling points, investigations of the impact on particle mass and particle number concentration are carried out. Additional studies deal with the variation of the cooling air flow rate as well as the mass moment of inertia and its impact on particle mass. Those results are compared to the corresponding tribological characteristics as well. Finally, a brief outlook is given for the next steps of brake particle emission characterization.

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