Passive Regeneration Response Characteristics of a DPF System

2013-01-0520

04/08/2013

Event
SAE 2013 World Congress & Exhibition
Authors Abstract
Content
This study investigates the passive regeneration behavior of diesel particulate filters (DPFS) with various PGM loadings under different engine operating conditions. Four wall-flow DPFs are used; one uncoated and three wash-coated with low, medium, and high PGM loadings, with and without an upstream diesel oxidation catalyst (DOC). DPFs with variable pre-soot loads are evaluated at two steady state temperatures (300°C and 400°C), as well as across three levels of transients based on the 13-mode ESC cycle. Passive regeneration rates are calculated based on pre and post soot gravimetric measurements along with accumulated soot mass rates for specified exhaust mass flow rates and temperatures. Results illustrate the effect of temperature, NO₂ content, and soot loading on passive regeneration without upstream DOCs or DPF wash coatings. Passive regeneration rates are quantified across several engine operating conditions, comparing sensitivities and providing calibration inputs for backpressure response modeling, as demonstrated with GT Power.
Meta TagsDetails
DOI
https://doi.org/10.4271/2013-01-0520
Pages
9
Citation
Kotrba, A., Gardner, T., Bai, L., and Yetkin, A., "Passive Regeneration Response Characteristics of a DPF System," SAE Technical Paper 2013-01-0520, 2013, https://doi.org/10.4271/2013-01-0520.
Additional Details
Publisher
Published
Apr 8, 2013
Product Code
2013-01-0520
Content Type
Technical Paper
Language
English