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An Engine Test to Assess the Effect of Fuels and Lubricating Oils on Soot Loading of Diesel Particulate Filters
ISSN: 0148-7191, e-ISSN: 2688-3627
Published June 15, 2009 by SAE International in United States
Annotation ability available
A test procedure was set up in our laboratories to evaluate the propensity of fuels and lubricating oils towards the soot accumulation in Diesel Particulate Filters. The experimental work was carried out with the use of a passenger car diesel engine, retrofitted with an aftertreatment system composed by an oxidation catalyst and a DPF.
The soot propensity was evaluated by means of repeated measurements of differential exhaust backpressure gradient, during a running period at mid load and speed. The specific fuel consumption gradient was also measured to find a correlation between both the variables. After each soot loading period, a burning off period at full load was operated for the purpose of filter regeneration.
A two-phase experiment was undertaken to assess repeatability and discrimination capability of the test procedure.
During the first experimental phase, repeated tests were conducted on a fuel matrix containing some surrogate fuels. The results supported the conclusion that the soot loading test is characterized by good repeatability and very good discrimination capacity towards the fuel variable. Among the parameters that characterize the fuel matrix, the effects of Cetane Number and aromatic components were clearly pointed out.
During the second experimental phase, the soot propensity of different base oils was evaluated by means of repeated tests with use of different oils and a single fuel. Due to a moderate oil consumption level, the discriminating capacity of the soot loading test towards the oil variable revealed to be remarkably lower than the fuel variable, even in presence of good repeatability. In any case, the positive effect of synthetic basestocks emerged and was statistically validated.
During the whole experimentation, corresponding to an accumulated running period of 172 hours, the oil consumption remained quite limited and constant, which, along with the use of oils characterized by low saps technology, provided limited DPF weight increase but evident exhaust backpressure increase due to ash accumulation, probably enhanced by a slight downsizing of DPF.
|Technical Paper||Design Optimization of Non-Catalyzed DPF from Viewpoint of Back Pressure in Ash loading State|
|Ground Vehicle Standard||Physical and Chemical Properties of Engine Oils|
|Technical Paper||Automotive Diesel Engines-Fuel Composition vs Particulates|
CitationManni, M. and Pedicillo, A., "An Engine Test to Assess the Effect of Fuels and Lubricating Oils on Soot Loading of Diesel Particulate Filters," SAE Technical Paper 2009-01-1871, 2009, https://doi.org/10.4271/2009-01-1871.
- Manni, Pedicillo, Massara, P. Piero Del “An Experimental Evaluation of the Impact of Lubricating Oils and Fuels on Diesel Particulate Filters” SAE 2007-01-1925 /JSAE 20077277, JSAE Powertrain & Fluid Systems - Kyoto, Japan 2007
- Manni, Pedicillo, Bazzano “A Study of Lubricating Oil Impact on Diesel Particulate Filters by Means of Accelerated Engine Tests” SAE 2006-01-3416 , F&P Meeting, Toronto, Canada 2006
- Eastwood “Critical topics in Exhaust Gas Aftertreatment” RSP edition Baldock Hertfordshire GB 2000
- Manni Mattei Fattori Gommellini “Impact of Engine Oil on Exhaust Emissions from Diesel Vehicles” 1996 Agelfi Symposium Strasbourg
- Manni, Florio, Gommellini “An Investigation on the Reduction of Lubricating Oil Impact on Diesel Exhaust Emissions” SAE 972956 , F&L Meeting, Tulsa Oklahoma 1997
- Benda, Plomer, Reboul “Polyalphaolephines: the Base Fluids for Modern Heavy Duty Diesel Oils” TAE Symposium Esslingen, Germany 1996
- Li, Xiaobin Chippior, Gulder “Effects of Cetane-Enhancing Additives and Ignition Quality on Diesel Engine Emissions” SAE 972968 , F&L Meeting, Tulsa Oklahoma 1997
- Beatrice, Bertoli, D’Alessio, Lazzaro, Massoli, Moccia “Characterization of the sooting tendency of diesel fuels by shock tube and engine experiments” SAE 2001-24-0040
- Kidoguchi, Miwa, Yang “Effects of Fuel Properties on Combustion and Emission Characteristics of a Direct-Injection Diesel Engine” SAE 2000-01-1851
- Azetsu, Sato, Wakisaka “Effects of Aromatic Components in Fuel on Flame Temperature and Soot Formation in Intermittent Spray Combustion” SAE 2003-01-1913
- Nakakita, Ban, Takasu, Hotta, Inagaki, Weissman “Effect of Hydrocarbon Molecular Structure in Diesel Fuel on In-Cylinder Soot Formation and Exhaust Emissions” SAE 2003-01-1914
- Tsurutani, Takei, Fujimoto, Matsudaira, Kumamoto “The Effects of Fuel Properties and Oxygenates on Diesel Exhaust Emissions” SAE 952349
- Miyamoto Igawa Shibuya Arai Esmilaire “Influence of the Molecular Structure of Hydrocarbon Fuels on Diesel Exhaust Emissions” SAE 940676
- Darcy “Improvement of DPF Control Strategies using a Quasi 3D DPF Model” SAE 2008-01-1753 F&L Meeting 2008
- Andersson, Preston, Brett, Warrens “Lubricant Composition Impact on the Emissions From a European Heavy-Duty Diesel Engine Equipped With a Diesel Particulate Filter” SAE 2004-01-3012
- Massart “Chemiometrics: a textbook” Elsevier 1996