API CJ-4: Diesel Oil Category for Pre-2007 Engines and New Low Emission Engines Using Cooled Exhaust Gas Recirculation and Diesel Particulate Filters

2007 ◽  
Author(s):  
J. A. Mc Geehan ◽  
J. Moritz ◽  
G. Shank ◽  
S. Kennedy ◽  
D. Stehouwer ◽  
...  
Keyword(s):  
Exhaust Gas Recirculation ◽  
Diesel Oil ◽  
Exhaust Gas ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Low Emission ◽  
Gas Recirculation

API CJ-4: Diesel Oil Category for Both Legacy Engines and Low Emission Engines Using Diesel Particulate Filters

2006 ◽  
Author(s):  
J. A. Mc Geehan ◽  
J. Moritz ◽  
G. Shank ◽  
S. Kennedy ◽  
D. Stehouwer ◽  
...  
Keyword(s):  
Diesel Oil ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters ◽  
Low Emission

1D and 3D CFD Simulation of Exhaust-Gas Aftertreatment Devices: Parameter Optimization via Genetic Algorithm

2004 ◽  
Author(s):  
R. Wanker ◽  
J. C. Wurzenberger ◽  
D. Higbie
Keyword(s):  
Cfd Simulation ◽  
Fine Tuning ◽  
3D Simulation ◽  
Design Stage ◽  
Exhaust Gas ◽  
Catalytic Converters ◽  
Simulation Code ◽  
Diesel Particulate ◽  
Diesel Particulate Filters ◽  
Particulate Filters

Future limits on emissions for both gasoline and Diesel engines require adequate and advanced systems for the aftertreatment of the exhaust gas. Computer models as a complementary tool to experimental investigations are indispensable to design reliable after-treatment devices such as catalytic converters and Diesel particulate filters. Therefore, the objective of this contribution is to present an integrated 1D to 3D simulation workflow of catalytic converters (Three-Way-Catalyst, Diesel Oxidation Catalyst, Selective Catalytic Reduction Catalyst, ...) and Diesel particulate filters. The parameters or sets of parameters are obtained by a fast and efficient 1D-approach of BOOST. They are readily transferable to the 3D simulation code FIRE to investigate detailed aspects such as spatial distribution of temperatures or heat losses. Thus, identical models predicting flow, energy and conversion of species of the exhaust gas were employed to both the 1D gas exchange/cycle and the 3D CFD simulation code. This approach allows to carry out a basic analysis and to define first layouts for the exhaust system. Characteristic parameters of this first design stage are used for the multi-dimensional simulation to evaluate the overall performance including fine tuning of aftertreatment systems.

Reduction of NOx by EGR in a Compact Combuster

1974 ◽  
Vol 96 (3) ◽  
pp. 235-239 ◽  
Author(s):  
H. R. Hazard
Keyword(s):  
Rankine Cycle ◽  
Exhaust Gas Recirculation ◽  
The Other ◽  
Nox Emission ◽  
Exhaust Gas ◽  
Excess Air ◽  
Emission Standards ◽  
Low Emission ◽  
Reduction Of Nox ◽  
Gas Recirculation

The effect of EGR (Exhaust Gas Recirculation) on the emission of NOx, CO, and HC from two compact, low-emission burners sized for use in automotive Rankine-cycle engines was studied experimentally. One burner was a lean-primary design, and the other was a rich-primary design. Both had been developed to meet 1976 Federal Emission Standards for automobiles. It was shown that EGR resulted in significant reduction of NOx emission from both burners, with negligible effect upon emission of HC and CO. The effect of EGR was additive to the effect of excess air, staged air admission, and wall cooling.

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