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Development of a New DPNR Catalyst
Technical Paper
2004-01-0578
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
We, at Toyota, have been working to develop a new DPNR (Diesel Particulate-NOx Reduction) system to decrease both PM and NOx emissions by combining the NOx storage-reduction catalyst for direct injection gasoline engines with the most advanced engine control technologies.
The purpose of the DPNR catalyst is to decrease PM and NOx in order to purify automotive exhaust gas. To reduce PM emissions, the PM trapping rate and PM oxidizing performance must be improved. Since the deposition of PM increases the pressure drop across the catalytic converter, it should also be suppressed.
To attain these objectives, we have developed a new DPNR catalyst by the adoption of a new porous substrate structure and the improvement of the catalyst coating technique. The new DPNR catalyst will be mounted on the Avensis for commercial use in the European market.
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Citation
Mizuno, T. and Suzuki, J., "Development of a New DPNR Catalyst," SAE Technical Paper 2004-01-0578, 2004, https://doi.org/10.4271/2004-01-0578.Also In
Diesel Emissions on CD-ROM from the SAE 2004 World Congress
Number: SP-1835CD; Published: 2004-03-08
Number: SP-1835CD; Published: 2004-03-08