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In the present paper the catalytic properties of two different systems in the NOx reduction at the exhaust of a natural gas lean-burn engine are analysed. The proposed approach consists in using methane present in the exhaust as reducing agent. In particular, a sample of ferrierite zeolite modified with cobalt is compared with a platinum catalyst supported on gamma-Al2O3. Cobalt-ferrierite catalyst...
The present paper analyses in details the effects of natural gas (NG) composition variability, due to different NG sources, on engine performance and emissions. The application of this study is to give indications useful for designing, realising, and homologation of heavy duty engines fuelled with NG. The effects of fuel properties have been investigated by experimental tests carried out on heavy...
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