Series Application of a Diesel Particulate Filter with a Ceria-Based Fuel-Borne Catalyst: Preliminary Conclusions after One Year of Service (2002)

<div class="htmlview paragraph">In May 2000, PSA Peugeot Citroën launched, the Peugeot 607 HDi (High pressure Direct Injection) luxury sedan, the first series-production diesel passenger vehicle equipped with a Diesel Particulate Filter (DPF). The elimination of diesel particulate emissions is achieved by sequential trapping followed by regeneration of the DPF, assisted by a Ceria-based Fuel-Borne Catalyst (Ceria-FBC).</div> <div class="htmlview paragraph">In order to ensure reliable and durable DPF regeneration under all driving conditions, including the most demanding such as prolonged periods of idling and low speed driving, active and integrated system approaches are used. This technology was subsequently transferred to the diesel versions of the Peugeot 406 and the newly-launched Peugeot 307 and Citroën C5.</div> <div class="htmlview paragraph">This paper presents the functional and technical characteristics of the Ceria-FBC to fulfil specification requirements. These characteristics have been developed and adapted for: <ol class="list nostyle"> <li class="list-item"> <span class="li-label">1.</span> <div class="htmlview paragraph">optimal vehicle integration;</div> </li> <li class="list-item"> <span class="li-label">2.</span> <div class="htmlview paragraph">requirements for health and environmental friendliness;</div> </li> <li class="list-item"> <span class="li-label">3.</span> <div class="htmlview paragraph">compatibility with filter materials and vehicle components;</div> </li> <li class="list-item"> <span class="li-label">4.</span> <div class="htmlview paragraph">long-term solubility and stability in diesel fuel;</div> </li> <li class="list-item"> <span class="li-label">5.</span> <div class="htmlview paragraph">temperature and time stability;</div> </li> <li class="list-item"> <span class="li-label">6.</span> <div class="htmlview paragraph">thermal evolution of viscosity compatible with typical automatic on-board dosing systems;</div> </li> <li class="list-item"> <span class="li-label">7.</span> <div class="htmlview paragraph">final customer acceptance;</div> </li> <li class="list-item"> <span class="li-label">8.</span> <div class="htmlview paragraph">sulfur tolerance.</div> </li> </ol> </div> <div class="htmlview paragraph">After more than one year of commercialization, feedback from the 100,000 + HDi vehicles in the field shows that the DPF demonstrates: <ul class="list disc"> <li class="list-item"><div class="htmlview paragraph">exceptionally high and durable filtration efficiency;</div> </li> <li class="list-item"><div class="htmlview paragraph">excellent regeneration behavior;</div> </li> <li class="list-item"><div class="htmlview paragraph">highly reliable and precise functioning of the Ceria-FBC on-board dosing system.</div> </li> </ul> </div> <div class="htmlview paragraph">These results have been confirmed by the German Automobile Club (ADAC) and the German Federal Environmental Agency (UBA) through joint evaluation over 80,000km of the Peugeot 607 HDi: the main conclusions are also reported in this paper.</div>