Diesel Emission Control Technology 2003 in Review

Chemical characterization of particulate emissions from diesel engines: A review

“…First, there is a concerted effort from the engineering side to reduce tailpipe emissions. This includes the introduction of high pressure, common rail, direct injection systems (Guerrassi & Dupraz, 1998;Stumpp & Ricco, 1996), the use of shaped and multiple pulse fuel injection strategies (Park, Kook, & Bae, 2004), and the development of NO x and PM aftertreatment devices (Johnson, 2003). Second, there has been a parallel rapid growth in the investigation of diesel emissions (Mohr, Lehmann, & Margaria, 2003a, the development of new methods to sample engine exhaust, and the advancement of instrumentation used to characterize the PM (Burtscher, 2005;Kittelson, 1998).…”

Measurement and prediction of filtration efficiency evolution of soot loaded diesel particulate filters

“…Diesel particulate filters (DPFs) are being extensively used in diesel after-treatment systems for removal of particulate matter from the exhaust gas (Johnson, 2003(Johnson, , 2004Twigg, 2007). While filters with different designs (foam, radial flow, etc.)…”

Air management in a diesel engine using fuzzy control techniques

“…From the previous paragraphs, it can be seen that a trade-off of NO x against inert particles must occur: as the conditions that reduce particle emission also increase the emission of NO x [16]. The more air that is recirculated to the intake manifold, the less fresh air enters; and so for a given amount of fuel, AFR will lower the increase in the emission of particles, while NO X emission is also reduced.…”

“…There are several options for improving the air management system. Each depends on different aspects and various mechanical, chemical, or technological improvements described in works such as [6,16] or [22], where improvements in various components produce a reduction in emissions. However, from the control-theory systems point of view, an improvement in air management can be achieved using two types of approach.…”