Automotive Emission Control by Guy B. Marin (Eds.)

By Guy B. Marin (Eds.)

This quantity on automobile Emission regulate emphasises the position of chemical engineering in car emission keep watch over. truly the advance of mathematical versions describing the various features of the converter(s), in addition to their interplay, has been and nonetheless is important. all of the contributions advocates the implementation of the latter, mixed with experimental validation, instead of enticing into complex experimental courses. *Provides unique reviews*Presents prime chemical engineers as authors*Reviews cutting-edge advancements

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A lot of this work is published in the open literature, however, there is a limit to what industry will publish, in order to maintain a competitive advantage. In particular, kinetic equations and especially kinetic parameters are generally SIMULATION OF AUTOMOTIVE EMISSION CONTROL SYSTEMS 49 regarded as proprietary information and hence are rarely seen in published work. This chapter discusses both the development of models and their application. One way of organising this chapter would be to discuss model development first and then go on to consider the applications.

Jpn. 110, 126 (2002). , and Kasahara, K. Catal. Today 27, 63 (1996). , Appl. Catal. B (in press). , and Shinjoh, H. J. Chem. Eng. Jpn. 39, 437 (2006). , Appl. Catal. B (in press). Toops, T. , Smith, D. , and Partridge, W. P. Catal. Today 114, 112 (2006). , and Roth, J. R. H. Appl. Catal. B 11, 65 (1996). , and Sugiura, M. Appl. Catal. B 30, 459 (2001). , and Sugiura, M. Appl. Catal. B 53, 1 (2004). , SAE Technical Paper 850129 (1985). , and Hattori, T. Phy. Scr. T 115, 813 (2005). PLATE 1. Photographs of wash-coat layer on monolithic substrate with square cells (left) and hexagonal cells (right) (for Black and White version, see page 39).

Since the catalyst is hotter, the size of the breakthrough at 100s is reduced. This example illustrates how a better understanding of the system can be gained by examining parameters predicted by the model. The second example considers changing the engine calibration to reduce engine out HC. Since a large portion of post-catalyst HC emissions is released before the catalyst lights off, reducing HC output at the beginning of the test can be very beneficial. Figure 6 shows the predicted effect of reducing engine out HC to one-half and one-third of the measured values.

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