Role of Analysis Led Design Approach in Diesel Engine-Based After-Treatment System

Abstract

Over the last decade, selective catalytic reduction (SCR) mechanism has proven to be a well-established commercial technique for control of NO_x emission, especially for diesel engines, which is applicable for wide range of operating conditions in various application segments such as light duty, midrange, heavy duty, and high horsepower. Hence nowadays, a significant amount of efforts is put forward for ensuring robust operation of SCR system in the extreme situation of design parametric space. In order to excel in this area, various options/concepts, critical parameter sensitivity, and optimization studies are assessed using numerical simulation tools as they offer a quick qualitative solution to meet tight customer timelines. The current trend is to meet the performance targets by making these designs compact and fastest delivery of the product in the market. Analysis Led design (ALD) provides the opportunity to predict the performance of the system at the concept phase and remove noises at the early phase of the product cycle. With time, ALD has also evolved to such an extent that the need for physical testing has been reduced significantly. In this chapter, we will understand the role of after-treatment (AT) system in industries and how ALD is supporting in making the AT more effective in terms of performance and cost. We will also go through some analysis and show some case studies and understand how they solve the real-world problems.