MTZ industrial

, Volume 3, Issue 1, pp 62–70 | Cite as

Aftertreatment in a Pre-turbocharger Position: Size and Fuel Consumption Advantage for Tier 4

  • Claus Brüstle
  • Dean Tomazic
  • Michael Franke
Research Large-Bore Diesel Engines

As the 2014 implementation of EPA Tier 4 fast approaches in the USA, manufacturers of large bore diesel engines face a dilemma. The stringent limits set by Tier 4 legislation require large, heavy and expensive emissions control systems but severe constraints on installation space, weight and cost exist for these systems. A viable solution is to place catalysts and filters upstream of the turbocharger.

1 Introduction

Based on robust metal catalyst substrates, benefits can be realised by the application of exhaust aftertreatment technologies ahead of the turbocharger turbine on large-bore diesel engines. The higher temperatures upstream of the turbocharger yield faster light-off of the catalysts, leading to a reduction in pollutants at lower engine power levels. The higher pressures and the higher temperatures make the catalyst system more efficient and allow significant downsizing potential. Placing the flow restriction associated with the aftertreatment system up-stream of the...


Selective Catalytic Reduction Flow Restriction Diesel Particulate Filter Specific Fuel Consumption Selective Catalytic Reduction Catalyst 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Fachmedien Wiesbaden 2013

Authors and Affiliations

  • Claus Brüstle
    • 1
  • Dean Tomazic
    • 2
  • Michael Franke
    • 2
  1. 1.Emitec, Inc.Rochester HillsUSA
  2. 2.FEV, Inc.Auburn HillsUSA

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