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Optimization of a heat-integrated exhaust catalyst for CNG engines

Paper ID Volume ID Publish Year Pages File Format Full-Text
55471 47054 2012 8 PDF Available
Title
Optimization of a heat-integrated exhaust catalyst for CNG engines
Abstract

In this paper the optimization of a heat-integrated catalytic exhaust purification system for specific use in monovalent CNG vehicles is presented. The respective simulation results are based on a multiphase 1D model of the counter current heat exchanger with catalytic coating. For validation, stationary measurements obtained with a laboratory scale prototype are shown. Furthermore, a novel cold start approach, based on a bypass system, is introduced. As inflow conditions for the transient simulations, raw emission data from a monovalent CNG vehicle, performing a full drive cycle on a dynamometer test bench, was used. Based on this simulation setup, an optimized operation strategy of the bypass during cold start has been developed. Subsequently, the geometric parameters of the heat exchanger reactor have been refined, following an optimal design strategy.

Graphical abstractFigure optionsDownload full-size imageDownload high-quality image (113 K)Download as PowerPoint slideHighlights► Heat-integrated catalyst system for monovalent CNG vehicles. ► Low emission rapid start-up procedure under drive cycle conditions. ► Systematic design optimization.

Keywords
Automotive exhaust purification; Monovalent CNG vehicles; Heat integration; Optimal start-up control; Optimal design
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 188, Issue 1, 1 July 2012, Pages 113–120
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
Any Questions? feel free to contact us