Article,

Comparison of Two Different Heat-Integrated Exhaust Purification Devices for Monovalent CNG Engines

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Topics in Catalysis, 56 (1): 421--426 (May 1, 2013)
DOI: 10.1007/s11244-013-9990-8

Abstract

In this paper, two different heat-integrated reactor concepts for the exhaust aftertreatment of natural gas powered vehicles are presented. While one concept is based on previously published fully integrated systems, in the second one, an efficient metallic countercurrent heat exchanger is closely combined with a separate, catalytically coated ceramic honeycomb. For rapid cold start and for backpressure-reduced operation under high load conditions, both devices are equipped with an electric heater and a bypass system. The characteristic differences between both approaches will be demonstrated by drive cycle simulations.

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