Title
Fuel penalty comparison for (Electrically) heated catalyst technology
Author
Kessels, J.T.B.A.
Foster, D.L.
Bleuanus, W.A.J.
TNO Industrie en Techniek
Publication year
2010
Abstract
The conversion efficiency of three way catalytic converters is mainly defined by the temperature range wherein they are operating. Traditionally, ignition retard has been used to reduce the light-off time of the catalyst. This is however associated with a fuel penalty. With increasing vehicle electrification, electrically heating facilities present an alternative, especially for hybrid vehicles. Nevertheless, system complexity of hybrid vehicles prevents engineers to evaluate possible heating technologies and their corresponding fuel penalty with respect to traditional solutions. This paper evaluates the application of an electrically heated catalyst on a hybrid vehicle equipped with a Natural Gas (NG) engine. The effect of heating power on light-off time and fuel penalty is determined, using analysis techniques emerging from integrated powertrain control. By means of a case study, the importance of an integral approach is explained by comparing the fuel penalty and conversion efficiency improvement of electric heating with that of ignition retard. In this process, a mix of simulation and test data were combined, forming the foundations for future control developments of a suitable light-off strategy. © 2010 Institut français du pétrole.
Subject
Fluid Mechanics Chemistry & Energetics
PT - Power Trains
TS - Technical Sciences
Safe and Clean Mobility
Environment Emission
Mobility
Analysis techniques
Catalyst technologies
Electrically heated catalysts
Fuel penalty
Heating power
Heating technology
Hybrid vehicles
Integral approach
Integrated powertrain control
Light-off
System complexity
Temperature range
Test data
Three way catalytic converter
Catalysts
Catalytic converters
Conversion efficiency
Electric utilities
Fuels
Ground vehicles
Land vehicle propulsion
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TNO identifier
347469
ISSN
1294-4475
Source
Oil and Gas Science and Technology, 65 (1), 47-54
Document type
article