A simulation framework for cold-start evaluation of a gasoline engine equipped with an electrically heated three-way catalyst

Velmurugan, Dhinesh Vilwanathan; McKelvey, Tomas; Olsson, Jan-Ola

doi:10.1016/j.ifacol.2021.10.216

Cited by 11 publications

(3 citation statements)

References 11 publications

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“…In order to better predict the impact of electric heaters on the activity of three-way catalysts, Velmurugan D.V. et al [34] use a control-oriented model to evaluate the cold start of a gasoline vehicle exhaust system containing an electric heater. By combining and comparing electric heating technology with other technical solutions, an optimized cold start scheme for the aftertreatment device can be obtained.…”

Section: Application To Gasoline Engine Vehiclesmentioning

confidence: 99%

Applications of Electric Heating Technology in Vehicle Exhaust Pollution Control

Li,

Xiao,

Wang

et al. 2024

Processes

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Motor vehicle exhaust is an important cause of atmospheric pollution. Nowadays, mainstream exhaust emission aftertreatment technologies, such as TWC, DOC, SCR, and DPF, usually require sufficient temperature to perform good purification or maintain normal working conditions. Compared with exhaust gas heating technologies such as engine enrichment and fuel injection, electric heating technology can quickly increase the temperature of exhaust gas aftertreatment devices without adverse effects on engine operating conditions. This article introduces the research and progress of electric heating technology combined with traditional aftertreatment devices on major types of vehicles, such as gasoline vehicles, diesel vehicles, motorcycles, and hybrid vehicles, to improve exhaust purification efficiency and its accompanying fuel consumption impact. In addition, the common structure and characteristics of electric heaters, as well as the current status and development trend of electric heating unit technologies such as electric heating power supply are introduced.

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Section: Application To Gasoline Engine Vehiclesmentioning

confidence: 99%

Applications of Electric Heating Technology in Vehicle Exhaust Pollution Control

Li,

Xiao,

Wang

et al. 2024

Processes

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“…The EHC has been introduced as a measure to increase the operating temperatures of three-way catalysts (TWCs) in gasoline engines during the cold start [11][12][13]. It has also been applied to diesel oxidation catalysts (DOC) and urea-SCR systems to enhance the evaporation and decomposition performance of the urea-water solution, particularly in cold start conditions by increasing the exhaust gas temperature [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

“…In that sense, simplified one-dimensional (1D) theoretical models can be suitable for that purpose if the prediction accuracy of the models is acceptable. The 1D modeling works have been performed previously for the EHC system coupled with a three-way catalyst (TWC) in gasoline engines [11][12][13]. However, the studies mostly focused on the analysis of the catalyst temperature distribution inside the TWC, not in the EHC.…”

Section: Introductionmentioning

confidence: 99%

Simplified Modeling and Analysis of Surface Temperature Distribution in Electrically Heated Catalyst for Diesel Urea-SCR Systems

et al. 2022

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Impending emission regulations of diesel engines for construction machineries would regulate nitrogen oxide emissions strictly in cold operating conditions. The urea-based selective catalytic reduction (urea-SCR) system coupled with the electrically heated catalyst (EHC) has been considered as a potential measure to meet the strict emission regulations by promoting evaporation and thermal decomposition of urea–water solution in cold operating conditions. Analyzing the thermal conditions in the EHC is crucial for the optimized operation and control of EHC-based urea-SCR systems under various engine operating conditions. In the current study, we introduce a simple one-dimensional analysis scheme to characterize the surface temperature distribution in the EHC based on energy conservation and the theories of forced internal convection. Since the EHC has a complicated internal structure with fine flow cells inside it, a flow cell in the EHC is extracted for the one-dimensional heat transfer analysis. EHC operation parameters such as exhaust gas flow rate and supplied electric power to the EHC are scaled to be applied for the flow cell analysis. The adequacy of the analysis scheme is then validated by surface temperature measurement results at the EHC outlet. The validation results showed over 95% prediction accuracy of the 1D analysis scheme in the operating conditions of a heavy-duty diesel engine. Based on proven reliability, the effects of geometric and operation parameters on the surface temperature distribution in the EHC were analyzed and discussed using the analysis results.

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Electrically Heated Catalyst Temperature Tracking Using Extended Kalman Filter Based Supertwisting Control

Landarouche,

Bakhti

2024

Lecture Notes in Electrical Engineering

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A simulation framework for cold-start evaluation of a gasoline engine equipped with an electrically heated three-way catalyst

Cited by 11 publications

References 11 publications

Applications of Electric Heating Technology in Vehicle Exhaust Pollution Control

Applications of Electric Heating Technology in Vehicle Exhaust Pollution Control

Simplified Modeling and Analysis of Surface Temperature Distribution in Electrically Heated Catalyst for Diesel Urea-SCR Systems

Electrically Heated Catalyst Temperature Tracking Using Extended Kalman Filter Based Supertwisting Control

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