Model-based Control of Automotive Selective Catalytic Reduction Systems with Road Grade Preview

Yao Ma; Junmin Wang

doi:10.23919/ACC.2018.8431740

Model-based Control of Automotive Selective Catalytic Reduction Systems with Road Grade Preview

Yao Ma, Junmin Wang

Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

1 Scopus citations

Abstract

This paper introduces a model-based control method for automotive selective catalytic reduction (SCR) systems with preview information of road grade. SCR systems have been widely adopted in Diesel powered ground vehicles to reduce tailpipe NO_xemissions. The major control problem is to properly design the ammonia dosing strategy that can efficiently remove NO_xwithout generating excessive NH3 slip at the tailpipe. While most existing methods only utilize sensor feedback information to design controllers, the SCR controller performance can be improved by incorporating preview of road information such that the controller can act in a proactive fashion and reduce emissions over the whole trip. Road grade impact on vehicle SCR system is investigated in this paper. A corresponding controller with explicit consideration of preview road grade is developed and verified in a simulation environment. Comparison results under the US06 test cycle are presented to demonstrate the efficiency improvement of the proposed controller.

Original language	English
Title of host publication	2018 Annual American Control Conference, ACC 2018
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	7-12
Number of pages	6
ISBN (Print)	9781538654286
DOIs	https://doi.org/10.23919/ACC.2018.8431740
State	Published - Aug 9 2018
Event	2018 Annual American Control Conference, ACC 2018 - Milwauke, United States Duration: Jun 27 2018 → Jun 29 2018

Publication series

Name	Proceedings of the American Control Conference
Volume	2018-June
ISSN (Print)	0743-1619

Conference

Conference	2018 Annual American Control Conference, ACC 2018
Country	United States
City	Milwauke
Period	06/27/18 → 06/29/18

Keywords

Diesel engine
SCR
emission control
road preview

Access to Document

10.23919/ACC.2018.8431740

Link to publication in Scopus

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Cite this

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title = "Model-based Control of Automotive Selective Catalytic Reduction Systems with Road Grade Preview",

abstract = "This paper introduces a model-based control method for automotive selective catalytic reduction (SCR) systems with preview information of road grade. SCR systems have been widely adopted in Diesel powered ground vehicles to reduce tailpipe NOxemissions. The major control problem is to properly design the ammonia dosing strategy that can efficiently remove NOxwithout generating excessive NH3 slip at the tailpipe. While most existing methods only utilize sensor feedback information to design controllers, the SCR controller performance can be improved by incorporating preview of road information such that the controller can act in a proactive fashion and reduce emissions over the whole trip. Road grade impact on vehicle SCR system is investigated in this paper. A corresponding controller with explicit consideration of preview road grade is developed and verified in a simulation environment. Comparison results under the US06 test cycle are presented to demonstrate the efficiency improvement of the proposed controller.",

keywords = "Diesel engine, SCR, emission control, road preview",

author = "Yao Ma and Junmin Wang",

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Ma, Y & Wang, J 2018, Model-based Control of Automotive Selective Catalytic Reduction Systems with Road Grade Preview. in 2018 Annual American Control Conference, ACC 2018., 8431740, Proceedings of the American Control Conference, vol. 2018-June, Institute of Electrical and Electronics Engineers Inc., pp. 7-12, 2018 Annual American Control Conference, ACC 2018, Milwauke, United States, 06/27/18. https://doi.org/10.23919/ACC.2018.8431740

Model-based Control of Automotive Selective Catalytic Reduction Systems with Road Grade Preview. / Ma, Yao; Wang, Junmin.

2018 Annual American Control Conference, ACC 2018. Institute of Electrical and Electronics Engineers Inc., 2018. p. 7-12 8431740 (Proceedings of the American Control Conference; Vol. 2018-June).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AB - This paper introduces a model-based control method for automotive selective catalytic reduction (SCR) systems with preview information of road grade. SCR systems have been widely adopted in Diesel powered ground vehicles to reduce tailpipe NOxemissions. The major control problem is to properly design the ammonia dosing strategy that can efficiently remove NOxwithout generating excessive NH3 slip at the tailpipe. While most existing methods only utilize sensor feedback information to design controllers, the SCR controller performance can be improved by incorporating preview of road information such that the controller can act in a proactive fashion and reduce emissions over the whole trip. Road grade impact on vehicle SCR system is investigated in this paper. A corresponding controller with explicit consideration of preview road grade is developed and verified in a simulation environment. Comparison results under the US06 test cycle are presented to demonstrate the efficiency improvement of the proposed controller.

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