Research Papers: Gas Turbines: Combustion, Fuels, and Emissions

Robust Indicated Mean Effective Pressure and Combustion Lambda Feedback Control for Lean NOx Trap Regeneration in a 2.2 L Common Rail Direct Injection Diesel Engine

[+] Author and Article Information
Hyunjun Lee

Department of Automotive Engineering,
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu, Seoul 133-791, South Korea
e-mail: thomasjr@hanyang.ac.kr

Manbae Han

Department of Mechanical
and Automotive Engineering,
Keimyung University,
1095 Dalgubeol-daero,
Daegu 704-701, South Korea
e-mail: mbhan2002@kmu.ac.kr

Myoungho Sunwoo

Department of Automotive Engineering,
Hanyang University,
222 Wangsimni-ro,
Seongdong-gu, Seoul 133-791, South Korea
e-mail: msunwoo@hanyang.ac.kr

1Corresponding author.

Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received April 9, 2014; final manuscript received November 17, 2014; published online February 3, 2015. Assoc. Editor: Stani Bohac.

J. Eng. Gas Turbines Power 137(8), 081504 (Aug 01, 2015) (10 pages) Paper No: GTP-14-1193; doi: 10.1115/1.4029479 History: Received April 09, 2014; Revised November 17, 2014; Online February 03, 2015

To meet stringent Euro-6 emission regulations, a lean NOx trap (LNT) catalyst should be considered to effectively abate NOx emissions. This LNT catalyst should be periodically regenerated without deteriorating driving quality and also satisfy emission constraints, such as CO, low particulate matter or smoke, and low O2 during the regeneration phase. As a means of reductant delivery, in-cylinder post fuel injection with a feedforward (FF) control has been applied due to its simple implementation in an engine management system (EMS). However, with this method, it is difficult to satisfy the driving quality and emission constraints during the transition to or out of the regeneration phase. To solve this problem, we propose a novel LNT regeneration control method using an indicated mean effective pressure (IMEP) and a combustion lambda feedback (FB) control combined with the FF control. For the precise FB control of the post injection timing, among the location of the second rate of heat release (ROHR) peak, the magnitude of the second ROHR peak, and IMEP, the IMEP was selected as a control parameter because of its lowest cyclic variation. In addition, the exhaust lambda control was applied for the accurate FB control of the post injection quantity. The proposed method was implemented in an in-house EMS. The performance in several engine tests indicated that the torque fluctuation was minimized and all emission constraints were effectively satisfied. Furthermore, this method was also robust with regard to the thermal disturbance.

Copyright © 2015 by ASME
Your Session has timed out. Please sign back in to continue.


Oh, B., Lee, M., Park, Y., Sohn, J., Won, J., and Sunwoo, M., 2013, “VGT and EGR Control of Common-Rail Diesel Engines Using an Artificial Neural Network,” ASME J. Eng. Gas Turbines Power, 135(1), p. 012801 [CrossRef].
Han, M., Jacobs, T. J., Bohac, S. V., and Assanis, D. N., 2008, “Method and Detailed Analysis of Individual Hydrocarbon Species From Diesel Combustion Modes and Diesel Oxidation Catalyst,” ASME J. Eng. Gas Turbines Power, 130(4), p. 042803. [CrossRef]
Grondin, O., Chauvin, J., and Fontvieille, L., 2012, “Intake System Diagnosis for Diesel Engine With Dual-Loop EGR,” SAE Technical Paper No. 2012-01-0904 [CrossRef].
Johnson, T. V., 2012, “Vehicular Emissions in Review,” SAE Int. J. Engines, 5(2), pp. 216–234 [CrossRef].
Hsieh, M.-F., and Jumin, W., 2011, “NO and NO2 Concentration Modeling and Observer-Based Estimation Across a Diesel Engine Aftertreatment System,” ASME J. Dyn. Syst., Meas., Control, 133(4), p. 041005 [CrossRef].
Lee, H., Lee, J., and Sunwoo, M., 2014, “Fault Diagnosis of Exhaust Gas Recirculation and Variable Geometry Turbocharger Systems in a Passenger Car Diesel Engine Based on a Sliding Mode Observer for Air System States Estimation,” ASME J. Dyn. Syst., Meas., Control, 136(3), p. 031016 [CrossRef].
Canova, M., Midlam-Mohler, S., Pisu, P., and Soliman, A., 2010, “Model-Based Fault Detection and Isolation for a Diesel Lean NOx Trap Aftertreatment System,” Control Eng. Pract., 18(11), pp. 1307–1317. [CrossRef]
Parks, J., Huff, S., Pihl, J., Choi, J.-S., and West, B., 2005, “Nitrogen Selectivity in Lean NOx Trap Catalysis With Diesel Engine In-Cylinder Regeneration,” SAE Technical Paper No. 2005-01-3876 [CrossRef].
Larson, R. S., Pihl, J. A., Kalyana Chakravarthy, V., Toops, T. J., and Daw, C. S., 2008, “Microkinetic Modeling of Lean NOx Trap Chemistry Under Reducing Conditions,” Catal. Today, 136(1–2), pp. 104–120. [CrossRef]
Johnson, T. V., 2009, “Diesel Emission Control in Review,” SAE Int. J. Fuels Lubr., 2(1), pp. 1–12 [CrossRef].
Midlam-Mohler, S., and Guezennec, Y., 2006, “Regeneration Control for a Bypass-Regeneration Lean NOx Trap System,” American Control Conference, Minneapolis, MN, June 14–16, pp. 1203–1208 [CrossRef].
Hsieh, M. F., and Wang, J., 2009, “Nonlinear Model Predictive Control of Lean NOX Trap Regenerations,” 48th IEEE Conference on Decision and Control, 28th Chinese Control Conference (CDC/CCC 2009), Shanghai, China, Dec. 15–18, pp. 5182–5187 [CrossRef].
Hsieh, M.-F., Wang, J., and Canova, M., 2010, “Two-Level Nonlinear Model Predictive Control for Lean NOx Trap Regenerations,” ASME J. Dyn. Syst., Meas., Control, 132(4), p. 041001 [CrossRef].
Jacobs, T. J., 2005, “Simultaneous Reduction of Nitric Oxide and Particulate Matter Emissions From a Light-Duty Diesel Engine Using Combustion Development and Diesel Oxidation Catalyst,” Ph.D. thesis, University of Michigan, Ann Arbor, MI.
Northrop, W. F., Vanderpool, L. M., Madathil, P. V., Assanis, D. N., and Bohac, S. V., 2010, “Investigation of Hydrogen Emissions in Partially Premixed Diesel Combustion,” ASME J. Eng. Gas Turbines Power, 132(11), p. 112803. [CrossRef]
West, B., Huff, S., Parks, J., Lewis, S., Choi, J.-S., Partridge, W., and Storey, J., 2004, “Assessing Reductant Chemistry During In-Cylinder Regeneration of Diesel Lean NOx Traps,” SAE Technical Paper No. 2004-01-3023 [CrossRef].
Senatore, A., Cardone, M., Buono, D., and Sessa, G., 2007, “Experimental Study of Lean NOx Trap Management,” SAE Technical Paper No. 2007-01-3442 [CrossRef].
Mctaggart-Cowan, G., Wahab, E., Peckham, M., Cong, S., and Garner, C., 2012, “Experimental Study of Low Temperature Diesel Combustion Sensitivity to Engine Operating Parameters,” ASME J. Eng. Gas Turbines Power, 134(8), p. 082805. [CrossRef]
Lim, J., Oh, S., Chung, J., and Sunwoo, M., 2012, “Real-Time Combustion Phase Detection Using Central Normalized Difference Pressure in CRDI Diesel Engines,” ASME J. Eng. Gas Turbines Power, 134(8), p. 082801. [CrossRef]


Grahic Jump Location
Fig. 1

Schematic diagram of the engine experimental environment

Grahic Jump Location
Fig. 2

Measured sensor signals in the DAQ system

Grahic Jump Location
Fig. 3

Exhaust emission characteristic versus post fuel injection timing: (a) EGR rate, (b) O2 concentration in the intake manifold, (c) NOx, and (d) CO

Grahic Jump Location
Fig. 4

Smoke versus post fuel injection timing

Grahic Jump Location
Fig. 5

Normalized HR at an engine speed of 1750 rpm and 6 bar of BMEP (mean 100 cycles)

Grahic Jump Location
Fig. 6

Second ROHR peak location and magnitude at an engine speed of 1750 rpm and 6 bar of BMEP (mean 100 cycles)

Grahic Jump Location
Fig. 7

Mean value and standard deviation of the three parameters at 1750 rpm

Grahic Jump Location
Fig. 8

Structure of the proposed LNT regeneration control strategy

Grahic Jump Location
Fig. 9

Proposed post fuel injection control algorithm

Grahic Jump Location
Fig. 10

Validation results at an engine speed of 1750 rpm and 6 bar of BMEP

Grahic Jump Location
Fig. 11

Validation results with different coolant temperatures at an engine speed of 1500 rpm and 6 bar of BMEP



Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related Journal Articles
Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In