Although high-pressure exhaust gas recirculation has been commonly used in turbocharged diesel engines for controlling the NOx formation, recent advances in after-treatment and material technology make possible using a low-pressure architecture, which recirculates the exhaust gas upstream the compressor. This brief article presents a basic study of control aspect related to the low-pressure architecture, emphasising the similarities and differences with the high-pressure system. Data from experimental tests with both configurations and from a one-dimensional wave action model simulations are combined for the analysis of the input–output paring, linearity and the transient performance of both systems.
LadommatosNAbdelhalimSZhaoH. The effects of exhaust gas recirculation on diesel combustion and emissions. Int J Engine Res1999; 1: 107–126.
2.
LapuertaMHernándezJGimenezF. Evaluation of exhaust gas recirculation as a technique for reducing diesel engine NOx emissions. Proc IMechE, Part D: J Automobile Engineering2000; 214: 85–93.
3.
BaertRBeckmanDVeenA. Efficient EGR technology for future HD diesel engine emission targets. SAE paper 1999-01-0837, 1999.
4.
SIA technical paper R-2008-05-16, 2008. A 2.0 litre diesel engine with low pressure exhaust gas recirculation and advanced cooling system. In: The diesel engine conference, proceedings of the SIA, Rouen, France, 2008.
5.
WalkerA. Controlling particulate emissions from diesel vehicles. Top Catal2004; 28: 165–170.
6.
KrügerUEdwardsSPantowE. High performance cooling and EGR systems as a contribution to meeting future emission standards. SAE paper 2008-01-1199, 2008.
7.
JankovicMJankovicMKolmanovskyI. Constructive Lyapunov control design for turbocharged diesel engines. IEEE T Contr Syst T2000; 8(2): 288–299.
8.
KolmanovskyIStefanopoulouAMoraalP. Issues in modeling and control of intake flow in variable geometry turbocharged engines. In: Proceedings of the 18th IFIP conference on system modeling and optimization, Chapman & Hall/CRC Research Notes in Mathematics Series, Detroit, MI, July 22-25 1997.
9.
RückertJSchloßARakeH. Model based boost pressure and exhaust gas recirculation rate control for a diesel engine with variable turbine geometry. In: IFAC workshop: advances in automotive control, Karlsruhe, Germany, 28-30 March 2001. Published for the International Federation of Automatic Control by Pergamon.
10.
AmmannMFeketeNGuzellaL. Model-based control of the VGT and EGR in a turbocharged common-rail diesel engine: theory and passenger car implementation. SAE paper 2003-01-0357, 2003.
11.
MertenJGloverKChristenU. Comparison of uncertainty parametrisations for h∞ robust control of turbocharged diesel engines. Control Eng Pract2005; 13(1): 15–25.
12.
RamajaniR. Control of a variable-geometry turbocharged and wastegated diesel engine. Proc IMechE, Part D: J Automobile Engineering2005; 219: 1361–1368.
13.
OrtnerPdel ReL. Predictive control of a diesel engine air path. IEEE T Contr Syst T2007; 15(3): 449–456.
14.
Van NieuwstadtMKolmanovskyIMoraalP. EGR-VGT control schemes: experimental comparison for a high-speed diesel engine. IEEE Contr Syst Mag2000; 20: 63–79.
15.
StefanopoulouAKolmanovskyIFreudenbergJ. Control of variable geometry turbocharged diesel engines for reduced emissions. IEEE T Contr Syst T2000; 8: 733–745.
16.
YoussefBLe SolliecGCordeG. Low pressure EGR control for a turbocharged diesel HCCI engine. In: 18th IEEE international conference on control applications. Part of 2009 IEEE multi-conference on systems and control, Saint Petersburg, July 8-10 2009, pp.346–351.
17.
GalindoJClimentHGuardiolaC. Modeling the vacuum circuit of a pneumatic valve system. J Dyn Syst: T ASME2009; 131(3): 1–11.
18.
GalindoJSerranoJArnauF. Description and analysis of a one-dimensional gas-dynamic model with independent time discretization. In: Proceedings of the ASME internal combustion engine division 2008 spring technical conference, Chicago, Illinois, USA, April 27–30 2008.
19.
GalindoJArnauFJTiseiraA. Solution of the turbocompressor boundary condition for one-dimensional gas-dynamic codes. Math Comput Model2010; 52(7–8): 1288–1297.
20.
SerranoJClimentHGuardiolaC. Methodology for characterisation and simulation of turbocharged diesel engines combustion during transient operation. Part 2: phenomenological combustion simulation. Appl Therm Eng2009; 29: 150–158.
21.
GalindoJClimentHGuardiolaC. Assessment of a sequentially turbocharged diesel engine on real-life driving cycles. Int J Vehicle Des2009; 49(1–3): 214–234.
22.
MaciánVGalindoJLujánJ. Detection and correction of injection failures in diesel engines on the basis of turbocharger instantaneous speed frequency analysis. Proc IMechE, Part D: J Automobile Engineering2005; 219(5): 691–701.
23.
LujánJGalindoJSerranoJ. A methodology to identify the intake charge cylinder-to-cylinder distribution in turbocharged direct injection diesel engines. Meas Sci Technol2008; 19(6): 065401.
24.
AlbererDHjalmarssonHde ReL (eds). Representation limits of mean value engine models. In: GuardiolaCGilAPlaB. (eds) Lecture notes in control and information sciences, vol. 418. 2012, pp.185–206.
25.
AmstutzAdel ReL. EGO sensor based robust output control of EGR in diesel engines. IEEE T Contr Syst T1995; 3(1): 37–48.
26.
ArrègleJLópezJGuardiolaC. Sensitivity study of a NOx estimation model for on-board applications. SAE paper 2008-01-0640, 2008.
27.
GuzzellaLAmstutzA. Control of diesel engines. IEEE Contr Syst Mag1998; 18(5): 53–71.
28.
WahlströmJErikssonLNielsenL. EGR-VGT control and tuning for pumping work minimization and emission control. IEEE T Contr Syst T2010; 18(4): 993–1003.
29.
LangthalerPDel ReL. Fast predictive oxygen charge control of a diesel engine. In: Proceedings of the American control conference, IEEE, New York City, USA, pp.4388–4393.
30.
ChiangC-JStefanopoulouAJankovicM. Nonlinear observer-based control of load transitions in homogeneous charge compression ignition engines. IEEE T Contr Syst T2007; 15: 438–448.
31.
BeatriceCAvolioGBertoliC. Critical aspects on the control in the low temperature combustion systems for high performance DI diesel engines. Oil Gas Sci Technol2007; 62: 471–482.
32.
BristolE. New measure of interaction for multivariable process control. IEEE T Automat Contr1965; 11: 133–134.
33.
GiriFChaouiFRochdiY. Parameter identification of a class of hammerstein plants. Automatica2001; 37(5): 749–756.
34.
WahlströmJErikssonL. Performance gains with EGR-flow inversion for handling non-linear dynamic effects in EGR VGT CI engines. In: Fifth IFAC symposium on advances in automotive control, Seascape Resort, USA, Aug 20-22 2007, pp.515–522.
35.
PayriFLujànJGuardiolaC. Experimental evaluation of the impact of VGT control malfunction on pollutant emissions. In: Proceedings of the ECOSM new trends in engine control, simulation and modelling, Rueil-Malmaison, France, October 2-4 2006.
