Nonlinear modelling and control approach for a turbocharged SI engine

Khiar, D.; Lauber, Jimmy; Guerra, Thierry Marie; Floquet, Thierry; Chamaillard, Yann; Colin, Guillaume

doi:10.1109/iecon.2006.347713

Cited by 7 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mean value engine model and its specifications are brought in Refs. [1][2][3][4][5][6][7][8][9][10]. 1-D and 3-D models have the ability to provide more exact models in comparison with the mean value engine models.…”

Section: Introductionmentioning

confidence: 99%

“…[13] optimized the transient model of an SI-engine. In their transient simulation, the model was calibrated with the engine experimental data at different engine speeds (1500, 1750, 2000 and 3000 rpm) and engine loads (3,7,14, 20 bar and full load). The 50% burn point (CA50) and the 10-90% burn duration were mapped as functions of load and residuals to get a proper correlation for the combustion, especially during the transient load step.…”

Section: Introductionmentioning

confidence: 99%

“…Burned fuel angle map as a function of engine speed and engine load[18] Fig 7. 10-90% Burned duration map as a function of the engine speed and the engine load[18] Burned fuel point in the CAD after TDC as a function of the cycle number-4500 rpm…”

mentioning

confidence: 99%

See 2 more Smart Citations

Analysis and dynamic calibration of the transient of an SI-engine equipped with turbocharger

Keshavarz

Kakaee

fajri

2018

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

Transient is considered an important operation mode of an engine since most of its working cycles happen in this mode. In this paper, GT-Power software is used to model the engine and the turbocharger; moreover, the experimental results from the IPCO Company are used for validation and calibration. The simulation is calibrated for the engine's steady state in the part-and full-load conditions. Then, since the transient simulation cannot be performed based on the steady-state settings, the engine transient simulation is calibrated. Upon the performed simulation, the calibration differences of the transient and the steady state are investigated. These differences are analyzed during four processes of combustion, injection, heat transfer in the exhaust manifold and the turbocharger performance; then the various parameters' effect on the engine transient are studied. The considered transient is the one during which the engine load increases with the throttle opening at a constant engine speed. It is concluded that the produced maps of the combustion and injection parameters, which are achieved from the quasi-steady conditions, can properly predict these parameters' behavior. However, the turbocharger performance and the heat transfer inside the exhaust manifold must be calibrated, transiently. With this procedure for model calibration, the error between the model and the experimental results were decreased significantly. For example, in the speed of 1900 rpm, the error between the model and the experimental data for transient simulation is reduced from 1.57 to 0.18%. The studied engine is 1.65 L EF7-TC which is a spark ignition engine equipped with a turbocharger.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis and dynamic calibration of the transient of an SI-engine equipped with turbocharger

Keshavarz

Kakaee

fajri

2018

J Braz. Soc. Mech. Sci. Eng.

View full text Add to dashboard Cite

show abstract

“…Thomasson et al [3] model a pneumatic wastegate and develop a controller consisting of a feedforward loop and a feedback PID loop. A multivariable throttle and wastegate controller targeting intake manifold and boost pressures is introduced by Karnik et al [4], while a nonlinear controller adopting a minimum backpressure wastegate control strategy is presented by Khiar et al [5]. Finally, internal model controllers (IMC) are employed in [6] and [7] to control wastegate position in turbocharged SI engines.…”

Section: Introductionmentioning

confidence: 99%

Minimum Backpressure Wastegate Control for a Boosted Gasoline Engine With Low Pressure External EGR

Nazari

Stefanopoulou

Martz

2016

Volume 2: Mechatronics; Mechatronics and Controls in Advanced Manufacturing; Modeling and Control of Automotive Systems and Com

View full text Add to dashboard Cite

Turbocharging and downsizing (TRBDS) a gasoline direct injection (GDI) engine can reduce fuel consumption but with increased drivability challenges compared to larger displacement engines. This tradeoff between efficiency and drivability is influenced by the throttle-wastegate control strategy. A more severe tradeoff between efficiency and drivability is shown with the introduction of Low-Pressure Exhaust Gas Recirculation (LP-EGR). This paper investigates and quantifies these trade-offs by designing and implementing in a one-dimensional (1D) engine simulation two prototypical throttle-wastegate strategies that bound the achievable engine performance with respect to efficiency and torque response. Specifically, a closed-wastegate (WGC) strategy for the fastest achievable response and a throttle-wastegate strategy that minimizes engine backp-pressure (MBWG) for the best fuel efficiency, are evaluated and compared based on closed loop response. The simulation of an aggressive tip-in (the driver’s request for torque increase) shows that the wastegate strategy can negotiate a 0.8% efficiency gain at the expense of 160 ms slower torque response both with and without LP-EGR. The LP-EGR strategy, however offers a substantial 5% efficiency improvement followed by an undesirable 1 second increase in torque time response, clarifying the opportunities and challenges associated with LP-EGR.

show abstract

“…In other words, there exists a trade-off between the model accuracy and ease with which the controller development problem can be solved. While considering this trade-off several reduced order models have been proposed and subsequently used for control (see for example [6]- [9]). …”

Section: Introductionmentioning

confidence: 99%