Pressure model based coordinated control of VGT and dual-loop EGR in a diesel engine air-path system

Kim, S.; Choi, Seibum B.; Jin, Hyungyu

doi:10.1007/s12239-016-0019-8

Cited by 14 publications

(15 citation statements)

References 6 publications

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“…The Euro 5 diesel vehicles with higher GVWs showed higher NOx emissions, but the Euro 6 vehicles showed generally low NOx emissions, regardless of GVW [30]. The reason for this observation can be attributed to the technological improvement of the engine and aftertreatment system in response to RDE regulations [16][17][18][19]. Figure 5 shows a comparison of NOx emission characteristics under various average vehicle speed conditions between Euro 5 and Euro 6 HDVs.…”

Section: Euro 5 and Euro 6 Vehicle Emissionsmentioning

confidence: 99%

NOx Emissions from Euro 5 and Euro 6 Heavy-Duty Diesel Vehicles under Real Driving Conditions

Park

Kang

et al. 2020

Energies

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Despite the strengthening of vehicle emissions standards and test methods, nitrogen oxide (NOx) emissions from on-road mobile sources are not being notably reduced. The introduction of real driving emission (RDE) regulations is expected to reduce the discrepancy between emission regulations and actual air pollution. To analyze the effects of RDE regulations on heavy-duty diesel vehicles, pollutants emitted while driving were measured using a portable emission measurement system (PEMS) for Euro 5 and Euro 6 vehicles, which were produced before and after RDE regulations, respectively. NOx emissions were compared as a function of emissions allowance standards, gross vehicle weight (GVW), average vehicle speed, and ambient temperature. NOx emissions from Euro 6 vehicles were found to be low, regardless of GVW; emissions from both vehicular categories increased with a decline in the average speed. To reflect real road driving characteristics more broadly in the RDE test method for heavy-duty vehicles, it is necessary to consider engine power, which is a criterion for classifying effective sections, in the moving average window (MAW) analysis method, as well as including cold start conditions.

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Section: Euro 5 and Euro 6 Vehicle Emissionsmentioning

confidence: 99%

NOx Emissions from Euro 5 and Euro 6 Heavy-Duty Diesel Vehicles under Real Driving Conditions

Park

Kang

et al. 2020

Energies

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“…A model for the fresh air flow rate in dual-EGR systems is designed as (11) to describe the mass flow rate of pure fresh air flow in the dual-loop EGR system using the orifice equation [10]. …”

Section: A P W P R P R Rtmentioning

confidence: 99%

“…The model consisting of (12), (13), and (16) is a well-known 3rd order control-oriented model for the diesel engine with the single-loop EGR and VGT system validated in references [2,4,5]. The 5th-order model is designed by adding two dynamics (14) and (15) representing the properties of the LP EGR loop, to the 3rd-order model [9,10]. The 5th-order model is implemented under the following assumptions:…”

Section: The Reduced Order Modelmentioning

confidence: 99%

“…u is the control input for LP EGR valve to control mass flow rate of LP EGR while maintaining desired flow rate of fresh air into the compressor inlet [10].…”

Section: Icmit 2016mentioning

confidence: 99%

“…Hence, we need to select proper control states to be controlled for the combustion variables to satisfy the set-point requirements. In this paper, intake manifold pressure, exhaust manifold pressure, and fresh air flow rate are chosen as control states considering their physical importance in the operations of the air-path and availability of sensors [9,10]. This paper investigates the design of a model-based controller for the states, which is based on the 5th-order reduced model of the air-path.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sliding Mode Control of Diesel Engine Air-path System With Dual-loop EGR and VGT Based on the Reduced-order Model

Kim

Choi

2016

MATEC Web Conf.

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Abstract. This paper presents the design of a model-based controller for the diesel engine air-path system. The controller is implemented based on a reduced order model consisting of only pressure and power dynamics with practical concerns. To deal with the model uncertainties effectively, a sliding mode controller, which is robust to model uncertainties, is proposed for the air-path system. The control performance of the proposed control scheme is verified through simulation with the valid plant model of a 6,000cc heavy duty diesel engine.

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Nonlinear observer-based control design and experimental validation for gasoline engines with EGR

Jiang

Shen

2019

Control Theory Technol.

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Pressure model based coordinated control of VGT and dual-loop EGR in a diesel engine air-path system

Cited by 14 publications

References 6 publications

NOx Emissions from Euro 5 and Euro 6 Heavy-Duty Diesel Vehicles under Real Driving Conditions

NOx Emissions from Euro 5 and Euro 6 Heavy-Duty Diesel Vehicles under Real Driving Conditions

Sliding Mode Control of Diesel Engine Air-path System With Dual-loop EGR and VGT Based on the Reduced-order Model

Nonlinear observer-based control design and experimental validation for gasoline engines with EGR

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