Development of Coordinated Algorithm of EGR and Boost Pressure based on the Adaptive Sliding Mode Control

Nlwa, Shinji; Sagimori, Kenji; Nakajima, Kenji

doi:10.4271/2008-01-0996

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…The control strategy of VNT and EGR is the key to ensure the transient performance of the engine. Shin et al found that a multi-input control arithmetic improves the level of control of the boost pressure and the intake flow rate [11]. Modification of the exhaust pressure to the transient control strategy of VNT and EGR by Wijetugne et al resulted in reduced smoke emissions during acceleration and improved response of the whole system [12].…”

Section: Introductionmentioning

confidence: 99%

Study on the Optimized Matching of VNT and EGR Systems in a Diesel Engine

Xue,

Lv,

Liu

et al. 2024

J. Phys.: Conf. Ser.

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An experimental investigation of the coupling relationship between the VNT (Variable Nozzle Turbine) and EGR (Exhaust Gas Recirculation) systems was carried out in this study on a four-valve common-rail diesel engine in bench tests, as well as a transient optimization of the VNT and EGR control strategies. It was found that the overall level of NOX and flue gas emissions decreased with decreasing VNT opening. When the opening of the EGR valve was in the range of 5%-10%, the NOX and soot emissions could be reduced simultaneously by decreasing the VNT opening; the response of the intake volume was greatly improved by modifying the coordinated control strategy by boosting the control strategy under the acute load step condition; the NOX emission was significantly reduced by 6% overall, and the soot was reduced by 22.8% and the CO2 emission was improved in the transient-optimized WLTC test cycle. Therefore, by coupling the VNT and EGR systems and optimizing them transiently, emissions of pollutants during rapid engine acceleration can be decreased.

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Section: Introductionmentioning

confidence: 99%

Study on the Optimized Matching of VNT and EGR Systems in a Diesel Engine

Xue,

Lv,

Liu

et al. 2024

J. Phys.: Conf. Ser.

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Application of various control schemes on hydraulic actuated automotive cooling systems

Al-Jarrah¹,

Al-Tamimi²,

Salah³

2016

IDT

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Sliding Mode Control of Air Path in Diesel-Dual-Fuel Engine

Chatlatanagulchai¹,

Moonmangmee²,

Rhienprayoon³

et al. 2011

SAE Technical Paper Series

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In diesel-dual-fuel engine, CNG is injected at the intake ports and diesel fuel is injected at the cylinders. As a result of using CNG as main fuel, smaller amount of diesel is used mainly for ignition, resulting in lower fuel cost. However, stricter air path control is required because the engine now operates partly as a port fuel injection engine and partly as a diesel engine. As is evident from engine calibration, desired MAP and MAF have more abrupt change with wider range than those of diesel engine. In typical commercial truck, MAP and MAF are controlled separately using traditional controller such as PID with marginal control performance. Recently, more researchers have combined the control of MAP and MAF together as multivariable problem because both quantities reflect the behavior of the air path. In this paper, multivariable sliding mode control (SMC) is implemented in two-approaches, a model-reference-based and an integrator-augmented based. The diesel-dual-fuel engine was converted from a diesel engine and used in the engine test bed. Throttle and EGR valve were actuated to regulate MAP and MAF at their respective set points. Experimental results at an engine speed of 2000 rpm and 20% pedal showed that the two proposed algorithms delivered good tracking performance with fast action. The MAP and MAF responses were able to track their desired values with 2.5 seconds settling time and less than 10% overshoot. The integrator-augmented SMC had more response accuracy than the model-reference SMC but with more chattering.

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Development of Coordinated Algorithm of EGR and Boost Pressure based on the Adaptive Sliding Mode Control

Cited by 3 publications

References 6 publications

Study on the Optimized Matching of VNT and EGR Systems in a Diesel Engine

Study on the Optimized Matching of VNT and EGR Systems in a Diesel Engine

Application of various control schemes on hydraulic actuated automotive cooling systems

Sliding Mode Control of Air Path in Diesel-Dual-Fuel Engine

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