Experimental Investigation of a Control Method for SI-HCCI-SI Transition in a Multi-Cylinder Gasoline Engine

Wu, Hao; Collings, Nick; Regitz, S; Etheridge, Jonathan; Kraft, Markus

doi:10.4271/2010-01-1245

Cited by 30 publications

(40 citation statements)

References 19 publications

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“…The exact penalty and duration of the mode switch period depends on the control strategy. Work on combustion mode switch control strategies can be found in [8], [9] and experimental results are shown in [10].…”

Section: Introductionmentioning

confidence: 98%

Mode switches among SI, SACI, and HCCI combustion and their influence on drive cycle fuel economy

Nüesch

Hellström

Jiang

et al. 2014

2014 American Control Conference

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A vehicle and driver model from [1] is here integrated with a finite state model describing mode switches among spark-ignited (SI) combustion and the advanced combustion modes spark assisted compression ignition (SACI) and homogeneous charge compression ignition (HCCI). The model is used to quantify the influence of mode switch fuel penalties on drive cycle fuel economy considering the federal test procedure (FTP-75) and highway fuel economy test (HWFET). The simulation under the assumed fuel penalties and dynamics shows a very small fuel loss due to harmful switches. Harmful switches are mode switches that lead to short stays in the advanced combustion, where the penalty in switching is greater than the benefit achieved after the switch. The simulations also highlight the benefits of integrating the SACI mode. Apart from extending the fuel efficiency improvements beyond the HCCI range, it is postulated that SACI combustion is easier to reach (lower fuel penalty and faster response than the HCCI-SI switch) from both SI and HCCI, creating a bridge and an economic destination in the overall speed-load space. The combined operation of SACI and HCCI leads to substantially higher improvements, especially for the FTP-75 drive cycle, than using either mode individually.

show abstract

Section: Introductionmentioning

confidence: 98%

Mode switches among SI, SACI, and HCCI combustion and their influence on drive cycle fuel economy

Nüesch

Hellström

Jiang

et al. 2014

2014 American Control Conference

View full text Add to dashboard Cite

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“…Controlled auto-ignition (CAI) is a feasible combustion mode for NO X reduction, due to the lean premixed air-fuel mixture causing low combustion temperature [1,2]. Although the working range of CAI combustion is much narrower than normal spark ignition (SI) combustion [3], which was a big challenge for CAI application in series product engine, the SI-HCCI modes switching technology have provided the possibility for industrialization of CAI combustion [4,5]. In spite of this, the control of the CAI combustion is still difficult as auto-ignition of fuel is mainly influenced by chemical kinetics.…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation study on correlation between ion current signal and NO X emissions in controlled auto-ignition engine

Liu

et al. 2015

Applied Energy

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“…In Ref. [6], an experimental investigation of SI-HCCI-SI mode transition using hydraulic two-stage profile camshafts is performed, where the valve timing, step throttle opening (opening the throttle with a step command) timing, and fuel mass are optimized. However, considerable engine torque fluctuation during the combustion mode transition is observed.…”

Section: Introductionmentioning

confidence: 99%

Model-Based Control for Mode Transition Between Spark Ignition and HCCI Combustion

Zhang

Song

Zhu

et al. 2017

Journal of Dynamic Systems, Measurement, and Control

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While the homogeneous charge compression ignition (HCCI) combustion has its advantages of high thermal efficiency with low emissions, its operational range is limited in both engine speed and load. To utilize the advantage of the HCCI combustion, an HCCI capable spark ignition (SI) engine is required. One of the key challenges of developing such an engine is to achieve smooth mode transition between SI and HCCI combustion, where the in-cylinder thermal and charge mixture properties are quite different due to the distinct combustion characteristics. In this paper, a control strategy for smooth mode transition between SI and HCCI combustion is developed and experimentally validated for an HCCI capable SI engine equipped with electrical variable valve timing (EVVT) systems, dual-lift valves, and electronic throttle control (ETC) system. During the mode transition, the intake manifold air pressure is controlled by tracking the desired throttle position updated cycle-by-cycle; and an iterative learning fuel mass controller, combined with sensitivity-based compensation, is used to manage the engine torque in terms of net mean effective pressure (NMEP) at the desired level for smooth mode transition. Note that the NMEP is directly correlated to the engine output torque. Experiment results show that the developed controller is able to achieve smooth combustion mode transition, where the NMEP fluctuation is kept below 3.8% during the mode transition.

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Experimental Investigation of a Control Method for SI-HCCI-SI Transition in a Multi-Cylinder Gasoline Engine

Cited by 30 publications

References 19 publications

Mode switches among SI, SACI, and HCCI combustion and their influence on drive cycle fuel economy

Mode switches among SI, SACI, and HCCI combustion and their influence on drive cycle fuel economy

Numerical simulation study on correlation between ion current signal and NO X emissions in controlled auto-ignition engine

Model-Based Control for Mode Transition Between Spark Ignition and HCCI Combustion

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