Modeling cycle-to-cycle dynamics and mode transition in HCCI engines with variable valve actuation

Shaver, Gregory M.; Roelle, Matthew J.; Gerdes, J. Christian

doi:10.1016/j.conengprac.2005.04.009

Cited by 88 publications

(69 citation statements)

References 16 publications

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“…Q is the heat transfer rate to the surrounding material, the walls and piston. This can be approximated [3] by the equatioṅ …”

Section: Temperature Tracementioning

confidence: 99%

“…where Y i,i and Y c,i are the mass fractions of species i in the inlet manifold and cylinder [3]. M i is the molar mass of species i in [kg/mol] and w comb is the rate of change of the burning fuel in [mol/m 3 s].…”

Section: Concentration Of Speciesmentioning

confidence: 99%

“…This can be derived using the first law of thermodynamics see [3]. Q is the heat transfer rate to the surrounding material, the walls and piston.…”

Section: Temperature Tracementioning

confidence: 99%

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HCCI Engine Modeling and Control using Conservation Principles

Blom

Karlsson

Ekholm

et al. 2008

SAE Technical Paper Series

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The aim of the thesis is to model engine physics and dynamics and to design controllers based on the physical model. By implementing equations and solving them it's possible to describe the major phenomena in a four stroke engine running in HCCI mode. To describe the cycle-tocycle connection in the model a wall temperature model was introduced. This wall model is used to simulate the engine dynamics and a relation between wall temperature and combustion phasing has been shown. By using variable valve timings on the inlet valves and variable inlet temperature as actuators a controller was designed based on the model. Control strategies based on the wall model helped to understand how the engine reacts on different input signals. A LQG-controller was implemented and it was able to manage both reference steps and stationary control of the combustion phasing.

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“…Q is the heat transfer rate to the surrounding material, the walls and piston. This can be approximated [3] by the equatioṅ …”

Section: Temperature Tracementioning

confidence: 99%

Section: Concentration Of Speciesmentioning

confidence: 99%

See 1 more Smart Citation

HCCI Engine Modeling and Control using Conservation Principles

Blom

Karlsson

Ekholm

et al. 2008

SAE Technical Paper Series

View full text Add to dashboard Cite

show abstract

“…As a conclusion of the review that we have presented in this article advocating the use of models for control design of automotive engines, following other approaches Re et al [2010], van Nieuwstadt and Tennison [2006], Eriksson et al [2002], Eriksson [2007], van Nieuwstadt et al [2000], Shaver et al [2006], Chauvin et al [2006c], we wish to stress some remarkable facts.…”

Section: Conclusion and Open Perspectivesmentioning

confidence: 99%

Model-based Control of Automotive Engines and After-treatment Devices

Petit¹

2013

IFAC Proceedings Volumes

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As environmental requirements on automotive vehicle emissions have steadily increased over the last decades, embedded control technology to perform real-time management of the driver's requests has appeared as a key technology and has become ubiquitous. Today, every subsystem that is found under the hood is controlled, most often in closed-loop mode. A key factor in the development of a new engine or a new vehicle is the duration of its design cycle. The design and tuning of all the intricate control loops is very time-consuming. One of the main reasons for this is that tuning procedures are often used to compensate for certain un-modeled effects such as neglected couplings of dynamic variables. In this talk, we explain how models can be used to reduce expensive calibration time significantly. As will be shown in the light of several experiments (involving airpath, fuelpath, and after-treatment systems), simple models bring effective and practical solutions involving mature tools from nonlinear control theory.

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“…The negative work necessary to suck air into the cylinder is then reduced. VVT systems also allow internal EGR, leading to reduction in emissions of nitrogen oxides ðNO x Þ (Shaver, Roelle, & Christian Gerdes, 2006) (see Fig. 1b).…”

Section: Motivationmentioning

confidence: 99%

Motion planning for experimental air path control of a variable-valve-timing spark ignition engine

Leroy

Chauvin

Petit

2009

Control Engineering Practice

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a b s t r a c tAir path control of a spark ignition engine without an EGR loop, equipped with variable-valve-timing (VVT) actuators, is addressed in this paper. VVT devices are used to produce internal exhaust gas recirculation, providing beneficial effects in terms of fuel consumption and pollutant emissions reduction. However, VVT actuators affect the fresh air charge in the cylinders. This has an impact on the torque output (leading to driveability problems) and on the fuel/air ratio (FAR) (leading to pollution peaks). To compensate for these undesirable effects, a new approach is proposed. Supportive experimental results show the relevance of this approach.

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Modeling cycle-to-cycle dynamics and mode transition in HCCI engines with variable valve actuation

Cited by 88 publications

References 16 publications

HCCI Engine Modeling and Control using Conservation Principles

HCCI Engine Modeling and Control using Conservation Principles

Model-based Control of Automotive Engines and After-treatment Devices

Motion planning for experimental air path control of a variable-valve-timing spark ignition engine

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