Influence of the Combustion Energy Release on Surface Accelerations of an HCCI Engine

Massey, Jeffery A.; Drallmeier, J. A.; Eaton, Scott J.; Wagner, R. M.

doi:10.4271/2009-01-2741

Cited by 5 publications

(2 citation statements)

References 28 publications

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“…For both SI engines in [1], the majority of the vibration energy produced during combustion was concentrated below 4 kHz. These results, along with other studies [2, 5–7, 14], clearly indicate that the combustion process is most directly related to the engine vibration in the 0.5–4 kHz bandwidth frequency band, regardless of engine structure. To the authors’ knowledge, there is no standard established methodology from which to extract the vibration frequency band most related to the combustion process.…”

Section: Relation Of the Vibration Characteristics To Combustion Phasingsupporting

confidence: 81%

Application of accelerometers for sensing combustion phasing of an advanced combustion engine

Massey

Wagner

Drallmeier

2011

International Journal of Engine Research

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This study evaluates the ability of accelerometers to detect combustion phasing of a single-cylinder air-cooled internal combustion engine undergoing homogeneous charge compression ignition. Metrics derived from the measured surface acceleration waveform, surface velocity, and the surface-specific kinetic energy were compared to the 50 per cent energy release location (CA50) on a cyclic basis for three different experimental test cases. The peak surface velocity location showed a robust ability to detect CA50 on a cyclic basis for short combustion durations. Using a simple single-degree-of-freedom vibration model, it is shown the impulsive nature of the combustion load and the natural frequency of the engine structure governs when the peak velocity location will indeed robustly detect CA50 on a on a per-engine cycle basis.

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Section: Relation Of the Vibration Characteristics To Combustion Phasingsupporting

confidence: 81%

Application of accelerometers for sensing combustion phasing of an advanced combustion engine

Massey

Wagner

Drallmeier

2011

International Journal of Engine Research

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“…The model being discussed is based on a Hatz 1D50Z CI engine operating in the HCCI mode, the experimental setup for which is presented in previous work done by Massey et al 16 The geometry and valve timings of this engine are fundamental to the aforementioned engine cycle, in that they determine both the behavior and the duration of the various processes throughout the cycle. These critical engine parameters, along with other engine operating conditions for the single-cylinder CI engine being modeled, can be seen in Table 1.…”

Section: Thermodynamics-based Modelmentioning

confidence: 99%

A thermodynamics-based homogeneous charge compression ignition engine model for adaptive nonlinear controller development

Bettis

Massey

Drallmeier

et al. 2012

Proceedings of the Institution of Mechanical Engineers, Part D:

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Low-temperature combustion modes, such as homogeneous charge compression ignition, represent a promising means to increase the efficiency and to reduce significantly the emissions of internal combustion engines. Implementation and control are difficult, however, owing to the dependence of the combustion event on the chemical kinetics rather than an external trigger. This work describes a nonlinear control-oriented model developed for a single-cylinder homogeneous charge compression ignition engine, which is physically based on a five-state thermodynamic cycle. This model is aimed at capturing the behavior of an engine which utilizes fully vaporized gasoline-type fuels, exhaust gas recirculation, and intake air heating in order to achieve homogeneous charge compression ignition operation. The onset of combustion, which is vital for control, is modeled using an Arrhenius reaction rate expression which relates the combustion timing to both the charge dilution and the temperature. Despite the fact that homogeneous charge compression ignition combustion is indeed fast, it is not perfectly instantaneous and therefore requires some finite amount of time to occur. To account for this phenomenon within the model, a Δθ term is added which shifts the point of instantaneous combustion from the start of combustion to a point of very-high-energy release based on experimental heat release data. The model is validated against experimental data from a single-cylinder compression ignition engine operating under homogeneous charge compression ignition conditions at two different fueling rates. Parameters relevant to control such as the combustion timing, peak in-cylinder pressure, and pressure rise rates from the simulation agree very well with the experiment in both operating conditions. The extension of the model to other fuels is also investigated via the octane index of several different gasoline-type fuels. Since this nonlinear model is developed from a controls perspective, both the output and the state update equations are formulated such that they are functions of only the control inputs and the state variables, therefore making them directly applicable to state-space methods for control. The result is a discrete-time nonlinear control model which provides a platform for developing and validating various nonlinear control strategies.

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An analytical approach to converting vibration signal to combustion characteristics of homogeneous charge compression ignition engines

Hunicz,

Gęca,

Ratajczyk

et al. 2023

Energy Conversion and Management

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Influence of the Combustion Energy Release on Surface Accelerations of an HCCI Engine

Cited by 5 publications

References 28 publications

Application of accelerometers for sensing combustion phasing of an advanced combustion engine

Application of accelerometers for sensing combustion phasing of an advanced combustion engine

A thermodynamics-based homogeneous charge compression ignition engine model for adaptive nonlinear controller development

An analytical approach to converting vibration signal to combustion characteristics of homogeneous charge compression ignition engines

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