Combustion Supervision by Evaluating the Crankshaft Speed and Acceleration

Schmidt, Martin; Kimmich, Frank; Straky, Harald; Isermann, Rolf

doi:10.4271/2000-01-0558

Cited by 20 publications

(4 citation statements)

References 2 publications

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“…Some researchers have also included components for friction torque and valve torque (e.g. Schmidt, Kimmich, Straky, & Isermann, 2000;Fehrenbach, 1991). A measure of the relative torque contribution of the cylinders can be determined from the change in kinetic energy (Kiencke & Nielsen, 2005)…”

Section: Article In Pressmentioning

confidence: 99%

Active torsional vibration control of reciprocating engines

Östman

Toivonen

2008

Control Engineering Practice

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Section: Article In Pressmentioning

confidence: 99%

Active torsional vibration control of reciprocating engines

Östman

Toivonen

2008

Control Engineering Practice

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“…These two indices collectively provided a tool to detect the fault condition of each cylinder. The algorithm developed in reference [90] is based on the model proposed by Lim et al [91] and Schmidt et al [92], which estimated the indicated torque of the engine from instantaneous engine speed through an energy model. To this end, they considered the difference in kinetic and potential energy between two samples and derived the corresponding indicated torque.…”

Section: Monitoring Requirements For Automotive Engines and Relevant Workmentioning

confidence: 99%

A survey on diagnostic methods for automotive engines

Mohammadpour

Franchek

Grigoriadis

2011

International Journal of Engine Research

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Faults affecting automotive engines can potentially lead to increased emissions, increased fuel consumption, or engine damage. These negative impacts may be prevented or at least alleviated if faults can be detected and isolated in advance of a failure. United States Federal and State regulations dictate that automotive engines operate with high-precision onboard diagnosis (OBD) systems that enable the detection of faults, resulting in higher emissions that exceed standard thresholds. In this paper, we survey and discuss the different aspects of fault detection and diagnosis in automotive engine systems. The paper collects some of the efforts made in academia and industry on fault detection and isolation for a variety of component faults, actuator faults, and sensor faults using various data-driven and model-based methods.

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“…where the engine speed ω e will be assumed reasonably constant for the whole cycle (although this assumption could be unrealistic in some cases [15][16][17]). However, if incycle engine speed fluctuations were taken into account, the following developments will be complicated without improving performance.…”

Section: Time Domain Sampling Versus Crankshaft Angle Domain Samplingmentioning

confidence: 99%

Exhaust pressure pulsation observation from turbocharger instantaneous speed measurement

Macián¹,

Luján²,

Bermúdez³

et al. 2004

Meas. Sci. Technol.

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In internal combustion engines, instantaneous exhaust pressure measurements are difficult to perform in a production environment. The high temperature of the exhaust manifold and its pulsating character make its application to exhaust gas recirculation control algorithms impossible. In this paper an alternative method for estimating the exhaust pressure pulsation is presented. A numerical model is built which enables the exhaust pressure pulses to be predicted from instantaneous turbocharger speed measurements. Although the model is data based, a theoretical description of the process is also provided. This combined approach makes it possible to export the model for different engine operating points. Also, compressor contribution in the turbocharger speed pulsation is discussed extensively. The compressor contribution is initially neglected, and effects of this simplified approach are analysed.

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Combustion Supervision by Evaluating the Crankshaft Speed and Acceleration

Cited by 20 publications

References 2 publications

Active torsional vibration control of reciprocating engines

Active torsional vibration control of reciprocating engines

A survey on diagnostic methods for automotive engines

Exhaust pressure pulsation observation from turbocharger instantaneous speed measurement

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