Investigation into the Vibrational Responses of Cylinder Liners in an IC Engine Fueled with Biodiesel

Guoxing Li, Fengshou Gu, Tie Wang, Jianjun You, Andrew Ball

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The paper presents a study of the relationship between the combustion behavior and vibration response of internal combustion (IC) engines fueled with biodiesel based on finite element modelling along with experimental evaluation. An improved finite element (FE) model is established and validated to predict the dynamic responses of cylinder liners with respect to two main sources: combustion shock and piston side thrust. Based on the validated FE model, the response characteristics of the cylinder liner in an IC engine fueled with biodiesel and its causal relationship with excitation sources have been predicted. Due to the lower calorific value of biodiesel, a greater amount of fuel is injected into the combustion chamber to maintain power outputs, which results in a prolonged combustion duration and subsequent higher overall vibration levels, compared with that of diesel. The advanced ignition of biodiesel is the main cause to the compound effect on the coupling of piston side-thrust force, thereby resulting in a nonlinear increase in the root mean square (RMS) of local vibration response close to the combustion top dead center (TDC). These key findings provides insight understandings for not only biodiesel combustion diagnostics but also more accurate diagnostics of fossil diesel based on nonintrusive vibrations. View Full-Text
LanguageEnglish
Article number717
Number of pages24
JournalApplied Sciences (Switzerland)
Volume7
Issue number7
DOIs
Publication statusPublished - 13 Jul 2017

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internal combustion engines
Biofuels
linings
Engine cylinders
Biodiesel
Internal combustion engines
vibration
pistons
Pistons
thrust
Calorific value
fossils
combustion chambers
Combustion chambers
dynamic response
ignition
Dynamic response
Ignition
shock
evaluation

Cite this

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title = "Investigation into the Vibrational Responses of Cylinder Liners in an IC Engine Fueled with Biodiesel",
abstract = "The paper presents a study of the relationship between the combustion behavior and vibration response of internal combustion (IC) engines fueled with biodiesel based on finite element modelling along with experimental evaluation. An improved finite element (FE) model is established and validated to predict the dynamic responses of cylinder liners with respect to two main sources: combustion shock and piston side thrust. Based on the validated FE model, the response characteristics of the cylinder liner in an IC engine fueled with biodiesel and its causal relationship with excitation sources have been predicted. Due to the lower calorific value of biodiesel, a greater amount of fuel is injected into the combustion chamber to maintain power outputs, which results in a prolonged combustion duration and subsequent higher overall vibration levels, compared with that of diesel. The advanced ignition of biodiesel is the main cause to the compound effect on the coupling of piston side-thrust force, thereby resulting in a nonlinear increase in the root mean square (RMS) of local vibration response close to the combustion top dead center (TDC). These key findings provides insight understandings for not only biodiesel combustion diagnostics but also more accurate diagnostics of fossil diesel based on nonintrusive vibrations. View Full-Text",
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Investigation into the Vibrational Responses of Cylinder Liners in an IC Engine Fueled with Biodiesel. / Li, Guoxing; Gu, Fengshou; Wang, Tie; You, Jianjun; Ball, Andrew.

In: Applied Sciences (Switzerland), Vol. 7, No. 7, 717, 13.07.2017.

Research output: Contribution to journalArticle

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