OPTIMUM OPERATING CONDITIONS TO GET OUT OF KNOCK IN A SPARK IGNITION ENGINE OPERATING ON GASEOUS FUELS

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ALIZADEH ATTAR A.; KARIM G.A.

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION B- ENGINEERING Year:1999 | Volume:23 | Issue:1 Page(s): 0-0

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Information Journal Paper

Title

OPTIMUM OPERATING CONDITIONS TO GET OUT OF KNOCK IN A SPARK IGNITION ENGINE OPERATING ON GASEOUS FUELS

Author(s)

ALIZADEH ATTAR A. | KARIM G.A. | Issue Writer Certificate

Keywords

SI ENGINE

OPTIMIZATION

ENGINE DESIGN

KNOCK IN ENGINE

Abstract

A method is presented to predict the onset of knock and associated performance of a spark ignition engine when primarily fuelled with gaseous fuels such as methane. It gives guidelines for choosing the best operating conditions to obtain maximum power just before the onset of knock. A two-zone predictive combustion model was developed based on an estimate of the effective duration of the combustion period and the mass burning rate for any set of operating conditions. The unburned end gas preignition chemical reaction activity is described by a detailed chemical reaction kinetic scheme. The variation with time of the value of a formulated dimensionless knock parameter K is calculated. This parameter relates the total energy released within the end gas due to autoignition reaction activity per unit of corresponding instantaneous volume relative to total energy release per cylinder volume that would take place normally due to regular flame propagation. When knocking is encountered, the value of K builds up to a sufficiently high value that exceeds an acceptable limit. Under normal operating conditions, the value remains throughout the combustion period at comparatively low levels.

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APA: Copy

ALIZADEH ATTAR, A., & KARIM, G.A.. (1999). OPTIMUM OPERATING CONDITIONS TO GET OUT OF KNOCK IN A SPARK IGNITION ENGINE OPERATING ON GASEOUS FUELS. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION B- ENGINEERING, 23(1), 0-0. SID. https://sid.ir/paper/528734/en

Vancouver: Copy

ALIZADEH ATTAR A., KARIM G.A.. OPTIMUM OPERATING CONDITIONS TO GET OUT OF KNOCK IN A SPARK IGNITION ENGINE OPERATING ON GASEOUS FUELS. IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION B- ENGINEERING[Internet]. 1999;23(1):0-0. Available from: https://sid.ir/paper/528734/en

IEEE: Copy

A. ALIZADEH ATTAR, and G.A. KARIM, “OPTIMUM OPERATING CONDITIONS TO GET OUT OF KNOCK IN A SPARK IGNITION ENGINE OPERATING ON GASEOUS FUELS,” IRANIAN JOURNAL OF SCIENCE AND TECHNOLOGY TRANSACTION B- ENGINEERING, vol. 23, no. 1, pp. 0–0, 1999, [Online]. Available: https://sid.ir/paper/528734/en

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