This investigation deals with the EF7 (TC) engine, a dual fuel engine equipped with a turbocharger system, consequently with a high probability of knock inception. In this study, an operating cycle of the engine was simulated using KIVA-3V code. Some modifications were carried out on the KIVA method of calculating pressure in the intake port in order to simulate turbocharger pressure correctly. Auto-ignition and knock were then simulated using the auto-ignition integral model. The modified code and the simulation were verified using three different methods; in-cylinder average pressure, gas temperature of the exhaust port, and auto-ignition timing. The simulation results using the auto-ignition integral model, as compared with the experimental data, proved to be reasonably accurate. Following this validation, the effect of the knock phenomenon on the engine heat transfer through the walls was investigated. The simulations showed that the rate of heat transfer through the walls under knocking conditions is about 2.2 times higher than that under normal conditions. However, it was also shown that the total heat transfer increases about 15%.
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December 2015
Research-Article
Numerical Investigation of the Effect of Knock on Heat Transfer in a Turbocharged Spark Ignition Engine
Arman Rostampour,
Arman Rostampour
Department of Automotive Engineering,
Iran University of Science and Technology,
Tehran 1651114833, Iran
e-mail: arostampour@auto.iust.ac.ir
Iran University of Science and Technology,
Tehran 1651114833, Iran
e-mail: arostampour@auto.iust.ac.ir
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Ali Nassiri Toosi
Ali Nassiri Toosi
Assistant Professor
Department of Automotive Engineering,
Iran University of Science and Technology,
Tehran 1684613114, Iran
e-mail: anasiri@iust.ac.ir
Department of Automotive Engineering,
Iran University of Science and Technology,
Tehran 1684613114, Iran
e-mail: anasiri@iust.ac.ir
Search for other works by this author on:
Arman Rostampour
Department of Automotive Engineering,
Iran University of Science and Technology,
Tehran 1651114833, Iran
e-mail: arostampour@auto.iust.ac.ir
Iran University of Science and Technology,
Tehran 1651114833, Iran
e-mail: arostampour@auto.iust.ac.ir
Ali Nassiri Toosi
Assistant Professor
Department of Automotive Engineering,
Iran University of Science and Technology,
Tehran 1684613114, Iran
e-mail: anasiri@iust.ac.ir
Department of Automotive Engineering,
Iran University of Science and Technology,
Tehran 1684613114, Iran
e-mail: anasiri@iust.ac.ir
1Corresponding author.
Contributed by the Combustion and Fuels Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received March 16, 2015; final manuscript received April 25, 2015; published online June 2, 2015. Editor: David Wisler.
J. Eng. Gas Turbines Power. Dec 2015, 137(12): 121502 (8 pages)
Published Online: June 2, 2015
Article history
Received:
March 16, 2015
Revision Received:
April 25, 2015
Citation
Rostampour, A., and Toosi, A. N. (June 2, 2015). "Numerical Investigation of the Effect of Knock on Heat Transfer in a Turbocharged Spark Ignition Engine." ASME. J. Eng. Gas Turbines Power. December 2015; 137(12): 121502. https://doi.org/10.1115/1.4030517
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