Author : Brian Peter Murphy
Release : 2005
Genre :
Kind : eBook
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Book Synopsis Cycle Analysis of Fuel-inducted Internal Combustion Engine for Efficient Optimization of Engine Design Configurations and Performance by : Brian Peter Murphy

Download or read book Cycle Analysis of Fuel-inducted Internal Combustion Engine for Efficient Optimization of Engine Design Configurations and Performance written by Brian Peter Murphy. This book was released on 2005. Available in PDF, EPUB and Kindle. Book excerpt: A 1-Dimensional computer code was developed to predict the performance of an engine. The code is written in FORTRAN, and can be used to predict engine performance for automotive and racing applications. It can predict in-cylinder temperature, gas pressure, and heat transfer coefficients as a function of crank angle; as well as a variable specific heat calculation throughout the cycle. The turbulent flame intensity varies across the RPM span and was formulated based on a correlation study of the computer code and dynamometer data results. In-cylinder wall temperatures are determined based on influences of air-fuel ratio, compression ratio, spark timing, and coolant temperature. In the event of auto-ignition or knock occurring, the tendency for this to happen is also calculated and is shown in the output data set. To optimize engine performance of an engine for racing applications and provide an experimental database for the numerical code validation, a test program was developed. The engine selected was a 1973 Big Block Chevrolet (BBC) engine. The simulation program can calculate engine's performance in a matter of seconds, saving weeks and months of dynamometer testing as well as large sums of money. With the use of minimal computer requirements, an accurate simulation can be predicted within a very short period of time. The computer simulation proved to be effective in varying coolant temperatures and ignition timing, with small errors induced for varying air-fuel ratios.