Download or read book Development of In-cylinder Pressure Measurement Methodologies for a Single Cylinder Engine written by Swapnil Shireesh Patil and published by . This book was released on 2014 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt: Internal combustion (IC) engines are vital components of today's automotive industry. They use few of the most complex operating principles and processes. Over the past few decades, there has been an ever increasing demand for top notch vehicle efficiency and performance. The detailed working knowledge of internal combustion engines has thus been a point of interest for many researchers. IC engines basically convert the chemical energy of fluids into mechanical output, by means of a process called combustion. In four-stroke, spark ignition IC engines, ideal pressure-volume diagram is given by the OTTO cycle, which basically gives pressures inside the engine cylinder with respect to piston position. Thus, in order to study combustion, measurement of in-cylinder pressure is a critical task. In this project, a test setup is created, with a single cylinder SI engine being tested. A high pressure spark plug sensor is used to measure pressures inside the engine cylinder. An optical crank angle encoder is mounted on the engine crankshaft to measure accurate crank rotation angle. The objective of the project is to obtain an accurate real time pressure vs. crank angle diagram, which in turn can lead to pressure vs. volume diagram. The changes in the pressure are studied under the effect of various engine parameters. A high capacity system from National Instruments is used for data acquisition purposes. A LabVIEW program is developed from scratch to measure, acquire and write the data. Real time plots of pressure vs crank angle, pressure vs volume can be seen on the LabVIEW front panel. It is observed that the obtained results match with the theoretical representations of the ideal air standard Otto cycle.