This experiment studies about gas flow, induced into the cylinder, through 2 intake valves and 2 exhaust valves of 4 stroke internal combustion engine. The gas, flowing into cylinder of the 4 stroke engine, is one of the most important factors in controlling ignition and combustion process. It controls the flame propagation rate in gasoline engine and the fuel-air mixing and burning rate of diesel engine. Therefore, a good understanding of gas flow is critical to develop engine designs with the most desirable performance and operation. This experimental equipment simulates piston and cylinder operation of internal combustion engine. Using transparent acrylic cylinder, particle was released into the air during the intake process. A slit light source was projected to many planes of cylinder, such as the plane that passes through the intake valves and the plane between two intake valves. Then, a camera took a photograph of particle on these planes. These photographs show the motion of gas in 2 dimensions. The gas flow pattern was analyzed from the photographs later.
By
Prakit Wutthiprasertsong
Somkiat Amornlerdpinyo
Akarat Kongsansatian
